A CD locks your money away for a set time in exchange for a higher interest rate

A certificate of deposit (CD) is a savings product where you give a bank or credit union a lump sum of money and agree not to touch it for a fixed period—typically three months to five years. In return, the institution pays you a higher interest rate than a regular savings account would. The tradeoff is straightforward: the longer you lock the money away and the less access you have to it, the more interest you earn.

When your CD reaches its maturity date (the end of the term you chose), the bank returns your original deposit plus all the interest you've earned. At that point, you can withdraw the money, move it to another CD, or let it roll over into a new CD at whatever rate the bank is currently offering. If you need the money before maturity, most banks will let you withdraw it, but they charge an early withdrawal penalty—usually a few months' worth of interest.

CDs are insured by the Federal Deposit Insurance Corporation (FDIC) if held at a bank, or by the National Credit Union Administration (NCUA) if held at a credit union, up to $250,000 per depositor per institution. This means your money is protected even if the institution fails.

Key Takeaways

  • You deposit a fixed amount of money for a set period (three months to five years) and receive a may provide interest rate that is higher than a regular savings account.
  • Your money is locked away during the term; withdrawing early triggers a penalty that typically costs you several months of interest.
  • When the CD matures, you receive your original deposit plus all earned interest, and you can then withdraw, reinvest, or roll it over.
  • Interest rates on CDs vary by term length, institution, and economic conditions—longer terms usually pay more, but rates change frequently.
  • FDIC or NCUA insurance protects your deposit up to $250,000, so your principal is safe regardless of what happens to the bank.

How interest rates and term lengths work together

The interest rate a CD pays depends on three main factors: how long the term is, what the bank is currently offering, and the broader economic environment. Generally, a five-year CD will pay more than a one-year CD at the same bank, because you're giving up access to your money for longer. But this is not a hard rule—sometimes short-term rates are higher if the economy is shifting.

Banks set their own CD rates independently. One bank might offer 4.5% on a one-year CD while another offers 4.2%, so shopping around matters. Rates also change constantly. If you see a rate you like, it may be gone in a week. Online banks typically offer higher rates than brick-and-mortar branches because they have lower overhead costs.

Interest on a CD is usually compounded daily or monthly, meaning you earn interest on your interest. The longer the term, the more compounding works in your favor. A five-year CD at 4.5% will earn noticeably more than five one-year CDs at 4.5%, because the interest from earlier years gets added to your balance and earns interest itself.

What happens when your CD reaches maturity

On your maturity date, the bank will notify 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. Your options are: withdraw the money, open a new CD with the same bank, move the funds to a different institution, or let it roll over automatically into a new CD at the bank's current rate.

If you do nothing and the bank's rollover window closes, most institutions will automatically renew your CD into a new term at whatever rate they're currently offering. This can work in your favor if rates have risen, but it locks you in again if rates have fallen. Read the maturity notice carefully so you know what the bank's default action is.

Many people use the maturity date as a checkpoint to reassess their savings strategy. If you no longer need the money locked away, you can withdraw it. If rates have risen elsewhere, you can move to a different bank. If you want to keep the money growing at a may provide rate, you can roll it into another CD.

Early withdrawal penalties and when they explore

If you withdraw money from a CD before the maturity date, the bank charges an early withdrawal penalty. This penalty is typically expressed as a number of months of interest—for example, "three months of interest" or "six months of interest." The exact penalty varies by bank and by CD term. A three-month CD might have a one-month penalty, while a five-year CD might have a six-month or one-year penalty.

The penalty comes out of your interest earnings first. If you've earned enough interest to cover it, you lose some or all of your gains but still get your full principal back. If you haven't earned enough interest yet (because you're withdrawing very early), the penalty eats into your original deposit, and you get back less than you put in.

Some banks offer "no-penalty CDs" that let you withdraw without a penalty, but these pay lower interest rates to compensate. They're useful if you think you might need the money but want more than a savings account offers. However, they're less common than traditional CDs, and the rate difference can be significant.

