A CD account is a savings account where you deposit money for a fixed period and earn a set interest rate in return

A certificate of deposit (CD) is a contract between you and a bank or credit union. You give them a sum of money, they hold it for a specific length of time—called the term—and they pay you interest on top of what you deposited. The interest rate is locked in when you open the account and does not change, even if rates rise or fall in the market.

The catch is that you agree not to touch the money until the term ends. If you withdraw before that date, you pay a early withdrawal penalty—usually a few months' worth of interest, though the exact amount depends on the bank and the term length. When the term ends, your money and interest are yours to keep, move to another CD, or withdraw.

CDs are different from regular savings accounts because the rate is higher and fixed. A regular savings account rate can change at any time and is usually lower. In exchange, you lose the flexibility to access your cash whenever you want.

Key Takeaways

  • You deposit a lump sum, agree to leave it untouched for a set term (usually three months to five years), and receive a fixed interest rate for that period.
  • The interest rate on a CD does not change, even if market rates move up or down after you open the account.
  • Withdrawing money before the term ends costs you an early withdrawal penalty, typically a few months of interest.
  • CD rates are higher than regular savings accounts because you are giving up access to your money for a defined time.
  • When the term ends, you can withdraw your money, open a new CD, or move the funds elsewhere.

How the interest rate and term length work together

The longer you lock your money away, the higher the interest rate the bank will offer you. A three-month CD might pay 4.5 percent, while a five-year CD at the same bank might pay 5.2 percent. The bank is willing to pay more because they get to use your money for longer without you being able to reclaim it.

The interest rate you receive is set the day you open the account. If rates drop the next week, you still earn the original rate. If rates jump, you are locked into the lower rate you agreed to. This is why timing matters: opening a CD when rates are high protects you if they fall, but it also means you miss out if they rise.

Interest compounds—meaning you earn interest on your interest—though how often depends on the bank. Some compound daily, others monthly or quarterly. More frequent compounding means slightly more money at the end, though the difference is usually small on shorter terms.

What happens when your CD term ends

When the maturity date arrives, the bank notifies you (usually by mail or email) that your CD is about to mature. You then have a window—typically 7 to 10 days—to decide what to do with the money. Most banks automatically renew the CD into a new term at the current rate if you do nothing, so check your mail and make a choice before that deadline.

Your three options are: withdraw the full amount (principal plus interest), move it to a different bank or account, or open a new CD. If you let it auto-renew and then change your mind, you will owe the early withdrawal penalty on the new term, so read the renewal notice carefully.

Early withdrawal penalties and when they apply

If you need your money before the term ends, the bank charges a penalty. The amount varies widely—some banks charge three months of interest, others charge six months or a percentage of the principal. A few banks have no penalty on certain short-term CDs, but those are rare and usually come with lower rates.

The penalty is deducted from your interest earnings first. If the penalty is larger than the interest you have earned so far, the bank takes the difference from your principal. For example, if you deposited $5,000 in a one-year CD earning 4 percent, and you withdraw after three months, you might owe a six-month penalty ($100) but have only earned $50 in interest. The bank would take the $50 interest plus $50 from your original $5,000, leaving you with $4,950.

Some life events—like the death of the account holder—may waive the penalty, but this varies by bank. Always ask before withdrawing early.

CD laddering: a way to balance rate and access

One strategy people use to get higher CD rates without locking all their money away for years is called laddering. You open multiple CDs with different term lengths at the same time. For example, you might open five CDs: one each for one year, two years, three years, four years, and five years.

As each CD matures, you renew it for the longest term (five years in this example). Over time, you have a "ladder" where one CD matures every year, giving you regular access to some of your money while the rest earns the higher rate that longer terms offer. This approach requires more money upfront and more attention, but it lets you capture higher rates without being completely locked in.

Where to open a CD and what to compare

Banks, credit unions, and online banks all offer CDs. Online banks typically pay higher rates because they have lower overhead costs. Credit unions sometimes offer competitive rates to their members. Traditional brick-and-mortar banks often pay less but may offer other perks like waived penalties for certain situations.

When comparing CDs, look at the interest rate, the term length, the early withdrawal penalty, and the minimum deposit required. A CD that pays 0.5 percent more than another might earn you hundreds of dollars over a five-year term, so the rate matters. Also check whether the bank is FDIC-insured (for banks) or NCUA-insured (for credit unions). This insurance protects your deposit up to $250,000 if the institution fails.

Some banks offer "no-penalty CDs" or "flexible CDs" that let you withdraw without a penalty, but these pay lower rates than traditional CDs. They are useful if you think you might need the money but want more than a savings account rate.

CDs versus other savings options

A CD pays more than a regular savings account but less than you might earn from stocks or bonds over the same period. It is safer than investing in the market because the rate is may provide and your principal is insured. A high-yield savings account offers flexibility that a CD does not—you can withdraw anytime without penalty—but usually pays a lower rate.

Money market accounts sit between savings accounts and CDs: they pay more than savings but less than CDs, and they let you write checks or make withdrawals, though sometimes with limits. Treasury bills (short-term government bonds) can pay rates similar to CDs and are backed by the U.S. government, but they work differently and require a different process to purchase.

The right choice depends on when you will need the money. If you know you will not touch it for two years, a CD locks in a higher rate. If you might need it sooner, a high-yield savings account keeps your options open.

Frequently Asked Questions

Can I withdraw money from a CD before it matures?

Yes, but you will owe an early withdrawal penalty. The penalty is usually a few months of interest, though it varies by bank and term length. In some cases, the penalty can be larger than the interest you have earned, meaning you lose part of your principal. A few banks offer no-penalty CDs, but they pay lower rates.

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

A CD pays a higher, fixed interest rate in exchange for locking your money away for a set term. A savings account lets you withdraw anytime without penalty but pays a lower rate that can change. If you need flexibility, choose savings. If you know you will not touch the money, a CD pays more.

Do I have to renew my CD when it matures?

No. When the term ends, you can withdraw the money, move it to another bank, or open a new CD. Most banks auto-renew if you do nothing, so read the maturity notice and act before the deadline if you want a different option.

Are CDs safe if the bank fails?

Yes, if the bank is FDIC-insured. Your CD is protected up to $250,000. Credit union CDs are protected up to $250,000 by NCUA insurance. Check the bank's website or call to confirm it carries this insurance.

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

Your rate stays the same for the entire term. You do not benefit from the rate increase, but you also do not lose money—you still earn what you locked in. This is why some people open CDs when rates are high and others wait for rates to rise before committing.