What a Certificate of Deposit Is

A certificate of deposit (CD) is an agreement between you and a bank where you give the bank a sum of money for a fixed period of time, and the bank pays you a set interest rate on that money. You cannot withdraw the funds before the term ends without paying a penalty. The bank uses your money during that time and pays you back the full amount plus interest when the term is up.

The core trade-off is straightforward: you lock away your money for a defined period—anywhere from a few months to five years or longer—and in return the bank guarantees you a higher interest rate than you would get in a regular savings account. The longer the term, the higher the rate is usually offered.

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 offers.
  • You pay a penalty if you withdraw before the term ends; the penalty amount depends on the bank and the term length, and can be substantial.
  • CDs are FDIC-insured up to $250,000 per depositor per bank, so your principal is protected even if the bank fails.
  • Interest rates on CDs vary by bank, term length, and current market conditions, so comparing rates across banks before opening one makes a real difference.
  • When a CD matures, the bank notifies you and you can withdraw the money, open a new CD, or let it roll over into a new term at the current rate.

How the Interest Rate and Term Work Together

The bank sets the interest rate based on how long you agree to lock the money away. A three-month CD might pay 4.5 percent annual percentage yield (APY), while a two-year CD from the same bank might pay 4.8 percent. The bank is willing to pay more because it knows it will have your money for longer and can lend it out or invest it with more certainty.

The interest accrues during the term—meaning it builds up—and is added to your principal when the CD matures. If you deposit $5,000 in a one-year CD at 4.8 percent APY, you will have approximately $5,240 at the end of the year (the exact amount depends on how the bank compounds interest, usually daily or monthly). That $240 is your earnings.

The rate is locked in when you open the CD. If interest rates rise after you buy the CD, your rate does not change. If rates fall, you benefit from having locked in the higher rate.

Early Withdrawal Penalties and When They explore

If you need the money before the term ends, the bank will let you withdraw it, but you will lose some of the interest you earned—and possibly some of your principal. The penalty varies by bank and by the CD's term length. A bank might charge three months of interest on a six-month CD, or six months of interest on a two-year CD.

The penalty is calculated and subtracted from your withdrawal. If you withdraw $5,000 from a one-year CD early and the penalty is $60, you receive $4,940. Some banks publish their penalty terms upfront; others require you to ask. Before opening a CD, read the disclosure document or call the bank and ask what the early withdrawal penalty is.

A few banks offer "no-penalty" CDs with slightly lower rates, which let you withdraw without penalty during a specific window near the end of the term. These are useful if you think you might need the money but want a higher rate than a savings account offers.

FDIC Insurance and How Your Money Is Protected

CDs held at FDIC-insured banks are covered by deposit insurance up to $250,000 per depositor per bank. This means if the bank fails, the FDIC will return your money and accrued interest up to that limit. The protection covers the principal plus any interest earned up to the maturity date.

If you have $250,000 in a CD at one bank and $250,000 at another bank, both are fully protected because the insurance limit applies per bank, not per person. If you deposit $300,000 in a single CD at one bank, only $250,000 is insured; the remaining $50,000 is not protected if the bank fails.

You can verify that a bank is FDIC-insured by searching the FDIC's BankFind tool on its website. Credit unions offer similar protection through the National Credit Union Administration (NCUA) up to the same $250,000 limit.

Comparing CD Rates Across Banks

Interest rates on CDs vary significantly between banks and change as market conditions shift. On any given day, one bank might offer 4.5 percent on a one-year CD while another offers 5.1 percent for the same term. Over a year, that difference adds up: on a $10,000 CD, the higher rate earns $510 versus $450—a difference of $60.

Large national banks often offer lower rates than online banks or credit unions because they have more overhead and less need to attract deposits. Online banks typically offer the highest rates because they have lower costs and compete primarily on rate. Credit unions sometimes offer competitive rates to their members.

Before opening a CD, check rates at several banks. Websites that aggregate CD rates can show you current offerings, but the rates change frequently, so verify the current rate directly with the bank before committing. The rate you see online may not be the rate you receive if you wait a week to open the account.

What Happens When a CD Matures

When the term ends, the bank sends you a notice—usually 10 to 14 days before maturity—telling you the CD is about to mature and asking what you want to do. You have three main options: withdraw the money, open a new CD at the current rate, or let the CD roll over automatically into a new term.

If you do nothing, most banks automatically renew the CD into a new term at the current rate. This renewal rate may be higher or lower than what you earned before. If rates have fallen significantly, you might want to withdraw the money and move it to a higher-yielding account elsewhere, or shop for a better rate at another bank.

The maturity notice gives you a window—usually 7 to 10 days—to make changes without penalty. If you withdraw after that window closes, you may owe an early withdrawal penalty. Read the maturity notice carefully and act before the important date if you want to do something other than renew.

CDs Versus Other Savings Options

A regular savings account offers flexibility: you can withdraw money anytime without penalty, but the interest rate is usually much lower than a CD rate. A money market account sits between the two: it pays more than a savings account but less than a CD, and it may have limited withdrawal rights.

A CD makes sense if you have money you will not need for a specific period and want to lock in a higher rate. It does not make sense if you might need the money sooner, because the penalty can erase months of interest earnings. If you are saving for something you might need in six months, a high-yield savings account is safer than a CD with a penalty.

Treasury bills and bonds are another option for longer-term money. They are backed by the U.S. government rather than a bank, and rates vary based on market conditions. CDs offer simplicity and a may provide rate; Treasuries offer government backing but require you to understand how they are bought and sold.

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 several months of interest. Some banks offer no-penalty CDs that let you withdraw during a specific window near maturity without cost, though the rate is lower than a standard CD.

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

APY (annual percentage yield) includes the effect of compounding—the interest earned on your interest. The stated interest rate does not. Banks must disclose APY so you can compare fairly across products. For a CD, the APY is what you actually earn over a year.

Is my money safe in a CD if the bank fails?

Yes, up to $250,000 per depositor per bank. The FDIC insures CDs at member banks, so even if the bank goes under, you get your principal and accrued interest back. Verify the bank is FDIC-insured before opening a CD.

What happens if I need the money right when the CD matures?

The bank gives you a window—usually 7 to 10 days after maturity—to withdraw without penalty. If you miss that window and the CD renews automatically, you will owe an early withdrawal penalty if you withdraw during the new term.

Should I buy a CD if interest rates are expected to rise?

If you believe rates will rise significantly, a short-term CD (three or six months) locks in your current rate for a shorter period, so you can reinvest at a higher rate sooner. A long-term CD locks you in at a lower rate for years. There is no way to know what rates will do, so consider your own need for the money first.