What a Certificate of Deposit Is and Why Banks Offer Them

A certificate of deposit (CD) is an agreement between you and a bank: you give the bank a lump sum of money for a set period of time, and the bank pays you a fixed interest rate on that money. When the time period ends, you get your original money back plus the interest earned. The catch is that you cannot withdraw the money before that date without paying a penalty — usually a loss of some or all of the interest you would have earned.

Banks offer CDs because they want to know how long they can hold onto your money. When you lock in funds for six months or five years, the bank can lend that money out with confidence. In return, they pay you more interest than a regular savings account would. The longer you agree to leave your money untouched, the higher the interest rate typically is.

CDs are insured by the Federal Deposit Insurance Corporation (FDIC) up to $250,000 per depositor per bank, which means your money is protected if the bank fails. This safety, combined with a may provide rate, makes CDs appealing to people who do not want to risk their money in stocks or other investments but want better returns than a savings account offers.

Key Takeaways

  • A CD locks your money away for a set term — typically three months to five years — in exchange for a fixed interest rate higher than a savings account.
  • If you withdraw money before the term ends, you pay an early withdrawal penalty that usually erases most or all of the interest you earned.
  • Interest rates on CDs vary by bank, term length, and the current economic environment, so comparing offers across banks can add hundreds of dollars to your return.
  • CDs work best for money you will not need during the term and want to protect from market risk while earning a predictable return.
  • Your CD is insured up to $250,000 by the FDIC, so your principal is safe even if the bank fails.

How Interest Rates and Terms Work

CD interest rates are set by each bank and change based on what the Federal Reserve does with its benchmark interest rate. When the Fed raises rates, banks typically raise CD rates too — and when the Fed cuts rates, CD rates fall. This means the rate you see today may not be available next month, and shopping around matters.

Terms range from as short as three months to as long as five or ten years, though three months to two years are most common. A longer term usually means a higher interest rate, but it also means your money is locked away longer. A three-month CD might pay 4.5 percent, while a two-year CD from the same bank might pay 5.2 percent. The difference compounds over time, but only if you can afford to leave the money untouched.

Interest can be paid monthly, quarterly, or at maturity — when the CD term ends. Some banks let you choose. If interest is paid before maturity, you can either withdraw it or reinvest it. When the CD matures, the bank will either return your money and interest, or automatically roll it into a new CD at the current rate unless you tell them otherwise.

Early Withdrawal Penalties and When They explore

The penalty for withdrawing money before the CD matures is set by the bank when you open the account. It is typically stated as a number of months of interest — for example, "three months of interest" or "six months of interest." If you have a $10,000 CD earning 5 percent annually and the penalty is three months of interest, withdrawing early costs you about $125.

The penalty is taken from your interest earnings first. If you have not earned enough interest yet to cover the penalty, the bank takes the difference from your principal — meaning you get back less than you deposited. This is why early withdrawal is most costly in the first few months of a CD term.

Some banks offer "no-penalty CDs" that let you withdraw without a penalty, but they pay lower interest rates in exchange. These make sense if you are not certain you can leave the money alone, but they defeat the main purpose of a CD — earning a higher rate in exchange for locking money away. A no-penalty CD paying 4.0 percent is not much better than a savings account paying 4.25 percent.

CD Ladders and How to Manage Multiple CDs

A CD ladder is a strategy where you open multiple CDs with different maturity dates. For example, you might open five $2,000 CDs maturing in one, two, three, four, and five years. Each year, one CD matures, and you can either withdraw the money or reinvest it in a new five-year CD. This approach gives you regular access to some of your money while keeping most of it locked in at higher rates.

Laddering works because it balances two competing needs: earning higher rates on longer terms while maintaining some liquidity. Without a ladder, you either tie all your money up for years or settle for shorter terms and lower rates. A ladder lets you do both.

You can also use a ladder to manage interest rate risk. If rates are currently high, locking in a five-year CD makes sense. If rates are low, you might prefer shorter terms so your money matures sooner and you can reinvest at higher rates if they rise. A ladder hedges this bet by spreading your money across multiple maturity dates.

