How Do CDs Work? Learn About Rates and Terms

A certificate of deposit (CD) is one of the simplest ways to grow your savings without any guesswork. You put money in, agree to leave it alone for a set period and earn a fixed interest rate in return. When the term ends, you get your original deposit back plus the interest it earned. Because the rate is locked in, you know exactly how much you will walk away with from day one. That predictability is a big part of the appeal, especially if you want a low-risk place to park cash you will not need for a while.

Key Takeaways

• A CD locks your money away for a set term in exchange for a fixed interest rate, so your return will not change even if the market does.

• Most CDs charge an early withdrawal penalty if you take your money out before the term ends, so only deposit cash you can leave untouched.

• Shopping around matters. The best CD rates are well above the FDIC national average, so comparing offers can more than double your yield.

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What Is a CD and How Does It Work?

A CD is a savings product offered by banks and credit unions. In exchange for leaving your money in place for a fixed term, the bank pays you a set interest rate, usually higher than a regular savings account. Terms commonly range from three months to five years.

Here is the basic process:

• Choose your term: Pick how long you want to lock up your money, such as six months or five years.

• Make your deposit: Add your funds, keeping in mind some CDs have a minimum deposit.

• Earn interest: Your money grows at a fixed annual percentage yield (APY) for the full term.

• Collect at maturity: When the term ends, you get your deposit back plus the interest it earned.

The date your CD term ends is called the maturity date. At that point you can withdraw your money, move it elsewhere or roll it into a new CD.

👉 How To Open a Certificate of Deposit

How CD Rates Work

CD rates are set by each bank based on market conditions, competition and the length of the term. CD rates are shown as an APY, which includes the effect of compounding over a full year. Comparing the APY across offers is the easiest way to see which CD actually pays more.

Rates tend to move in step with the Federal Reserve. When the Fed raises its benchmark rate, CD rates usually climb. When the Fed cuts, rates typically fall. The Federal Reserve held its benchmark at 3.50% to 3.75% through the first half of 2026 after cutting three times in late 2025, keeping CD rates fairly stable.

There is a wide gap between average rates and the best ones. The FDIC national average for a one-year CD sat at just 1.65% in mid-2026, while the top nationally available CDs paid around 4% APY. That spread is why shopping around pays off.

Understanding CD Terms

The term is how long you agree to leave your money in the CD. It is one of the most important choices you will make, because it affects both your rate and when you can access your cash. Common terms include:

• Short-term CDs: Three months to one year, good for goals that are close or if you want flexibility.

• Mid-term CDs: Two to three years, a middle ground between rate and access.

• Long-term CDs: Four to five years, often used to lock in a rate for the long haul.

A CD works best for money you will not need until it matures. If you think you might need the cash sooner, a shorter term or a more flexible account may be a better fit.

What Happens if You Withdraw Early?

Most CDs charge an early withdrawal penalty if you take your money out before the maturity date. The penalty is usually a set number of months of interest, which can eat into your earnings or even part of your deposit. Because of this, it is smart to only deposit money you are confident you can leave alone for the full term.

Some banks offer no-penalty CDs, which let you withdraw early without a fee. These usually come with a lower rate in exchange for the added flexibility.

Are CDs Safe?

CDs are considered one of the safest ways to save. When held at an FDIC-insured bank or an NCUA-insured credit union, your deposits are protected up to $250,000 per depositor, per bank, for each account ownership category. That means even if the bank fails, your insured money is backed by the federal government.

👉 CD Investing Pros and Cons

The Bottom Line

A CD can be a low-risk way to earn a fixed, predictable return on money you can set aside for a while. Just match the term to your goals, mind the early withdrawal penalty and compare APYs before you commit.

FAQs

Can you lose money in a CD?

As long as your CD is held at an FDIC- or NCUA-insured institution and you stay within the insurance limits, your principal is protected. The main way to lose value is by withdrawing early and triggering a penalty. You may also “lose money” in some sense if the APY you’re receiving on a CD is lower than the rate of inflation.

How is CD interest paid?

Interest is credited to your CD on a set schedule, such as monthly or at maturity. Some banks let you transfer interest to another account, while others reinvest it into the CD.

What happens when a CD matures?

You typically get a short grace period to decide what to do. 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 it at the current rate.

Do you pay taxes on CD interest?

Yes. The interest you earn is treated as taxable income for the year it is credited, even if you do not withdraw it. Your bank will send you a 1099-INT form if you earn more than $10 in interest.

Key Terms

Certificate of deposit (CD): A savings product that locks in a fixed interest rate for a set term in exchange for leaving your money untouched until it matures.

Annual percentage yield (APY): The rate that shows how much you earn in a year, including the effect of compounding. Use it to compare CD offers.

Maturity date: The date your CD term ends and you can access your money without a penalty.

Early withdrawal penalty: A fee, usually a set number of months of interest, charged if you take money out of a CD before it matures.

Yield curve: A comparison of interest rates across different terms. An inverted curve means shorter terms pay more than longer ones.

Sources

• Investor.gov: Certificates of Deposit (CDs) 

• Investor.gov: High-Yield CDs: Protect Your Money by Checking the Fine Print 

• Federal Deposit Insurance Corporation: Shopping for a Certificate of Deposit?

• Federal Deposit Insurance Corporation: National Rate: 12 Month CD