A certificate of deposit is money you agree to leave in a bank for a set time in exchange for a higher interest rate

A certificate of deposit, or CD, is a savings product where you deposit a lump sum of money and promise not to touch it until a specific date. In return, the bank pays you a fixed interest rate — usually higher than what you'd earn in a regular savings account. When your CD reaches its maturity date (the end of the agreed-upon period), you get your original money back plus the interest the bank paid you.

The trade-off is simple: you give up access to your money for a defined period — anywhere from a few months to several years — and the bank rewards you with better interest. If you need the money before the maturity date, you'll pay a penalty, which is usually a certain number of months' worth of interest. That penalty exists because the bank has already committed your money to lending or investing, and pulling it out early disrupts their plans.

CDs are one of the safest places to put money because they're insured by the Federal Deposit Insurance Corporation (FDIC) up to $250,000 per depositor, per bank. That means even if the bank fails, your money is protected.

Key Takeaways

  • You deposit a fixed amount of money and agree not to withdraw it until a specific maturity date in exchange for a may provide interest rate.
  • The longer you lock your money away, the higher the interest rate the bank typically offers you.
  • Withdrawing money before the maturity date triggers an early withdrawal penalty, usually calculated as a number of months of interest.
  • CDs are FDIC-insured up to $250,000, making them one of the safest places to store money in a bank.
  • Your interest rate is fixed when you open the CD, so you know exactly how much you'll earn regardless of what happens to market rates.

How the interest rate and term length work together

When you open a CD, the bank tells you two things: the interest rate and the term. The term is how long you agree to leave your money there — three months, one year, five years, or whatever the bank offers. The interest rate is what percentage of your deposit the bank will pay you each year.

Banks almost always offer higher rates for longer terms. A one-year CD might pay 4.5% annual interest, while a five-year CD at the same bank might pay 5.2%. The bank does this because locking your money away for five years is more valuable to them than locking it away for one year. They can plan further ahead and lend that money out with more certainty.

The interest rate on a CD is fixed, which means it doesn't change. If you open a two-year CD at 4.75%, you'll earn 4.75% every year for those two years, even if the bank's rates drop to 3% next month. That certainty is part of what makes CDs appealing — you know exactly what you'll have when the CD matures.

What happens when your CD reaches maturity

On your maturity date, the CD stops earning interest and your bank will contact you with options. Most banks give you a grace period — usually 7 to 10 days — during which you can decide what to do without penalty. You can withdraw the money, move it to a regular savings account, or open a new CD.

If you don't take action during the grace period, many banks will automatically renew your CD into a new one with the same term at whatever the current interest rate is. That new rate might be higher or lower than what you were earning. Some banks will move the money to a savings account instead. Check your CD paperwork or call your bank to find out what their automatic renewal policy is, because it varies.

When you withdraw the money — whether at maturity or early — the bank will report the interest you earned to the IRS on a Form 1099-INT. You'll owe federal income tax on that interest, and possibly state income tax depending on where you live.

Early withdrawal penalties and when they apply

If you need your money before the maturity date, you can withdraw it, but you'll pay a penalty. The penalty is usually expressed as a number of months of interest — for example, "three months of interest" or "six months of interest." If your CD earns $500 in interest over the year and the penalty is three months of interest, you'd lose $125 (three months' worth) when you withdraw early.

Some banks calculate the penalty differently — as a percentage of your deposit or as a flat fee — so read your CD agreement to understand exactly what you'd owe. The penalty reduces the amount you receive, but you always get your original deposit back. You're only penalized on the interest, not on your principal.

A few banks offer "no-penalty CDs" that let you withdraw your money early without losing interest. These CDs pay lower interest rates than standard CDs because the bank is taking on more risk. They're useful if you think you might need the money but want a rate better than a savings account.

Different CD types and how they differ

Most banks offer a basic CD — you deposit money, it earns a fixed rate, and you get it back at maturity. But some banks offer variations. A bump-up CD lets you request a rate increase once during the term if rates go up. A step-up CD automatically increases your rate at set intervals. These options pay slightly lower rates than standard CDs because you're getting flexibility.

A liquid CD or no-penalty CD lets you withdraw some or all of your money without a penalty, though usually at a lower interest rate. A jumbo CD requires a larger minimum deposit — often $100,000 or more — and typically pays a higher rate because you're committing more money.

Some banks also offer promotional CDs with higher rates for a limited time, usually when they're trying to attract new customers or raise deposits quickly. These rates are real, but they're temporary — the bank will return to standard rates once the promotion ends.

Why someone would choose a CD over a savings account

A regular savings account is liquid — you can withdraw money whenever you want without penalty. A CD locks your money away but pays more interest. The choice depends on whether you have money you won't need for a while.

If you have an emergency fund, it should stay in a savings account where you can access it quickly. But if you have money set aside for a goal that's two or three years away — a down payment on a house, a car purchase, a wedding — a CD lets that money earn more while you wait. You're not touching it anyway, so the lack of access doesn't hurt you, and you get paid more for that commitment.

CDs are also useful if you're worried about spending money you've saved. The penalty for early withdrawal acts as a psychological barrier. Knowing you'll lose interest if you tap the CD makes it easier to leave the money alone.

How to compare CDs from different banks

When you're shopping for a CD, you need to compare three things: the interest rate, the term, and the early withdrawal penalty. A bank offering 5.0% for one year is only better than another bank's 4.8% if the penalty terms are similar. If one bank charges a six-month penalty and another charges a one-month penalty, the lower rate might actually be the better deal for you.

Also check the minimum deposit required. Some banks require $500 to open a CD, others require $1,000 or $10,000. If you don't have the minimum, you can't open the CD at that bank, no matter how good the rate is.

Online banks often pay higher CD rates than brick-and-mortar banks because they have lower overhead costs. If you're comfortable banking online and don't need to visit a physical branch, online CDs are worth comparing. All CDs at FDIC-insured banks are equally protected, so the safety is the same.

Frequently Asked Questions

Can I add more money to my CD after I open it?

No. When you open a CD, you deposit a set amount and that's what earns interest for the term. You can't add to it later. If you want to deposit more money, you'd need to open a separate CD or put it in a savings account.

What if I need my money before the maturity date?

You can withdraw it, but you'll pay an early withdrawal penalty. The penalty is usually several months of interest. Some banks offer no-penalty CDs that let you withdraw without losing interest, though they pay lower rates. Check your CD agreement to see what your specific penalty is.

Is the interest rate on a CD may provide?

Yes. The rate you see when you open the CD is locked in for the entire term. It won't change even if the bank raises or lowers its rates. That's why longer-term CDs pay higher rates — the bank is committing to that rate for years.

Do I have to pay taxes on CD interest?

Yes. The interest you earn on a CD is taxable income. Your bank will send you a Form 1099-INT showing how much interest you earned, and you'll report that on your tax return. You owe federal income tax on it, and possibly state income tax depending on your location.

What happens if the bank fails?

Your CD is protected by FDIC insurance up to $250,000. If the bank fails, the FDIC will pay you your deposit plus any interest you've earned up to that point. You won't lose money.