A certificate of deposit locks your money away for a set time in exchange for a higher interest rate than a savings account

A certificate of deposit (CD) is an agreement between you and a bank or credit union. You give them a lump sum of money, they promise to hold it untouched for a specific period—anywhere from three months to five years or longer—and in return they pay you a fixed interest rate. That rate is usually higher than what you'd earn in a regular savings account, sometimes significantly higher depending on how long you're willing to wait.

The trade-off is simple: your money is locked. If you withdraw before the term ends, you pay a penalty. That penalty is usually a certain number of months' worth of interest. So if you open a one-year CD earning 4.5% and pull the money out after six months, the bank might charge you three months of interest as the penalty. You still get your principal back, but you lose some of the gain you were counting on.

CDs are insured by the Federal Deposit Insurance Corporation (FDIC) if held at a bank, or by the National Credit Union Administration (NCUA) if held at a credit union. That means if the institution fails, your money up to $250,000 is protected. This makes CDs one of the safest places to park money you know you won't need.

Key Takeaways

  • You deposit a fixed amount, agree not to touch it for a set term, and receive a may provide interest rate that does not change.
  • Early withdrawal triggers a penalty, usually measured in months of interest, though you keep your original deposit.
  • The longer the term, the higher the rate typically is, because the bank has your money for longer.
  • Interest compounds on a schedule set by the bank—daily, monthly, or quarterly—and you can choose to take it as cash or roll it back into the CD.
  • FDIC or NCUA insurance protects your deposit up to $250,000 even if the bank or credit union fails.

How the interest rate and term length connect

Banks offer higher rates on longer terms because they want to keep your money longer. 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%. The exact rates change daily based on what the Federal Reserve is doing and what other banks are offering, so there is no single "right" rate—you shop around.

The term you choose should match when you actually need the money. If you know you'll need cash in two years, a five-year CD is a poor choice because you'll either break it early and lose interest to the penalty, or you'll be stuck waiting. Pick a term that lets your money sit undisturbed until maturity—the date the CD ends and your money becomes available again.

What happens when your CD reaches maturity

On the maturity date, your CD stops earning interest. At that point you have a few options. You can withdraw the money in full. You can roll it into a new CD at whatever rate the bank is currently offering—this happens automatically at some banks unless you tell them otherwise, so read the fine print. Or you can move it to a savings account or another product.

If you do nothing and the bank auto-renews your CD, you're locked in again for another term at the new rate. That new rate might be higher or lower than what you were earning. Some banks give you a grace period—usually 7 to 10 days—to change your mind and withdraw without penalty. After that window closes, you're committed again.

How interest compounds and when you receive it

The bank calculates your interest on a schedule: daily, monthly, or quarterly. Daily compounding means the interest earned each day gets added to your balance, and the next day's interest is calculated on that larger amount. This compounds your gains over time, though the effect is most noticeable on longer terms and higher balances.

You don't have to wait until maturity to receive your interest. Many banks let you choose to have interest paid out monthly or quarterly while the CD is still running. If you do, that money goes into a linked account—usually a checking or savings account—and your CD balance stays the same. If you leave the interest in the CD, it compounds and you collect everything at maturity.

Early withdrawal penalties and how they work

The penalty for breaking a CD early is set when you open it and is stated in your account agreement. A common structure is a penalty equal to three to six months of interest. So on a $10,000 CD earning 4.5% annually, six months of interest is about $225. If you withdraw after one month, you lose that $225 but keep your $10,000.

The penalty does not apply to your principal—you always get your original deposit back. But it does reduce the interest you earn, sometimes to zero if you withdraw very early. Some banks offer "no-penalty CDs" that let you withdraw early without losing interest, though these typically pay lower rates than standard CDs. The trade-off is flexibility versus yield.

Different CD types and when to use them

A traditional CD is what most people open: fixed rate, fixed term, penalty for early withdrawal. A no-penalty CD lets you withdraw without losing interest, but the rate is lower. A bump-up CD lets you request a rate increase once if rates rise during your term—useful if you think rates are heading higher. An add-on CD lets you deposit more money during the term, which can help if you're saving gradually.

A jumbo CD requires a larger minimum deposit—often $100,000 or more—and usually pays a slightly higher rate. A brokered CD is sold through an investment firm rather than directly by a bank, and can sometimes offer rates or terms you won't find at your local branch. Each type serves a different situation, so think about what matters most: the highest rate, the most flexibility, or the ability to add money over time.

Comparing CD rates and where to find them

CD rates vary by bank, by term length, and by the size of your deposit. A large national bank might offer 4.0% on a one-year CD, while an online bank might offer 4.8% for the same term. The difference adds up: on a $25,000 deposit, that 0.8% gap means $200 more in interest over the year.

You can compare rates on financial websites that track CD offerings, or by visiting bank websites directly. Look at the annual percentage yield (APY), not just the interest rate, because APY includes the effect of compounding. Also check the minimum deposit required and the early withdrawal penalty. Some banks waive the penalty for certain circumstances like death or disability, so read the terms.

Frequently Asked Questions

Can I withdraw money from a CD before it matures?

Yes, but you'll pay a penalty set by the bank when you opened the CD. The penalty is usually a few months of interest. You keep your original deposit, but the interest you lose may mean you earn less than you would have in a regular savings account. Some banks offer no-penalty CDs that let you withdraw without losing interest, though at a lower rate.

What's the difference between a CD and a savings account?

A savings account has no term—you can withdraw anytime without penalty—but pays a lower interest rate. A CD locks your money for a set period and pays more interest, but charges a penalty if you withdraw early. Choose a CD if you have money you won't need for months or years. Choose a savings account if you need access to the money sooner.

Is my money safe in a CD?

Yes, up to $250,000 per account at an FDIC-insured bank or NCUA-insured credit union. This protection applies even if the institution fails. If you have more than $250,000, you can open CDs at multiple banks to keep each one under the limit and maintain full coverage.

What happens if I need my money before the CD matures?

Contact your bank and request an early withdrawal. They'll calculate the penalty—usually a set number of months of interest—subtract it from your earnings, and send you the remainder along with your principal. The penalty amount is in your account agreement, so you can calculate it yourself before you call.

Do I have to pay taxes on CD interest?

Yes, CD interest is taxable income in the year it's earned, even if you don't withdraw it. The bank will send you a 1099-INT form at tax time showing how much interest you earned. If the interest is paid out during the year, you'll owe taxes on it that year. If it compounds and you collect it at maturity, you owe taxes when you receive it.