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News3 min read·2026-10-20DisconfirmAI Editorial

BIS Research: U.S. Liquidity Coverage Ratio Regulation Increased Private Credit Volumes by Nearly 50% in High-Exposure Counties

A BIS working paper exploits variation in the share of LCR-constrained banks across U.S. counties and finds that private credit volumes rose by nearly 50% in high-exposure counties following LCR introduction, with an economic magnitude comparable to the 2012 CCAR stress-test capital requirement shock — offering a quantifiable regulatory supply-gap explanation for private credit expansion.

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Original publication time 2026-10-20 20:00 GMT+8

The private credit market has expanded rapidly over the past decade-plus, becoming a major funding source for a wide range of firms. Common explanations include low interest rates, reach for yield, and credit displacement after bank capital regulation tightened. But these are largely macro-level correlations that cannot distinguish how much growth came from banks actively retreating versus natural demand expansion. A BIS working paper (No. 1388, published October 2026) uses U.S. county-level data to provide causal identification.

Following the 2008–09 financial crisis, the Basel Committee on Banking Supervision introduced global liquidity standards to mitigate the risks of funding illiquid assets with short-term liabilities. In the United States, these standards resulted in the Liquidity Coverage Ratio (LCR) requirement for large banks: they must hold sufficient high-quality liquid assets to cover short-term funding outflows. This made it costly for banks to fund long-term illiquid loans with short-term deposits, giving them an incentive to reduce such assets. Coincidentally, private credit — loans originated directly by non-banks and held on the balance sheets of private credit funds and business development companies — surged in the same period.

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The paper's authors, Sebastian Doerr, Gaston Gelos, and Vesa Pursiainen, exploit cross-county variation in the initial share of LCR-constrained banks to identify causal effects. The logic: if the LCR genuinely drove lending migration from banks to private credit, then counties with higher initial LCR-bank exposure should show significantly stronger private credit growth after the LCR's introduction. The results support this prediction: a one standard deviation higher ex ante LCR footprint in a county corresponds to nearly 50% higher private credit volumes following LCR implementation.

How does the magnitude compare? The paper benchmarks its LCR effect against the increased capital requirements from the 2012 Comprehensive Capital Analysis and Review (CCAR) stress tests, finding the two comparable in economic magnitude. In other words, liquidity regulation's push on private credit is no less significant than capital regulation's.

The authors also provide a test consistent with loan supply effects: the relationship between banks' LCR footprint and private credit is stronger in industries more reliant on credit. This result aligns with a supply-side interpretation — if growth were entirely driven by local firms' credit demand, one would not expect a differential relationship tied to specific industries' credit reliance.

The paper explicitly draws a boundary: while the shift in lending from deposit-financed banks to private credit funds could imply a substantial drop in overall liquidity risk, total systemic risk effects are complex, and assessing them is beyond the scope of the paper. For investors, the study's value lies in this: when evaluating the asset sourcing and growth sustainability of private credit funds, one can distinguish which growth came from regulation-driven structural supply gaps (potentially reversible if the regulatory environment changes) and which came from genuine demand.

Sources

  • 原始出处bis.org↗
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