A CD is a savings account where you agree to leave money untouched for a set time in exchange for a higher interest rate

A certificate of deposit (CD) is a contract between you and a bank or credit union. You give them a lump sum of money, they promise to pay you a fixed interest rate, and you agree not to withdraw that money until a specific date arrives. That date is called the maturity date. When it passes, your money is yours to take out — principal plus interest.

The trade-off is simple: you lock up your cash for anywhere from three months to five years (or longer), and in return you get a higher interest rate than a regular savings account offers. The longer you agree to leave the money alone, the higher the rate typically is. If you need the money before the maturity date, you pay a early withdrawal penalty — usually a few months' worth of interest, though the exact amount depends on the CD and the bank.

CDs are FDIC-insured at banks and NCUA-insured at credit unions, meaning your money is protected up to $250,000 per account owner, per institution, even if the bank fails. This makes them one of the safest places to put money that you know you won't need for a while.

Key Takeaways

  • A CD locks your money for a set term (three months to five years or more) in exchange for a may provide interest rate higher than a savings account.
  • You pay an early withdrawal penalty if you take money out before the maturity date, usually equal to a few months of interest.
  • Your money is insured up to $250,000 by the FDIC (at banks) or NCUA (at credit unions), so the principal is protected.
  • The interest rate on a CD is fixed when you open it, so it does not change even if the bank's rates go up or down.
  • CDs work best for money you are certain you will not need during the term, such as a down payment you are saving for a specific year.

How interest rates and terms work together

When you open a CD, the bank tells you two things: the annual percentage yield (APY) and the term length. The APY is the interest rate you will earn, expressed as a yearly percentage. A one-year CD might offer 4.5% APY, while a five-year CD at the same bank might offer 5.2% APY. The longer you commit, the higher the rate usually goes — but not always, and the difference varies by bank and by market conditions.

The interest compounds, meaning you earn interest on your interest. How often it compounds (daily, monthly, quarterly) affects how much you end up with. A CD that compounds daily will grow slightly faster than one that compounds monthly, all else equal. When the maturity date arrives, the bank deposits your original amount plus all the interest into your account, and you can withdraw it or roll it into a new CD.

Interest rates on CDs change based on what the Federal Reserve does with its benchmark rate. When the Fed raises rates, new CDs offer higher rates. When it lowers rates, new CDs offer lower rates. But your rate is locked in the moment you open the CD, so if rates drop after you buy one, you keep your higher rate. If rates rise, you are stuck with your lower rate until maturity.

Early withdrawal penalties and what they cost

If you need your money before the maturity date, the bank will let you take 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 interest penalty means you lose three months' worth of the interest you would have earned. On a $10,000 CD earning 5% APY with a three-month penalty, that costs you roughly $125.

Some banks charge a flat dollar amount instead of months of interest, and a few charge a percentage of the principal. Always read the CD's terms before you open it so you know what the penalty is. If you think there is any chance you will need the money, factor the penalty into your decision. A CD with a lower rate but a smaller penalty might be better than a high-rate CD with a steep penalty if you are uncertain about your timeline.

A few banks offer no-penalty CDs, which let you withdraw your money early without losing interest. The trade-off is that the interest rate is lower than a standard CD. Whether a no-penalty CD makes sense depends on how uncertain you are about needing the money and how much the rate difference is.

When a CD makes sense for your savings

A CD is the right tool when you have a specific amount of money you know you will not need for a defined period. Examples include saving for a car down payment you plan to make in two years, setting aside money for a home renovation you are planning for next spring, or building a sinking fund for a known expense like property taxes or insurance premiums that come due on a schedule.

CDs are also useful if you want to lock in a high rate before rates fall. If the Fed has been raising rates and economic signals suggest it might start cutting them soon, opening a CD at today's rate protects you from lower rates later. You give up the ability to move your money if something better comes along, but you secure the rate you have.

