Debt Overhang: Why Indebted Firms Skip Good Investments
Debt Overhang: Why Indebted Firms Skip Good Investments
A business owing $100,000 can invest $20,000 in a riskless project that adds $30,000 of value. The owner says no, because in the bad state the lender keeps every dollar the project creates, leaving the owner $15,000 of gain for $20,000 of cost. A project worth $10,000 to the business never happens. That is debt overhang, and the fixes all come down to deciding who keeps the gain.
What you'll learn
Good projects that never happen
In 1977 Stewart Myers identified a cost of debt that has nothing to do with default itself. A firm carrying more debt than it can comfortably repay may turn down investments that would increase its total value, because much of the gain would go to its existing creditors rather than its owners. The debt hangs over every new decision. Myers called it underinvestment; it is now usually called debt overhang.
It is the mirror image of the risk shifting examined in our moral hazard analysis. There, leverage tempts owners into risky projects that destroy value. Here, leverage leads owners to skip safe projects that create it. Both come from the same source: owners with limited liability bear the cost of a decision but share its benefit with lenders.
Debt overhang, worked
A business owes $100,000, due next year. Its existing assets will be worth $150,000 if conditions are good and $60,000 if they are poor, each equally likely. The owner can invest $20,000 of new money in a project that adds $30,000 of value in either case. The project has a net present value of $10,000 and no risk. Any owner without debt would take it.
| Good state | Poor state | Expected value to owner | Expected value to lender | |
|---|---|---|---|---|
| Without the project | Owner $50,000; lender $100,000 | Owner $0; lender $60,000 | $25,000 | $80,000 |
| With the project | Owner $80,000; lender $100,000 | Owner $0; lender $90,000 | $40,000 | $95,000 |
| Change | +$15,000 | +$15,000 |
The owner rationally declines, and $10,000 of value is never created. Nobody behaved badly. The lender would be happy for the project to happen and the owner would be happy to do it if the gain were theirs. The problem is that the existing debt claims the project's payoff in the state where the business cannot repay in full, and no single party can fix that alone.
Three ways out, and who gains
The overhang is a bargaining problem: there is $10,000 of value to divide, and the question is how to divide it so that the investment happens.
| Fix | How it works here | Owner gain | Existing lender gain |
|---|---|---|---|
| Write the debt down | Reducing the face value to $80,000 makes the project worth exactly its $20,000 cost to the owner | +$10,000 | $0 |
| Senior new money | A $20,000 loan repaid ahead of the old debt funds the project; the new lender is repaid in full in both states | +$5,000 | +$5,000 |
| Do nothing | The project is not funded | $0 | $0 |
A write-down to $80,000 is the most the lender can forgive without losing anything. Without the project its claim is worth $80,000 in expectation; with a face value of $80,000 and the project funded, it is repaid $80,000 in both states. The whole $10,000 of new value goes to the owner. Krugman showed the same logic for sovereign debt: forgiving part of an overhang can leave creditors no worse off, and sometimes better off, than insisting on the full claim.
Senior new money splits the gain. When the new $20,000 is repaid first, the old debt receives $100,000 in the good state and $70,000 in the poor state, worth $85,000 instead of $80,000, while the owner's position rises from $25,000 to $30,000. This is the logic of debtor-in-possession financing in Chapter 11, where the Bankruptcy Code allows new lending to take priority over existing claims precisely so that viable businesses can keep investing. Per our bankruptcy analysis, that priority is one of the most important things a reorganization offers.
Households carry it too
A homeowner whose mortgage exceeds the value of the home faces the same arithmetic. Spending $10,000 on a roof that adds $15,000 of value makes sense to an owner with equity. To an owner who expects to default, the added value accrues to the lender at foreclosure. Melzer found that U.S. homeowners at risk of default cut spending on home improvements and maintenance sharply during the housing downturn, while their spending on items they could take with them, such as cars and appliances, fell much less.
- Underwater homes deteriorate, lowering the lender's eventual recovery as well as the neighborhood's.
- Overhang reduces effort, not only investment. A borrower whose extra earnings would go entirely to creditors, as with some wage garnishment, has weaker reasons to earn more. Per our student loan analysis, income-driven repayment plans face a version of this trade-off by design.
- Forbearance without forgiveness can prolong it. Per our forbearance analysis, a pause that leaves the full balance intact postpones the overhang rather than removing it.
