Data Update 7 for 2026: Debt and Taxes

   In my fifth data update, I examined hurdle rates in 2025, and in my sixth data update, I looked at the profitability and return metrics for firms. Both hurdle rates and profitability metricsmcan be affected by how much debt companies choose to have in their financing structure, and it enters explicitly into my cost of capital calculations, both through the costs of equity/debt and the mix of the two, and into my accounting return calculations, for net margin and return on equity. In this session, I start with an examination of the trade off that all businesses face when it comes to choosing between debt and equity to fund their operations, and then look the debt choices that companies made in 2025. As with every other one of my data updates this year, AI enters this conversation not only because of the huge investments that are being made into AI architecture, but also because a non-trivial portion of this investment is coming from debt, with private credit as a key contributor.

Debt versus Equity: Choices and Tradeoff

    The discussion of the tradeoffs that businesses face on whether to borrow money (debt) or use owner's funds (equity) has to start with a clear distinction between what it is that sets them apart. While that distinction may seem trivial, since accountants do break financing down into debt and equity on accounting balance sheets, accountants are not always consistent in their categorization, and I think that understanding what sets debt apart from equity can help catch these inconsistencies. There are three dimensions where debt and equity deviate:

1. Nature of claim: Debt gives its holders a contractual claim on the cash flows, insofar as the terms of interest and principal payments are laid down contractually at the time of the borrowing. Note that these contractual claims cover both fixed rate debt, where the interest payments are fixed over the lifetime of the debt, and floating rate debt, where the interest payments will change over time, but in ways that are specified by the bond/loan agreements. Equity gives its holders a residual claim, i.e,, a claim on cash flows, if any, that are left over after other claim holders have been paid.
2. Priority of claim: This follows from the first distinction, but debt holders get first claim on the cashflows, when the firm is in operation, and on liquidation proceeds, if the firm ever goes bankrupt. It is this priority of claims that should generally make debt safer than equity in almost every enterprise that employs both.
3. Legal consequences: A company that fails to pay dividends to its equity investors, no matter how deeply set their expectations of receiving these dividends, may see its stock price drop, but it cannot be held legally accountable for the failure. A company that fails to make its contractual obligations on debt can not only be sued, but can be pushed into bankruptcy, effectively ending its business life.

There are three other distinctions, which do not always hold, but are usually true:

1. Tax Treatment: In much of the world, the tax code is tilted in favor of debt, with interest payments being tax deductible and cash flows to equity (dividends or buybacks) coming out of after-tax cash flows, but there are three caveats. The first is that the tax savings from debt kick in only when a company is generating a taxable profit, though laws on tax loss carry-forwards can allow even money-losing firms to get tax benefits, albeit with a delay. The second is that there are parts of the world, such as the Middle East, where the tax code explicitly bars interest tax deductions, though companies find work arounds sometimes to get the benefits. The third is that there are a few countries that try to even the playing field by either giving a tax deduction to companies for some payments to equity investors (interest on capital as a tax deduction in Brazil) or to investors directly by allowing them credits for corporate taxes paid, when they receive dividends.
2. Role in management: In most businesses, equity investors are given supremacy when it comes to managing the company, exercising that power through either direct ownership or corporate governance mechanisms (such as boards of directors). Again, there are exceptions, as is the case where lenders are given seats on boards of directors or veto power over major operating decisions, but these exceptions are usually triggered when companies violate covenants in loan agreements. 
3. Maturity: Debt usually has a finite maturity, though as we saw with the Google hundred-year bond issuance just a few weeks ago, that maturity may be well beyond the lifetime of the buyers of the bond. Equity, in contrast, is, at least on paper, an instrument with no finite due date, and may have cash flows that last into perpetuity. 

The figure below captures the differences between debt and equity in the context of a financial balance sheet:

With these distinctions in place, and given that businesses have a choice of using either debt or equity to fund their operations, let us look at the trade off, starting with what the fictional (but often used) reasons for using one source of funding over the other: 

One of the most common (bad) reasons that I hear business owners and CFOs of even large companies give for borrowing money is that debt is cheaper than equity. On the face of it, that is of course true, but it is an illusion, at least without the tax benefits kicking in. If the debt is fairly priced, i.e., you are being charged an interest rate that reflects your default risk, borrowing money will make your equity more risky and leave your cost of capital unchanged (if you have no default risk) or raise it (if you have default risk). Intuitively, your cost of capital is designed to capture the risk in your operations, and playing games on the financing side cannot change your operational risk. Among risk-takers, a common reason for using debt is that it will increase your return on equity, and while that again is technically true, it will also raise your cost of equity and magnify the impact of both your successes and your failures. Thus, if you want to borrow money to magnify the payoff to you, as an equity investor, from a successful trade or investment, you should do so, but dispense with the illusion that this is a free lunch.  Those who avoid debt have their own share of illusions, starting with the argument that the interest payments on borrowed money will lower net income. That is true, but since you have less equity invested, you may still come out as a beneficiary. They also argue that debt will increase default risk, and lower their bond ratings, but of which are likely to happen, but the objective in business is not to maximize bond ratings, but to increase value; a BBB-rated firm that borrows money and gets tax advantages can be worth more than the same firm with a AAA rating and no debt.

