A CD is a savings account where you lock up your money 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, agree not to touch it for a specific period—usually three months to five years—and the bank pays you a fixed interest rate on that money. When the time is up, you get your original deposit back plus the interest earned.

The trade-off is simple: you lose access to your cash for the duration, but you earn more interest than you would in a regular savings account. Banks offer higher rates on CDs because they know they can count on having your money available to lend out during that period. Your money is FDIC-insured up to $250,000 per bank, so the principal is protected even if the bank fails.

CDs are one of the safest places to put money because there is no market risk—your rate is locked in from day one and will not change. You will not earn a fortune, but you will know exactly what you will have when the CD matures.

Key Takeaways

  • You deposit a fixed amount of money and agree not to withdraw it for a set term, typically ranging from three months to five years.
  • The bank pays you a fixed interest rate that is higher than a regular savings account, and that rate does not change during the term.
  • If you withdraw money before the term ends, you will pay an early withdrawal penalty that usually erases most or all of the interest you earned.
  • Your deposit is FDIC-insured up to $250,000, so your principal is protected regardless of what happens to the bank.
  • CDs work best for money you do not need to access soon and want to keep safe while earning a predictable return.

How the interest rate and term length work together

When you open a CD, you choose both the term length and the bank chooses the rate it will pay for that term. Longer terms usually come with higher rates because the bank gets to use your money for a longer period. A three-month CD might pay 4.5%, while a five-year CD from the same bank might pay 5.2%—but rates vary by bank and change daily based on what the Federal Reserve does with interest rates.

The interest compounds, meaning you earn interest on your interest. If you deposit $5,000 in a one-year CD at 4.8% compounded monthly, you will not simply earn $240 at the end. Each month, the bank calculates interest on your balance plus the interest already added, so you end up with slightly more. The exact amount depends on how often the bank compounds—daily, monthly, or at maturity.

Once the term ends, the CD matures. The bank will either automatically roll the money into a new CD at the current rate, return it to your checking account, or hold it in a non-interest-bearing account. Check your bank's policy before opening a CD so you know what happens at maturity.

What happens if you need the money before the term ends

Early withdrawal penalties are the main catch with CDs. If you pull money out before the maturity date, the bank charges a fee that is usually measured in months of interest. A common penalty might be three months of interest, which means if you withdraw early from a CD earning $100 per year, you lose $25.

The penalty structure varies by bank and by term length. Some banks charge a flat dollar amount; others charge a percentage of your deposit. A few banks offer "no-penalty CDs" that let you withdraw without a fee, but they pay lower interest rates to compensate. Before you open any CD, read the disclosure document to see exactly what the early withdrawal penalty is.

If you think you might need the money, a no-penalty CD or a shorter-term CD (like three or six months) may be a better fit than locking in for five years. The interest rate is lower, but you keep your options open.

Different types of CDs and when to use each one

Most banks offer standard CDs with fixed rates and fixed terms. But some offer variations. A bump-up CD lets you request one rate increase during the term if rates go up—useful if you think the Federal Reserve might raise rates while your CD is open. A step-up CD automatically increases your rate at set intervals, usually paying a lower starting rate in exchange. A no-penalty CD lets you withdraw without a fee, but the rate is lower than a standard CD.

There are also IRA CDs, which are CDs held inside a retirement account and follow IRA withdrawal rules rather than standard CD rules. These are useful if you want CD safety inside a tax-advantaged account. Some banks offer jumbo CDs that require a larger minimum deposit (often $100,000 or more) and pay slightly higher rates in return.

For most people saving for a specific goal in the next one to five years, a standard CD from a bank with a strong reputation is the right choice. If you want flexibility, a no-penalty CD or a shorter term makes sense. If you think rates will rise, a bump-up CD is worth comparing.

How CD rates compare to other savings options

A regular savings account at most banks pays 0.01% to 0.05% interest. A money market account might pay slightly more, around 0.5% to 1.5%, depending on your balance and the bank. A high-yield savings account at an online bank often pays 4% to 5.3%, which is competitive with CDs and keeps your money accessible.

The advantage of a CD is that your rate is locked in for the entire term, so you know exactly what you will earn. A high-yield savings account rate can drop at any time if the bank decides to lower it. The disadvantage is that you cannot access the money without paying a penalty. If you need flexibility and do not mind a slightly lower rate, a high-yield savings account wins. If you have money you will not touch and want certainty, a CD usually pays more.

Treasury bills (short-term government bonds) and money market funds are other options that compete with CDs, but they involve more complexity and are less suitable for beginners. For straightforward, safe saving, CDs and high-yield savings accounts are the two main choices.

Where to open a CD and what to compare

You can open a CD at any bank or credit union. Online banks often pay higher rates than brick-and-mortar banks because they have lower overhead costs. Credit unions sometimes pay competitive rates for members. Before opening a CD, compare the rate, the term options, the early withdrawal penalty, and the minimum deposit required.

Use a CD rate comparison tool or visit several banks' websites to see current rates. Rates change daily, so what was the best rate yesterday may not be today. Also confirm that the bank is FDIC-insured (or the credit union is NCUA-insured) so your deposit is protected. If you have more than $250,000 to deposit, you can open CDs at multiple banks to keep each one under the insurance limit.

Some banks offer promotional rates for new customers or for opening CDs during certain periods. These rates are real and worth taking advantage of, but they usually apply only to new money and only for a limited time. Read the fine print to understand any restrictions.

The tax side of CD interest

Interest you earn on a CD is taxable income in the year you earn it, even if you do not withdraw the money. If your CD earns $200 in interest, you owe federal income tax on that $200. The bank will send you a 1099-INT form in January showing how much interest you earned, and you report it on your tax return.

If you hold a CD inside a traditional IRA, the interest is tax-deferred until you withdraw from the IRA. If you hold it in a Roth IRA, the interest grows tax-free. For CDs outside retirement accounts, there is no way to avoid the tax, so factor it into your decision. A CD earning 4.8% might net you 3.5% after taxes if you are in a 27% tax bracket.

Frequently Asked Questions

Can I withdraw money from a CD before it matures?

Yes, but you will pay an early withdrawal penalty set by the bank. The penalty is usually several months of interest and can wipe out most or all of your earnings. Some banks offer no-penalty CDs that let you withdraw without a fee, but they pay lower rates. Check your bank's terms before opening a CD.

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

A savings account lets you deposit and withdraw money anytime with no penalty, but it pays very low interest (usually under 0.1%). A CD locks your money for a set term and pays higher interest, but you lose access and face a penalty if you withdraw early. Choose a savings account if you need flexibility; choose a CD if you have money you will not need soon.

Are CDs safe if the bank fails?

Yes. Your CD is FDIC-insured up to $250,000 per bank, meaning the federal government guarantees your deposit even if the bank goes under. If you have more than $250,000, open CDs at different banks to keep each one under the limit and fully protected.

What happens when my CD matures?

The bank will either automatically roll your money into a new CD at the current rate, move it to a non-interest-bearing account, or return it to your checking account. Check your bank's policy before opening a CD so you know what to expect. You can usually change the destination or term during a grace period after maturity.

Is a CD a good place to put an emergency fund?

Not ideal. Emergency funds should be accessible without penalty, so a high-yield savings account is better. A CD works for money you know you will not need for several months or years. Use a savings account for emergencies and a CD for other goals like a vacation or down payment.