Comparing CDs Across Banks and Online Platforms

CD rates vary significantly between banks. A brick-and-mortar bank might offer 4.0 percent on a one-year CD, while an online bank offers 5.1 percent on the same term. Over one year, that 1.1 percent difference adds up to $110 per $10,000 deposited. Over five years, the gap widens because of compounding.

Online banks typically offer higher rates than traditional banks because they have lower overhead costs. Credit unions sometimes offer competitive rates too, especially if you are a member. Comparing rates across at least three to five institutions takes 15 minutes and can save you hundreds of dollars.

When comparing, check the annual percentage yield (APY), not just the interest rate. APY accounts for how often interest is compounded and gives you the true return. Also confirm the FDIC insurance limit — most banks insure up to $250,000, but if you are depositing more, you may need to split funds across multiple banks or use a CD brokerage service that spreads your money across insured accounts.

Tax Implications and Reporting

Interest earned on a CD is taxable income in the year it is earned, even if you do not withdraw it. If your CD pays interest monthly or quarterly, you owe taxes on that interest each year. If interest is paid at maturity, you owe taxes in the year the CD matures. The bank will send you a 1099-INT form reporting the interest, which you include on your tax return.

This matters because it reduces your actual return. If you earn $500 in CD interest and you are in the 22 percent tax bracket, you owe $110 in federal taxes, leaving you with $390 in actual gain. This is why CDs in tax-advantaged accounts like IRAs can be valuable — the interest grows tax-deferred.

Some states tax CD interest at the state level too. If you live in a state with income tax, factor that into your comparison. A CD paying 5.0 percent in a state with 5 percent income tax nets you less than one paying 4.8 percent in a state with no income tax.

When a CD Makes Sense and When It Does Not

CDs work best for money you will not need for a specific period and want to protect from market risk. If you are saving for a down payment due in two years, a two-year CD locks in a may provide return. If you have an emergency fund that needs to stay accessible, a CD is the wrong choice — you need a savings account instead.

CDs also make sense when interest rates are high. If the Fed has raised rates and CD rates are at 5 percent or higher, locking in that rate for a few years protects you if rates fall later. If rates are low and expected to rise, shorter-term CDs or a savings account may be better because your money will mature sooner and you can reinvest at higher rates.

CDs do not make sense if you might need the money before the term ends, if you are trying to beat inflation over a long period (stocks historically outpace inflation and CD rates), or if you are in a very high tax bracket and the after-tax return is too low to matter. For most people, CDs are one tool among several — useful for part of your savings but not the whole strategy.

Frequently Asked Questions

What happens to my CD when it matures?

The bank will either return your principal and interest to your account, or automatically roll it into a new CD at the current rate. Check your CD agreement to see what your bank does by default. You can usually call or log in online to choose a different option — withdraw the money, move it to a savings account, or open a new CD with a different term.

Can I open a CD with money from another CD?

Yes. When your CD matures, you can when ready open a new one at the same bank or move the money to a different bank for a better rate. There is no rule against this, and shopping for better rates when your CD matures is a normal part of managing your money.

Is a CD better than a savings account?

A CD typically pays more interest, but only if you can leave the money untouched for the full term. If you might need the money, a savings account is safer because you can withdraw anytime without penalty. If you are certain you will not touch the money, a CD's higher rate makes it the better choice.

What if interest rates drop after I open my CD?

You keep the rate you locked in when you opened the CD. This is the advantage of a CD — your rate does not change, even if the bank's rates fall. If rates rise, you are stuck with your lower rate unless you withdraw early and pay the penalty.

Can I use a CD in a retirement account?

Yes. You can open a CD inside an IRA or other retirement account. The advantage is that interest grows tax-deferred, so you do not owe taxes on the earnings until you withdraw from the account. This can make a CD in a retirement account more valuable than one in a regular account.