    So what are the real trade offs? The first and biggest benefit of debt is its tax treatment, with the tax benefits adding to firm value. Note, and this is said with no moral or ethical judgment attached to it, that this increase in value is coming from taxpayers and not from your operations becoming more valuable. A secondary benefit may come from imposing discipline on managers in public companies, with the need to make interest payments operating as a restraint on a headlong rush into poorly performing investments. On the other side of the ledger, the biggest concern you should have when you borrow money is that it increases the risk of bankruptcy, which if it happens, truncates business life, and even it does not, concerns about it happening can alter how customers, suppliers and investors interact with a business. The other cost that you face when you borrow money is that equity investors and lenders have very different interests, with equity seeking upside and lenders worrying about downside, and the costs of that conflict of interests plays out in covenants and restrictions on operating activity. The figure below summarizes these real trade offs.

The tax benefits versus bankruptcy cost trade off on debt is a simple and very powerful explainer of how much companies should borrow, but in the real world, there are companies that sometimes override the tradeoff and choose to borrow far more or far less than you would expect them to, and they are not necessarily being irrational. Here are three reasons why companies may choose a sub-optimal financing mix:

1. Shields against bankruptcy: If the biggest restraint on borrowing more is the fear of default, anything that reduces or eliminates that fear will cause companies to borrow more money. That default protection can come from governments acting as implicit or explicit guarantors of corporate debt, as was the case with Korean companies in the 1990s, or from seeing other companies in trouble being bailed out by the government, because they were too big to fail. 
2. Control versus Value: While businesses have the option of using either equity or debt to fund operations, raising fresh equity usually requires giving up ownership of the business to venture capitalists (at a private business) or to other public market investors (for public companies). For founders and family groups that value control over almost everything else, this can result in firms borrowing money, even though the fundamentals do not support the action. This can explain why Middle Eastern firms, many of which get no tax benefit from debt, may choose to borrow money to fund operations, usually with higher costs of capital, as well as the existence of venture debt, an almost absurd notion from a corporate finance standpoint, since you are lending to start-ups and young money-losing companies with unformed business models and 
3. Subsidized debt: If a business has access to debt with below-market interest rates, given default risk, it may make sense to borrow money at these subsidized rates. These debt subsidies are often granted to companies that are seen as delivering on a social purpose (green energy in the last decade) or a political/security interests (defense and infrastructure businesses), and you should therefore not be surprised if they all carry too much debt.

On the other side of the ledger, there are three reasons why companies may borrow less than they should:

1. Restrictive covenants: In markets where debt comes primarily from bankers, it is possible that the covenants that come with this debt are so onerous that businesses will choose to leave tax benefits on the table in order to preserve operating flexibility; this may explain why technology companies, even those with large and stable cash flows, often choose not to borrow money or if they have to, go directly to bond markets.
2. Overpriced equity: Financial markets make mistakes, and sometimes those mistakes may work in your favor as a company with your stock price soaring well above what you think is justifiable, given your fundamentals. In that case, you may choose to use equity, even if you have debt capacity, using your own overpriced shares as currency in funding acquisitions.
3. Regulatory constraints: In some countries and/or sectors, there may be regulatory restrictions on borrowing that cap how much debt you can take on, even though you have the capacity to carry more in debt. Those restrictions can take the form of limits on book debt ratios or on how much interest expense is tax deductible, as a function of revenues or EBITDA.

The picture below captures these frictional considerations:

In sum, the choices between debt and equity play out differently at different companies, depending not only on the characteristics of the company (tax rate, default risk etc.) but also on the management team making that decision on whether to borrow money. If you are an optimizer, by nature, you may this discussion too diffuse, since it points you in a direction (more or less debt) and not to a specific debt mix, but that is easily remedied, if you use the cost of capital as your optimizing tool to find the mix of debt and equity that minimizes your cost of capital. 

Download optimizer spreadsheet

Rather than try your patience by belaboring that process, I can point you in the direction of how that is done in my corporate finance class sessions, and with this tool.

Debt and Equity in 2025

    With this tradeoff on debt and equity in mind, let's turn to the data, and in particular, I plan to focus on the choices that companies made globally, on the financing question, in 2025. I will start by looking at the two forces that should have the greatest relevance in this decision, the tax benefits of debt and the default risk, and then look at the mixes of financing across sectors, industries and regions.

The Tax Landscape

    Any discussion of taxes has to start with reality checks. The first is that governments need tax revenues, to fund their spending, and corporations and businesses are a target, partly because they affect taxpayers (and voters) indirectly, rather than directly (as is the case with income and sales taxes). The second is that businesses do not like to pay taxes, and try to minimize the taxes they pay, mostly through legal means, with accountants, transfer pricing specialists and tax lawyers abetting, though they sometimes step over the line into tax evasion. When measuring the tax burden that businesses face, we have to distinguish between three measures of tax rates:

1. Marginal Tax Rates: The marginal tax rate reflects the tax rate you face on the last dollar of your taxable income, and thus comes from the statutory tax code of the domicile that the business operates in. While there are a few companies that try to report these tax rates, you are more likely to uncover them by going into the tax code. Fortunately, the leading accounting firms keep updated estimates of these marginal tax rates in the public domain, as do some tax watchdogs, and I used  The Tax Foundation for this year's updates across countries, and the numbers are in the picture below: 

   

   Download corporate tax rates, by country

   While your eye may be drawn to differences in corporate tax rates, across countries, these differences have narrowed, as the countries with the largest economies (and taxable business) are converging around a marginal tax rate of 25%. There are regional differences, with Latin America and Africa home to some of the highest corporate tax rates, and Eastern Europe and Russia home to some of the lowest. Clearly, there are exceptions within each region, with Ireland the leading outlier in Europe, with a marginal tax rate of 12%, and Paraguay in Latin America, with a marginal tax rate of 10%.
2. Effective tax rates: The effective tax rate is an accounting measure, reflecting the taxes paid and taxable  income line items in the income statement, which follows accrual accounting principles. The effective and marginal tax rates can deviate for many reason, including corporate income earned in other countries, tax deferral strategies and even differences between tax and reporting books. I estimated effective tax rates for the companies in my database, and report the averages, by sub-region of the world, in the table below:

