What a Certificate of Deposit Is

A certificate of deposit (CD) is a savings product where you give a bank or credit union a lump sum of money for a set period of time, and they pay you a fixed interest rate in return. You agree not to touch that money until the term ends — typically anywhere from three months to five years. In exchange for locking up your cash, the bank gives you a higher interest rate than you would get in a regular savings account.

The trade-off is straightforward: more interest, but less flexibility. If you need the money before the term is up, you will pay a penalty — usually a few months' worth of interest. The bank knows exactly when you will withdraw, so it can lend that money out with confidence, and it passes some of that benefit back to you as a higher rate.

Key Takeaways

  • You deposit a fixed amount of money for a fixed time period and receive a fixed interest rate that does not change.
  • The interest rate on a CD is almost always higher than a regular savings account because you cannot withdraw early without a penalty.
  • Early withdrawal penalties vary by bank and by term length, but typically cost you several months of interest.
  • Your money is insured by the FDIC (at banks) or NCUA (at credit unions) up to $250,000 per account.
  • When your CD matures, the bank will either return your principal plus interest or automatically roll it into a new CD at the current rate.

How Interest Accrues and Compounds

The interest rate on your CD is locked in on the day you open it and does not change for the entire term, even if the bank's rates go up or down. This is one of the main reasons people choose CDs — you know exactly what you will earn.

Interest can be compounded in different ways depending on the bank. Compounding means the bank adds earned interest back into your account, and then you earn interest on that interest. A CD might compound daily, monthly, or quarterly. The more often it compounds, the slightly more you earn, though the difference is usually small. When your CD matures, you receive your original deposit plus all the interest that has accumulated.

Early Withdrawal Penalties and When They explore

If you withdraw money from your CD before the maturity date, you will owe an early withdrawal penalty. The penalty amount varies by bank and by how long your term is. A three-month CD might have a penalty of one month's interest, while a five-year CD might have a penalty of six months' interest. Some banks charge a flat dollar amount instead.

The penalty comes out of your interest earnings first. If you have earned less interest than the penalty costs, the bank will take the difference from your principal. For example, if you withdraw after two months from a one-year CD with a six-month penalty, you might get back your original deposit minus four months of interest that you never earned.

A few banks offer "no-penalty" CDs with slightly lower rates, where you can withdraw your money early without a penalty. These are worth considering if you are not certain you can leave the money untouched for the full term.

What Happens When Your CD Matures

When your CD term ends, the bank will notify you that it has matured. You then have a window of time — usually five to ten days — to decide what to do with your money. Most banks will automatically roll your CD into a new one at the current rate if you do not take action, though you can also withdraw the funds or move them elsewhere.

Pay attention to maturity notices, because automatic renewal happens at whatever rate the bank is offering at that moment. If rates have dropped, your new CD will earn less. If rates have risen, you will earn more. Some people set a calendar reminder a week before maturity so they can shop around and move their money to a bank offering a better rate.

FDIC Insurance and Safety

Money in a CD at a bank is insured by the FDIC (Federal Deposit Insurance Corporation) up to $250,000 per depositor, per bank. This means if the bank fails, your CD is protected. At credit unions, the same protection comes from the NCUA (National Credit Union Administration), also up to $250,000.

If you have more than $250,000 to deposit, you can open CDs at multiple banks to keep each one under the insurance limit. The FDIC counts each bank separately, so $250,000 at Bank A and $250,000 at Bank B are both fully protected. You can also open a CD in your name alone and another in joint names at the same bank, and both are insured separately.

CD Ladders and How to Use Them

A CD ladder is a strategy where you open multiple CDs with different maturity dates so that one matures every few months or every year. For example, you might open five one-year CDs, each with a different start date, so one comes due every few months. This way you get some of the higher interest rate that longer terms offer, but you also have regular access to portions of your money without paying a penalty.

CD ladders are useful if you want to keep some flexibility while still earning more than a savings account would pay. As each CD matures, you can decide whether to spend the money, move it to a different bank for a better rate, or open a new CD at the top of the ladder to replace the one that just matured.

Comparing CDs Across Banks

Interest rates on CDs vary significantly between banks, and online banks typically offer higher rates than brick-and-mortar branches. A one-year CD at one bank might pay 4.5 percent while another pays 5.2 percent — that difference adds up over time. Before you open a CD, check rates at several banks, including online options.

Also compare the early withdrawal penalty structure, because some banks are more lenient than others. A bank with a slightly lower rate but a smaller penalty might be better if you think there is any chance you will need the money early. Read the CD terms carefully, because they spell out exactly when interest is credited, how compounding works, and what happens at maturity.

Frequently Asked Questions

Can I withdraw money from a CD before it matures?

Yes, but you will pay an early withdrawal penalty. The penalty is usually several months of interest, though it varies by bank and term length. Some banks offer no-penalty CDs where you can withdraw without a fee, though the interest rate is typically lower.

What is the difference between a CD and a savings account?

A CD pays a higher interest rate because you agree to leave your money untouched for a set time. A savings account lets you withdraw whenever you want, but the interest rate is much lower. CDs are better if you have money you will not need for several months or years.

What happens if the bank fails while I have a CD?

Your CD is insured by the FDIC (at banks) or NCUA (at credit unions) up to $250,000. If the bank fails, you will receive your principal plus all earned interest, up to that limit. The insurance is automatic — you do not need to do anything.

Do I have to pay taxes on CD interest?

Yes. CD interest is taxable income in the year it is earned, even if you do not withdraw it. The bank will send you a 1099-INT form at tax time showing how much interest you earned. If you earned more than $10 in interest, the bank is required to report it.

Can I move my CD to a different bank before it matures?

You can withdraw your money and move it, but you will pay the early withdrawal penalty. Some banks will waive the penalty if you transfer the CD itself (rather than withdrawing and redepositing), though this is rare. It is usually worth checking whether the new bank's rate is high enough to offset the penalty cost.