Private credit was sold as a calmer way to earn higher yield. The latest marks and default data show that calm is now being tested.
The private credit boom is no longer just a story about banks stepping back and alternative lenders stepping in. It is becoming a story about what happens when years of easy private money meet higher rates, weaker borrowers and business models that are suddenly harder to value.
That matters for founders because private credit has become one of the quiet engines behind growth financing. It helped companies refinance when public markets were shut, gave private equity sponsors another way to fund deals, and offered venture-backed businesses a route around traditional bank lending. When that market tightens, the pain does not stay inside Wall Street portfolios. It reaches hiring plans, bridge rounds, acquisition talks and debt maturities.
According to a Reuters review of first-quarter filings from 14 major business development companies, the aggregate fair value-to-cost ratio on their investments fell 103 basis points to 98.55% at the end of March, leaving the loans marked about $1.2 billion below amortized cost. That is not a panic signal by itself. But it is a clear break from the pitch that private credit can deliver equity-like returns with bond-like steadiness.
The pressure is also showing up in defaults. Fitch Ratings reported that the U.S. private credit default rate reached 6.0% for the twelve months ended April 2026, up from 5.7% in March and the highest reading since its index began in 2024. Proskauer's Private Credit Default Index, which tracks 697 senior-secured and unitranche loans totaling $189.2 billion, put defaults at 2.73% in the first quarter, up from 1.84% two quarters earlier. Different indexes measure different slices of the market, but the direction is difficult to ignore.
Private credit lenders liked software because the revenue looked sticky. Subscription contracts, high gross margins and sponsor backing made many enterprise software companies look safer than old industrial borrowers with factories and inventory. That logic worked when growth was strong and interest costs were easier to carry.
Artificial intelligence has changed the conversation. Some software borrowers now face a tougher question from lenders: are their products still defensible, or are they exposed to cheaper AI-native alternatives? That does not mean every software loan is in trouble. It does mean the old shorthand of recurring revenue equals safety is not enough.
The markdowns at large listed lenders show how this is moving from debate to valuation. Blackstone Secured Lending Fund's fair value-to-cost ratio fell 122 basis points to 97.52%, while Goldman Sachs BDC dropped 119 basis points to 94.88%, based on the Reuters review. Blackstone's fund also reported a 2.4% drop in net asset value per share in the first quarter, while BlackRock TCP Capital reported a 5% decline. These are still diversified portfolios, but investors are being reminded that private marks can move.
There is a second issue. If a borrower cannot pay interest in cash, lenders can amend terms, extend maturities or allow payment-in-kind interest. That can prevent an immediate default, and sometimes it is the right answer. But it can also delay recognition of stress while the loan balance grows. For startup operators, this is worth understanding because a refinancing market can look open until the day pricing changes.
Founders should plan for tighter debt
The immediate risk is not that private credit disappears. The market is too large, too useful and too deeply embedded in institutional portfolios for that. Pension funds, insurers, endowments and wealth platforms still need income, and direct lenders still have capital to deploy. The change is that capital is likely to become more selective.
That selectivity will matter most for companies that used debt to extend runway without fixing unit economics. A software company with slowing growth, high customer acquisition costs and a maturity in the next 12 months may find that the next lender wants more equity cushion, higher pricing, tighter covenants or all three. A growth-stage company that assumed private credit would always be available could discover that lenders now want proof before patience.
There is also an investor-side feedback loop. Institutional limited partners that allocate to private credit often sit in the same capital ecosystem as venture funds and growth equity managers. If private credit portfolios take larger markdowns, some LPs may slow new commitments elsewhere because their broader private-market allocation has become harder to balance.
Retail money is another signal to watch. Reuters noted that Blue Owl's largest retail credit fund accepted just $26.4 million in subscriptions on May 1, compared with $480 million at the same time last year. When inflows slow, managers have less room to be generous with borrowers. That does not automatically create a credit crunch, but it changes the tone of negotiation.
For entrepreneurs, the practical lesson is simple. Treat debt as a market, not a promise. If your company has loans maturing in the next year, start conversations early, model refinancing at less friendly terms and avoid assuming that last year's lender appetite will still be there in the second half of 2026. Good companies will still get financed. Weak stories will face more questions.
The private credit industry built its reputation by moving faster than banks and absorbing risk that public markets did not want. Now it has to prove that the underwriting was as strong as the marketing. The next few quarters will show whether this is a manageable reset or the start of a harder financing cycle for the private companies that came to depend on it.
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