A certificate of deposit is a savings account that locks your money away for a set time in exchange for a higher interest rate

When you open a certificate of deposit (CD), you give a bank or credit union a lump sum of money and agree not to touch it for a specific period — typically three months to five years. In return, the bank pays you a fixed interest rate that is almost always higher than what you would earn in a regular savings account. At the end of the term, you get your original money back plus all the interest it earned.

The trade-off is straightforward: you lose access to your cash for the duration. If you withdraw the money early, the bank charges a penalty that usually wipes out some or all of the interest you earned. This makes CDs useful only if you have money you genuinely will not need for a while and want a may provide return without the risk of the stock market.

Key Takeaways

  • A CD pays a fixed interest rate for a fixed time period, and you cannot withdraw the money without losing interest to an early withdrawal penalty.
  • CD rates are higher than savings accounts because you are giving up access to your money, and the bank can lend it out for the full term.
  • The longer the term, the higher the rate — a five-year CD pays more than a three-month CD, but your money is locked away longer.
  • When your CD matures, you can cash it out, renew it for another term at the current rate, or move the money elsewhere.
  • CDs are insured by the FDIC (at banks) or NCUA (at credit unions) up to $250,000, so your principal is protected even if the institution fails.

How CD interest rates and terms work

Banks set CD rates based on what the Federal Reserve is doing with short-term interest rates. When the Fed raises rates, new CDs pay more. When the Fed cuts rates, new CDs pay less. The rate you lock in on the day you open the CD stays the same for the entire term — you do not benefit if rates go up, and you do not suffer if they fall.

Term length is the other half of the equation. A three-month CD might pay 4.5 percent, while a one-year CD from the same bank pays 4.8 percent, and a five-year CD pays 5.2 percent. Banks offer higher rates for longer terms because they want to keep your money longer and can plan their lending further ahead. The downside is that your money is locked away for five years instead of three months.

Some banks offer no-penalty CDs, which let you withdraw your money early without losing interest. These sound appealing but pay lower rates than standard CDs because the bank is taking on more risk. You are essentially paying for the flexibility by accepting a smaller return.

What happens when your CD reaches maturity

When your term ends, the CD matures. You then have a few options. You can withdraw the full amount — your original deposit plus all the interest — and move it to a savings account, another CD, or anywhere else. You can also let the bank automatically renew the CD for another term at whatever the current rate is (which may be higher or lower than what you were earning). Most banks give you a grace period of seven to ten days to decide what to do before they automatically renew.

If you do nothing and the bank auto-renews, you are locked in for another term at the new rate. If rates have fallen significantly, you may end up earning much less. For this reason, it is worth setting a calendar reminder a week before your CD matures so you can decide whether to renew or move your money.

Early withdrawal penalties and when they explore

If you need your money before the CD matures, 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 CD with a three-month penalty means you lose three months' worth of the interest you earned. On a $10,000 CD earning 5 percent annually, that is roughly $125 in lost interest.

Some banks calculate the penalty differently, charging a flat fee or a percentage of your deposit. Always check the CD's terms before you open it so you know exactly what you would lose if an emergency forces you to withdraw early. If you think there is any chance you will need the money, a regular savings account or money market account is safer, even if the rate is lower.

CD laddering: a strategy to balance rate and access

Many people use a technique called CD laddering to get higher rates while still having access to some of their money regularly. Instead of putting all your money into one five-year CD, you split it into five one-year CDs. Each year, one CD matures and you can withdraw that money or renew it. This way, you are earning rates closer to the five-year rate, but you have access to a portion of your money every year.

For example, if you have $50,000, you could open five $10,000 CDs with one-year terms, all on the same day. In year one, the first CD matures and you can use that $10,000. In year two, the second CD matures, and so on. If rates have risen, you can renew each maturing CD at the new higher rate. If you do not need the money, you can renew it and keep the ladder going.

CDs versus savings accounts and money market accounts

A regular savings account is more flexible but pays much less interest — often 0.01 percent or lower at big banks, compared to 4 or 5 percent for a CD. You can withdraw from a savings account anytime without penalty, which is why the rate is so low. A money market account sits in the middle: it pays more than a savings account (usually 4 to 5 percent) but less than a CD, and you can withdraw your money without penalty, though there are limits on how many withdrawals you can make per month.

If you know you will not need the money for at least a year and want the highest may provide return, a CD is the right choice. If you might need the money sooner or want to keep it accessible, a money market account is a better fit. If you need the money available at any moment, stick with a savings account and accept the lower rate.

FDIC and NCUA insurance protects your CD

When you open a CD at a bank, your deposit is insured by the FDIC (Federal Deposit Insurance Corporation) up to $250,000. If the bank fails, the FDIC guarantees you will get your money back. At a credit union, the same protection comes from the NCUA (National Credit Union Administration), also up to $250,000 per account.

This insurance covers your principal — the money you deposited — plus any interest you earned. It does not cover losses from market downturns (because CDs do not invest in the market) or penalties you paid for early withdrawal. The insurance applies per depositor, per institution, so if you have multiple CDs at the same bank, they all count toward your $250,000 limit.

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 several months of interest. Check your CD's terms to know the exact amount before you open it. No-penalty CDs exist but pay lower rates.

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

A CD locks your money for a set term and pays a much higher interest rate in return. A savings account lets you withdraw anytime but pays very little interest. Choose a CD if you have money you will not need for months or years; choose a savings account if you need access to your cash.

Do I have to renew my CD when it matures?

No. When your term ends, you can withdraw the money, move it to another bank, or renew it for another term. Most banks auto-renew if you do nothing, so check your maturity date and decide what you want to do before that happens.

Are CDs a good investment if inflation is high?

CDs protect your money from loss, but if inflation is higher than your CD rate, your money loses purchasing power over time. A CD paying 4 percent when inflation is 5 percent means you are effectively losing 1 percent in real value each year. In high-inflation periods, CDs are safer than stocks but do not keep pace with rising costs.

What happens if the bank goes out of business?

The FDIC or NCUA insures your CD up to $250,000, so you will get your money back even if the bank fails. This protection is automatic — you do not need to do anything. If your CD is larger than $250,000, only that amount is covered.