How CDs compare to regular savings accounts and money market accounts

A regular savings account has no lock-in period—you can withdraw whenever you want—but it pays very low interest, often less than 0.5% annually. A money market account sits in the middle: it pays more than a savings account (usually 2% to 4% depending on the environment) but less than a CD, and you can withdraw money without penalty, though there may be limits on how many withdrawals you can make per month.

A CD pays the most interest of the three because you're giving up liquidity. The tradeoff is that your money is inaccessible for the term you choose. If you know you won't need the money for a year or more, a CD is the better choice. If you might need it sooner, a money market account or savings account is safer, even though it pays less.

CDs are also different from bonds or stocks, which can go up or down in value. A CD's rate is fixed and may provide—you know exactly how much you'll have at maturity, assuming you don't withdraw early. This makes CDs a low-risk way to earn more than inflation, though the rate is usually lower than what the stock market returns over long periods.

Laddering CDs to balance growth and access

One strategy people use to get higher CD rates while maintaining some access to their money is called CD laddering. Instead of putting all your money into one five-year CD, you split it into five one-year CDs. Each year, one CD matures, giving you access to that portion of your money. You can then withdraw it, spend it, or roll it into a new five-year CD.

Laddering works best when you have a larger amount to invest and you want to take advantage of higher long-term rates without locking everything away for the full period. It also protects you if rates rise: when each CD matures, you can reinvest at the new (potentially higher) rate rather than being stuck in an old rate for years.

The downside is that you earn less total interest than you would with one five-year CD, because some of your money is in shorter-term CDs at lower rates. But the flexibility often makes up for it, especially if you're not sure how long you can afford to keep the money locked away.

Things to watch for when opening a CD

Before you open a CD, confirm the interest rate, the term length, and the early withdrawal penalty in writing. Rates advertised online may have fine print—some are only available for new customers, some require a minimum deposit (often $500 to $2,500), and some are promotional rates that last only a few weeks.

Check whether the bank is FDIC-insured (for banks) or NCUA-insured (for credit unions). If you're depositing more than $250,000, you'll need to split it across multiple institutions to stay within the insurance limit. Also verify the compounding frequency—daily compounding earns slightly more than monthly, though the difference is small on most CDs.

Read the maturity notice terms carefully. Some banks have short windows to act before they automatically roll over your CD, and missing that window means you're locked in again at a rate you may not have chosen. If you think you might need the money, ask about the penalty before you commit.

Frequently Asked Questions

Can I withdraw money from a CD before it matures?

Yes, but you'll pay an early withdrawal penalty, usually equal to a few months of interest. The exact penalty depends on the bank and the CD term. If you haven't earned enough interest to cover the penalty, it comes out of your principal, and you get back less than you deposited.

What's the difference between a CD and a savings account?

A savings account has no lock-in period and you can withdraw anytime, but it pays very low interest (often under 0.5%). A CD locks your money for a set term and pays much higher interest in return. Choose a CD if you won't need the money for at least several months; choose a savings account if you need quick access.

What happens if the bank fails while my money is in a CD?

Your CD is protected by FDIC insurance (at banks) or NCUA insurance (at credit unions) up to $250,000. If the institution fails, the insuring agency will return your deposit plus accrued interest, even if the bank goes under.

Do I have to reinvest my money when a CD matures?

No. When your CD matures, you can withdraw the money, move it to another bank, open a new CD, or put it in a savings account. If you do nothing, most banks will automatically roll it into a new CD at their current rate, so read your maturity notice to understand the default action.

Are CD rates the same at every bank?

No. Banks set their own rates independently, and they change frequently. Online banks usually offer higher rates than brick-and-mortar branches. It's worth checking several institutions before you commit, because a difference of 0.5% to 1% can add up significantly over the CD term.