   

   Corporate Marginal and Effective Tax Rates, by Country

   In the aggregate, the effective tax rates were lower than the marginal tax rates in about 60% of the companies in my sample, and the difference is a rough proxy for the effectiveness of a tax system, with marginal tax rates running close to or behind effective tax rates in more effective tax regimes. By that measure, India has the least effective tax code among the regions, with an effective tax rate of 22.33% and a marginal tax rate of 30%, followed by the United States and Japan, though the caveat would foreign sales in lower tax locales, in each of these cases. The tax rate statistics, broken down by industry, for global companies, is at this link, if you are interested.
3. Cash tax rates: The cash tax rates also come from accounting statements, with the information in the statement of cash flows used to convert accrual taxes paid to cash taxes paid, and are reflective of what companies actually pay to governments during the course of the year. In 2025, the average cash tax rate across companies with taxable income was 25.86% (21.02%) for global (US) firms, about 1% higher than the effective tax rate in both cases.

For the debt question, it is the marginal tax rate that is most relevant, at least for computing tax benefits, since interest expenses save you taxes at the margin; interest expenses get deducted to get to taxable income, and it is the last dollars of taxable income that thus get protected from paying taxes.

The Default/Distress Landscape

    In a world where companies never default, and you still get tax benefits from borrowing, companies push towards higher and higher debt ratios. In the real world, default acts as a brake on debt, with higher default risk translating into lower debt ratios. While default risk is company-specific, the exposure for default risk, across all companies, will vary over time, largely as a function of how well the economy is doing. The ratings agencies (Moody's, S&P and Fitch) track defaults on a year-to-year basis, and in 2025, they all recorded a drop in default rates across the globe, with US companies driving much of the decline. S&P, in its review of 2025 default and distress, reported that a drop in corporate defaults from 145 in 2024 to 117 to 2025, with the US share of defaults declining from 67% to 62%.  To provide historical context, I looked at corporate default rates on loans (using data from FRED) on a quarterly basis going back to 1986:

Corporate loan default rates

While the low defaults in 2025 were a positive sign for lenders, especially given the economic turmoil created by tariffs and trade wars, there were some worrying trends as well. In May 2025, Moody's estimate of the probability of default at US companies spiked to 9.2%, its highest value since the 2008 crisis. On the bond ratings front, you had more ratings downgrades than upgrades during the year, and almost $60 billion in corporate bonds slipped below investment grade during the  year.  Breaking down all rated companies, by S&P ratings class, and by region, at the end of 2025:

Source: S&P Cap IQ

The US has the highest percentage of listed companies with bond ratings, but even in the US, only 11.43% of companies carry that rating, and that percentage is far lower in other parts of the world. Among rated companies, the US has the highest percentage of below investment-grade ratings, suggesting that in much of the rest of the world, there is a self-selection that occurs, where only companies that believe that they will get high ratings are willing to go through the ratings process. Finally, at the start of 2026, there are only AAA rated-companies left in the world, at least according to S&P, in Johnson & Johnson and Microsoft. Looking at 2025, through the lens of default, the numbers look comforting, at least on the surface, with the number of defaults decreasing, but there was disquiet below, as bond buyers wrestled with the consequences of a changing economic world order, and worries about another crisis lurking in the wings. 

Debt Burden in 2025

    With the background data on tax rates and default risk in place, I will turn to measuring the debt in publicly traded firms, in 2025, and differences in debt burdens across companies, sectors and regions. That mission requires clarity on how to measure debt burdens, and the picture below offers the choices:

Broadly speaking, debt burden metrics can capture debt comfort, i.e., the buffer that businesses have built in to meet their debt obligations and debt level, where you look at debt as a percent of overall funding. In the former group, there are two proxies that you can use to gauge the borrowing buffer  - the interest coverage ratio, measuring how much companies have as operating income, relative to their interest expenses, and the debt as a multiple of EBITDA, capturing how many years it will take a company to pay off its debt, if current EBITDA is sustained. In the latter, I will look at debt as a percent of capital invested, using both accounting measures of capital invested (book value) and market value measures.

1. Debt comfort

    When companies borrow money, the contractual claims from that debt usually take two forms. The first is interest expenses, and ongoing claim that gives you tax benefits but has to be covered out of income generated each year, and the second is repayment of principal, which comes due at maturity. The interest coverage ratio focuses entirely on the former, and interest payments are scaled to how much a company generates in operating income:

Interest coverage ratio = Earnings before interest and taxes/ Interest expenses

This ratio is simple, with high values associated with less default risk and more safety, at least from a lending perspective. It is still powerful, and it remains the financial ratio that best explains differences in bond ratings across non-financial service companies, and I use it to estimate synthetic bond ratings for firms in my corporate financial analysis.

    The problem with interest coverage ratios is that they ignore the other contractual obligation that emerges from debt, which is principal payments due, and the ratio that is most often used to measure that exposure scales total debt at a firm to its earnings before interest, taxes and depreciation:

Debt to EBITDA = Total Debt/ EBITDA

With this ratio, lower values are associated with less default risk and more safety, because a firm, at least if it wanted to, could pay off its debt in fewer years with its operating cash flows.

