What a CD savings account is

A CD (certificate of deposit) is a savings account where you agree to leave your money untouched for a set period of time — usually three months to five years — in exchange for a higher interest rate than a regular savings account offers. The bank pays you that interest when the term ends.

Think of it as a deal: you promise not to withdraw the money early, and the bank promises to pay you more. If you break that promise and take the money out before the term is up, you pay a penalty — usually a few months' worth of the interest you would have earned.

CDs are FDIC-insured at most banks, which means if the bank fails, the government protects your money up to $250,000. That makes them one of the safest places to keep money you know you won't need right away.

Key Takeaways

  • A CD locks your money away for a fixed time period in exchange for a higher interest rate than a regular savings account.
  • You choose the term length when you open the CD — common options are three months, six months, one year, three years, and five years.
  • If you withdraw money before the term ends, you pay an early withdrawal penalty, usually equal to a few months of interest.
  • CDs are FDIC-insured up to $250,000, making them a safe place to store money you won't need in the near term.
  • The longer the term, the higher the interest rate — but rates change constantly, so shop around before opening one.

How the interest rate works

When you open a CD, the bank tells you the annual percentage yield (APY) — the amount of interest you'll earn over one year, expressed as a percentage. That rate is locked in for the entire term. If rates go up after you open the CD, your rate stays the same. If rates go down, you're protected.

The longer you agree to lock your money away, the higher the rate usually is. A three-month CD might pay 4.5% APY, while a five-year CD at the same bank might pay 5.2%. The bank pays you this way because they want to use your money for longer.

Interest rates change constantly based on what the Federal Reserve does. Before you open a CD, check rates at several banks — online banks often pay more than brick-and-mortar branches. The difference between 4.5% and 5.2% might not sound like much, but on $10,000 it adds up to real money over time.

When the CD term ends

When your CD reaches its maturity date — the day the term ends — the bank deposits your original money plus all the interest into your account. You don't have to do anything; it happens automatically.

At that point, you have a choice. You can withdraw the money, move it to a regular savings account, or open a new CD. If you do nothing, many banks automatically renew the CD for another term at whatever the current rate is. Read the fine print when you open the CD so you know what your bank does — some banks give you a grace period (usually seven to ten days) to decide before they renew.

The early withdrawal penalty

If you need the money before the term ends, you can withdraw it, but you'll pay a penalty. The penalty is usually three to six months of the interest you would have earned. On a $10,000 CD earning 5% APY, that could mean losing $125 to $250.

Some banks charge a flat dollar amount instead of a percentage of interest. A few banks offer "no-penalty CDs" with slightly lower rates but no penalty if you withdraw early — these are worth looking at if you're not completely sure you can leave the money alone.

The penalty comes out of your CD balance, not from your checking account. So if you withdraw $10,000 early and the penalty is $200, you get $9,800.

CD laddering: a way to access your money gradually

One strategy people use to get higher CD rates while still having access to some money is called CD laddering. Instead of putting all your money in one five-year CD, you split it into five one-year CDs. Each year, one CD matures and you can withdraw that money or open a new one.

This gives you flexibility — you're not locked out of all your money for five years — while still earning more than you would in a regular savings account. It also protects you if rates rise: when each CD matures, you can open a new one at the current (hopefully higher) rate.

For example, you might open five $2,000 CDs with maturity dates one year apart. Year one, the first CD matures and you can use that $2,000. Year two, the second one matures, and so on. Meanwhile, the remaining CDs are still earning the higher rate.

CDs versus regular savings accounts

A regular savings account lets you withdraw money whenever you want, but the interest rate is usually much lower — often less than 1% APY. A CD locks your money away but pays two to five times more interest.

Choose a CD if you have money you won't need for several months or longer. Choose a regular savings account if you might need the money soon or want the flexibility to access it without a penalty. Some people use both: a regular savings account for emergencies and a CD for money they're saving toward a specific goal.

Where to open a CD

You can open a CD at any bank or credit union. Online banks usually offer higher rates than traditional banks because they have lower overhead costs. Credit unions sometimes offer competitive rates to their members.

Before you open a CD, check the rates at several places. A difference of even 0.5% APY makes a real difference over time. You can compare rates on websites that list CDs from multiple banks, or visit each bank's website directly.

Make sure the bank or credit union is FDIC-insured (banks) or NCUA-insured (credit unions). You can check this on the FDIC or NCUA website. If your CD is at an insured institution, your money is protected up to $250,000 even if the bank fails.

Frequently Asked Questions

Can I add money to a CD after I open it?

No. A CD is a fixed amount of money for a fixed time period. Once you open it, you can't add to it. If you want to save more money in a CD, you have to open a separate CD with a new deposit.

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

You can withdraw it, but you'll pay an early withdrawal penalty — usually three to six months of interest. Some banks offer no-penalty CDs with lower rates if you want to avoid this risk. Check your CD agreement to see exactly what the penalty is.

Is a CD a good place to keep emergency money?

Not usually. Emergency money should be in a regular savings account where you can access it when ready without a penalty. CDs work better for money you're saving toward a specific goal and won't need for several months or longer.

Do I have to pay taxes on CD interest?

Yes. The interest you earn on a CD is taxable income. The bank will send you a 1099-INT form at tax time showing how much interest you earned. You report this on your tax return.

What's the difference between a CD and a money market account?

A money market account lets you withdraw money whenever you want and usually pays more interest than a regular savings account, but less than a CD. A CD locks your money for a set time but pays more interest. Choose based on whether you need access to the money.