What a CD account is and how it differs from a savings account

A CD (certificate of deposit) is a bank account where you agree to leave money untouched for a set period—called the term—in exchange for a fixed interest rate. The bank pays you that rate for the entire term, regardless of whether market rates go up or down. When the term ends, you get your original deposit back plus the interest earned.

The key difference from a regular savings account: you cannot withdraw the money early without a penalty. A savings account lets you take money out whenever you want. A CD locks your money in. In return, the bank offers you a higher interest rate than you would get in savings—sometimes significantly higher, depending on the term length and current market conditions.

CDs come in different term lengths. Common options are 3 months, 6 months, 1 year, 2 years, 3 years, and 5 years. Some banks offer terms as short as 1 month or as long as 10 years. The longer the term, the higher the interest rate is usually—though this is not may provide and depends on what the bank decides to offer.

Key Takeaways

  • A CD locks your money for a set term (3 months to 5 years typically) in exchange for a fixed interest rate higher than savings accounts.
  • You cannot withdraw money before the term ends without paying an early withdrawal penalty, which the bank sets and discloses upfront.
  • When the term ends, your account matures and you can withdraw the money or roll it into a new CD at the current rate.
  • CDs are FDIC-insured up to $250,000 per depositor per bank, so your principal is protected even if the bank fails.
  • The interest rate is fixed for the entire term, so you know exactly how much you will earn regardless of market changes.

How the interest rate and term length work together

The interest rate on a CD is fixed, meaning it does not change during the term. If you open a 2-year CD at 4.5%, you earn 4.5% for the full 2 years, even if the bank raises rates to 5% next month. This is both a protection and a risk: you are protected from rate cuts, but you miss out if rates rise.

Term length and rate are connected but separate decisions. A 1-year CD might pay 4.0%, while a 3-year CD at the same bank might pay 4.5%. The longer you commit your money, the higher the rate usually is—but not always. Banks set these rates based on their own needs and market conditions, so comparing across banks is essential. A 1-year CD at Bank A might pay more than a 3-year CD at Bank B.

Interest on CDs is typically compounded daily or monthly and added to your account. Some CDs let you withdraw interest as it accrues without penalty, while others require you to leave it alone until maturity. Check the terms before you open the account.

What happens when your CD matures

When your term ends, your CD matures. At that point, the bank stops earning interest and your account enters a grace period—usually 7 to 10 days, though this varies by bank. During this window, you can withdraw your money without penalty, or you can roll it into a new CD.

If you do nothing during the grace period, many banks automatically renew your CD into a new term at the current rate. This can work in your favor if rates have risen, but it locks you in again if rates have fallen. Read your CD agreement to see what your bank does by default, and set a reminder before maturity so you can make an active choice.

Some people use a CD ladder—opening multiple CDs with staggered maturity dates so that one matures every few months or years. This gives you regular access to portions of your money and lets you take advantage of rate changes without locking everything in at once.

Early withdrawal penalties and when they apply

If you need your money before the term ends, you can withdraw it, but the bank will charge an early withdrawal penalty. The penalty amount varies widely by bank and by term length. A 3-month CD might have a penalty of 1 month's interest, while a 5-year CD might have a penalty of 6 months' interest or more.

The penalty is deducted from your interest earnings first. If the penalty is larger than the interest you have earned so far, the bank takes the difference from your principal. For example, if you opened a $10,000 CD at 4% for 1 year and withdrew after 3 months, you might have earned $100 in interest but face a $200 penalty—meaning you would get back $9,900, not $10,000.

Before opening a CD, ask the bank for the exact penalty terms in writing. Some banks offer no-penalty CDs that let you withdraw early without a fee, though the interest rate on these is usually lower than on traditional CDs. If you think you might need the money, a no-penalty CD or a shorter-term CD might be a better fit than locking in a long term with a steep penalty.

FDIC insurance and how your money is protected

Money in a CD at an FDIC-insured bank is protected up to $250,000 per depositor per bank. This means if the bank fails, the federal government guarantees you will get your money back, up to that limit. The CD does not have to mature for you to receive this protection—you are covered from the moment you open the account.

The $250,000 limit applies per bank, not per account. If you have a CD and a savings account at the same bank, they share the $250,000 limit. If you want to protect more than $250,000, you can open CDs at different FDIC-insured banks, and each bank's $250,000 limit applies separately.

Check that your bank is FDIC-insured before you open a CD. Most traditional banks are, but some online banks and credit unions are not. You can search the FDIC's bank database on their website to confirm.

CD rates and how to compare them across banks

CD rates change constantly based on the Federal Reserve's interest rate decisions and each bank's funding needs. When the Fed raises rates, banks typically raise CD rates too—but not always at the same speed or by the same amount. When the Fed cuts rates, CD rates fall, but again, the timing and size of the cut varies by bank.

Online banks usually offer higher CD rates than brick-and-mortar banks because they have lower overhead costs. A 1-year CD at a major national bank might pay 3.5%, while the same term at an online bank might pay 4.5% or higher. The trade-off is that online banks offer fewer in-person services and may have less familiar names.

To compare rates, check multiple banks' websites or use a CD rate comparison tool. Look at the rate, the term, and the early withdrawal penalty together—a slightly lower rate with a lower penalty might be better than a high rate with a steep penalty. Also check whether the bank compounds interest daily or monthly, as this affects your actual earnings.

Who should use a CD and when

CDs work best for money you know you will not need for a specific period. If you have a down payment saved for a house purchase in 2 years, a 2-year CD locks in a may provide return. If you have an emergency fund, a CD is not the right place—you need access to that money without penalty.

CDs also make sense when you believe interest rates might fall. If you lock in a 4.5% rate and rates drop to 3%, you are glad you committed. But if rates rise to 5.5%, you will regret it. No one can predict rates reliably, so think of a CD as a way to may provide a return, not to time the market.

People nearing retirement sometimes use CDs to park money they will need in a few years, because the fixed rate removes uncertainty. Young savers with a long time horizon might skip CDs and invest in stocks or bonds instead, since they can tolerate more risk for potentially higher returns.

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 a certain number of months' interest. Some banks offer no-penalty CDs that let you withdraw without a fee, though the rate is typically lower than on traditional CDs.

What is the difference between a CD and a money market account?

A money market account is a hybrid between a savings account and a checking account—you can withdraw money anytime without penalty, but the interest rate is variable and can change monthly. A CD has a fixed rate and a set term, but you cannot withdraw early without a penalty. Money market accounts offer flexibility; CDs offer certainty.

Do I have to pay taxes on CD interest?

Yes. CD interest is taxable income in the year it is earned, even if you do not withdraw it. The bank will send you a 1099-INT form at tax time showing how much interest you earned. If you earned $10 or more in interest, you must report it on your tax return.

What happens if I do nothing when my CD matures?

Most banks automatically renew your CD into a new term at the current rate during a grace period (usually 7 to 10 days). Check your CD agreement to see what your bank does, and set a reminder before maturity so you can decide whether to renew, withdraw, or move the money elsewhere.

Can I open a CD with a very short term, like 1 month?

Some banks offer CDs with terms as short as 1 month, but these are less common and the rates are usually lower than longer-term CDs. Most banks focus on 3-month, 6-month, 1-year, and longer terms. If you want quick access to your money, a high-yield savings account is usually a better choice than a short-term CD.