A CD is a savings account where you agree to leave money untouched for a set time in exchange for a higher interest rate

A certificate of deposit (CD) is a contract between you and a bank or credit union. You give them a lump sum of money, they promise to pay you a fixed interest rate, and you agree not to withdraw that money until a specific date arrives. That date is called the maturity date. When it arrives, you get your original money back plus the interest earned.

The trade-off is simple: banks pay you more interest on a CD than they do on a regular savings account because they know exactly how long they can use your money. In return, you lose access to that cash. If you withdraw before the maturity date, you pay a early withdrawal penalty — usually a few months' worth of interest, though the exact amount varies by bank and CD term.

CDs come in different lengths. You might choose a 3-month CD, a 1-year CD, a 5-year CD, or anything in between. The longer you lock your money away, the higher the interest rate typically is. A 5-year CD will usually pay more than a 1-year CD from the same bank.

Key Takeaways

  • A CD requires you to deposit a fixed amount and leave it untouched until a maturity date you choose at the start.
  • Interest rates on CDs are higher than regular savings accounts because the bank knows exactly when you will withdraw.
  • Withdrawing before the maturity date costs you an early withdrawal penalty, typically several months of interest.
  • Longer CD terms (like 5 years) usually offer higher interest rates than shorter ones (like 3 months).
  • CDs are insured by the FDIC (at banks) or NCUA (at credit unions) up to $250,000 per account owner per institution.

How the interest rate and term length work together

When you open a CD, the bank tells you the annual percentage yield (APY) — that is the interest rate you will earn over one year, expressed as a percentage. That rate is locked in for the entire term. If you open a 2-year CD at 4.5% APY, you will earn 4.5% per year for both years, even if interest rates in the market drop to 2%.

The term length you choose depends on when you think you will need the money. If you know you will not touch the money for five years, a 5-year CD might make sense because it usually pays more. If you might need the cash in two years, a 2-year CD is safer — you avoid the penalty and still earn more than a savings account. If you are unsure, a shorter term like 3 or 6 months lets you reassess sooner.

Some banks offer no-penalty CDs, which let you withdraw early without paying a penalty. The trade-off is that these CDs pay lower interest rates than traditional CDs with the same term. They exist for people who want CD-like rates but need more flexibility.

What happens when your CD reaches maturity

On the maturity date, the bank will contact you with options. You can withdraw the money (principal plus interest), or you can renew the CD — roll it into a new CD for another term at whatever the current interest rate is. If you do nothing, many banks automatically renew your CD, though some will move the money to a regular savings account instead. Check your CD agreement to know what your bank does.

If interest rates have risen since you opened your CD, renewal at the new rate might be attractive. If rates have fallen, you might choose to withdraw and move the money elsewhere. This is one reason shorter-term CDs can be useful: they mature more often, giving you more chances to reassess your strategy.

The early withdrawal penalty and when it matters

If you need the money before maturity, you will pay a penalty. The penalty amount is set when you open the CD and is usually expressed in months of interest. A CD might have a penalty of "three months' interest" or "six months' interest." On a $10,000 CD earning 4% APY, three months of interest is about $100, so that would be your penalty.

The penalty comes out of 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 rare with longer CDs but can happen if you withdraw very early from a short-term CD.

Because of this penalty, CDs work best for money you genuinely will not need. If there is any chance you might need the cash within the term, a regular savings account or money market account is safer, even if the interest rate is lower.

FDIC and NCUA insurance on CDs

Money in a CD at a bank is insured by the Federal Deposit Insurance Corporation (FDIC) up to $250,000 per depositor per bank. Money in a CD at a credit union is insured by the National Credit Union Administration (NCUA) up to the same amount. This means if the bank or credit union fails, you get your money back, up to that limit.

The $250,000 limit applies per institution, not per CD. If you have three CDs at the same bank totaling $300,000, only $250,000 is insured. If you want to insure more, you can open CDs at different banks — each bank's $250,000 limit is separate.

CDs versus savings accounts and money market accounts

A regular savings account has no maturity date and no penalty for withdrawal. You can take money out whenever you want. The trade-off is that savings accounts pay lower interest rates than CDs. A savings account might pay 0.5% APY while a CD pays 4% or more.

A money market account sits between the two. It usually pays more than a savings account but less than a CD. It may have withdrawal limits (often six per month) but no maturity date and no early withdrawal penalty. Money market accounts work well if you want higher interest than savings but need more flexibility than a CD offers.

The choice depends on your timeline and your comfort with locking money away. If you have an emergency fund, keep it in a savings account where you can reach it instantly. If you have money you will not need for years, a CD usually pays more. If you are somewhere in between, a money market account might fit.

How to compare CDs across banks

Different banks offer different rates on the same CD term. A 1-year CD at one bank might pay 3.5% APY while another pays 4.2%. Over a year, that difference adds up. Websites that track CD rates (such as Bankrate, DepositAccounts, or your bank's own website) let you see what different institutions are offering.

When comparing, look at the APY, not just the interest rate — APY accounts for how often interest is compounded and gives you the true annual return. Also check the minimum deposit required (some CDs require $500, others $25,000) and the early withdrawal penalty. A slightly higher rate is not worth it if the penalty is much steeper or the minimum deposit is too high for your situation.

Online banks often pay higher CD rates than brick-and-mortar banks because they have lower overhead costs. The trade-off is that you cannot walk into a branch to ask questions. Both online and traditional banks are FDIC-insured, so safety is the same.

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 when you open the CD. The penalty is usually several months of interest. Some banks offer no-penalty CDs that let you withdraw without a fee, though they pay lower rates than traditional CDs.

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

A CD locks your money for a set term and pays a higher interest rate. A savings account has no maturity date, no penalty for withdrawal, and a lower interest rate. Choose a CD if you will not need the money; choose a savings account if you might need it soon.

Do I have to renew my CD when it matures?

No. When your CD matures, you can withdraw the money, renew it into a new CD at the current rate, or move it elsewhere. Some banks automatically renew unless you tell them not to, so check your agreement.

Is my money safe in a CD?

Yes, up to $250,000 per bank or credit union. CDs are insured by the FDIC (at banks) or NCUA (at credit unions). If the institution fails, you get your principal and interest back up to that limit.

What happens if interest rates drop after I open a CD?

Your rate stays the same for the entire term — that is the point of a CD. You are locked in at the rate you agreed to when you opened it, which protects you if rates fall but also means you miss out if rates rise.