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, or CD, is a contract between you and a bank. You give the bank a lump sum of money — say $1,000 or $5,000 — and promise not to touch it for a specific period. That period might be three months, six months, one year, or five years. In return, the bank pays you a fixed interest rate that is almost always higher than what you would earn in a regular savings account.

The bank uses your money during that time and pays you back the full amount plus the interest when the term ends. You cannot withdraw the money early without paying a penalty, which is why the bank can afford to offer you more interest. The tradeoff is straightforward: you get a better rate, but your money is locked up.

CDs are considered very safe because they are backed by the Federal Deposit Insurance Corporation (FDIC) at most banks. This means if the bank fails, the government insures your deposit up to $250,000. That protection makes CDs one of the lowest-risk places to put money.

Key Takeaways

  • A CD requires you to deposit a fixed amount and leave it untouched for a set term, ranging from a few months to several years.
  • In exchange for locking up your money, the bank pays you a higher interest rate than a regular savings account offers.
  • Withdrawing money before the term ends triggers an early withdrawal penalty, which the bank deducts from your interest or principal.
  • CDs are FDIC-insured up to $250,000, making them one of the safest places to store money.
  • The interest rate on a CD is fixed for the entire term, so you know exactly how much you will earn regardless of what happens to market rates.

How the interest rate and term length work together

The longer you agree to lock up your money, the higher the interest rate the bank will offer you. A three-month CD might pay 4.5 percent annual interest, while a five-year CD from the same bank might pay 5.2 percent. The bank is willing to pay more because it gets to use your money for longer.

The interest rate is fixed, meaning it does not change during the term. If you open a one-year CD at 5 percent, you will earn 5 percent for the full year, even if the Federal Reserve raises or lowers rates. This certainty is one reason people choose CDs — you know exactly what you will have at the end.

Interest on a CD is usually compounded and added to your account either monthly or at maturity. Some banks let you choose whether to have the interest paid out to you or reinvested into the CD. If you reinvest, the interest earns interest too, which is called compound interest.

What happens when your CD term ends

When your CD reaches its maturity date, the bank sends you a notice. You then have a window — usually seven to ten days — to decide what to do with the money. You can withdraw it, move it to another account, or roll it over into a new CD.

If you do nothing and the bank's terms allow it, many CDs automatically renew into a new CD at the current interest rate. This can work in your favor if rates have risen, but it can work against you if rates have fallen. Read the renewal terms carefully, because some banks renew at a lower rate without asking you first.

Once your CD matures, you can withdraw the money without penalty. There is no reason to stay in a CD after it matures if you need the cash, and there is no reason to let it auto-renew if you find a better rate elsewhere.

The early withdrawal penalty and when it applies

If you withdraw money from a CD before the term ends, the bank charges an early withdrawal penalty. This penalty is usually a certain number of months of interest. For example, a penalty might be three months of interest, meaning if your CD was earning $50 per month, you would lose $150.

The penalty amount varies by bank and by CD term. A short-term CD like a three-month CD might have a penalty of one month of interest, while a five-year CD might have a penalty of six months or more. The bank discloses this penalty upfront, so you know the cost before you open the account.

Some banks offer no-penalty CDs, which let you withdraw your money early without a penalty. These CDs pay a lower interest rate to make up for the flexibility. They are useful if you think you might need the money but want better returns than a savings account.

CDs versus savings accounts and money market accounts

A regular savings account has no term and no penalty for withdrawal. You can take money out whenever you want. In exchange, the interest rate is much lower — often less than 1 percent. A CD locks up your money but pays significantly more interest, sometimes two to three times higher.

A money market account sits in the middle. It usually pays more interest than a savings account but less than a CD. Money market accounts often come with a debit card or check-writing ability, giving you some access to your money. However, they may have withdrawal limits or require a higher minimum balance.

The choice depends on when you need the money. If you have cash you will not touch for a year or more, a CD is the better choice. If you might need the money sooner, a savings account or money market account is safer because you avoid the early withdrawal penalty.

How to choose a CD term that fits your timeline

Before opening a CD, think about when you will actually need the money. If you are saving for a down payment on a house in two years, a two-year CD makes sense. If you are setting aside an emergency fund, a CD is probably the wrong tool because you might need it sooner.

You can also build a CD ladder by opening multiple CDs with different maturity dates. For example, you might open five one-year CDs, each maturing in a different year. This way, one CD matures every year, giving you access to some money regularly while keeping the rest locked in at higher rates.

Interest rates change over time, and they are higher at some points than others. If rates are unusually high, a longer-term CD locks in that rate for years. If rates are low and you think they will rise, a shorter-term CD lets you reinvest at a better rate sooner.

FDIC insurance and how your money is protected

Most CDs at banks are covered by FDIC insurance up to $250,000 per depositor, per bank. This means if the bank fails, the federal government guarantees you will get your money back, up to that limit. This protection applies to the principal and any accrued interest.

If you have more than $250,000 to invest, you can open CDs at multiple banks to stay within the insurance limit at each one. Some people also open CDs at credit unions, which are covered by a similar program called the National Credit Union Administration (NCUA) insurance, also up to $250,000.

CDs at online banks are just as safe as CDs at brick-and-mortar banks, as long as the bank is FDIC-insured. Online banks often pay higher interest rates because they have lower overhead costs. Always check that the bank displays the FDIC logo or states it is FDIC-insured before opening an account.

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 a set number of months of interest, which varies by bank and CD term. Some banks offer no-penalty CDs that let you withdraw without a fee, though they pay lower interest rates in exchange.

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

A savings account has no term and no withdrawal penalty, but it pays much lower interest. A CD locks your money for a set period and pays higher interest, but you lose money if you withdraw early. Choose a CD if you will not need the money for months or years.

Do I have to pay taxes on CD interest?

Yes, CD interest is taxable income. The bank will send you a 1099-INT form at the end of the year showing how much interest you earned. You report this on your tax return. Some people use CDs in retirement accounts like IRAs to defer taxes on the interest.

What happens if I do nothing when my CD matures?

Most banks automatically renew your CD into a new term at the current interest rate. This renewal rate might be higher or lower than your original rate. You should review the renewal notice and decide whether to accept the new rate, withdraw the money, or move it elsewhere.

Are online bank CDs as safe as CDs at big banks?

Yes, as long as the online bank is FDIC-insured. Online banks often pay higher CD rates than traditional banks because they have lower costs. Always verify the bank is FDIC-insured before opening an account, regardless of whether it is online or in-person.