Federal Funds Rate: How the Fed Influences US Economy

The effective federal funds rate (EFFR) is the median interest rate at which banks lend reserve balances to each other overnight, serving as a key benchmark in financial markets and central to US monetary policy [1]. This rate directly influences a wide range of market interest rates, impacting the overall level of economic activity, employment, and inflation in the United States [1].

How the Fed Sets the Rate

The Federal Open Market Committee (FOMC) typically meets eight times a year to determine a target range for the federal funds rate, which it uses to achieve its policy goals based on US economic conditions [1]. While commonly referred to as "setting interest rates," the Federal Reserve influences the effective rate towards this target range through adjustments to its administratively set interest rates, primarily the interest on reserve balances (IORB) [1]. The IORB, which the Fed pays to banks for holding funds at the Federal Reserve, effectively sets a floor for the federal funds rate, as banks are unlikely to lend to each other below this risk-free rate [1].

Other tools at the Fed's disposal include the overnight reverse repurchase agreement facility, which helps further ensure a floor for the rate, and the discount rate, which is the interest rate at which the Fed loans funds to eligible institutions [1]. The discount rate effectively sets a ceiling for the federal funds rate, making it unlikely for banks to lend at higher rates [1]. Open market operations, involving the buying or selling of government securities, are also used to add or remove liquidity from the banking system, which is crucial for the effectiveness of other tools [1].

Market Impact and Historical Context

Changes in the federal funds rate directly impact banks' willingness to lend and borrow, influencing the availability of cash in the economy [1]. A higher rate discourages interbank borrowing, making cash harder to procure, while a lower rate encourages borrowing and investment [1]. This regulatory tool is used to control the overall operation of the US economy [1].

The federal funds rate is one of two primary interest rate benchmarks closely monitored in the bond market, the other being the 10-year Treasury yield [2]. The 10-year Treasury yield is often seen as a benchmark for mortgages and corporate borrowing, while the federal funds rate influences short-term borrowing costs [2]. Recently, the 2-year Treasury yield climbed to 4.14% as of July 2, 2026, which can pressure prices of existing Treasury funds but allows newly purchased bonds and Treasury ETFs to generate higher income [2]. For instance, the iShares 1-3 Year Treasury Bond ETF (SHY), which tracks a range of short-term Treasury securities, currently offers a 30-day SEC yield of 4.00% after its expense ratio [2].

Historically, the federal funds rate has seen significant shifts. Between December 2008 and December 2015, the target rate remained at a historic low of 0.00–0.25% in response to the 2008 financial crisis [1]. More recently, in October 2019, the target range was 1.50–1.75%, which then dropped to 0.00–0.25% by March 15, 2020, following a full percentage point drop less than two weeks prior [1].

What to watch

• FOMC meeting announcements: The Federal Open Market Committee typically meets eight times a year, and any changes to the target federal funds rate range are announced following these meetings [1].
• CME Group FedWatch tool: This tool provides market participants with implied probabilities of future Fed rate changes based on CME Group 30-Day Fed Fund futures prices [1].
• Treasury yields: Monitor movements in the 2-year and 10-year Treasury yields, as these benchmarks reflect market expectations for short-term and long-term interest rates, respectively [2].

The federal funds rate remains a critical indicator for understanding the Federal Reserve's monetary policy stance and its broad implications for financial markets and the US economy.