What happens when you open a CD

A certificate of deposit is an agreement between you and a bank or credit union: you give them a sum of money for a fixed period of time, and they pay you a set interest rate on that money. You cannot touch the money during that period without paying a penalty. When the period ends — called the maturity date — the bank returns your original deposit plus the interest you earned.

The bank uses your money during that time to make loans or invest. In exchange, they may provide you a specific rate of return, locked in from day one. That rate does not change, even if the Federal Reserve raises or lowers interest rates after you open the CD.

CDs come in different lengths: three months, six months, one year, three years, five years, and sometimes longer. The longer you agree to lock up your money, the higher the interest rate the bank typically offers you. A five-year CD will pay more than a one-year CD at the same bank, because the bank has your money for longer and can plan further ahead.

Key Takeaways

  • You deposit a fixed amount, agree to leave it untouched for a set period, and receive a may provide interest rate that does not change.
  • If you withdraw money before the maturity date, you pay an early withdrawal penalty that reduces your earnings or principal.
  • Longer CD terms (three to five years) typically pay higher rates than shorter ones (three to six months), but your money is locked away longer.
  • Your deposit is insured up to $250,000 per account holder per bank by the FDIC (or NCUA if you use a credit union), so your principal is protected even if the bank fails.
  • When a CD matures, you can withdraw the money, open a new CD, or let it roll over into a new CD at the bank's current rate.

How the interest rate is set and what you earn

Banks set CD rates based on what the Federal Reserve is doing and what rates competitors are offering. When the Fed raises its benchmark rate, banks typically raise CD rates within weeks. When the Fed cuts rates, CD rates fall. You will see different rates at different banks on the same day — shopping around matters.

The interest you earn is calculated on your principal (the amount you deposited). If you deposit $5,000 in a one-year CD at 4.5% annual percentage yield (APY), you will earn roughly $225 in interest over the year, assuming the rate does not change and you do not withdraw early. The exact amount depends on how the bank compounds interest — daily, monthly, or at maturity — but the APY already accounts for that, so you can compare rates across banks using APY alone.

Interest is paid to you either when the CD matures or at regular intervals (monthly or quarterly) depending on the CD type. Some banks add it to your CD balance; others deposit it into a linked savings account. Check the CD's terms to see which applies.

The early withdrawal penalty and why it matters

If you need your money before the maturity date, you can withdraw it, but the bank will charge you an early withdrawal penalty. This penalty is a fixed amount or a number of months' worth of interest — it varies by bank and CD term. A common penalty on a one-year CD might be three months of interest; on a five-year CD, it might be six months or a year.

The penalty comes out of your earnings first. If you earned $225 in interest and the penalty is $112.50 (six months of interest), you walk away with $112.50 in interest instead of $225. If the penalty is larger than your interest earned, it comes out of your principal, and you get back less than you deposited.

This is why CDs work best for money you genuinely will not need. If you might need the cash in an emergency, a high-yield savings account is safer — you can withdraw anytime with no penalty, though the rate is usually lower than a CD's.

What happens when your CD matures

On the maturity date, the bank sends you a notice (usually 10 to 30 days before). You then have a choice: withdraw the money, open a new CD, or let the old CD roll over into a new one automatically.

If you do nothing, many banks will automatically roll your CD into a new one at the bank's current rate. That new rate might be higher or lower than what you were earning. Read the maturity notice carefully to see what the new rate will be and when the new term begins. You typically have a grace period (often 7 to 10 days after maturity) to withdraw without penalty if you change your mind about rolling over.

If rates have fallen since you opened your CD, rolling over might lock you into a lower rate. If rates have risen, rolling over might give you a better rate. Some people use maturity as a checkpoint to shop around and move their money to a bank offering a higher rate.

FDIC insurance and what is protected

Your CD is insured by the FDIC (Federal Deposit Insurance Corporation) up to $250,000 per depositor per bank. If the bank fails, the FDIC returns your principal and any accrued interest up to that limit. This protection applies even if the bank goes under the day before your CD matures.

The $250,000 limit applies per bank, not per CD. If you have two CDs at the same bank totaling $300,000, only $250,000 is insured. If you have CDs at two different banks, each bank's deposits are insured separately up to $250,000.

If you use a credit union instead of a bank, your CD is insured by the NCUA (National Credit Union Administration) under the same $250,000 limit. The protection is identical; only the insuring agency changes.

CD ladders and how they work

A CD ladder is a strategy where you open multiple CDs with different maturity dates so that one matures every few months or every year. For example, you might open five one-year CDs, each maturing in years one through five. Each year, one CD matures and you can reinvest it at the current rate.

Laddering gives you two advantages: you earn higher rates than you would in a savings account, and you get regular access to portions of your money without paying an early withdrawal penalty. If you need cash, you wait for the next rung of the ladder to mature instead of breaking a CD early.

Laddering works best if you have a lump sum to invest and do not need all the money at once. If you are adding money gradually, a ladder becomes harder to maintain.

CDs versus savings accounts and money market accounts

A CD pays a higher rate than a regular savings account because you agree to lock up your money. A high-yield savings account typically pays 4% to 5% APY right now, depending on the bank. A one-year CD at the same bank might pay 4.5% to 5.25%. The difference is small, but it compounds over time.

The trade-off is flexibility. With a savings account, you can withdraw anytime with no penalty. With a CD, you pay a penalty if you withdraw early. If you are uncertain whether you will need the money, the savings account is safer. If you are confident the money will sit untouched, the CD's higher rate is worth locking it up.

A money market account sits between the two: it pays more than a regular savings account (often close to a CD rate) but allows a limited number of withdrawals per month without penalty. Money market accounts are useful if you want a higher rate but need occasional access, though the rate advantage over savings accounts has narrowed in recent years.

Frequently Asked Questions

Can I withdraw from a CD before it matures?

Yes, but you will pay an early withdrawal penalty set by the bank. The penalty is usually a number of months' worth of interest. It comes out of your earnings first; if the penalty exceeds your interest, it reduces your principal. Check your CD's terms to see the exact penalty before you open it.

What is APY and how is it different from interest rate?

APY (annual percentage yield) is the total return you earn in a year, including the effect of how often interest is compounded. A bank might compound interest daily, monthly, or quarterly. APY already accounts for this, so you can compare APY across banks without doing extra math. The stated interest rate alone does not tell you the full picture.

What happens if I do not touch my CD when it matures?

Most banks automatically roll your CD into a new one at the current rate. You will receive a notice before maturity telling you the new rate and the new term. You usually have a grace period (often 7 to 10 days) to withdraw without penalty if you want to move your money elsewhere instead.

Is my CD safe if the bank fails?

Yes. The FDIC insures CDs up to $250,000 per depositor per bank, even if the bank fails. Your principal and accrued interest are protected. If you use a credit union, the NCUA provides the same protection.

Should I open a CD or keep money in a savings account?

Open a CD if you have money you will not need for several months or longer and want the highest rate available. Use a savings account if you might need the money soon or want the flexibility to withdraw anytime. A CD ladder can give you both: higher rates and regular access to portions of your money.