A CD rate is the interest percentage a bank pays you for letting them hold your money for a set time

When you open a certificate of deposit (CD), you agree to leave a lump sum of money in the account untouched for a fixed period — usually three months to five years. In exchange, the bank pays you interest at a rate they set when you open the account. That rate is your CD rate, and it stays the same for the entire term, no matter what happens to interest rates in the wider economy.

The rate is expressed as a percentage per year. If you deposit $1,000 in a one-year CD with a 4.5% rate, you will earn $45 in interest over that year (before taxes). The bank locks in that 4.5% for the full twelve months. You cannot change it, and neither can the bank.

CD rates are almost always higher than savings account rates at the same bank. That higher rate is the bank's way of asking you to commit your money for a specific time. The longer you agree to lock your money away, the higher the rate usually is — a five-year CD typically pays more than a one-year CD.

Key Takeaways

  • A CD rate is a fixed interest percentage the bank promises to pay you for the entire term of the CD, whether that term is three months or five years.
  • CD rates are higher than regular savings account rates because you are agreeing not to withdraw your money early.
  • The rate does not change during the CD term, even if the bank raises or lowers rates for new CDs.
  • Longer CD terms usually come with higher rates, so a two-year CD typically pays more than a six-month CD at the same bank.
  • If you withdraw money before the term ends, you will pay an early withdrawal penalty that reduces or eliminates the interest you earned.

How banks set CD rates

Banks do not choose CD rates randomly. They are influenced by the federal funds rate — the interest rate the Federal Reserve sets for banks to lend to each other. When the Fed raises its rate, banks usually raise CD rates. When the Fed lowers its rate, CD rates typically fall.

But banks also compete with each other. If one bank offers 4.75% on a one-year CD and another offers 4.25%, customers will move their money to the higher rate. So banks watch what competitors are offering and adjust their own rates to stay competitive.

The bank's own costs also matter. If a bank is flush with deposits, it may lower CD rates because it does not need to attract more money. If deposits are scarce, it may raise rates to pull in more cash.

Why CD rates vary by term length

Banks almost always pay more for longer commitments. A three-month CD might pay 4.0%, a one-year CD might pay 4.5%, and a five-year CD might pay 5.0% at the same bank on the same day.

This happens because the bank is taking on more risk by locking in a rate for five years. If interest rates fall sharply, the bank is stuck paying you 5.0% while it can only lend that money out at lower rates. A longer term means a longer window for that to happen. To compensate, the bank pays you more.

The relationship is not always perfect — sometimes a one-year CD pays more than an 18-month CD, or rates invert in unusual ways — but the general pattern holds: longer terms, higher rates.

The difference between CD rates and APY

Banks advertise CD rates in two ways: the interest rate and the annual percentage yield, or APY. These are not the same thing, and the difference matters.

The interest rate is the raw percentage the bank pays. The APY includes that rate plus the effect of compounding — the way interest gets added to your account and then earns interest itself. If a CD compounds monthly, you earn a tiny bit of interest on the interest you already earned.

For most CDs, the difference is small. A 4.5% rate might have a 4.59% APY if it compounds monthly. But the APY is the number that tells you what you will actually earn, so it is the one to compare when you are shopping between banks.

What happens to your rate if you break the CD early

Your CD rate stays locked in for the full term — but only if you leave the money alone. If you withdraw before the term ends, you will pay an early withdrawal penalty. This penalty is a flat dollar amount or a number of months' worth of interest, depending on the bank and the CD term.

A common penalty is three months of interest. If you have a $10,000 CD earning 4.5% annually and you withdraw after six months, you might lose $112.50 in interest (three months of the interest you earned). You get your $10,000 back, but the penalty comes out of your earnings.

Some banks charge steeper penalties for longer-term CDs. A five-year CD might have a penalty of six months' interest, while a one-year CD might have a penalty of one month. Always check the penalty before you open a CD — it is part of the real cost of breaking your commitment early.

How CD rates compare to other savings options

A regular savings account at the same bank might pay 0.01% while a CD pays 4.5%. The CD rate is dramatically higher because you are giving up access to your money. That trade-off makes sense if you know you will not need the cash for the CD term.

A money market account often pays more than a savings account but less than a CD, and it usually lets you withdraw money without penalty. A high-yield savings account can sometimes match or beat CD rates while keeping your money accessible, though this varies by bank and by the moment.

The right choice depends on when you will need the money. If you are saving for something five years away, a five-year CD locks in a known rate. If you might need the money sooner, a high-yield savings account or money market account keeps your options open, even if the rate is slightly lower.

Why your CD rate matters less than you might think

A CD rate of 4.5% sounds good until you remember that interest is taxed as ordinary income. If you are in the 24% tax bracket, that 4.5% becomes roughly 3.4% after taxes. The bank reports your interest to the IRS on a Form 1099-INT, and you owe tax on it whether you withdraw the money or let it sit.

Inflation also eats into your real return. If your CD earns 4.5% but inflation is running at 3.5%, your money is only growing in real purchasing power by about 1%. You are earning interest, but your money is not getting much more powerful.

This does not mean CDs are a bad choice — they are safe, predictable, and better than keeping cash under a mattress. But the advertised rate is not the same as the money you actually keep.

Frequently Asked Questions

Can a bank change my CD rate before the term ends?

No. Once you open a CD, the rate is locked in for the entire term. The bank cannot lower it, and you cannot ask for a higher rate if rates rise. That is the whole point of a fixed-rate CD — certainty on both sides.

What does it mean if a CD rate is higher for a shorter term?

This is unusual but happens sometimes. It means the bank expects interest rates to fall, so it is willing to pay more now to lock in deposits before rates drop. It can also mean the bank has a specific short-term funding need. Either way, it is a signal to pay attention — if rates are expected to fall, a longer-term CD might be smarter.

Is the CD rate the same at every bank?

No. Banks set their own rates based on their costs, their competition, and their funding needs. On any given day, one bank might offer 4.75% on a one-year CD while another offers 4.25%. Shopping around for the best rate can earn you hundreds of dollars over the CD term.

Do I have to pay taxes on CD interest while the CD is still open?

Yes. You owe tax on the interest in the year it is earned, even if you do not withdraw it. The bank will send you a Form 1099-INT showing how much interest you earned, and you report that on your tax return.

What is the difference between a CD rate and the rate on a regular savings account?

A CD rate is higher because you commit to leaving your money untouched for a set time. A savings account rate is lower because you can withdraw anytime without penalty. The bank pays you for the restriction.