Alarming Spike Last Week in Banks' Short-term Funding Costs

By Lori Zager & Lisa James

The rates on overnight repurchase agreements—known as repos—suddenly rose above 9% last week.

Repos are a common way for banks and brokerage firms to borrow cash by pledging assets such as U.S. Treasury securities as collateral. In normal market conditions, repo rates closely track the Federal Funds rate, which was approximately 2% at the time.

In response to this spike in overnight borrowing costs, the Federal Reserve intervened through open market operations to inject additional liquidity into the banking system.

Most observers view this disruption as isolated or idiosyncratic. However, the last time the Fed conducted liquidity operations of this scale was during the financial crisis, raising questions and concern.

That said, unlike in 2008, the banking system appears to be in sound financial condition, and there has been no significant widening of credit spreads—typically a key warning signal of deeper stress.

The good news is that the Fed successfully stabilized repo rates and is expected to continue injecting liquidity as needed.

Why did overnight funding rates spike?

While there is no definitive explanation, the funding stress likely reflects a combination of unusually large short-term cash demands.

Contributing factors may include:

• Corporate and individual tax payment deadlines increasing cash demand
• Treasury dealers needing to finance large Treasury auction positions
• A gradual reduction in excess liquidity since 2017 as the Fed tightened policy

It is also possible that liquidity has been reduced too far relative to system needs.

At the same time, the U.S. Treasury has significantly increased issuance to finance rising government deficits, placing additional pressure on funding markets.

What happens next?

Federal Reserve Chair Jerome Powell has indicated the Fed will take steps to prevent similar disruptions in the future, including:

• More frequent open market operations
• Expanded use of longer-term repo facilities
• Potential increases in the size of the Fed’s balance sheet

In effect, the Fed is signaling a willingness to ensure sufficient liquidity in short-term funding markets to maintain stability.