    In the table below, I look at interest coverage ratios and debt to EBITDA values, by sector, for US and global companies, using the same approach I employed in my last update and reporting a ratio based on aggregated values as well as the distribution of the ratio across companies:

As you can see, with both the US and global groupings, technology companies have the largest safety buffers when it comes to debt, with very high interest coverage ratios and low debt to EBITDA, whereas real estate and utilities have the least buffers, with low interest coverage ratios and high debt to EBITDA. As always, the contrast between the aggregated and median values indicate that larger companies, not surprisingly, operate with stronger buffers than smaller companies in almost every sector grouping. Finally, the debt comfort numbers are not computed for financial service companies, for the same reasons that we did not compute costs of and returns on capital for these firms - debt to a bank is raw material and not capital.

2. Debt level 

    If you go back to the financial balance sheet structure that I started this post with, the debt measure that emerges is one that scales it to the equity invested in the firm (debt to equity) and to the capital invested (debt to capital). These measures have resonance in corporate finance in valuation, because they become drivers of the costs of equity and debt and ingredients in the cost of capital.That said, you can measure this ratio using book value debt to capital (or equity), where you stay with the values of debt and equity reported on accounting balance sheets or with market value debt to capital (and equity ratios), where you use market values for debt and equity. At the risk of sounding dogmatic, book value debt ratios should never come into play in financial analysis and it is market value ratios that matter for two reasons. The first relates back to all of the criticisms I had of accounting invested capital in the context of computing account returns - it is dated and skewed by accounting contradictions and actions. The second is that it is unrelated to what you are trying to measure in a cost of capital, which is what it would cost you to acquire the firm today, where it is market price that determines how much you have to pay, not book value. That said, there remain a fairly large subset of analysts and firms who swear allegiance to book value for a variety of reasons, most of which have no basis in reality. I report book and market debt to capital ratios for all publicly traded firms, broken down by sector for global and US companies:

As you can see, companies look significantly more debt-laden with book value numbers than with market value, and in sectors like technology, where accountants fail to bring the biggest assets on to the books, the difference is even starker. The results in this table reinforce the findings in the debt comfort table, with technology companies carrying very little debt (3-5% in market cap terms) and utilities and real estate carrying the highest. I also reported, on the aggregated numbers, the gross and net debt ratios, with the latter netting cash holdings from debt.

AI Investing and Debt

    In every data update post that I have written so far this year, AI has become a component of the discussion, reflecting the outsized role it played not just in market pricing during 2025, but also in business decisions made during the year. To see the connection between AI and debt, I will start with AI investing side, where hundreds of billions were spent by companies building AI infrastructure and large language models (LLMs) during 2025, with plans to spend more in the years to come. A sizable portion of this AI capital expenditure have come from big tech companies, with Meta, Alphabet, Amazon, Oracle and Microsoft all making large bets on the future of AI, and the extent of their investment is visible in the graph below, where I look at capital expenditures and cash acquisitions at these firms (with Broadcom added to the mix) from 2015 to 2025:

The shift at these firms from capital-light to capital-intensive models over this period has been staggering, with the collective investment in 2025 alone hitting $400 billion, with guidance suggesting that they are only getting started. It is worth noting that while big tech has garnered the AI cap ex headline, there are a whole host of other companies that are investing in AI architecture, which include real estate, data centers and power, and many of these companies are still not publicly listed. Going back to investment first principles, you can debate whether these companies can expect to generate positive net present value from their AI investments, and I have argued in earlier posts that it is very likely that they are collectively over investing, with over confidence and a fear of being left behind driving their both corporate investments and investor pricing, in keeping what you would expect when there is a big market delusion.

This big market delusion is a feature, not a bug, and we have seen it play out with dot com stocks in the 1990s, online advertising companies about ten years and even with cannabis stocks in the early years of their listing. The belief that the AI market will be huge, and have two or three big winners, is driving an investing frenzy not just at the big tech companies, but also in smaller start-ups and young firms, but the the market is not big enough to accommodate the expectations across all of these firms, and that will inevitably lead to a correction and clean up. 

    The AI investing boom enters the financing storyline, which is the focus for this post, because it needs immense amounts of capital. For many of the big tech companies, much of that capital has come from their existing businesses which are cash machines, although the AI cap ex will deplete the free cash flows available to return to shareholders. That said, though, the ramping up of capital investment has been so dramatic that even the cash-rich bit tech companies have turned to debt, as you can see in the graph below:

In 2025, the big tech companies collectively borrowed $160 billion, but given their cashflows and market capitalization, that debt does not put them at risk. For many of the smaller and lower-profile companies investing in this space, where internal cashflows are insufficient, there is a need for external capital, with some coming from equity and a significant portion coming from debt. It is in the context of the debt that I have to pick up on another storyline, which is the rise of private credit as an alternative to banks and the corporate bond market.  

As you look at the explosive growth of private credit in this graph, it is worth emphasizing that private credit has been available as an option for borrowers for as long as borrowing has been around, but its usage explode in the last two decades. As AI has increasingly taken a starring role in markets, evidence is accumulating that more private debt is being directed to financing the AI investment boom,. With more than $200 billion in private debt going to AI firms in 2025, AI-related debt is rising as a percent of private credit portfolios.  

