A Certificate of Deposit Locks Your Money for a Set Time at a Fixed Rate

A certificate of deposit (CD) is a savings product where you give a bank or credit union a lump sum of money and agree to leave it untouched for a specific period—called the term. In exchange, the institution pays you a fixed interest rate, which is almost always higher than what you'd earn in a regular savings account. The bank knows exactly how long it will hold your money, so it can offer you better terms.

The defining feature is the lock-in period. You choose the term when you open the CD—typically three months, six months, one year, three years, or five years. During that time, your money sits in the account earning interest. When the term ends, you get back your original deposit plus all the interest you earned. If you withdraw the money before the term ends, the bank charges you a penalty, usually a certain number of months' worth of interest.

Key Takeaways

  • A CD requires you to deposit a fixed amount and leave it untouched for a set period, ranging from three months to five years or longer.
  • The interest rate on a CD is fixed for the entire term, so you know exactly how much you will earn before you open the account.
  • Early withdrawal penalties are standard and typically cost you several months of interest, making CDs unsuitable for money you might need soon.
  • When your CD term ends, you can withdraw your money, renew the CD at the current rate, or move the funds elsewhere.
  • CDs are insured by the FDIC (at banks) or NCUA (at credit unions) up to $250,000 per account, making them very low-risk.

Fixed Interest Rate That Does Not Change

When you open a CD, the bank tells you the exact interest rate you will earn for the entire term. This rate does not move, even if the Federal Reserve raises or lowers interest rates while your CD is active. If you lock in a 4.5% rate on a two-year CD, you earn 4.5% for those two years, period.

This predictability is one reason people choose CDs over stocks or bonds. You are not guessing whether the market will go up or down. You know the return in advance. The tradeoff is that if interest rates rise sharply after you open your CD, you cannot move your money to a higher-paying account without paying the early withdrawal penalty.

A Minimum Deposit Amount

Most banks and credit unions require a minimum opening deposit to start a CD. This minimum varies widely—some institutions accept $500, while others require $2,500 or $10,000. A few online banks have minimums as low as $100 or even $1. Check the specific institution's requirements before you decide where to open your CD.

The minimum deposit is separate from any interest you earn. If you deposit $5,000 at 4% interest for one year, you put in $5,000 and the bank adds roughly $200 in interest. You cannot withdraw part of the $5,000 during the term without triggering the early withdrawal penalty.

An Early Withdrawal Penalty

If you need your money before the CD term ends, the bank will let you take it out—but you will pay a penalty. The penalty is usually expressed as a number of months of interest. A common penalty is three months of interest, meaning if your CD would have earned $200 in interest over the full term, you lose $50 (three months' worth) when you withdraw early.

Some CDs have higher penalties, especially longer-term CDs. A five-year CD might have a penalty of six months or even a year of interest. Before you open a CD, read the disclosure document to see what the penalty is. If you think you might need the money within the term, a CD with a lower penalty or a shorter term might be a better fit.

A Maturity Date When the Term Ends

Every CD has a specific maturity date—the day the term ends and your money becomes available without penalty. If you open a one-year CD on January 15, 2025, it matures on January 15, 2026. On that date, you can withdraw your principal plus interest, or you can let the bank automatically renew the CD at whatever the current rate is.

Most banks automatically renew CDs at maturity unless you tell them not to. This renewal happens at the interest rate in effect on the maturity date, which may be higher or lower than your original rate. If you do not want to renew, contact your bank before the maturity date and request a withdrawal. Some banks give you a grace period—usually 7 to 10 days after maturity—to change your mind without penalty.

FDIC or NCUA Insurance Protection

CDs held at banks are insured by the FDIC (Federal Deposit Insurance Corporation) up to $250,000 per depositor, per bank. CDs at credit unions are insured by the NCUA (National Credit Union Administration) with the same $250,000 limit. This insurance covers your principal and accrued interest if the institution fails.

The insurance limit applies per institution, so if you have CDs at two different banks, each account is covered separately up to $250,000. This makes CDs one of the safest places to keep money—you are not exposed to market risk or institution failure the way you would be with stocks or bonds.

Options at Maturity

When your CD matures, you have three main choices. First, you can withdraw the full amount (principal plus interest) and move the money to a savings account, another CD, or somewhere else entirely. Second, you can let the bank automatically renew the CD into a new term at the current rate. Third, some banks offer a "CD ladder" strategy where you open multiple CDs with different maturity dates so money becomes available at regular intervals.

If you choose to renew, pay attention to the new rate. If rates have dropped significantly, you might prefer to move your money to a higher-paying account. If rates have risen, renewing locks in a better rate. Banks are required to disclose the new rate before the renewal happens, so you have time to decide.

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 typically several months of interest. Some banks offer "no-penalty CDs" with lower rates but no penalty for early withdrawal. Check your CD's terms before opening it if you think you might need the money sooner.

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

Most banks automatically renew your CD into a new term at the current interest rate. You usually have a grace period of 7 to 10 days after maturity to withdraw without penalty if you do not want to renew. Contact your bank before the maturity date if you want to avoid automatic renewal.

Is a CD a good place to keep emergency savings?

CDs work best for money you will not need for several months or longer. Because of the early withdrawal penalty, they are not ideal for true emergency funds. A high-yield savings account offers nearly the same interest rate with no penalty and when ready access to your money.

Do I pay taxes on CD interest?

Yes. The interest you earn on a CD is taxable income in the year you earn it, even if you do not withdraw the money. Your bank will send you a 1099-INT form at tax time showing how much interest you earned. This is one reason CDs in retirement accounts like IRAs can be useful—the interest grows tax-deferred.

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 a lower interest rate. A CD locks your money for a set term and pays a higher rate, but you lose interest if you withdraw early. Choose a CD if you have money you will not need for months; choose a savings account if you want flexibility.