What a Certificate of Deposit Actually Is

A certificate of deposit, or CD, is an account where you give a bank a lump sum of money and agree to leave it untouched for a set period of time. In exchange, the bank pays you a higher interest rate than you would get in a regular savings account. When the time period ends—called the maturity date—you get your original money back plus the interest earned.

The trade-off is simple: you lock your money away, and the bank rewards you for it. If you need the money before the maturity date, you will pay a penalty. That penalty is usually a certain number of months' worth of interest, though the exact amount depends on the bank and the CD's terms.

CDs come in different lengths. You might see 3-month CDs, 6-month CDs, 1-year CDs, 3-year CDs, or even 5-year CDs. The longer you agree to lock your money away, the higher the interest rate the bank typically offers you.

Key Takeaways

  • A CD requires you to deposit money for a fixed period and leave it untouched to earn a higher interest rate than a savings account.
  • The maturity date is when your CD term ends and you can withdraw your money without penalty.
  • Withdrawing money early triggers an early withdrawal penalty, usually calculated as a number of months of interest.
  • Longer CD terms generally come with higher interest rates, but your money is locked away for a longer time.
  • Your CD is insured by the FDIC up to $250,000, the same as a regular savings account.

How Interest Works on a CD

When you open a CD, the bank tells you the annual percentage yield, or APY. This is the interest rate you will earn over one year. Unlike a savings account, where the rate can change, your CD rate is locked in for the entire term. If you open a 2-year CD at 4.5% APY, you will earn 4.5% every year for those two years, even if the bank lowers its rates next month.

Interest on a CD is usually paid in one of two ways. Some banks add the interest to your account monthly or quarterly, so you can watch it grow. Other banks hold all the interest until the maturity date and pay it in a lump sum. Ask your bank which method they use before you open the CD.

The longer the CD term, the more interest you earn overall—but only if you leave the money alone. A 5-year CD at 4% will earn more total interest than a 1-year CD at 3.5%, but you cannot touch the money for five years.

What Happens When Your CD Matures

On your maturity date, your CD stops earning interest and the bank considers it closed. At this point, you have a choice: withdraw the money, or roll over the CD into a new one.

If you do nothing, many banks will automatically roll your CD into a new CD with the same term and the bank's current rate. This happens within a few days of maturity. If you do not want this, you need to tell the bank before the maturity date that you want to withdraw the money instead. Some banks give you a grace period—usually 7 to 10 days after maturity—to change your mind without penalty.

When you withdraw, the bank deposits your original money plus all earned interest into your checking or savings account. You can then move it wherever you want, or open a new CD at a different bank if the rates are better.

Early Withdrawal Penalties and When They Apply

If you need your money before the maturity date, you can withdraw it—but the bank will charge you a penalty. The penalty is usually stated as a number of months of interest. For example, a CD might have a "3-month interest penalty," meaning if you withdraw early, you lose three months' worth of the interest you earned.

The penalty is taken from your interest, not from your original deposit. So if you earned $100 in interest and the penalty is $75, you get your original money back plus $25. In rare cases with very short CDs, the penalty might be large enough to wipe out all your interest and cost you some of your principal, so read the terms carefully.

Some banks offer no-penalty CDs, which let you withdraw your money early without losing interest. These CDs usually come with a lower interest rate to make up for the flexibility, so you are trading higher earnings for easier access.

CDs Versus Savings Accounts and Money Market Accounts

The main difference between a CD and a regular savings account is flexibility versus interest. A savings account lets you deposit and withdraw money whenever you want, but the interest rate is lower—often less than 1% APY. A CD locks your money away but pays significantly more interest, sometimes 4% or higher depending on the term and the bank.

A money market account sits in the middle. It usually pays more interest than a savings account but less than a CD, and it gives you limited withdrawal flexibility—you can make a few withdrawals per month without penalty, but not unlimited ones. Money market accounts are useful if you want better returns than savings but need occasional access to your money.

Choose a CD if you have money you will not need for several months or years and want the highest interest rate. Choose a savings account if you need quick access. Choose a money market account if you want something in between.

How FDIC Insurance Protects Your CD

Your CD is insured by the Federal Deposit Insurance Corporation, or FDIC, just like a regular savings account. This means if the bank fails, the FDIC will return your money up to $250,000 per account. The insurance covers your original deposit plus all interest earned, as long as the total does not exceed $250,000.

If you have multiple CDs at the same bank, the FDIC counts them together toward the $250,000 limit. If you have $150,000 in one CD and $120,000 in another at the same bank, only $250,000 total is insured. The extra $20,000 is not protected. If you want to insure more than $250,000, open CDs at different banks—each bank's accounts are insured separately.

Where to Open a CD and What to Compare

You can open a CD at any bank or credit union. Online banks often offer higher interest rates than brick-and-mortar banks because they have lower overhead costs. Before you open a CD, compare the APY, the term length, the early withdrawal penalty, and whether the bank automatically rolls over your CD at maturity.

A CD ladder is a strategy some people use: instead of putting all your money in one long-term CD, you open several CDs with different maturity dates. For example, you might open five 1-year CDs, each maturing in a different month. As each one matures, you can withdraw the money or roll it into a new CD. This gives you regular access to portions of your money while still earning CD rates on the rest.

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. Some banks offer no-penalty CDs that let you withdraw without losing interest, though these typically pay lower rates.

What is the difference between APY and APR on a CD?

APY (annual percentage yield) includes the effect of compounding—interest earned on interest. APR (annual percentage rate) does not. Banks are required to show you the APY on CDs, which is the number that matters for comparing rates.

What happens if I do not withdraw my money when the CD matures?

Most banks automatically roll your CD into a new one with the same term at the current interest rate. You usually have a grace period of 7 to 10 days after maturity to withdraw the money instead without penalty. Check with your bank about their specific rollover policy.

Is a CD a good place to keep emergency savings?

Not usually. Emergency savings should be in an account you can access quickly without penalty. A regular savings account or money market account is better for this purpose. CDs work better for money you know you will not need for several months or longer.

Can I open a CD with a very short term, like one month?

Some banks offer CDs with terms as short as one month, though these are less common. The interest rates on very short CDs are usually lower than longer-term CDs. You will need to check with individual banks to see what options they offer.