    As private credit has grown as an option, core questions remain of what it brings to a market as  differentiating features that allow it to supplant more traditional lending alternatives, i.e. banking and the corporate bond market. Here are some of the reasons offered by private credit advocates for why it may be a preferred choice for entities, in general, and for those investing in AI architecture, in particular: 

1. Better default risk assessments: One of the arguments that private credit lenders make is that they have the technical know-how to use data, that banks and bond markets have been more averse to using or have been constrained from using, to get better assessments of default risk. Those assessments, assuming that they are right, allows private credit to lend to entities at rates that are lower than they would be charged, with conventional risk assessments. In principle, that is a solid rationale, but I am unclear about what data it is that traditional lenders are not utilizing that private credit can use, but it is possible that technology and access to the internals of borrowing entities may provide an edge. In fact, the only way to gauge whether this argument of better credit assessment holds up is with a credit shock, where defaults spike across the board.
2. Cashflows-based versus Asset-based lending: A second argument is that traditional lenders, and especially banks, are focused too much on the value of the assets that they are lending against and too little on the cash flows. It is true that bank lending in particular is too focused on asset value, but that focus would provide an opening for private credit in AI, only if AI data centers and architecture investments are poised to start delivering large and positive cash flows soon, and banks are holding back on lending them money. I am hard pressed to think of too many AI investments that have these near-term payoffs.
3. Speedier and more Flexible/Customized Responses: IThis may be the biggest selling point for private credit in the AI investment world, where the investing entities are not just spending billions on AI architecture, but are in a hurry to do so. The regulatory and institutional constraints built into bank lending will stretch the process out in time, and issuing bonds, even if it were an option, comes with its own delay components. In addition, the debt for AI investments may need far more customization than what banks and bond markets can offer, or are allowed to offer, giving private credit an advantage. The problem with speed and customization being the biggest sales pitches for private credit is that it can go with taking short cuts on due diligence and adding terms to loans that cut against prudence, and those can be fatal to lending businesses.

Clearly, these reasons for the presence of private debt have merit, but only to a subset of borrowers, mostly smaller and private, and without a long borrowing history, and for a subset of projects. None that these reasons resonate for the larger tech companies, which have options to borrow money quickly and at fair market rates both from banks and the bond market, and Google's recent hundred year bond issue is an indication of how much slack bond markets are willing to concede to these firms. When a private credit fund lends Meta for an AI investment, as Blue Owl did in this transaction, the skeptic in me sees either a below-market-rate loan or one with terms that no prudent lender would accept in a loan, and neither is a sustainable lending strategy in the long term. 

    The coming together of the two storylines on AI and private credit comes with a risk that may extend well beyond the players in these spaces. If you agree with my contention that companies are collectively over investing in AI, driven by the big market delusion, there will be a time when that delusion  dissipates and markets will have to correct. In an all or mostly-equity driven space, the pain will be borne by shareholders or owners of these companies, but while painful to them, its ripple effects will be limited. When debt enters the picture, as it has in the AI investment space, the effects of a correction will no longer be isolated to equity investors in these companies, and as private credit gets repriced (from the marking of debt down to reflect higher default risk), the pain to the rest of the economy increases. In effect, we will have a banking crisis created primarily by non-banking lenders behaving badly. We saw some of this start to happen in the last year, as the glow came off the AI rose, and S&P noted the stresses that it put on private credit players. Private credit has had a good run, in terms of delivering returns to investors in it, but it has, in my opinion, the relentless selling of it as an alternative investment class has made it much too big. A shakeout is overdue, which will separate the sloppy lenders from the good ones, and perhaps shrink private credit to healthier levels.

YouTube Video

Data links

1. Marginal and Effective tax rates, by country (January 2026)
2. Debt comfort ratios, by industry (US and Global)
3. Debt load ratios, by industry (US and Global)

Spreadsheet

1. Capital structure optimizer 

Paper on Big Market Delusion

1. The Big Market Delusion (with Brad Cornell)

Data Update Posts for 2026

1. Data Update 1 for 2026: The Push and Pull of Data
2. Data Update 2 for 2026: Equities get tested and pass again!
3. Data Update 3 for 2026: The Trust Deficit - Bonds, Currencies, Gold and Bitcoin!
4. Data Update 4 for 2026: The Global Perspective
5. Data Update 5 for 2026: Risk and Hurdle Rates
6. Data Update 6 for 2026: In Search of Profitability
7. Data Update 7 for 2026: Debt and Taxes
8. Data Update 8 for 2026: Dividends and Buybacks

Data Update 8 for 2025: Debt, Taxes and Default - An Unholy Trifecta!

    There is a reason that every religion inveighs against borrowing money, driven by a history of people and businesses, borrowing too much and then paying the price, but a special vitriol is reserved for the lenders, not the borrowers, for encouraging this behavior. At the same time, in much of the word, governments have encouraged the use of debt, by providing tax benefits to businesses (and individuals) who borrow money. In this post, I look at the use of debt by businesses, around the globe, chronicling both the magnitude of borrowing, and the details of debt (in terms of maturity, fixed vs floating, straight vs convertible). The tension between borrowing too little, and leaving tax benefits on the table, and borrowing too much, and exposing yourself to default risk, is felt at every business, but the choice of how much to borrow is often driven by a range of other considerations, some of which are illusory, and some reflecting the frictions of the market in which a business operates.

