Federal Funds Rate: Definition & Its Impact

What Is the Federal Funds Rate?

By Matthew DiLallo – Updated Oct 10, 2025 at 3:47 AM EST

Key Points

Federal Reserve raised fed funds rate to 5.25-5.5%, highest in 20+ years.
High fed funds rate increases other key interest rates, affecting borrowing.
Investors and borrowers face higher costs, potentially slowing the economy.

The federal funds rate is the benchmark interest rate at which banks lend each other money. It has a direct bearing on many other rates and is the concept we're talking about when we say, "The Fed lowered rates today."

As we've seen throughout the past two decades, disasters can and do happen -- sometimes for no particular reason -- and the Fed will use the tools at its disposal to calm the economy while stimulating investment. The federal funds rate is one of those tools.

Loading paragraph...

Slips of paper with various percentages written on them and a single slip with a question mark in the center. — Image source: Getty Images.

Loading image...

What is the federal funds rate?

As noted, the federal funds rate is the interest rate at which banks lend each other money. It's also known as the overnight lending rate. The Federal Open Market Committee (FOMC) meets eight times every year to set the rate, which is typically expressed as a range.

Loading paragraph...

Interest Rate

An interest rate is the cost of borrowing money or the premium you get for lending money. Learn how interest rates affect the economy.

Loading definition...

At its meeting on July 26, 2023, the Federal Reserve raised the federal funds rate by 0.25%, setting it between 5.25% and 5.5%. This range is used to influence a number of other important interest rates we see in daily life. The increase marked its highest level in more than 20 years.

Federal Reserve

The Federal Reserve, often referred to as “the Fed,” is the central bank of the United States.

Loading definition...

Federal funds rate over time

After a spike in the early 1980s, when the federal funds rate rose to almost 20%, we've seen a steady decrease in the benchmark rate. A declining federal funds rate has had a corresponding impact on many other interest rate offerings. As you can see from the chart below, there's a clear positive correlation (albeit imperfect) between the federal funds rate and the 30-year mortgage rate.

Loading paragraph...

Effective Federal Funds Rate Chart — Effective Federal Funds Rate data by YCharts.

Loading image...

Simply by considering some of the major events of the past several decades, we can get clues about how and why the federal funds rate has moved as it has. In the mid-2000s, interest rates had begun to rise rapidly, but the housing and financial crisis abruptly brought rates to zero for almost 10 more years.

As rates slowly began to rise again in 2018, the coronavirus pandemic quickly shut the door and brought rates down quickly. Meanwhile, recent surging inflation has caused the Federal Reserve to drive rates higher again.

Loading paragraph...

Impacts of the federal funds rate

While you might have thought you were free of the federal funds rate when you walked out of your Economics 101 final exam, it turns out you'll probably need to be aware of it for the rest of your life. The federal funds rate matters greatly for a number of groups:

Stock market investors: When the FOMC lowers the federal funds rate, the price of money -- and, therefore, the cost of borrowing -- becomes cheaper. This typically has a positive short-term effect on broad market indices: As the cost of borrowing falls, future projected earnings increase.
Fixed-income investors: People who hold fixed-income products, like bonds, are affected by increases in interest rates. Without getting too technical, as interest rates rise, bond prices fall.
Potential and current homeowners: If you have a mortgage, you've agreed to borrow money at a particular interest rate, potentially subject to adjustments. Fixed-rate mortgage holders don't need to worry about their interest rate unless they're looking to refinance. On the other hand, if you're in the market for a new mortgage, you'll look at interest rates to determine if and how much you want to borrow. In either case, the price at which you borrow money matters to you.
Anyone considering a loan: Interest rates will matter if you're looking for a car loan, personal loan, or any other sort of loan. If you consider that the federal funds rate is simply a mechanism for determining the price of money, you'll see that it matters for all borrowers and lenders in some fashion.

Loading paragraph...

Federal funds rate versus other interest rates

The federal funds rate, as previously mentioned, is the overnight interest rate at which banks lend to each other. The federal funds rate is, importantly, an interest rate unto itself.

Second, the federal funds rate heavily influences the interest rates charged in the broader economy (and to consumers) by serving as a benchmark. One of the most cited rates is the prime rate, which is the interest rate banks charge to their best customers (or those most qualified to pay). The prime rate is directly influenced by the federal funds rate.

Next, the federal funds rate is not to be confused with the discount rate, which is the rate of interest the Federal Reserve charges to make loans to banks and other depository institutions.

Last, the federal funds rate is closely linked to short-term interest rates, such as Treasury bill yields, but is not directly predictive of long-term rates. Simply put, short-term changes in interest rates influence -- but do not solely determine -- longer-term rates. A lot can happen over several decades.

What does this mean for you?

It's unlikely you'll be quizzed on this information anytime soon, but it's good to know what the federal funds rate is and how it can influence the other interest rates you may come across in everyday life.

When the Federal Reserve chair talks about lowering or raising the federal funds rate, you'll know this very well might affect the cost of your new fixed-rate mortgage or help with the cost/benefit analysis for taking a loan against your vehicle. Simply knowing the federal funds rate is set by the FOMC, that it can affect many of the rates you see, and that it can affect your investment and borrowing decisions goes a long way.

As of mid-2023, the federal funds rate had risen to its highest level in more than 20 years to combat elevated inflation. That's making it a lot more expensive to borrow money, which will likely slow the economy. So now might not be the best time to be a borrower.

Loading paragraph...

About the Author

Matt DiLallo has been a contributing Motley Fool stock analyst specializing in the energy, industrials, and real estate sectors since 2012. He also covers dividend-paying stocks, pre-IPO companies, ETFs, and other investing topics. He holds an MBA from Liberty University.

TMFmd19

@MatthewDiLallo

The Motley Fool has a disclosure policy.