A CD is not the right tool for emergency savings, because you need that money to be accessible without penalty. It is also not ideal for money you might need within the next few months, because the early withdrawal penalty will eat into your gains. And if you have high-interest debt (credit cards, personal loans), paying that down usually makes more financial sense than earning 5% in a CD while paying 18% on debt.

CD ladders and how to use them

A CD ladder is a strategy where you open multiple CDs with different maturity dates, staggered over time. For example, you might open five $2,000 CDs: one that matures in one year, one in two years, one in three years, one in four years, and one in five years. Each year, one CD matures, you collect the interest, and you can decide whether to spend the money, open a new five-year CD, or do something else.

Laddering solves two problems at once. First, it gives you regular access to portions of your money without penalties — one CD matures every year, so you are not completely locked out. Second, it lets you take advantage of higher rates on longer-term CDs while still having liquidity. If rates rise, you can reinvest the maturing CD at the new higher rate. If rates fall, you still have older CDs earning the higher rates they locked in.

Laddering works best when you have a lump sum to invest and you want to balance safety, growth, and access. It requires more attention than a single CD, but not much — you just need to decide what to do with each CD when it matures.

CDs versus savings accounts and money market accounts

A regular savings account has no maturity date and no penalty for withdrawal. You can take money out whenever you want. The trade-off is that the interest rate is lower — often 0.01% to 0.5% APY at traditional banks, though online banks sometimes offer 4% to 5%. A savings account is the right choice for emergency funds and money you might need soon.

A money market account sits between a savings account and a CD. It usually offers a higher rate than a savings account (sometimes close to CD rates), but you can withdraw money without penalty. The catch is that you typically get a limited number of withdrawals per month, and the rate can change at any time. Money market accounts work for money you want to keep accessible but also want to earn decent interest on.

CDs offer the highest may provide rate of the three, but only if you can commit to leaving the money alone. If you are not sure you can, a money market account or high-yield savings account is safer. The rate difference is often small enough that the flexibility is worth it.

Where to open a CD and what to compare

You can open a CD at any bank or credit union. Online banks typically offer higher rates than brick-and-mortar banks because they have lower overhead costs. Credit unions often offer competitive rates to their members. Before you open a CD, compare the APY across several institutions — the difference between a 4.5% CD and a 5.2% CD is real money over time.

Also check the early withdrawal penalty, the minimum deposit required, and how often interest compounds. Some banks require $500 minimums, others $25,000. Some compound daily, others quarterly. Read the disclosure document the bank provides — it will spell out all the terms. If anything is unclear, call and ask before you commit.

Make sure the bank or credit union is FDIC or NCUA insured. You can check this on the FDIC website (fdic.gov) or NCUA website (ncua.gov) by entering the institution's name. If it is not insured, your money is at risk if the institution fails.

Frequently Asked Questions

Can I move money from a CD to another bank before it matures?

You can withdraw the money, but you will pay the early withdrawal penalty. You cannot transfer a CD itself to another bank — you have to close it, take the penalty, and then open a new CD elsewhere. Some banks will waive the penalty if you ask, especially if you have been a long-time customer, but they are not required to.

What happens when my CD matures?

The bank will notify you before the maturity date (usually 10 to 30 days before). When the date arrives, your principal plus interest is deposited into your account. You then have a grace period (usually 7 to 10 days) to decide whether to withdraw the money, open a new CD, or let it roll into a new CD automatically. Check your CD's terms to see what the default is.

Is the interest I earn on a CD taxable?

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

Can I open multiple CDs at the same bank?

Yes. Each CD is insured separately up to $250,000, so you can open as many as you want as long as the total at that bank does not exceed the insurance limit. This is how CD ladders work — you open several CDs with different terms at the same institution.

What if interest rates drop after I open a CD?

Your rate stays the same until maturity. You keep earning the rate you locked in when you opened it. This is one of the benefits of a CD — your rate is may provide and does not change, even if the bank's rates fall.