Why Public Credit Can Unlock Private Credit

The most revealing result in the SBA disaster-loan study is not that the government lent money. It is that recipients later held more non-SBA private debt, more paid-on-time balances, and more contractual relationships. This chapter tests what that pattern means. Crowd-in could reflect repaired assets and lower uncertainty, but it could also reflect substitution, a subsidy, a signal from approval, or a change in borrower demand. The distinction matters because only some of those mechanisms explain why a liability can improve access to finance rather than merely replace it.

Five Ways to Read a Rise in Private Debt

The natural first hypothesis is crowd-out. If a government loan pays for repairs that a private lender would otherwise finance, the recipient should need less private debt. A firm just below the SBA threshold might borrow privately, while a firm just above it uses the public loan instead. Under that story, approval would reduce non-SBA balances or leave them unchanged. More government debt would mean less private debt.

The study finds the opposite. Recovery-loan approval increased non-SBA private debt balances by nearly $18,000, a little more than twice the sample mean. It increased paid-on-time private balances by about $16,000 and increased the number of private contracts by 0.6, or about 116% of the mean. The contracts measure more than loans: they include leases, utilities, telecommunications, and other time-sensitive obligations. The result is therefore not just that banks lent more. It is that the recipient firm regained a wider set of financial and operating relationships.

A second hypothesis is simple capitalization. Perhaps the public loan leaves the firm with more cash, so private lenders see a larger buffer and lend more. That explanation may contribute to the result, but it is incomplete. In the studied program, later secured private debt is generally junior to the SBA claim. A private lender is not simply looking at a better-funded borrower while retaining the same priority. The lender is considering a lower-priority claim behind the government loan. If private debt rises under those conditions, the repaired firm must look safer as an operating business, not merely richer in cash.

A third hypothesis is approval as a signal. A lender might treat SBA approval as an expert certification that the business is worth supporting. If so, private debt should increase soon after approval, before the physical repair is complete. The result would be a signaling effect: the government’s decision communicates information about the borrower, and private lenders follow it.

That interpretation is weakened by the study’s identification design. Near the FICO thresholds, approval changes because of a rule-driven discontinuity, not because the SBA suddenly learns that the firm is better. The approval itself contains little credible information about an underlying quality difference between firms just above and below the cutoff. The authors also find that private debt increases around six months after approval, roughly matching the repair period. A delay is more consistent with a change in the firm's condition than with an immediate certification effect.

A fourth hypothesis is borrower demand. Approved firms may simply decide to apply for more private credit, while rejected firms may give up. If the government loan raises confidence or creates a need for expansion, the observed private debt increase could be demand-driven rather than caused by lenders changing their supply of credit. The study examines credit inquiries, which occur when a potential lender checks a firm's record. It finds no significant effect on inquiries, suggesting that treated and control firms sought private credit at similar rates.