A certificate of deposit is a savings product where you lend money to a bank for a fixed period in exchange for a may provide interest rate

When you open a CD, you agree to leave a sum of money untouched until a specific date — called the maturity date. In return, the bank pays you a set interest rate, locked in from the day you open it. That rate does not change, even if the bank's rates rise or fall while your CD is active. At maturity, you get back your original deposit plus all the interest earned.

The trade-off is access. You cannot withdraw the money early without a penalty — usually a loss of some or all of the interest you would have earned, or sometimes a percentage of the principal itself. That penalty is why CDs pay more interest than regular savings accounts: the bank knows your money will stay put, so it rewards you for the certainty.

Key Takeaways

  • A CD locks your money for a set term (typically three months to five years) in exchange for a higher interest rate than a savings account offers.
  • The interest rate is fixed when you open the CD and does not change, even if market rates move.
  • Withdrawing money before the maturity date triggers an early withdrawal penalty, which reduces your earnings or principal.
  • CDs are insured by the FDIC up to $250,000 per depositor per bank, making them one of the safest places to keep money.
  • You choose the term length when you open a CD, and different terms pay different rates — longer terms usually pay more.

How the interest rate and term length work together

When you shop for a CD, you will see two numbers: the interest rate and the term. The term is how long the bank holds your money — common options are three months, six months, one year, two years, three years, and five years. Longer terms almost always pay higher rates because the bank can use your money for a longer period without you asking for it back.

The interest rate is what the bank pays you as a percentage of your deposit each year. If you open a one-year CD for $5,000 at 4.5% annual interest, you will earn roughly $225 by the time it matures (the exact amount depends on how the bank calculates interest — daily, monthly, or at maturity). That $225 is added to your account, so you withdraw $5,225 when the term ends.

Rates change constantly based on what the Federal Reserve does with its benchmark interest rate. When the Fed raises rates, new CDs pay more. When it lowers rates, new CDs pay less. Your existing CD's rate never changes — it is locked in the day you open it.

What happens if you need the money before maturity

The early withdrawal penalty is the cost of breaking your agreement with the bank. The penalty varies by bank and by CD term. Some banks charge a flat fee (for example, $25). Others charge a percentage of the interest earned (for example, six months of interest). A few charge a percentage of the principal itself, though this is less common.

Before you open a CD, the bank must disclose the penalty in writing. Read it carefully, because it directly affects whether a CD makes sense for money you might need sooner than you think. If you are saving for a down payment in two years but the only CD you can find is a five-year term with a steep penalty, a regular savings account might be the safer choice.

FDIC insurance and how your money is protected

CDs held at FDIC-insured banks are covered by federal deposit insurance up to $250,000 per depositor per bank. This means if the bank fails, the government guarantees you will get your money back, up to that limit. This protection applies whether the bank goes under or the CD matures normally — your deposit is safe either way.

If you have more than $250,000 to save, you can open CDs at different banks to stay within the insurance limit at each one. Some people also use brokered CDs, which are CDs sold through investment firms; these may have different insurance rules, so check before you buy.

CD laddering: a strategy to balance rate and access

One way to earn higher CD rates while keeping some money accessible is CD laddering. You divide your savings into equal amounts and open CDs with different maturity dates — for example, one-year, two-year, and three-year CDs. As each one matures, you can withdraw the money, reinvest it in a new longer-term CD, or move it elsewhere.

Laddering works because longer-term CDs pay more, but you do not lock all your money away for the longest period. If interest rates rise, you get to reinvest maturing CDs at the new higher rates. If you need cash unexpectedly, you only have to wait until the next CD matures instead of paying a penalty.

How CDs compare to other savings vehicles

A regular savings account is more flexible — you can withdraw anytime without penalty — but it pays much less interest. A money market account sits between the two: it pays more than savings but less than CDs, and it usually lets you write checks or make a few withdrawals per month. A high-yield savings account can sometimes match or beat CD rates while keeping your money accessible, though rates change frequently.

Bonds and bond funds are different products entirely. They involve lending to governments or companies rather than banks, they carry different risks, and they are not FDIC-insured. For money you want to keep completely safe and earn a may provide return, a CD is simpler and more predictable than bonds.

What to consider before opening a CD

Ask yourself three questions: How long can I leave this money untouched? What is the early withdrawal penalty? And what is the interest rate compared to other banks right now? If you might need the money within the CD's term, the penalty could wipe out all your interest earnings, so a savings account is safer. If you are certain the money will stay put, a CD locks in a rate that will not change, which is valuable when rates are high.

Shop around. CD rates vary significantly between banks, and online banks often pay more than brick-and-mortar branches. A difference of 0.5% on a $10,000 CD over one year is $50 — worth five minutes of comparison shopping.

Frequently Asked Questions

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

No. A CD is a fixed contract. You deposit a lump sum at the start, and that amount earns interest until maturity. You cannot add to it or withdraw part of it without triggering the early withdrawal penalty. If you want to save more, you open a separate CD.

What happens to my CD when it matures?

The bank will notify you before maturity. You can then withdraw the money, open a new CD at the current rate, or move it to a savings account. If you do nothing, many banks automatically renew the CD at the new current rate — check your bank's policy so you are not surprised.

Is the interest I earn on a CD taxable?

Yes. CD interest is ordinary income and must be reported on your tax return. The bank will send you a 1099-INT form at the end of the year showing how much interest you earned. This is true even if you do not withdraw the money yet.

Can I use a CD if I am saving for retirement?

Yes, but only in a regular taxable account. CDs do not come in IRA or 401(k) versions. If you want CD-like safety inside a retirement account, you would need to ask your plan provider whether they offer stable value funds or short-term bond funds as options.

What if interest rates drop after I open my CD?

Your rate stays the same — that is the whole point of a CD. You are locked in at the rate you agreed to when you opened it. If rates fall, you benefit. If rates rise, you do not, which is why longer-term CDs pay more upfront to compensate for that risk.