A CD locks your money for a set time in exchange for a may provide interest rate

A Certificate of Deposit (CD) is a savings account where you agree to leave money untouched for a specific period — usually three months to five years — and the bank pays you a fixed interest rate in return. You know exactly how much interest you will earn before you deposit a single dollar. If you withdraw the money early, you pay a penalty, usually a portion of the interest you would have earned.

The trade-off is straightforward: you give up access to your cash, and the bank gives you a higher interest rate than a regular savings account. The longer you lock the money away, the higher the rate typically is. A three-month CD might pay 4.5 percent annually, while a five-year CD from the same bank might pay 5.2 percent.

CDs are FDIC-insured at most banks, meaning if the bank fails, the federal government guarantees your deposit up to $250,000. This makes them one of the safest places to put money that you do not need right away.

Key Takeaways

  • You deposit a lump sum and agree not to touch it until the CD matures; in exchange, you receive a fixed interest rate that does not change.
  • Early withdrawal penalties typically cost you some or all of the interest you would have earned, so CDs work best for money you truly will not need.
  • Interest rates vary by bank and by term length, so comparing offers across institutions can add hundreds of dollars to your return.
  • When a CD matures, the bank returns your original deposit plus all earned interest, and you can then withdraw it, spend it, or buy another CD.
  • FDIC insurance protects your deposit up to $250,000 per bank, per account type, so very large deposits may need to be split across multiple banks.

How the interest rate and term length work together

The term is how long you commit to leaving your money in the CD. Common terms are 3 months, 6 months, 1 year, 2 years, 3 years, and 5 years. Some banks offer terms as short as 1 month or as long as 10 years. The longer the term, the higher the interest rate almost always is, because the bank knows it will have your money for longer and can lend it out with more certainty.

The interest rate is what the bank pays you, expressed as an annual percentage. If you deposit $10,000 in a one-year CD at 4.75 percent, you will earn $475 in interest over that year (before any taxes). That $475 is added to your account, and when the CD matures, you receive $10,475 total.

Interest rates change constantly based on what the Federal Reserve does and what other banks are offering. A CD you buy at 5.0 percent will still pay 5.0 percent even if rates drop to 3.0 percent next month. That is the may provide. But if rates rise to 6.0 percent, your CD still pays only 5.0 percent — you cannot change the rate mid-term.

What happens when your CD matures

When the term ends, your CD matures. The bank automatically adds all the interest you earned to your account. You now have access to the full amount — your original deposit plus interest — with no penalty.

At maturity, you have a few options. You can withdraw the money entirely. You can leave it in the account and let the bank automatically roll it into a new CD at whatever the current rate is (called an auto-renewal). Or you can move it to a different bank or account type. Most banks give you a window of 7 to 10 days after maturity to make this choice before they auto-renew.

If you do nothing and the bank auto-renews, you are locked in again for the same term at the new rate. If rates have dropped, this might not be what you want. If rates have risen, you may have missed out. Reading the maturity notice from your bank is important so you can decide before the important date.

Early withdrawal penalties and when they explore

If you need the money before the CD matures, you can withdraw it, but you will pay a penalty. The penalty is usually stated as a number of months of interest. A CD might have a penalty of "three months of interest" or "six months of interest." If your CD would have earned $100 in interest over the full term, and the penalty is three months of interest, you lose $25 (three months' worth).

Some CDs have higher penalties than others. A short-term CD (3 or 6 months) might have a penalty of 1 month of interest. A longer-term CD (5 years) might have a penalty of 6 months or even 12 months of interest. Always read the CD's terms before you buy it so you know what the penalty is.

The penalty comes out of your interest, not your original deposit. So if you withdraw early, you get all your money back, but you lose some or all of the interest you would have earned. In rare cases, if you withdraw very early from a long-term CD, the penalty could exceed the interest earned so far, and you would lose a small amount of your principal.

How CD rates compare across banks and terms

Banks compete for CD deposits by offering different rates. On any given day, one bank might offer 4.8 percent for a one-year CD while another offers 5.2 percent for the same term. Over a year, that 0.4 percent difference adds up. On a $10,000 deposit, 4.8 percent earns $480, while 5.2 percent earns $520 — a $40 difference on the same amount of money.

Online banks typically offer higher rates than brick-and-mortar banks because they have lower overhead costs. A national bank with many physical branches might offer 4.5 percent, while an online-only bank offers 5.3 percent for the same term. Credit unions sometimes offer competitive rates as well, though you must be a member to open a CD there.

Rates also vary by term. A bank might offer 4.6 percent for a six-month CD, 4.9 percent for a one-year CD, and 5.1 percent for a two-year CD. The curve is not always smooth — sometimes a longer term does not pay more than a shorter one, depending on what the bank expects interest rates to do.

FDIC insurance and deposit limits

Most CDs at banks are insured by the Federal Deposit Insurance Corporation (FDIC). This means if the bank fails, the government guarantees you will get your money back, up to $250,000 per depositor, per bank, per account type. Your CD principal and all earned interest are covered together under this limit.

If you have $250,000 or more to deposit, you can split it across multiple banks to keep everything insured. For example, you could put $250,000 in a CD at Bank A and $250,000 in a CD at Bank B, and both would be fully insured. Different account types at the same bank also have separate insurance limits — a CD in your individual name and a CD in a joint account are insured separately.

CDs at credit unions are insured by the National Credit Union Administration (NCUA) under the same $250,000 limit. CDs at brokerage firms are not FDIC-insured, though some brokerages hold CDs from multiple banks and spread deposits to keep everything insured. Always confirm the insurance status before you open a CD.

CD ladders and how to use them

A CD ladder is a strategy where you buy multiple CDs with different maturity dates so that money becomes available at regular intervals. For example, you might buy five one-year CDs, each with $2,000, but stagger the start dates so one matures every few months. As each one matures, you can withdraw the money, spend it, or buy a new CD at the current rate.

CD ladders solve two problems at once. First, they give you regular access to some of your money without early withdrawal penalties. Second, they let you take advantage of rate changes. If rates rise, you can reinvest the maturing CD at the higher rate. If rates fall, you still have other CDs earning the old, higher rate.

A ladder works best when you have a lump sum to invest and you want to balance safety with flexibility. Instead of locking everything away for five years, you spread it across multiple terms and get a portion back regularly.

Frequently Asked Questions

Can I add more money to a CD after I open it?

No. A CD is a fixed deposit — you choose the amount when you open it, and that amount stays the same until maturity. If you want to invest more money, you must open a separate CD. Some banks let you open multiple CDs at once with different amounts.

What happens to my interest if I withdraw early?

You lose some or all of the interest you would have earned, depending on the early withdrawal penalty. Your original deposit is returned in full. The penalty is calculated based on how early you withdraw and what the CD's terms state.

Is the interest I earn on a CD taxable?

Yes. CD interest is taxable income in the year it is earned or credited to your account. The bank will send you a 1099-INT form at tax time showing how much interest you earned. You report this on your tax return.

Should I buy a CD if interest rates are falling?

If you believe rates will fall, locking in the current rate protects you from lower rates later. If you think rates will rise, you might wait or use a CD ladder so you are not locked in at a low rate for a long time. Your own timeline and cash needs matter more than predicting rates.

Can I move a CD to a different bank before it matures?

You can withdraw the money and move it, but you will pay the early withdrawal penalty. You cannot transfer the CD itself to another bank. If the penalty is steep, it might not be worth moving unless rates have risen significantly.