The federal funds rate is the interest rate banks charge each other for overnight loans.
That sounds like a banker's problem, not yours.
But it is the starting point for nearly every rate an American household pays or earns β credit cards, car loans, savings accounts, and, more loosely, mortgages.
With the Fed's rate back in the headlines after this week's hot August jobs report, this is the number everyone is arguing about.
The federal funds rate is the Fed's main lever on the whole economy
The Federal Reserve does not set the rate directly. It sets a target range, a quarter-point band such as 5.25% to 5.50%.
Banks lend their spare reserves to each other overnight, and the Fed nudges the actual market rate into that band.
Eight times a year, the Federal Open Market Committee (FOMC) meets and votes on whether to raise, lower, or hold the range.
Think of it as the thermostat for the economy. Turn it up and borrowing gets expensive, which cools spending and prices.
Turn it down and money gets cheap, which warms everything back up.
Why a rate for banks ends up on your credit card statement
The chain is short.
Most banks set their prime rate at the top of the Fed's range plus 3 percentage points. If the Fed range tops out at 5.50%, prime sits at 8.50%.
Credit cards, home equity lines of credit, and many small-business loans are priced as prime plus a margin.
So a quarter-point Fed move typically shows up on a variable-rate card within one or two billing cycles.
Car loans and personal loans follow more loosely, since lenders also weigh your credit score and the loan term.
Savings accounts and CDs move in the same direction, just slower
Banks pay more on deposits when the Fed rate is high β but they are rarely in a hurry to raise.
During the near-zero stretch of 2020 and 2021, the average savings account paid well under 0.1%.
By late 2023, with the Fed range at 5.25% to 5.50%, high-yield online accounts were paying 4% to 5%.
The Fed sets one overnight rate. Every other rate in your life is a markup on it.
The practical lesson: the direction of the Fed's rate tells you which way your savings yield is headed over the next few months.
Certificates of deposit lock in a rate for a fixed term, which is why they get popular whenever people expect cuts.
Mortgages follow the bond market more than the Fed
This is the part that surprises most people.
The 30-year fixed mortgage rate tracks the yield on 10-year Treasury bonds, not the fed funds rate.
Bond yields reflect what investors expect inflation and Fed policy to be years from now. So mortgage rates can rise even while the Fed is cutting, which is exactly what happened in late 2024.
Adjustable-rate mortgages and home equity lines are the exception. They reset off short-term benchmarks and feel Fed moves quickly.
A Fed move does not change what you already owe
A Fed cut does not lower your existing fixed-rate loan. Your car payment and 30-year mortgage stay put unless you refinance.
It does not directly set stock prices, though markets react hard to what the Fed says about the future.
And it does not fix inflation overnight. Rate changes take roughly 12 to 18 months to work fully through the economy.
You can see when the next decision is due on the Fed's own meeting calendar.
Check the FOMC Meeting CalendarOfficial Federal Reserve schedule and statements β
None of this is personal financial advice. How a rate move affects you depends on what you owe and what you hold.
