A Certificate of Deposit is a savings account where you agree to leave money untouched for a set time in exchange for a higher interest rate

A Certificate of Deposit (CD) is a contract between you and a bank. You give the bank a lump sum of money — say $5,000 — and promise not to touch it for a specific period, called the term. In return, the bank pays you a fixed interest rate that is almost always higher than what a regular savings account offers. When the term ends, you get your original money back plus the interest earned.

The trade-off is straightforward: you lose access to your money for the duration of the term. If you withdraw before the term is up, the bank charges you a penalty, usually a few months' worth of interest. This penalty is why CDs pay more — the bank knows your money will stay put, so it can lend that money out with confidence.

CDs come in different term lengths. A bank might offer 3-month CDs, 6-month CDs, 1-year CDs, 2-year CDs, and 5-year CDs. The longer the term, the higher the interest rate is usually (though not always — rates depend on what the Federal Reserve is doing and what the bank decides). You pick the term that matches when you think you'll need the money.

Key Takeaways

  • A CD locks your money away for a set period in exchange for a may provide interest rate higher than a savings account.
  • If you withdraw before the term ends, you pay a penalty that typically costs several months of the interest you earned.
  • The bank knows exactly how long it can lend your money, so it rewards you with a better rate than it offers on accounts you can empty anytime.
  • CDs are FDIC-insured up to $250,000 per depositor per bank, so your principal is protected even if the bank fails.

How the interest rate and term length work together

The interest rate on a CD is fixed, meaning it does not change for the entire term. If you buy a 2-year CD at 4.5%, you will earn 4.5% every year for those two years, even if the bank's rates drop to 2% next month. That certainty is part of what makes CDs appealing — you know exactly what you will earn.

Term length and rate are connected but separate choices. A 6-month CD might pay 4.0%, while a 1-year CD from the same bank might pay 4.3%. Generally, longer terms pay higher rates because the bank is locking in your money for longer. But this is not a rule — sometimes a 3-month CD pays nearly as much as a 1-year CD if rates are falling, or if the bank is trying to attract deposits for a specific reason.

You choose the term based on when you actually need the money. If you know you will need $5,000 in 18 months, a 1-year CD leaves you short. A 2-year CD works, but you will pay a penalty if you withdraw at month 18. A 6-month CD means you will have to reinvest the money when it matures, and rates might be lower by then. There is no perfect answer — it depends on your situation.

What happens when a CD reaches maturity

When your CD term ends, the bank sends you a notice (usually 7 to 10 days before maturity). At that point, you have a few options. You can withdraw the money and the interest in full. You can let the bank automatically roll the money into a new CD at whatever the current rate is — this is called auto-renewal, and most banks do it unless you tell them not to. Or you can move the money to a different bank or product.

Auto-renewal is convenient but risky if rates have dropped. If your 1-year CD at 4.5% matures and rates are now 3.0%, the bank will roll your money into a new 1-year CD at 3.0% unless you contact them and say no. You have a grace period (usually 7 to 10 days after maturity) to withdraw without penalty, so mark your calendar and check the rate before the renewal happens.

Some banks offer bump-up CDs or raise-your-rate CDs, which let you increase your interest rate once during the term if rates go up. These are less common and usually pay a slightly lower starting rate to compensate. They are worth considering if you think rates might rise while your CD is active.

The penalty for early withdrawal and how to avoid it

If you withdraw money from a CD before the term ends, the bank deducts an early withdrawal penalty from your interest. The penalty amount varies by bank and by term length. A 3-month CD might have a penalty of one month's interest, while a 5-year CD might have a penalty of six months' interest. A few banks charge a flat dollar amount instead, like $25 or $50.

The penalty comes out of what you earned, not from your principal. If you put in $5,000, earn $200 in interest over 8 months, and then withdraw early with a 3-month penalty, you lose $50 of interest and walk away with $5,150. You still get your original $5,000 back. However, if you withdraw very early (say, after one month of a 1-year CD), the penalty might be larger than the interest you have earned, so you actually get less than $5,000 back.