The Debt Trade off

    As a prelude to examining the debt and equity tradeoff, it is best to first nail down what distinguishes the two sources of capital. There are many who trust accountants to do this for them, using whatever is listed as debt on the balance sheet as debt, but that can be a mistake, since accounting has been guilty of mis-categorizing and missing key parts of debt. To me, the key distinction between debt and equity lies in the nature of the claims that its holders have on cash flows from the business. Debt entitles its holders to contractual claims on cash flows, with interest and principal payments being the most common forms, whereas equity gives its holders a claim on whatever is left over (residual claims). The latter (equity investors) take the lead in how the business is run, by getting a say in choosing who manages the business and how it is run, while lenders act, for the most part, as a restraining influence.

Using this distinction, all interest-bearing debt, short term and long term, clears meets the criteria for debt, but for almost a century, leases, which also clearly meet the criteria (contractually set, limited role in management) of debt, were left off the books by accountants. It was only in 2019 that the accounting rule-writers (IFRS and GAAP) finally did the right thing, albeit with a myriad of rules and exceptions. 

    Every business, small or large, private or public and anywhere in the world, faces a question of whether to borrow money, and if so, how much, and in many businesses, that choice is driven by illusory benefits and costs. Under the illusory benefits of debt, I would include the following:

1. Borrowing increases the return on equity, and is thus good: Having spent much of the last few decades in New York, I have had my share of interactions with real estate developers and private equity investors, who are active and heavy users of debt in funding their deals. One reason that I have heard from some of them is that using debt allows them to earn higher returns on equity, and that it is therefore a better funding source than equity. The first part of the statement, i.e., that borrowing money increases the expected return on equity in an investment, is true, for the most part, since you have to contribute less equity to get the deal done, and the net income you generate, even after interest payments, will be a higher percentage of the equity invested. It is the second part of the statement that I would take issue with, since the higher return on equity, that comes with more debt, will be accompanied by a higher cost of equity, because of the use of that debt. In short, I would be very skeptical of any analysis that claims to turn a neutral or bad project, funded entirely with equity, into a good one, with the use of debt, especially when tax benefits are kept out of the analysis.
2. The cost of debt is lower than the cost of equity: If you review my sixth data update on hurdle rates, and go through my cost of capital calculation, there is one inescapable conclusion. At every level of debt, the cost of equity is generally much higher than the cost of debt for a simple reason. As the last claimants in line, equity investors have to demand a higher expected return than lenders to break even. That leads some to conclude, wrongly, that debt is cheaper than equity and more debt will lower the cost of capital. (I will explain why later in the post.)

Under the illusory costs of debt, here are some that come to mind:

1. Debt will reduce profits (net income): On an absolute basis, a business will become less profitable, if profits are defined as net income, if it borrows more money. That additional debt will give rise to interest expenses and lower net income. The problem with using this rationale for not borrowing money is that it misses the other side of debt usage, where using more debt reduces the equity that you will have to invest.
2. Debt will lower bond ratings: For companies that have bond ratings, many decisions that relate to use of debt will take into account what that added debt will do to the company’s rating. When companies borrow more money, it may seem obvious that default risk has increased and that ratings should drop, because that debt comes with contractual commitments. However, remember that the added debt is going into investments (projects, joint ventures, acquisitions), and these investments will generate earnings and cash flows. When the debt is within reasonable bounds (scaling up with the company), a company can borrow money, and not lower its ratings. Even if bond ratings drop, a business may be worth more, at that lower rating, if the tax benefits from the debt offset the higher default risk.
3. Equity is cheaper than debt: There are businesspeople (including some CFOs) who argue that debt is cheaper than equity, basing that conclusion on a comparison of the explicit costs associated with each – interest payments on debt and dividends on equity. By that measure, equity is free at companies that pay no dividends, an absurd conclusion, since investors in equity anticipate and build in an expectation of price appreciation. Equity has a cost, with the expected price appreciation being implicit, but it is more expensive than debt.

The picture below captures these illusory benefits and costs:

If the above listed are illusory reasons for borrowing or not borrowing, what are the real reasons for companies borrowing money or not borrowing? The two primary benefits of borrowing are listed below:

• Tax Benefits of Debt: The interest expenses that you have on debt are tax deductible in much of the world, and that allows companies that borrow money to effectively lower their cost of borrowing: 

    After-tax cost of debt = Interest rate on debt (1 – tax rate) 

In dollar terms, the effect is similar; a firm with a 25% tax rate and $100 million in interest expenses will get a tax benefit of $25 million, from that payment.  

• Debt as a disciplinary mechanism: In some businesses, especially mature ones with lots of earnings and cash flows, managers can become sloppy in capital allocation and investment decisions, since their mistakes can be covered up by the substantial earnings. Forcing these companies to borrow money, can make managers more disciplined in project choices, since poor projects can trigger default (and pain for managers).

These have to be weighted off against two key costs:

1. Expected bankruptcy costs: As companies borrow money, the probability that they will be unable to make their contractual payments on debt will always increase, albeit at very different rtes across companies, and across time, and the expected bankruptcy cost is the product of this probability of default and the cost of bankruptcy, including both direct costs (legal and deadweight) and indirect costs (arising from the perception that the business is in trouble).
2. Agency costs: Equity investors and lenders both provide capital to the business, but the nature of their claims (contractual and fixed for debt versus residual for equity) creates very different incentives for the two groups. In short, what equity investors do in their best interests (taking risky projects, borrow more money or pay dividends) may make lenders worse off. As a consequence, when lending money, lenders write in covenants and restrictions on the borrowing businesses, and those constraints will cause costs (ranging from legal and monitoring costs to investments left untaken).

