Who Pays for the Buyback? Cash vs. Debt-Funded Repurchases

Every buyback headline comes with a big number. Almost none tells you where the money came from. Yet that single detail can separate a healthy company rewarding shareholders from one stretching its balance sheet to prop up earnings per share.

With S&P 500 companies repurchasing roughly $1.10 trillion of stock in the twelve months to June 2026, according to a Neuberger Berman analysis of Bloomberg data, the question matters more than ever. Here is a practical way to ask it: who really pays for the buyback, and what does that mean for you as a shareholder?

The Record Is Real, but the Funding Story Is Not Uniform

Neuberger Berman’s September 2026 analysis describes an all-time high in trailing twelve-month buybacks, with technology at a record $301 billion and financials at a record $287 billion. Those two groups are buying back stock for very different reasons and with very different money.

The same analysis notes that buybacks by large technology companies funded from free cash flow were “close to unconditional,” while buybacks tied to bank capital-return plans are not. In other words, a buyback funded by surplus cash from a business that keeps generating it is steadier than one that depends on regulators, credit conditions, or market sentiment.

Those figures are gross buybacks. They do not subtract new shares issued to employees, a distinction we covered in our piece on gross versus net buybacks. This article focuses on a different question: the source of the cash.

The Three Main Ways Companies Fund Repurchases

Broadly, a company has three sources for the cash it spends on its own shares:

Free cash flow. Operating cash left over after capital spending. This is the cleanest source because it does not add obligations.
Existing cash and investments. Money accumulated over prior years. Useful, but finite.
New borrowing. Issuing bonds or drawing on credit lines to retire shares. This swaps equity for debt and raises fixed obligations.

Most large programs blend these. The mix is what you want to understand, because it changes how much risk sits behind the repurchase.

Why Debt-Funded Buybacks Draw Criticism

Borrowing to buy back stock became a flashpoint in the late 2010s. A Fortune report from August 2019 cited Yardeni Research estimates that borrowing funded 56% of the record buybacks in 2018, and cited Goldman Sachs observing that companies had returned more cash to investors than they generated in free cash flow, a first since the Great Recession.

The appeal is easy to see. When interest rates are low and interest is tax deductible, debt can look cheaper than equity. Buying back shares then lifts earnings per share, which can also lift executive pay that is tied to that metric. The Fortune article noted that the 2017 tax reform capped the interest deduction at 30% of EBITDA, down from 100%, which trimmed part of that advantage.

These figures are from 2018 and 2019, not today. They show how the pattern looked at one point in the cycle, not how it looks now. Still, the logic holds in any era: debt creates fixed payments that do not shrink when business slows.

Cash-Funded Is Better, but Not Automatically Good

It is tempting to conclude that cash-funded buybacks are always fine. They are usually safer, yet they carry their own questions:

Price paid. Buying shares at a stretched valuation destroys value even if no debt is used.
Opportunity cost. Cash spent on shares cannot fund research, equipment, or acquisitions that might earn more.
Offsetting dilution. Some repurchases simply cancel out stock handed to employees, leaving the share count flat.

The Fortune article makes a similar point: buybacks are not inherently wrong, but they become a problem when paired with accounting gimmicks and heavy debt.

What the Tax Rules Add to the Picture

Since 2023, a 1% excise tax applies to net stock repurchases by publicly traded U.S. corporations. According to the Congressional Research Service, the taxable amount is reduced by the value of new stock the firm issues, firms with repurchases of $1 million or less are exempt, and the tax is not deductible for income tax purposes. The Joint Committee on Taxation estimated at the time that it would raise $74 billion over fiscal years 2022 through 2031.

For funding purposes, the tax is a small add-on cost, not a decisive one. It is paid by the company, not by you directly. We have covered the tax in more depth in earlier articles on this site.

A Hypothetical Example: Two Companies, Same Buyback

Here is a made-up illustration to show why the source matters. These numbers are invented for teaching purposes only.

Company A and Company B each announce a $5 billion buyback.

Company A generates $8 billion in free cash flow a year and has little debt. It funds the buyback entirely from that cash.
Company B generates $2 billion in free cash flow and already carries heavy debt. It borrows $3 billion to complete the purchase.

In a normal year, both announcements look identical and both may lift earnings per share by a similar amount. Now imagine a recession cuts each company’s cash flow in half. Company A still covers its buyback pace and its debt payments with room to spare. Company B now owes interest on the new borrowing from a smaller stream of cash. It may have to suspend repurchases, cut spending, or raise money at a worse moment.

Same headline, very different resilience. That gap is invisible unless you look past the announcement.

A Five-Minute Checklist to Find the Funding Source

You can answer the funding question using a company’s public filings, usually in the cash flow statement and balance sheet:

Compare buybacks to free cash flow. Subtract capital expenditures from operating cash flow, then see how much of that went to repurchases and dividends combined.
Check the debt trend. Did total debt rise over the same period the company was buying shares?
Look at coverage. How comfortably do earnings cover interest expense?
Read the share count. Did shares outstanding actually fall, or did stock compensation absorb the repurchases?
Note the credit rating. A rating downgrade alongside heavy buybacks is a warning sign.

None of these steps requires special software. A free filing from the SEC and a calculator are enough to get a reasonable read.

Why Sector Context Matters in 2026

Not every buyback should be judged the same way. Banks, for example, return capital under regulatory frameworks that set how much they can distribute, which is a different logic from a software firm sweeping surplus cash into its stock. Neuberger Berman’s analysis credits lighter capital requirements and strong capital-markets earnings for the record in financials, and points out that such programs make the buyer base more cyclical and credit-sensitive.

The same report found that companies spending heavily on AI infrastructure cut buybacks by 32% to $85 billion, while companies supplying that infrastructure raised theirs by 12% to $100 billion. The takeaway is that buyback totals are shaped by competing uses of cash, and a big total does not tell you which companies are strong.

What This Means for Your Portfolio

For long-term investors, funding source is a quality filter. Companies that repurchase shares from genuine surplus cash, keep debt manageable, and actually shrink their share count tend to deserve more trust than those that borrow to hit an EPS target. That does not guarantee better stock performance, but it improves the odds that a program survives a downturn.

Keep your expectations realistic. A buyback is not a dividend, and it does not put cash in your account. Its benefit depends on the company buying at sensible prices and sustaining the program over time.

Key Takeaways

Record buyback totals say nothing about how the money was raised.
Free-cash-flow funding is generally sturdier than borrowing, though price paid still matters.
Debt-funded buybacks add fixed obligations that do not flex in a downturn.
Compare buybacks with free cash flow, debt trends, coverage, and the actual share count.
Judge banks, tech, and heavy AI spenders by their own funding logic, not one rule.

Frequently Asked Questions

Are debt-funded buybacks always bad?

No. Modest borrowing by a financially strong company with stable cash flow can be reasonable. The risk grows when leverage is already high, cash flow is volatile, or the purchases are made mainly to lift per-share earnings.

Where can I see how a company funds its buybacks?

Open the company’s latest 10-K or 10-Q. The cash flow statement shows repurchases, operating cash flow, and debt issuance, while the balance sheet shows total debt.

Does the 1% excise tax change how buybacks are funded?

It adds a small cost, but it is paid by the company and applies to net repurchases above the $1 million exemption. For most large firms, it is unlikely to change whether they use cash or debt.

Sources

This article is for educational purposes only and is not investment, tax, or financial advice.