A CD is money you agree to leave in the bank for a set time in exchange for a higher interest rate

A certificate of deposit, or CD, is a savings product where you give the bank a lump sum of money and promise not to touch it for a specific period — usually three months to 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. When the time period ends, you get your original money back plus the interest the bank paid you.

The trade-off is straightforward: you give up access to your money for a while, and the bank rewards you with better interest. If you need the money before the time is up, you can withdraw it, but you will pay a penalty — usually a few months' worth of the interest you would have earned. This penalty is why CDs work best for money you know you will not need soon.

Key Takeaways

  • A CD locks your money away for a set period in exchange for a higher interest rate than a regular savings account offers.
  • You choose the length of time — typically three months to five years — and the bank tells you the exact interest rate before you open it.
  • If you withdraw your money early, you pay a penalty that usually costs you some or all of the interest you earned.
  • CDs are insured by the FDIC up to $250,000, so your money is protected even if the bank fails.

How the interest rate and time period work together

When you open a CD, the bank sets a fixed interest rate for the entire time period. That rate does not change, even if interest rates in the economy go up or down. A three-month CD might pay 4.5 percent, while a five-year CD at the same bank might pay 5.2 percent. Longer time periods usually come with higher rates because you are giving up access to your money for longer.

The interest is calculated and added to your account either monthly or at the end of the term, depending on the bank. Some banks let you choose to have the interest paid out to you, while others automatically add it to the CD balance. Either way, you know exactly how much you will have when the time period ends — there are no surprises.

What happens when your CD reaches maturity

When the time period ends — called the maturity date — the bank will notify you. You then have a choice: you can withdraw the money, or you can renew the CD, which means opening a new one with a new interest rate. The new rate might be higher or lower than what you just earned, depending on what interest rates are doing in the market.

Most banks have an automatic renewal window, usually a few days after maturity. If you do not tell the bank what you want to do during that window, many will automatically renew your CD at whatever the current rate is. Read the terms carefully so you know your bank's policy and do not miss the important date if you want to withdraw your money instead.

Early withdrawal penalties and when they explore

If you need your money before the maturity date, you can withdraw it, but the bank will charge you a penalty. The penalty amount varies by bank and by the length of the CD. A common penalty for a one-year CD might be three months of interest — meaning if you were earning $100 in interest, you would lose $75 of it. For longer CDs, the penalty is often larger.

The penalty is deducted from your withdrawal, so you get back your original deposit minus the penalty. In some cases, if you withdraw very early, the penalty might be larger than the interest you have earned so far, which means you would get back less than you put in. This is why CDs are best for money you are confident you will not need.

Different types of CDs and what makes them different

Most banks offer standard CDs with fixed rates and set time periods. Some also offer no-penalty CDs, which let you withdraw your money early without paying a penalty — but the interest rate is lower to make up for that flexibility. There are also bump-up CDs, where you can request a rate increase once if interest rates rise, and step-up CDs, where the rate automatically increases at set points during the term.

Some banks offer jumbo CDs, which require a larger deposit — often $100,000 or more — and pay a slightly higher rate. There are also brokered CDs, which are sold through investment firms rather than directly by banks, and sometimes have different terms or features. For most people starting out, a standard CD from your own bank is the simplest choice.

FDIC protection and what it means for your money

Money in a CD is protected by FDIC insurance, which means if the bank fails, the federal government will return your money up to $250,000. This protection covers the deposit itself plus any interest you have earned. If you have multiple CDs at the same bank, each one is insured separately up to $250,000, so you could have $500,000 in CDs at one bank and still be fully protected.

This protection is automatic — you do not have to do anything to get it. It applies whether the CD is in your name alone or held jointly with someone else. This is why CDs are considered very safe places to keep money you want to protect while earning a return.

When a CD makes sense and when it does not

A CD is a good choice if you have money you will not need for several months or years and you want to earn more than a savings account pays. It is also useful if you want to know exactly how much money you will have at a specific future date — the fixed rate and maturity date give you that certainty. Many people use CDs to save for a known expense, like a down payment on a car or a home repair they are planning.

A CD is not a good choice if you might need the money sooner than the maturity date, because the early withdrawal penalty will eat into your earnings. It is also not ideal if you think interest rates are about to rise significantly, because your rate is locked in and you cannot take advantage of higher rates without paying a penalty. In that case, a high-yield savings account gives you more flexibility, even if the rate is slightly lower.

Frequently Asked Questions

Can I open a CD with a small amount of money?

Most banks allow you to open a CD with as little as $500 or $1,000, though some require $2,500 or more. A few online banks have no minimum. Call or check the bank's website to find out what the minimum is before you try to open one.

What happens if I need my money before the CD matures?

You can withdraw it, but you will pay an early withdrawal penalty. The penalty is usually a few months of interest. Some banks offer no-penalty CDs if flexibility is important to you, though they pay a lower rate.

Is the interest I earn on a CD taxable?

Yes, the interest is taxable as 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 the CD is in a retirement account like an IRA, the tax rules are different.

Can I move my CD to a different bank?

You can withdraw your money and open a CD at a different bank, but you will pay the early withdrawal penalty at your current bank. You cannot transfer a CD directly from one bank to another without closing it first.

What if interest rates go up after I open my CD?

Your rate stays the same for the entire term — it will not go up even if rates in the market rise. This is the trade-off for knowing your rate in advance. If rates rise significantly, you can close the CD and open a new one at the higher rate, but you will pay the early withdrawal penalty.