A certificate of deposit is a savings account where you lock money away for a set time in exchange for a higher interest rate than a regular savings account

When you open a CD, you agree to leave your money untouched until a specific date — called the maturity date. In return, the bank pays you a fixed interest rate that is usually two to five times higher than what you would earn in a standard savings account. The tradeoff is straightforward: you give up access to your money, and the bank gives you better returns.

The bank uses your locked-in money to make loans and investments. Because the bank knows exactly how long it will have your money, it can plan its lending more reliably. That certainty is worth paying you more interest. CDs are also insured by the Federal Deposit Insurance Corporation (FDIC) up to $250,000 per account, per bank, so your principal is protected even if the bank fails.

CDs come in different lengths — typically three months, six months, one year, three years, or five years. The longer you lock your money away, the higher the interest rate usually is. A five-year CD will almost always pay more than a one-year CD at the same bank.

Key Takeaways

  • A CD pays a fixed interest rate in exchange for leaving your money untouched until the maturity date; if you withdraw early, you lose some or all of the interest you earned.
  • Interest rates on CDs are typically higher than savings accounts because the bank can count on having your money for a known period.
  • FDIC insurance protects your principal up to $250,000 per CD at each bank, but does not protect you from early withdrawal penalties.
  • CD rates vary by bank, by term length, and by the amount you deposit; shopping across banks can mean hundreds of dollars in difference over the CD's life.
  • When a CD matures, you can withdraw the money, open a new CD at the current rate, or let the bank automatically renew it at whatever rate it is offering at that time.

How interest rates and term length work together

The interest rate a bank offers on a CD depends on three things: the current interest rate environment set by the Federal Reserve, how long you are locking your money away, and how much you are depositing. When the Federal Reserve raises its benchmark interest rate, banks raise CD rates. When the Fed cuts rates, CD rates fall. This means the best time to lock in a CD rate is when rates are high and expected to drop.

Term length matters because longer commitments carry more risk for you — your money is unavailable for longer, and inflation erodes its purchasing power over time. Banks compensate for this by paying higher rates on longer terms. A one-year CD might pay 4.5%, while a five-year CD at the same bank might pay 5.2%. The difference is small but compounds over time.

Deposit amount also affects the rate. Some banks offer higher rates on larger deposits — for instance, $25,000 or more. Others offer the same rate regardless of amount. Always check the specific terms at the bank you are considering.

What happens when your CD reaches maturity

On the maturity date, you have three choices. You can withdraw the money and the interest you earned, free of penalty. You can open a new CD at the bank's current rate — which may be higher or lower than what you just earned. Or you can do nothing, and the bank will automatically renew your CD at its current offering rate, usually for the same term length.

Automatic renewal is where many people lose money without realizing it. If rates have dropped since you opened your original CD, the renewal rate will be lower. If you do not pay attention to the maturity date, you may lock your money away for another term at a worse rate than you could get elsewhere. Mark your calendar for the maturity date and shop around before it arrives.

Some banks offer a grace period — usually seven to ten days after maturity — during which you can withdraw your money without penalty even though the CD has technically renewed. Check your CD agreement for this detail.

Early withdrawal penalties and when they explore

If you need your money before the maturity date, the bank will let you withdraw it, but you will pay a penalty. The penalty is usually a certain number of months of interest. A CD with a six-month penalty means you lose six months' worth of the interest you would have earned. On a one-year CD paying 4.5% on $10,000, that penalty would be roughly $225.

Some banks calculate the penalty differently — as a percentage of the principal or as a flat fee. Always read the disclosure document before you open a CD so you know exactly what the penalty is. The penalty is not a tax; it is straightforward forfeited interest or a reduction in your principal.

The penalty exists because the bank has already lent out or invested your money based on the assumption it would have it for the full term. If you withdraw early, the bank loses that certainty and may have to liquidate an investment at a loss. The penalty compensates the bank for that disruption.

How CD rates compare across banks and online platforms

CD rates vary significantly by bank. A large national bank might offer 4.0% on a one-year CD, while an online bank might offer 4.8% on the same term. Over one year on $10,000, that difference is $80 — not huge, but real. Over five years, the difference compounds and grows much larger.

Online banks typically offer higher rates than brick-and-mortar banks because they have lower overhead costs. Credit unions sometimes offer competitive rates as well, especially if you are a member. The FDIC insurance limit still applies — $250,000 per account per bank — so opening CDs at multiple banks is a way to protect larger amounts of money.

Rate comparison websites and bank websites themselves show current CD rates, though rates change frequently. When you find a rate you like, you usually have to open the CD within a day or two to lock it in, because rates can shift. Some banks allow you to "rate lock" a CD for a short period before you fund it, but this is not standard.

CDs versus savings accounts and money market accounts

A regular savings account offers lower interest but complete flexibility — you can withdraw money whenever you want without penalty. A money market account sits in the middle: it pays more than a savings account but less than a CD, and it usually allows a few withdrawals per month without penalty. A CD pays the most but locks your money away.

The choice depends on whether you need the money within the CD's term. If you have an emergency fund, a savings account or money market account makes sense because you need access. If you have money you will not need for two years, a two-year CD will pay significantly more. Many people use both: a savings account for emergencies and CDs for money they know they will not touch.

CDs also differ from bonds and stock market investments in that they carry no market risk — your principal is may provide (up to the FDIC limit), and your interest rate is fixed. You will not make as much money as you might in stocks, but you also will not lose your principal if the market drops.

Tax treatment and how interest is reported

Interest you earn on a CD is taxable income in the year you earn it, even if you do not withdraw the money until the CD matures. The bank will send you a Form 1099-INT showing the interest you earned, and you must report it on your tax return. This matters most for longer-term CDs, where interest accrues over years but you do not receive it until maturity.

If you withdraw money early and pay a penalty, you can deduct that penalty from your taxable interest income on your tax return. So if you earned $500 in interest but paid a $200 penalty, you report $300 as taxable income. Keep your CD statements and withdrawal documentation for tax purposes.

Some people use CDs in tax-advantaged accounts like IRAs or 401(k)s to defer taxes on the interest. The rules for these accounts are complex and depend on your age and income, so consult a tax professional if you are considering this approach.

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 several months of interest, though it varies by bank and CD term. Check your CD agreement to see the exact penalty before you open the account. Some banks allow penalty-free withdrawals in specific circumstances, such as the account holder's death, but these are rare.

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

A CD locks your money for a set term and pays higher interest in exchange. A savings account lets you withdraw anytime but pays much lower interest. CDs work best for money you will not need soon; savings accounts work for emergency funds and money you might need quickly.

Are CDs safe if the bank fails?

Yes, up to $250,000 per CD per bank. The FDIC insures your principal and accrued interest. If you have more than $250,000, open CDs at different banks to stay within the insurance limit at each one. The insurance does not cover losses from early withdrawal penalties.

What happens if I do not withdraw my money when the CD matures?

Most banks automatically renew your CD for the same term at their current rate. This rate may be higher or lower than what you were earning. Check your maturity date and shop for better rates before renewal happens, or withdraw the money if you do not want to renew.

Do I have to pay taxes on CD interest?

Yes, CD interest is taxable income in the year you earn it, even if the money stays in the CD. The bank reports it on a Form 1099-INT. If you withdraw early and pay a penalty, you can deduct the penalty from your taxable interest income.