What a certificate of deposit is and how it differs from a savings account
A certificate of deposit (CD) is a savings product where you give a bank or credit union a lump sum of money for a fixed period — typically three months to five years — in exchange for a may provide interest rate. Unlike a regular savings account, you cannot withdraw the money before the maturity date without paying a penalty, usually a portion of the interest you would have earned.
The trade-off is straightforward: you lock up your money, and the bank pays you more interest than it would on a regular savings account. The longer you agree to leave the money untouched, the higher the interest rate typically is. A three-month CD might pay 4.5 percent annual interest, while a five-year CD from the same bank might pay 4.8 percent.
CDs are insured by the Federal Deposit Insurance Corporation (FDIC) if held at a bank, or by the National Credit Union Administration (NCUA) if held at a credit union, up to $250,000 per depositor per institution. This means your principal is protected even if the bank fails.
Key Takeaways
- A CD locks your money for a set term in exchange for a fixed interest rate that is higher than a savings account rate.
- Early withdrawal penalties vary by bank and term length, but typically cost you some or all of the interest earned.
- CD rates change daily and depend on the term length, the bank or credit union, and current market conditions.
- CDs are FDIC or NCUA insured up to $250,000, so your principal is protected if the institution fails.
- You can use a CD ladder — buying multiple CDs with different maturity dates — to access some of your money regularly while earning higher rates.
How interest rates and terms work
When you open a CD, the bank tells you the annual percentage yield (APY) — the actual return you will earn over one year, including compounding. This rate is locked in for the entire term. If you buy a one-year CD at 4.6 percent APY, you will earn 4.6 percent no matter what happens to market rates during that year.
The APY depends on three things: the term length, the bank's current rate sheet, and market conditions. Banks set their own rates, so a one-year CD at Bank A might pay 4.5 percent while Bank B pays 4.7 percent for the same term. Rates also shift with Federal Reserve decisions and economic conditions — they are higher when the Fed raises its benchmark rate and lower when it cuts.
Common term lengths are three months, six months, one year, two years, three years, and five years. Some banks offer terms as short as one month or as long as ten years. Shorter terms usually pay less interest; longer terms usually pay more. The difference between a one-year rate and a five-year rate can be 0.3 to 0.5 percentage points, depending on market conditions.
Early withdrawal penalties and what they cost
If you withdraw money from a CD before the maturity date, you pay an early withdrawal penalty. The penalty amount varies widely by bank and term length. A common structure is a penalty equal to three to six months of interest. On a $10,000 CD earning 4.5 percent APY, six months of interest is about $225, so that would be your penalty.
Some banks use a different formula — a flat dollar amount, a percentage of the principal, or a tiered penalty that gets smaller as you get closer to maturity. Always ask the bank for the exact penalty before you open the CD. It should be in the disclosure document they give you, often called the "Truth in Savings" form.
The penalty is deducted from your CD balance, not from your checking account. If you withdraw early, you get back your principal minus the penalty and any taxes owed on the interest. In some cases, if you withdraw very early, the penalty can exceed the interest earned, meaning you lose part of your original deposit.
When a CD makes sense for your money
A CD works best if you have money you will not need for a known period and you want a may provide return with no risk. Common uses include saving for a down payment on a home in two years, setting aside money for a car purchase in eighteen months, or building an emergency fund while earning more than a savings account offers.
CDs are less useful if you might need the money unexpectedly, because the penalty makes early withdrawal expensive. They are also less useful if you think interest rates will rise significantly, because you will be locked into a lower rate. If rates rise one percent after you buy a one-year CD, you will regret not waiting — but you cannot change your mind without paying a penalty.
CDs are not an investment in the stock market sense. You are not buying ownership of anything or betting on growth. You are lending money to a bank at a fixed rate. The return is modest but certain, and your principal is protected.
How to compare CD rates across banks
CD rates vary enough between banks that shopping around can add hundreds of dollars to your return. A $25,000 CD at 4.5 percent APY earns $1,125 per year; the same CD at 4.8 percent earns $1,200. That $75 difference is real money for doing a few minutes of research.
Online banks typically offer higher rates than brick-and-mortar banks because they have lower overhead costs. A national online bank might offer 5.0 percent on a one-year CD while a local bank offers 4.2 percent. Credit unions sometimes offer competitive rates as well, especially if you are a member.
To compare, visit the websites of several banks and credit unions, note the APY for the term you want, and check the early withdrawal penalty. Websites like Bankrate and DepositAccounts list rates from many institutions in one place, though you should verify the rate on the bank's own website before opening an account. Rates change daily, so a rate you see today may not be available tomorrow.
CD ladders and other strategies
A CD ladder is a way to earn higher CD rates while still having access to some of your money regularly. You buy multiple CDs with different maturity dates — for example, one CD maturing in one year, one in two years, one in three years, and one in four years. As each CD matures, you can withdraw the money or buy a new CD at the current rate.
The advantage is that you earn the higher rates that come with longer terms, but you are not completely locked out of your money. Every year, one CD matures and you can use that money if you need it. If you do not need it, you can buy a new four-year CD, keeping the ladder going.
Another strategy is a bump-up CD, offered by some banks. This CD lets you increase the interest rate once during the term if rates rise. You do not get the higher rate retroactively, but future interest accrues at the new rate. Bump-up CDs usually pay slightly less than regular CDs to account for this option.
Taxes on CD interest
The interest you earn on a CD is taxable income. The bank will send you a 1099-INT form in January showing how much interest you earned during the previous year. You must report this on your federal tax return, and possibly on your state return as well.
The tax is owed in the year the interest is credited to your account, even if you do not withdraw the money. If you buy a one-year CD in December and it matures in December of the following year, you owe tax on the interest in the year it matures, not in the year you bought it.
If you are in a high tax bracket, the after-tax return on a CD may be lower than you expect. A CD paying 4.5 percent APY in a 24 percent combined federal and state tax bracket nets you about 3.4 percent after taxes. This is still better than a savings account, but it is worth calculating before you commit your money.
Frequently Asked Questions
Can I withdraw money from a CD before it matures?
Yes, but you will pay an early withdrawal penalty. The penalty is usually three to six months of interest, though it varies by bank and term length. Ask your bank for the exact penalty before opening the CD so you know what it will cost if you need the money early.
What happens when my CD matures?
When the term ends, the bank notifies you that the CD has matured. You then have a grace period — usually seven to ten days — to decide what to do. You can withdraw the money, buy a new CD at the current rate, or move the money to a savings account. If you do nothing, many banks automatically renew the CD at the current rate for the same term.
Is a CD safer than a savings account?
Both are equally safe in terms of FDIC or NCUA insurance — your money is protected up to $250,000 if the bank fails. The difference is that a CD pays more interest because you agree not to withdraw the money. A savings account is more flexible but pays less.
Can I open a CD with a very small amount of money?
Minimum deposit requirements vary by bank and CD type. Some banks require $500 or $1,000 to open a CD, while others allow $100 or less. Online banks often have lower minimums than traditional banks. Check the bank's website or call to ask about minimums before you apply.
What if interest rates drop after I buy a CD?
You are locked into your rate for the entire term, so a rate drop does not affect you. Your CD will continue to pay the rate you agreed to when you opened it. This is one advantage of CDs — you know exactly what you will earn, regardless of what happens to market rates.