Interest rate

Definition

The price of borrowing money, or the reward for lending it, shown as a percentage per year.

The story

Borrow $1,000 at 6% and you owe $60 a year in interest. Put $1,000 in a savings account paying 4% and the bank pays you $40. Almost every rate in the economy, from mortgages to credit cards to Treasury yields, takes its cue in part from the Fed's target rate.

Why markets watch it

Rates set how expensive it is to borrow, which feeds into spending, company profits and stock prices.

See it in the story

How money works · Chapter 3Jordan borrowsWhat is interest, and why can a loan grow so fast?How money works · Chapter 1Maya gets paidWhat is money, and where does it come from?

Connects to

Last seen in

The Close, Monday, November 2, 2026 →

We explain why it moves markets. What you do with it is your call. Commentary and education only. Not financial advice. All terms