The real trade off on debt is summarized in the picture below:

While the choices that businesses make on debt and equity should be structured around expected tax benefits (debt’s biggest plus) and expected bankruptcy costs (debt’s biggest minus), businesses around the world are affected by frictions, some imposed by the markets that they operate in, and some self-imposed. The biggest frictional reasons for borrowing are listed below:

1. Bankruptcy protections (from courts and governments): If governments or courts step in to protect borrowers, the former with bailouts, and the latter with judgments that consistently favor borrowers, they are nullifying the effect of expected bankruptcy costs in restraining companies from borrowing too much. Consequently, companies in these environments will borrow much more than they should.
2. Subsidized Debt: If lenders or governments lend money to firms at below-market reasons for reasons of virtue (green bonds and lending) or for political/economic reasons (governments lending to companies that choose to keep their manufacturing within the domestic economy), it is likely that companies will borrow much more than they would have without these debt subsidies.
3. Corporate control: There are companies that choose to borrow money, even though debt may not be the right choice for them, because the inside investors in these companies (family groups, founders) do not want to raise fresh equity from the market, concerned that the new shares issued will reduce their power to control the firm. 

The biggest frictional reasons for holding back on borrowing include:

1. Debt covenants: To the extent that debt comes with restrictions, a market where lender restrictions are more onerous in terms of the limits that they put on what borrowers can or cannot do will lead to a subset of companies that value flexibility borrowing less.
2. Overpriced equity: To the extent that markets may become over exuberant about a company's prospects, and price its equity too highly, they also create incentives for these firms to overuse equity (and underutilize debt). 
3. Regulatory constraints: There are some businesses where governments and regulators may restrict how much companies operating in them can borrow, with some of these restrictions reflecting concerns about systemic costs from over leverage and others coming from non-economic sources (religious, political).

The debt equity trade off, in frictional terms, is in the picture below:

As you look through these trade offs, real or frictional, you are probably wondering how you would put them into practice, with a real company, when you are asked to estimate how much it should be borrow, with more specificity. That is where the cost of capital, the Swiss Army Knife of finance that I wrote about in my sixth data update update, comes into play as a debt optimizing tool. Since the cost of capital is the discount rate that you use to discount cash flows back to get to a value, a lower cost of capital, other things remaining equal, should yield a higher value, and minimizing the cost of capital should maximize firm. With this in place, the “optimal” debt mix of a business is the one that leads to the lowest cost of capital:

You will notice that as you borrow more money, replacing more expensive equity with cheaper debt, you are also increasing the costs of debt and equity, leading to a trade off that can sometimes lower the cost of capital and sometimes increase it. This process of optimizing the debt ratio to minimize the cost of capital is straight forward, and if you are interested, this spreadsheet will help you do this for any company.

Measuring the Debt Burden

    With that tradeoff in place, we are ready to examine how it played out in 2024, by looking at how much companies around the world borrowed to fund their operations. We can start with dollar value debt, with two broad measures – gross debt, representing all interest-bearing debt and lease debt, and net debt, which nets cash and marketable securities from gross debt. In 2024, here are the gross and net debt values for global companies, broken down by sector and sub-region:

The problem with dollar debt is that absolute values can be difficult to compare across sectors and markets with very different values, I will look at scaled versions of debt, first to total capital (debt plus equity) and then then to rough measures of cash flows (EBITDA) and earnings (EBIT). The picture below lists the scaled versions of debt:

1. Debt to Capital: The first measure of debt is as a proportion of total capital (debt plus equity), and it is this version that you use to compute the cost of capital. The ratio, though, can be very different when you use book values for debt and equity then when market values are used. The table below computes debt to capital ratios, in book and market terms, by sector and sub-region: 
   
   I would begin by separating the financial sector from the rest of the market, since debt to banks is raw material, not a source of capital. Breaking down the remaining sectors, real estate and utilities are the heaviest users of debt, and technology and health care the lightest. Across regions, and looking just at non-financial firms, the US has the highest debt ratio, in book value terms, but among the lowest in market value terms. Note that the divergence between book and market debt ratios in the last two columns varies widely across sectors and regions.
2. Debt to EBITDA: Since debt payments are contractually set, looking at how much debt is due relative to measure of operating cash flow making sense, and that ratio of debt to EBITDA provides a measure of that capacity, with higher (lower) numbers indicating more (less) financial strain from debt.
3. Interest coverage ratio: Interest expenses on debt are a portion of the contractual debt payments, but they represent the portion that is due on a periodic basis, and to measure that capacity, I look at how much a business generates as earnings before interest and taxes (operating income), relative to interest expenses. In the table below, I look at debt to EBITDA and interest coverage ratios, by region and sector: 
   
   The results in this table largely reaffirm our findings with the debt to capital ratio. Reda estate and utilities continue to look highly levered, and technology carries the least debt burden. Across regions, the debt burden in the US, stated as a multiple of EBITDA or looking at interest coverage ratios, puts it at or below the global averages, whereas China has the highest debt burden, relative to EBITDA.

The Drivers and Consequences of Debt

    As you look at differences in the use of debt across regions and sectors, it is worth examining how much of these differences can be explained by the core fundamentals that drive the debt choice – the tax benefits of debt and the bankruptcy cost. 

