What a Certificate of Deposit Is and How It Earns Money

A certificate of deposit (CD) is a savings account where you agree to leave a fixed amount of money untouched for a set period of time in exchange for a may provide interest rate. You deposit money, the bank holds it, and at the end of the term — which might be three months, one year, five years, or longer — you get your original deposit back plus the interest earned.

The interest rate is locked in when you open the CD. If rates rise after you buy the CD, your rate stays the same. If rates fall, you keep the higher rate you were promised. This predictability is the main reason people use CDs: you know exactly how much money you will have at maturity.

CDs are insured by the Federal Deposit Insurance Corporation (FDIC) up to $250,000 per depositor, per bank, per account type. That means if the bank fails, your money is protected up to that limit.

Key Takeaways

  • You deposit a lump sum, agree not to touch it for a fixed term, and receive a may provide interest rate that does not change.
  • The longer the term, the higher the interest rate is usually offered, but your money is locked away for that entire period.
  • Withdrawing money before the maturity date triggers an early withdrawal penalty that reduces your earnings or principal.
  • CDs are FDIC-insured up to $250,000, making them one of the safest places to keep savings.
  • The interest you earn is taxed as ordinary income in the year it is credited to your account.

How Interest Rates and Terms Work Together

Banks offer different rates depending on how long you lock your money away. A three-month CD typically pays less than a one-year CD, which pays less than a five-year CD. This is because the bank wants to use your money for longer and is willing to pay more for that privilege.

The actual rate varies by bank and changes based on what the Federal Reserve does with its benchmark interest rate. When the Fed raises rates, new CDs pay more. When the Fed cuts rates, new CDs pay less. But your rate, once set, never changes — even if the Fed moves in the opposite direction the next day.

You choose the term that fits your situation. If you know you will not need the money for five years, a five-year CD locks in the current rate for that entire period. If you might need it sooner, a shorter term gives you more flexibility, though at a lower rate.

What Happens at Maturity

When your CD reaches its maturity date, the bank credits your account with your original deposit plus all the interest earned. At that point, you have several choices: withdraw the money, open a new CD with a different term, or let the CD automatically renew into another term of the same length.

Most banks have an automatic renewal feature. If you do nothing, your CD rolls into a new CD with the same term at whatever rate the bank is currently offering. This can work in your favor if rates have risen, but it locks you in again if rates have fallen. Read your CD agreement to see your bank's renewal policy and the window you have to withdraw without penalty after maturity.

Some banks offer a grace period — usually three to ten days after maturity — during which you can withdraw your money penalty-free without triggering a new CD. If you miss that window and the CD renews, you will owe an early withdrawal penalty if you want your money back before the new term ends.

Early Withdrawal Penalties and When They Apply

If you need your money before the maturity date, the bank will charge an early withdrawal penalty. The penalty amount varies by bank and by CD term. A three-month CD might have a penalty of one month's interest; a five-year CD might have a penalty of six months' interest or more.

The penalty is deducted from your earnings first. If you have earned $500 in interest and the penalty is $300, you receive $200 in interest and your full principal. If the penalty exceeds your interest, it comes out of your principal — you get back less than you deposited.

Some banks offer no-penalty CDs that let you withdraw early without a penalty, but they pay a lower interest rate to compensate. This is a trade-off: lower may provide return in exchange for access to your money if your circumstances change.

How Interest Is Calculated and Taxed

Banks calculate CD interest using either simple interest or compound interest. With simple interest, you earn a percentage of your principal only. With compound interest, you earn interest on your interest as well. Most banks compound interest daily or monthly, which means your balance grows slightly faster.

The interest you earn is taxed as ordinary income in the year it is credited to your account — even if you do not withdraw it. If you earn $200 in CD interest in 2024, you owe income tax on that $200 in 2024, regardless of whether you leave the money in the CD or take it out. The bank will send you a 1099-INT form in January showing how much interest you earned.

This tax treatment matters when you are deciding between a CD and other savings options. A high-yield savings account, for example, also earns taxable interest, but it gives you access to your money without penalty. The trade-off is that savings accounts usually pay less interest than CDs.

Comparing CDs to Other Savings Options

A regular savings account pays interest but offers no rate may provide and usually pays very little. A money market account is similar but may require a higher minimum balance. A high-yield savings account pays more than either, but still less than a CD of comparable length, and the rate can change at any time.

A CD locks in a rate, which is valuable when rates are high. But it also locks up your money, which is a cost if you need it before maturity. If you have money you will not touch for several years and want the highest may provide return, a CD makes sense. If you want flexibility or might need the money sooner, a high-yield savings account is usually the better choice.

Treasury bills and bonds are another option. They are backed by the U.S. government rather than a bank, and they may offer different rates and terms. They are also very safe, but they have their own rules about early withdrawal and are not FDIC-insured (they do not need to be, because they are government-backed).

Strategies for Using Multiple CDs

Some people use a strategy called CD laddering to balance safety with flexibility. Instead of putting all your money into one five-year CD, you buy five one-year CDs. Each year, one CD matures, and you can withdraw the money, spend it, or buy a new CD at whatever rate is current. This gives you regular access to portions of your money while still locking in rates on the rest.

Another approach is to buy CDs with different terms — one three-month, one one-year, one three-year, one five-year. As each matures, you decide whether to renew or use the money. This spreads your maturity dates across time so you are not stuck with everything locked up until one distant date.

These strategies work best when you have a larger amount to invest and are comfortable managing multiple accounts. For smaller amounts or simpler situations, a single CD or a high-yield savings account may be all you need.

Frequently Asked Questions

Can I withdraw money from a CD before it matures?

Yes, but you will owe an early withdrawal penalty that reduces your interest earnings or principal. The penalty amount depends on your bank and the CD term. Some banks offer no-penalty CDs that let you withdraw early without a fee, though they pay lower interest rates.

What happens to my CD when it reaches maturity?

Your principal and interest are credited to your account. Most banks automatically renew your CD into a new term at their current rate unless you withdraw the money or choose a different option. Check your bank's renewal policy and any grace period you have to withdraw penalty-free.

Is a CD a good place to keep an emergency fund?

CDs are safe and insured, but they are not ideal for emergencies because you cannot access the money without a penalty. A high-yield savings account is better for emergency funds because it pays decent interest and lets you withdraw anytime without penalty.

Do I pay taxes on CD interest?

Yes. The interest you earn is taxed as ordinary income in the year it is credited to your account, even if you do not withdraw it. Your bank will send you a 1099-INT form showing the interest earned so you can report it on your tax return.

How do I know which CD term to choose?

Choose based on when you will need the money. If you will not touch it for five years, a five-year CD locks in the current rate for that period. If you might need it sooner, a shorter term gives you more flexibility at a lower rate. Consider your financial goals and how comfortable you are having the money unavailable.