The core features of a CD

A certificate of deposit is a savings account where you agree to leave money untouched for a set period in exchange for a fixed interest rate. That fixed rate is the defining feature — it does not change, no matter what happens to market rates or your bank's other rates. You know exactly how much you will earn before you deposit a dollar.

The other defining feature is the maturity date. This is the day your CD term ends and the bank returns your principal plus all earned interest. Until that date arrives, your money is locked in. You can withdraw it early, but nearly every CD charges a penalty for doing so — usually a certain number of months' worth of interest, though the exact amount varies by bank and by term length.

The combination of a locked-in rate and a locked-in timeline is what makes a CD different from a regular savings account, where rates can drop at any time and you can withdraw whenever you want.

Key Takeaways

  • A CD locks in an interest rate for a specific term — typically three months to five years — and that rate stays the same for the entire period.
  • Your money is not accessible without penalty until the maturity date, though some banks offer no-penalty CDs that charge a smaller withdrawal fee instead.
  • When your CD matures, the bank pays you the principal plus all interest earned, and you can then withdraw it, move it to another CD, or leave it in a regular savings account.
  • FDIC insurance protects CD deposits up to $250,000 per depositor per bank, the same as regular savings accounts.
  • Interest rates on CDs are higher than savings account rates because you are giving up access to your money for a defined period.

How the interest rate works

The rate you receive is set when you open the CD and does not move for the entire term. If you open a one-year CD at 4.5 percent, you will earn 4.5 percent whether rates climb to 6 percent next month or fall to 2 percent. This is the trade-off: you get certainty, but you also miss out if rates rise.

Interest on a CD is usually compounded daily or monthly, meaning the bank calculates interest on your principal plus any interest already earned. The more frequently it compounds, the slightly more you earn, though the difference is usually small. Your bank will tell you the compounding frequency when you open the account.

Some banks advertise an APY (annual percentage yield) rather than just a rate. The APY includes the effect of compounding, so it is the true amount you will earn in a year. If a bank shows you both a rate and an APY, the APY is the number that matters for comparison.

The maturity date and what happens after

Your CD has a specific end date — say, March 15, 2026. On that date, the bank deposits your principal plus all interest into your account. You now have access to the full amount with no penalty. Most banks give you a window of about seven to ten days after maturity to decide what to do next.

If you do nothing during that window, many banks automatically roll the CD into a new CD with the same term at whatever the current rate is. This can work in your favor if rates have risen, but it locks you in again at a potentially lower rate if rates have fallen. Read your CD agreement to see what your bank does, and set a reminder for a few days before maturity so you can make an active choice.

You can also withdraw the money entirely, move it to a different bank's CD, or deposit it into a regular savings account. There is no penalty for any of these moves once the maturity date has passed.

Early withdrawal penalties

If you need your money before the maturity date, you can withdraw it, but the bank will charge a penalty. The penalty is usually expressed as a number of months of interest — for example, three months' interest or six months' interest. On a $10,000 CD earning 4 percent annually, three months of interest is about $100, so that would be your penalty.

Some banks offer no-penalty CDs, which let you withdraw without the standard early withdrawal fee. Instead, they charge a smaller penalty or no penalty at all. The trade-off is that no-penalty CDs usually pay a lower interest rate than standard CDs, so you earn less if you keep your money in for the full term.

Before you open any CD, look up the early withdrawal penalty in the bank's disclosure document. It is usually listed as "early withdrawal penalty" or "CD terms." Knowing the penalty ahead of time helps you decide whether the rate is worth the risk of being locked in.

FDIC insurance protection

CDs are insured by the FDIC (Federal Deposit Insurance Corporation) up to $250,000 per depositor per bank. This means if your bank fails, the FDIC will return your principal and all earned interest up to that limit. The insurance covers the full amount you have in the CD, including interest that has accrued but not yet been paid out.

If you have more than $250,000 to deposit, you can open CDs at different banks to keep each one under the insurance limit. You can also open CDs in different ownership categories at the same bank — for example, one in your name alone and one in a joint account with your spouse — and each would be insured separately up to $250,000.

Term length options

Banks offer CDs with terms ranging from a few months to several years. Common terms are three months, six months, one year, two years, three years, and five years. Some banks also offer longer terms like seven or ten years, and some offer very short terms like 30 days.

Longer-term CDs usually pay higher rates because you are locking in your money for a longer period and the bank has more certainty about how long it can use your funds. A five-year CD might pay 4.5 percent while a one-year CD pays 3.8 percent. However, if you think rates might rise soon, a shorter term lets you reinvest at a higher rate sooner.

Minimum deposit requirements

Most banks require a minimum deposit to open a CD, though the amount varies. Some banks have no minimum, while others require $500, $1,000, or more. Online banks tend to have lower minimums than brick-and-mortar banks. Check the bank's website or call to confirm the minimum before you try to open an account.

The minimum applies only at the time you open the CD. Once the account is open, you cannot add more money to it — a CD is a fixed deposit for a fixed amount. If you want to deposit additional funds, you would need to open a separate CD.

Frequently Asked Questions

Can I withdraw money from my CD before it matures?

Yes, but you will pay an early withdrawal penalty. The penalty is usually a set number of months of interest. Some banks offer no-penalty CDs with lower rates and smaller or no withdrawal fees. Check your CD agreement to see the exact penalty amount before you open the account.

What happens to my CD when it reaches maturity?

The bank deposits your principal plus all earned interest into your account. Most banks then automatically roll the money into a new CD with the same term at the current rate. You have a window of about seven to ten days to stop this and withdraw the money or move it elsewhere instead.

Is my money safe in a CD?

Yes, CDs are FDIC-insured up to $250,000 per depositor per bank. If your bank fails, the FDIC returns your full deposit plus all accrued interest up to that limit. This protection is the same as for regular savings accounts.

Why would I choose a CD over a regular savings account?

CDs pay higher interest rates because you agree to lock your money in for a set period. If you have money you do not need to access for several months or years, a CD will earn you more. If you need flexibility, a savings account is better even though the rate is lower.

Can I open multiple CDs at the same bank?

Yes. You can open as many CDs as you want at the same bank, each with a different term or maturity date if you choose. Each CD is insured separately up to $250,000, so if you have more than that amount, spreading it across multiple banks keeps all of it protected.