A certificate of deposit is a savings account where you agree to leave money untouched for a set period in exchange for a higher interest rate than a regular savings account

When you open a CD, you deposit a lump sum — anywhere from $500 to $100,000 depending on the bank — and commit to leaving it there for a fixed term. That term might be three months, six months, one year, three years, or five years. In return, the bank pays you a fixed interest rate that is locked in from day one. You know exactly how much money you will have when the term ends.

The trade-off is access. If you need the money before the term is up, you pay an early withdrawal penalty — usually a few months' worth of interest. That penalty is real money out of your pocket, so a CD only makes sense if you genuinely will not need the funds during the term.

CDs are FDIC insured up to $250,000 per depositor per bank, which means your money is protected even if the bank fails. This makes them one of the safest places to park cash, though the interest rate is lower than what you might earn in the stock market or a high-yield savings account.

Key Takeaways

  • You deposit a fixed amount and leave it untouched for a set term — typically three months to five years — in exchange for a may provide interest rate.
  • The interest rate on a CD is higher than a regular savings account but lower than stocks or bonds, and it does not change during the term.
  • Withdrawing money early triggers a penalty that usually costs you several months of interest, so only open a CD if you will not need the cash.
  • Your CD is FDIC insured up to $250,000, so your principal and earned interest are protected if the bank fails.
  • CD rates vary by bank and term length, and you can shop around before committing — rates change daily but lock in once you open the account.

How the interest rate works and when you get paid

When you open a CD, the bank quotes you an annual percentage yield (APY). This is the total return you will earn over one year, expressed as a percentage. If you open a one-year CD at 4.5% APY with $10,000, you will have $10,450 at maturity — assuming you do not touch it.

For shorter terms, the math is proportional. A six-month CD at 4.5% APY earns half that amount. A three-month CD earns one-quarter. The bank calculates the exact daily interest and either pays it to you at maturity or deposits it into a linked account, depending on the bank's rules.

Interest rates on CDs change constantly. The rate you see one day will not be the same the next week. Once you open a CD, your rate is locked in for the entire term — it will not go up if rates rise, and it will not go down if rates fall. This is why timing matters: if you think rates are about to drop, locking in now protects you. If you think rates will rise, you might wait.

Early withdrawal penalties and what they cost you

The penalty for cashing out early varies by bank and by CD term. A common structure is a penalty equal to three to six months of interest. On a $10,000 CD earning 4.5% APY, that could be $112 to $225 out of your pocket.

Some banks charge a flat dollar amount instead — say $25 or $50 — which is less painful on small CDs but still a real cost. A few banks charge a percentage of the principal, which can be steep. Before you open a CD, read the disclosure document and know the exact penalty. Do not assume it is small.

The penalty is deducted from your balance when you withdraw. If you withdraw early and the penalty exceeds the interest you have earned, you get back less than you deposited. This is why a CD is not a good fit for money you might need in an emergency.

CD ladders and how to access your money without penalties

A CD ladder is a strategy where you open multiple CDs with different maturity dates. For example, you might open five one-year CDs, each maturing in a different year. Every year, one CD matures and you can withdraw the money penalty-free. You then open a new five-year CD with those funds, and the ladder continues.

This approach gives you regular access to cash without penalties while still locking in higher rates on most of your money. It requires discipline — you have to actually open new CDs when old ones mature — but it solves the liquidity problem that makes CDs risky for people who are not certain they can leave money alone.

Another option is a no-penalty CD, which lets you withdraw your money early without a penalty. The trade-off is a lower interest rate than a standard CD. These are useful if you want the safety and may provide rate of a CD but need flexibility.

Where rates differ and how to find the best one

CD rates vary significantly by bank. A large national bank might offer 3.5% APY on a one-year CD, while an online bank offers 4.75% on the same term. Over one year, that 1.25% difference adds up to real money. On a $10,000 CD, it is the difference between $350 and $475 in interest.

Online banks and credit unions typically offer higher rates than brick-and-mortar banks because they have lower overhead costs. However, they are still FDIC insured, so your money is equally safe. The downside is you cannot walk into a branch to ask questions or make changes in person.

Rates also vary by term. A one-year CD might pay 4.5% while a five-year CD pays 4.2%, or vice versa. The relationship between short-term and long-term rates changes based on economic conditions. Before you commit, compare rates across several banks and terms. Most banks let you see their rates online without opening an account.

What happens when your CD matures

When your CD term ends, the bank sends you a notice — usually 10 to 30 days before maturity. At that point, you have a choice: withdraw the money, or let it roll over into a new CD at the bank's current rate.

If you do nothing, many banks automatically renew your CD at whatever rate they are offering that day. This can work in your favor if rates have risen, but it can hurt you if rates have fallen. Read the maturity notice carefully and decide whether to renew or move your money elsewhere.

If you withdraw at maturity, the bank deposits the principal plus all earned interest into your linked account, usually within one to two business days. There is no penalty for withdrawing at maturity — only for withdrawing early.

CDs versus other savings options

A high-yield savings account offers a lower interest rate than a CD but gives you full access to your money anytime without penalty. If you might need the cash in an emergency, a high-yield savings account is safer than a CD. If you are certain you will not touch the money, a CD pays more.

A money market account is a hybrid: it pays more than a regular savings account but usually less than a CD, and it lets you write checks or make withdrawals (though often with limits). It is a middle ground if you want some flexibility and some yield.

Treasury bills and bonds are issued by the federal government and are also very safe, but they require a minimum investment and have their own rules about early withdrawal. They are not FDIC insured because they are backed by the U.S. government instead.

The right choice depends on your timeline and your certainty about not needing the money. If the term is short (three to six months) and you are sure, a CD is hard to beat. If you are unsure, a high-yield savings account costs you less in opportunity cost.

Frequently Asked Questions

Can I withdraw money from a CD before it matures?

Yes, but you will pay an early withdrawal penalty that typically costs several months of interest. The exact penalty depends on the bank and the CD term. On a $10,000 CD, the penalty might be $100 to $300. It is deducted from your balance, so you could end up with less than you deposited if the penalty exceeds your earned interest.

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 much lower interest rate — often less than 0.5% APY. A CD locks your money away for a set term but pays two to four times more interest. Choose a savings account if you need access to the money; choose a CD if you can leave it alone.

Are CDs safe if the bank fails?

Yes. CDs are FDIC insured up to $250,000 per depositor per bank. If the bank fails, the FDIC guarantees your principal and all earned interest up to that limit. This makes CDs one of the safest places to keep money, though the interest rate is lower than riskier investments.

What happens if I need the money right after I open a CD?

You can withdraw it, but you will pay the early withdrawal penalty. If you opened a one-year CD and withdraw after one month, you might lose three to six months of interest. If the penalty exceeds what you have earned, you get back less than you put in. This is why you should only open a CD if you are confident you will not need the cash.

Can I open multiple CDs at the same bank?

Yes. Each CD is insured separately up to $250,000, so you can open several CDs at one bank and be fully protected. Many people use this strategy to create a CD ladder — opening CDs with different maturity dates so that money becomes available at regular intervals without penalties.