A certificate of deposit is a savings account where you lock up money for a set time in exchange for a may provide interest rate

A certificate of deposit (CD) is a product offered by banks and credit unions. You give them a lump sum of money, agree not to touch it 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 locked in from day one and does not change, even if the bank's rates drop.

The trade-off is simple: you get a higher interest rate than a regular savings account, but you cannot withdraw the money without a penalty. If you pull money out before the term ends, the bank charges a fee that eats into your earnings. The longer you commit to leaving the money alone, the higher the rate typically is.

CDs are insured by the Federal Deposit Insurance Corporation (FDIC) up to $250,000 per account holder per bank, so your principal is protected even if the bank fails. This makes them one of the safest places to keep money, though the trade-off is that the returns are modest compared to stocks or bonds.

Key Takeaways

  • You deposit a fixed amount of money for a set term and receive a may provide interest rate that does not change.
  • Early withdrawal penalties can significantly reduce your earnings, so only use a CD for money you will not need during the term.
  • CD rates are higher than regular savings accounts but lower than stock market returns, making them suitable for conservative savers.
  • Your money is FDIC-insured up to $250,000, so the principal is protected regardless of what happens to the bank.
  • Different terms — three months, one year, five years — offer different rates; longer terms usually pay more.

How the interest rate and term length work together

When you open a CD, you choose both the amount you deposit and how long you want to lock it up. Common terms are three months, six months, one year, two years, and five years. The bank then quotes you an interest rate for that specific term.

Rates vary by bank and change daily based on what the Federal Reserve does with its benchmark interest rate. A bank offering 4.5% on a one-year CD today might offer 4.2% next week. Longer terms almost always pay more than shorter ones — a five-year CD might pay 4.8% while a three-month CD pays 3.9% — because the bank gets to hold your money longer and you give up more flexibility.

The interest compounds, meaning you earn interest on your interest. If you deposit $10,000 in a one-year CD paying 4.5% annually, you will have $10,450 at maturity. Some CDs compound monthly or daily, which means slightly higher returns, though the difference is small on most accounts.

What happens when your CD reaches maturity

When the term ends, your CD reaches maturity. At that point, the bank deposits your original money plus all the interest into your account — usually a linked checking or savings account you specify when you open the CD.

You then have a choice window, typically five to ten days, to decide what to do next. You can withdraw the money, move it to another account, or roll it into a new CD. If you do nothing, many banks automatically renew the CD into a new term at whatever the current rate is. Read the renewal terms when you open the account so you are not surprised by a lower rate.

Some people use CDs as a ladder: they open multiple CDs with different maturity dates so that money becomes available at regular intervals without locking everything up for years. For example, you might open five one-year CDs in consecutive months, so one matures every month and you have regular access to portions of your money.

Early withdrawal penalties and when they apply

If you need the money before the term ends, the bank will let you take it — but they charge a penalty. The penalty is usually stated as a number of months of interest. A CD with a three-month penalty means you lose three months' worth of the interest you would have earned.

On a $10,000 CD paying 4.5% annually with a three-month penalty, withdrawing after six months would cost you roughly $112.50 in lost interest. You would get your $10,000 back plus the six months of interest you earned, minus the penalty. The exact calculation depends on how the bank compounds interest and how they calculate the penalty, so ask before you open the account.

Some banks offer no-penalty CDs that let you withdraw without a fee, but they pay lower interest rates in exchange. These make sense if you think you might need the money but want better returns than a savings account offers.

Where to find CDs and how to compare them

Most banks and credit unions offer CDs. You can open one in person at a branch, online through the bank's website, or sometimes by phone. Online banks often pay higher rates than brick-and-mortar banks because they have lower overhead costs.

To compare CDs, look at the annual percentage yield (APY), not just the interest rate. APY includes the effect of compounding and tells you the true return. A CD advertising 4.5% APY will earn you more than one advertising 4.5% interest compounded annually, though the difference is usually small.

Check the penalty terms before you commit. A CD paying 4.8% with a six-month penalty might be worse than one paying 4.5% with a one-month penalty if you think you might need the money. Also confirm the FDIC insurance limit — if you are depositing more than $250,000, you may need to split it across multiple banks to stay fully insured.

CDs versus savings accounts and money market accounts

A regular savings account offers flexibility — you can withdraw money anytime without penalty — but pays much lower interest, often under 0.5%. A CD locks up your money but pays significantly more, sometimes four to five times higher.

A money market account sits in the middle. It pays more than a savings account but less than a CD, and it lets you write checks or make a limited number of withdrawals per month without penalty. If you need some access to your money but want better returns than a savings account, a money market account might fit better than a CD.

The right choice depends on when you will need the money. If you will not touch it for at least a year, a CD usually wins on rate. If you might need it sooner, a savings account or money market account keeps you from paying a penalty.

How CDs fit into a savings strategy

CDs work best for money you have already decided to save and will not need for a specific period. They are not meant for emergency funds, which should stay in a checking or savings account where you can access them instantly. They are also not meant for money you might need in the next few months.

Many people use CDs for goals with a known timeline: saving for a down payment two years away, setting aside money for a car purchase in 18 months, or building a college fund. Because the rate is locked in, you know exactly how much you will have when the CD matures.

CDs are also useful when interest rates are high. If rates are at 4.8% and you think they might drop, locking in a five-year CD protects you from lower rates later. Conversely, if rates are low and rising, shorter terms let you reinvest at higher rates when the CD matures.

Frequently Asked Questions

Can I withdraw money from a CD before it matures?

Yes, but you will pay an early withdrawal penalty set by the bank. The penalty is usually a certain number of months of interest. Some banks offer no-penalty CDs that let you withdraw without a fee, though they pay lower rates.

What is the difference between APY and interest rate on a CD?

APY (annual percentage yield) includes the effect of compounding and shows your true return over a year. Interest rate is the base rate before compounding. APY is always higher and is the number you should compare when shopping for CDs.

What happens to my CD if the bank fails?

Your money is protected up to $250,000 by FDIC insurance. If the bank fails, the FDIC pays you your principal plus any interest earned up to the insurance limit. This makes CDs one of the safest places to keep money.

Can I open multiple CDs at the same bank?

Yes, but FDIC insurance covers only $250,000 per account holder per bank. If you deposit $500,000 across multiple CDs at one bank, only $250,000 is insured. To insure more, open CDs at different banks.

Should I choose a longer or shorter CD term?

Longer terms pay higher rates, but they lock up your money longer. Choose based on when you will need the money and whether you think interest rates will rise or fall. If rates are high now, longer terms lock in those rates. If you think rates will rise, shorter terms let you reinvest sooner.