• The tax benefit of debt is the easier half of this equation, since it is directly affected by the marginal tax rate, with a higher marginal tax rate creating a greater tax benefit for debt, and a greater incentive to borrow more. Drawing on a database maintained by PWC that lists marginal tax rates by country, I create a heat map:

Download corporate tax rates, by country

The country with the biggest changes in corporate tax policy in the world, for much of the last decade, has been the United States, where the federal corporate tax rate, which at 35%, was one of the highest in the world prior to 2017, saw a drop to 21% in 2017, as part of the first Trump tax reform. With state and local taxes added on, the US, at the start of 2025, had a marginal corporate tax rate of 25%, almost perfectly in line with a global norm. The 2017 tax code, though, will sunset at the end of 2025, and corporate tax rates will revert to their old levels, but the Trump presidential win has not only increased the odds that the 2017 tax law changes will be extended for another decade, but opened up the possibility that corporate tax rates may decline further, at least for a subset of companies.

        An interesting question, largely unanswered or answered incompletely, is whether the US tax code change in 2017 changed how much US companies borrowed, since the lowering of tax rates should have lowered the tax benefits of borrowing. In the table below, I look at dollar debt due at US companies every year from 2015 to 2024, and the debt to EBITDA multiples each year:

As you can see, the tax reform act has had only a marginal effect on US corporate leverage, albeit in the right direction. While the dollar debt at US companies has continued to rise, even after marginal tax rates in the US declines, the scaled version of debt (debt to capital ratio and debt to EBITDA have both decreased).

• The most commonly used measure of default risk is corporate bond ratings, since ratings agencies respond (belatedly) to concerns about default risk by downgrading companies. The graph below, drawing on data from S&P< looks at the distribution of bond ratings, from S&P, of rated companies, across the globe, and in the table below, we look at the breakdown by sector: 
  

The ratings are intended to measure the likelihood of default, and it is instructive to look at actual default rates over time. In the graph below, we look at default rates in 2024, in a historical context:

S&P

As you can see in the graph, default rates are low in most periods, but, not surprisingly, spike during recessions and crises. With only 145 corporate defaults, 2024 was a relatively quiet year, since that number was slightly lower than the 153 defaults in 2023, and the default rate dropped slightly (from 3.6% to3.5%) during the year. 

The default spread is a price of risk in the bond market, and if you recall, I estimated the price of risk in equity markets, with an implied equity risk premium, in my second data update. To the extent that the price of risk in both the equity and debt markets are driven by the endless tussle between greed and fear, you would expect them to move together much of the time, and as you can see in the graph below, I look at the implied equity risk premium and the default spread on a Baa rated bond:

Damodaran.com

In 2024, the default spread for a Baa rated dropped from 1.61% to 1.42%, paralleling a similar drop in the implied equity risk premium from 4.60% to 4.33%. 

Debt Design

    There was a time when businesses did not have much choice, when it came to borrowing, and had to take whatever limited choices that banks offered. In the United States, corporate bond markets opened up choices for US companies, and in the last three decades, the rest of the world has started to get access to domestic bond markets. Since corporate bonds lend themselves better than bank loans to customization, it should come as no surprise now that many companies in the world have literally dozens of choices, in terms of maturity, coupon (fixed or floating), equity kickers (conversion options) and variants on what index the coupon payment is tied to. While these choices can be overwhelming for some companies, who then trust bankers to tell them what to do, the truth is that the first principles of debt design are simple. The best debt for a business is one that matches the assets it is being used to fund, with long term assets funded with long term debt, euro assets financed with euro debt, and with coupon payments tied to variables that also affect cash flows. 

There is data on debt design, though not all companies are as forthcoming about how their debt is structured. In the table below, I look at broad breakdowns – conventional and lease debt, long term and short debt, by sector and sub-region again:

The US leads the world in the use of lease debt and in corporate bonds, with higher percentages of total debt coming from those sources. However, floating rate debt is more widely used in emerging markets, where lenders, having been burned by high and volatile inflation, are more likely to tie lending rates to current conditions.

    While making assessments of debt mismatch requires more company-level analysis, I would not be surprised if inertia (sticking with the same type of debt that you have always uses) and outsourcing (where companies let bankers pick) has left many companies with debt that does not match their assets. These companies then have to go to derivatives markets and hedge that mismatch with futures and options, creating more costs for themselves, but fees and benefits again for those who sell these hedging products.

Bottom Line

    When interest rates in the United States and Europe rose strongly in 2022, from decade-long lows, there were two big questions about debt that loomed. The first was whether companies would pull back from borrowing, with the higher rates, leading to a drop in aggregate debt. The other was whether there would be a surge in default rates, as companies struggled to generate enough income to cover their higher interest expenses. While it is still early, the data in 2023 and 2024 provide tentative answers to these questions, with the findings that there has not been a noticeable decrease in debt levels, at least in the aggregate, and that while the number of defaults has increased, default rates remain below the highs that you see during recessions and crises. The key test for companies will remain the economy, and the question of whether firms have over borrowed will be a  global economic slowdown or recession.

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Data Updates for 2025

1. Data Update 1 for 2025: The Draw (and Danger) of Data!
2. Data Update 2 for 2025: The Party continued for US Equities
3. Data Update 3 for 2025: The times they are a'changin'!
4. Data Update 4 for 2025: Interest Rates, Inflation and Central Banks!
5. Data Update 5 for 2025: It's a small world, after all!
6. Data Update 6 for 2025: From Macro to Micro - The Hurdle Rate Question!
7. Data Update 7 for 2025: The End Game in Business!
8. Data Update 8 for 2025: Debt, Taxes and Default - An Unholy Trifecta!
9. Data Update 9 for 2025: Dividend Policy - Inertia and Me-tooism Rule!

Data Links

1. Debt fundamentals, by industry (US, Global, Emerging Markets, Europe, Japan, India & China)
2. Debt details, by industry (US, Global, Emerging Markets, Europe, Japan, India & China)