The relationship between reserves and economic activity may be more complex than traditionally assumed. While higher reserve balances are often associated with easier financial conditions, emerging research suggests that reserve creation can also affect bank lending through balance-sheet constraints.
At the 2022 ECB Research Conference, researchers presented “The Reserve Supply Channel of Unconventional Monetary Policy,” which examined how large-scale reserve creation influenced bank lending under the post-financial-crisis regulatory framework. The study found that, all else equal, additional reserves would crowd out bank lending because reserves and loans compete for balance-sheet capacity. From 2008 to 2017, each dollar of reserves injected was estimated to crowd out 19 cents of corporate bank credit.
Earlier New York Fed research reached a similar conclusion, noting that large reserve balances may not stimulate credit creation and can, under certain conditions, have contractionary effects on lending. Together, these findings suggest that reserve growth may support financial-market stability while simultaneously constraining some forms of credit expansion.
This raises the possibility that balance-sheet expansion could contribute to lower market volatility even as lending conditions become more restrictive. Such dynamics may help explain periods in which asset markets remain resilient despite signs of economic softness.