The best way to avoid the penalty is to only buy a CD if you are confident you will not need the money before maturity. If there is any chance you might need it, keep that money in a regular savings account instead, even if the rate is lower. A CD is for money you have decided to set aside.

Why a bank pays more for a CD than a savings account

A savings account is liquid, meaning you can withdraw money anytime without penalty. A CD is illiquid — your money is locked up. Banks prefer illiquid deposits because they can lend that money out with certainty. If a bank knows $50,000 will sit in a CD for two years, it can make a two-year loan at a profitable rate. With a savings account, the money might leave tomorrow, so the bank has to be more cautious.

That certainty is worth money to the bank, so it passes some of that value to you in the form of higher interest. A savings account might pay 0.01% while a 1-year CD pays 4.0%. The difference is not just about the current interest rate environment — it is about the bank's ability to plan and lend confidently.

FDIC insurance and how much you can protect

CDs are FDIC-insured, which means if your bank fails, the Federal Deposit Insurance Corporation will reimburse you up to $250,000 per depositor per bank. Your principal and all earned interest are covered up to that limit. This is the same protection that covers savings accounts and checking accounts.

If you have $250,000 in a 1-year CD and $250,000 in a savings account at the same bank, you have two separate $250,000 protections — one for each account type. But if you have two CDs at the same bank totaling $500,000, only $250,000 is insured. To protect more than $250,000, you would need to split your money across different banks.

This insurance is automatic — you do not have to do anything to set up it. It applies whether the bank is large or small, and it covers the full amount you deposited plus all interest earned, as long as the total does not exceed $250,000.

Comparing CDs to other ways to save

A CD is not the only way to earn interest on savings. A high-yield savings account lets you earn almost as much as a CD (sometimes the same rate) while keeping your money accessible. A money market account is similar — it offers higher rates than a regular savings account but lets you withdraw anytime. A Treasury bill is a short-term loan to the U.S. government that pays interest and is backed by the government instead of FDIC insurance.

The choice depends on whether you need access to the money. If you might need it within the next year, a high-yield savings account is safer because there is no penalty for withdrawal. If you are certain you will not touch the money for a specific period, a CD locks in a rate and removes the temptation to spend it. If you have a very large sum and want to spread your FDIC insurance across multiple banks, CDs at different institutions can be a straightforward way to do that.

Frequently Asked Questions

Can I withdraw from a CD before it matures?

Yes, but you will pay an early withdrawal penalty. The penalty is usually several months of interest, though it varies by bank and term length. If you withdraw very early, the penalty might be larger than the interest you have earned, leaving you with less than your original deposit.

What is the difference between a CD and a savings account?

A savings account lets you withdraw money anytime without penalty, but it pays a much lower interest rate. A CD locks your money for a set term and pays a higher rate in exchange. Choose a savings account if you might need the money; choose a CD if you are certain you will not touch it for the full term.

Do I have to pay taxes on CD interest?

Yes. CD interest is taxable income in the year you earn it, even if you do not withdraw the money. The bank will send you a 1099-INT form at tax time showing how much interest you earned. This is true whether the CD is in a regular account or a retirement account like an IRA.

What happens if the bank fails while I have a CD?

The FDIC will reimburse you up to $250,000, including your principal and all interest earned. This protection is automatic and applies to all banks that are FDIC-insured. You do not lose money if the bank fails, as long as your total at that bank does not exceed $250,000.

Can I move a CD to a different bank before it matures?

You can withdraw the money and move it, but you will pay the early withdrawal penalty. You cannot transfer a CD itself to another bank — you have to close it and start a new one elsewhere. If rates have risen, it might be worth paying the penalty to move to a higher-paying CD, but do the math first to make sure the higher rate makes up for the penalty cost.