What it means for lenders
- Holding out can cost the holdout. Per our loan extension analysis, extending an overhung loan at full face value leaves the borrower without reason to invest, and the collateral and business decay.
- Covenants can prevent the fix. Per our covenant analysis, negative pledges and debt limits stop the borrower from raising senior new money even when it would benefit the existing lender.
- Many creditors make it harder. Each creditor would prefer the others to write down first. Per our guarantee analysis, layered claims and guarantees multiply the parties who must agree, which is why formal processes that bind holdouts exist.
- Recovery depends on the business continuing to invest. Per our recovery analysis, the best recoveries on troubled loans often come from restructurings that restore the borrower's incentive to keep building value.
The counter-case
Overhang as a reason to forgive is easy to abuse
Every borrower seeking a write-down can describe a project that the debt prevents. Lenders cannot easily verify whether the project exists, whether it is as valuable as claimed, or whether the borrower would invest if relieved. A lender that forgives on the strength of an unverifiable claim invites others to make the same claim, and per our moral hazard analysis, the prospect of future relief can encourage borrowing that creates the overhang in the first place. Empirical estimates of how much investment overhang actually prevents also vary widely, and some of the drop in investment by heavily indebted firms reflects poor prospects rather than the debt itself.
These objections argue for structured fixes, not against the concept. Senior new money tied to a specific project, contingent write-downs that the lender recovers if the business does well, and debt-for-equity swaps all address overhang while limiting the gain to borrowers who misrepresent. Per our re-default analysis, modifications that reduce the balance tend to hold better than those that only lower payments, which is consistent with overhang affecting borrower behavior.
Testable implications
- Among otherwise similar firms, investment should fall as debt approaches or exceeds asset value, beyond what weaker prospects explain.
- Principal reductions should increase borrower investment and maintenance more than equivalent payment reductions, because only the former changes who gains from new value.
- Firms able to raise senior or project-specific financing should show smaller investment declines when their existing debt is overhung.
- Collateral maintained by underwater borrowers should deteriorate faster, lowering recoveries relative to otherwise similar collateral with positive equity.
The second implication is directly useful to anyone designing a workout. Per our business failure analysis, the businesses that recover from distress are usually the ones that kept investing through it, and a restructuring that leaves the overhang intact asks them to invest for someone else's benefit.
Frequently asked questions
Existing debt large enough that creditors capture much of any new investment's value, so owners skip value-creating projects.
With $100,000 owed and assets worth $150,000 or $60,000, a $20,000 project adding $30,000 gives the owner only $15,000, so it is declined.
Write the debt down or let new money rank senior. In the example, senior new money lifts both the lender and owner by $5,000.
Yes. Underwater homeowners cut maintenance and improvements, and principal reductions address this more than payment cuts.
Key takeaways
- Debt overhang leads indebted owners to decline investments that would raise total value.
- In the example, a riskless $10,000 project returns only $15,000 to an owner who invests $20,000.
- The lender captures the project's payoff in the state where the business cannot repay in full.
- A write-down to $80,000 leaves the lender no worse off and gives the owner the full gain.
- Senior new money splits the gain: old debt rises from $80,000 to $85,000 and the owner from $25,000 to $30,000.
- Underwater homeowners cut maintenance and improvements for the same reason.
- Unverifiable claims make write-downs easy to abuse, which favors structured fixes.
- Principal reductions should change behavior more than payment reductions.
References
- Myers, S. C. (1977). Determinants of Corporate Borrowing. Journal of Financial Economics, 5(2), 147–175.
- Krugman, P. (1988). Financing vs. Forgiving a Debt Overhang. Journal of Development Economics, 29(3), 253–268.
- Hennessy, C. A. (2004). Tobin's Q, Debt Overhang, and Investment. Journal of Finance, 59(4), 1717–1742.
- Melzer, B. T. (2017). Mortgage Debt Overhang: Reduced Investment by Homeowners at Risk of Default. Journal of Finance, 72(2), 575–612.
- Bankruptcy Code, Obtaining Credit, 11 U.S.C. § 364.
This analysis is educational and does not constitute investment, credit, legal or restructuring advice. Asset values, debt amounts, probabilities and project returns are stylized illustrations and do not describe any particular borrower or lender. Empirical findings summarized are subject to debate in the literature.