A CD locks your money away for a set time in exchange for a may provide interest rate

A certificate of deposit (CD) is a savings product where you give a bank or credit union a lump sum of money, agree not to touch it for a specific period, and receive a fixed interest rate in return. The bank pays you interest on top of your deposit, and at the end of the term — which might be three months, one year, five years, or longer — you get your original money back plus all the interest earned.

The trade-off is simple: you lose access to your cash during the term. If you withdraw before the maturity date, you pay an early withdrawal penalty, usually a few months' worth of interest. In exchange, you get a higher interest rate than a regular savings account offers, and that rate is locked in and may provide — it will not change, no matter what happens to market rates.

Key Takeaways

  • You deposit a fixed amount of money for a fixed period (the term), and the bank guarantees an interest rate for that entire time.
  • At maturity, you receive your original deposit plus all accrued interest; you can then withdraw the money or roll it into a new CD.
  • Breaking a CD early triggers a penalty, typically equal to a few months of interest, so only use CD money you will not need during the term.
  • CD rates vary by bank, term length, and deposit amount, so comparing offers across institutions can add hundreds of dollars to your earnings.
  • CDs are FDIC-insured up to $250,000 per depositor per bank, making them one of the safest places to keep money.

How the interest rate and term work together

When you open a CD, you choose two things: the term length and the deposit amount. The bank then quotes you an interest rate for that specific combination. A one-year CD at one bank might pay 4.50%, while a five-year CD at the same bank might pay 5.00%. Longer terms usually pay higher rates because the bank gets to hold your money longer.

Interest on a CD accrues — meaning it builds up — either monthly, quarterly, or annually, depending on the CD. Some banks add the interest to your account each month; others hold it until maturity. Either way, you earn interest on the interest (called compounding), so your balance grows faster than it would in a regular savings account. The exact amount you earn depends on the rate, the term, and how often interest compounds.

You do not have to do anything while the CD is active. The bank handles everything automatically. On the maturity date, your term ends, and you own the full balance — your deposit plus all interest.

What happens when your CD reaches maturity

On the maturity date, you have choices. You can withdraw the entire balance (deposit plus interest) and move the money wherever you want. You can also let the CD renew or roll over into a new CD at the same bank, usually for the same term length, at whatever rate the bank is offering at that time. Most banks give you a grace period — often 7 to 10 days — to decide before they automatically renew.

If you do nothing and the bank automatically renews your CD, you are locked in again for another full term at the new rate. If rates have dropped, you will earn less; if rates have risen, you will earn more. This is why it pays to check your maturity date and shop around before renewal — you can move your money to a different bank offering a better rate.

Early withdrawal penalties and when they apply

If you need your money before the maturity date, you can withdraw it, but you will pay a penalty. The penalty is usually stated as a number of months of interest. A CD with a "three-month penalty" means you lose three months' worth of the interest you would have earned. On a $10,000 CD earning 4.50% annually, that penalty would be roughly $112.50.

The penalty comes out of your interest earnings first. If you have not earned enough interest yet to cover the full penalty, the bank takes the difference from your principal — meaning you get back less than you deposited. This is why CDs are best for money you know you will not need during the term.

Some banks offer no-penalty CDs, which let you withdraw without a penalty, but they pay lower interest rates in exchange. These are useful if you want the safety and structure of a CD but need some flexibility.

FDIC insurance and how your money stays safe

Money in a CD at an FDIC-insured bank is protected up to $250,000 per depositor per bank. This means if the bank fails, the federal government guarantees you will get your money back, up to that limit. If you have $250,000 or more, you can open CDs at multiple banks to stay fully protected.

Credit unions offer similar protection through the NCUA (National Credit Union Administration), also up to $250,000 per member per institution. This protection applies whether your CD is active or has reached maturity — as long as the money is in the account, it is covered.

Comparing CD rates and terms across banks

CD rates change constantly and vary widely between banks. A large national bank might offer 3.50% on a one-year CD, while an online bank offers 4.75% for the same term. Over one year on a $10,000 deposit, that difference adds up to roughly $125 in extra earnings.

When comparing CDs, look at the annual percentage yield (APY), which includes the effect of compounding. Check the term length, the penalty amount, and whether the bank allows you to add money to the CD after opening it (some do, some do not). Online banks and credit unions often pay higher rates than brick-and-mortar banks because they have lower overhead costs.

You can search for current CD rates on financial websites that aggregate offers from multiple banks, or visit banks directly. The rate you see is the rate you lock in — it does not change for the life of the CD.

CDs versus savings accounts and money market accounts

A regular savings account lets you withdraw money anytime without penalty, but it pays a much lower interest rate — often 0.01% to 0.50%. A CD pays more (currently 4% to 5% at many banks) but locks your money away. If you need the cash within a few months, a savings account is safer. If you have money you will not touch for a year or more, a CD earns significantly more.

A money market account sits between the two: it pays higher interest than a savings account (though usually less than a CD) and lets you write checks or make a few withdrawals per month without penalty. Money market accounts are useful if you want some growth and some flexibility, but they do not offer the may provide rate that a CD does.

Frequently Asked Questions

Can I withdraw money from a CD before it matures?

Yes, but you will pay an early withdrawal penalty, usually equal to a few months of interest. The penalty is deducted from your balance, so you may receive less than you deposited if you have not earned enough interest yet. Some banks offer no-penalty CDs that let you withdraw without a fee, though they pay lower rates.

What is the difference between APR and APY on a CD?

APR (annual percentage rate) is the interest rate alone. APY (annual percentage yield) includes the effect of compounding — how much you actually earn when interest is added to your account and earns interest itself. Always compare CDs using APY, because it shows your true earnings.

What happens if I do not withdraw my money when the CD matures?

Most banks automatically renew your CD into a new term at whatever rate they are currently offering. You usually have a grace period of 7 to 10 days to withdraw the money or cancel the renewal. Check your maturity date and shop around before renewal, because rates may have changed.

Are CDs safe if the bank fails?

Yes. CDs at FDIC-insured banks are protected up to $250,000 per depositor per bank. If the bank fails, the federal government guarantees you will receive your full balance. Credit unions offer the same protection through the NCUA.

Should I open a CD or keep money in a savings account?

Use a CD if you have money you will not need for at least several months and want a higher, may provide rate. Use a savings account if you might need the cash sooner or want to keep withdrawing and depositing money. Many people use both: a savings account for emergencies and a CD for longer-term goals.