What a CD is and how your money grows

A certificate of deposit (CD) is a bank account where you agree to leave a fixed amount of money untouched for a set period of time — typically three months to five years — in exchange for a higher interest rate than a regular savings account. The bank pays you interest on that money, and you get the full amount back when the term ends.

The trade-off is simple: you lock up your cash, and the bank rewards you for it. If you withdraw the money before the term is over, you pay a penalty — usually a few months' worth of interest. This penalty structure is what lets banks offer better rates; they know your money will stay put.

The interest rate on a CD is fixed, meaning it does not change during the term. If you open a one-year CD at 4.5%, you earn 4.5% for the full year, regardless of whether interest rates rise or fall in the market. This predictability is one reason people choose CDs when they have money they will not need soon.

Key Takeaways

  • A CD locks your money for a set term (three months to five years) in exchange for a fixed interest rate higher than a savings account.
  • You receive your full deposit plus all earned interest when the term ends; early withdrawal triggers a penalty that typically costs several months of interest.
  • CD rates are fixed for the entire term and do not move with market changes, so you know exactly what you will earn upfront.
  • The longer the term, the higher the rate usually is, but your money is unavailable for that entire period.
  • CDs are FDIC-insured up to $250,000 per depositor per bank, so your principal is protected even if the bank fails.

How much you earn and what affects the rate

The amount you earn depends on three things: how much you deposit, the interest rate the bank offers, and how long the term is. A $10,000 CD at 4.5% for one year earns $450 in interest. The same $10,000 at 5.0% earns $500. The difference compounds over longer terms.

Banks set CD rates based on what the Federal Reserve does with short-term interest rates. When the Fed raises rates, new CDs typically offer higher rates. When the Fed cuts rates, new CDs offer lower rates. However, your existing CD rate never changes — it is locked in the day you open it.

Longer terms usually pay more than shorter ones. A three-month CD might pay 4.0%, while a five-year CD from the same bank might pay 5.2%. This is because the bank wants to keep your money longer and is paying you for that commitment. Online banks often pay higher rates than brick-and-mortar banks because they have lower overhead costs.

When the term ends and what happens next

On the maturity date — the day your term ends — the bank deposits your original deposit plus all interest into your account. You can then withdraw the money, move it to another account, or roll it into a new CD at whatever rate the bank is offering at that time.

Most banks have a grace period after maturity, usually seven to ten days, during which you can withdraw your money without penalty. If you do nothing during that window, many banks automatically roll your CD into a new one at the current rate. Check your CD agreement to see your bank's policy, because you do not want to be locked into a new term at a lower rate by accident.

If you need the money before maturity, you can withdraw it, but you will pay an early withdrawal penalty. This penalty varies by bank and by term length. A three-month CD might charge one month of interest; a five-year CD might charge six months. Read the terms before you open the account so you know what it costs to get out early.

CD ladders and how to access your money gradually

A CD ladder is a strategy where you open multiple CDs with different maturity dates so that money becomes available at regular intervals. For example, you might open five one-year CDs, each starting one month apart. One matures every month, giving you access to part of your money without breaking a single CD early.

This approach lets you earn CD rates while keeping some liquidity. If interest rates rise, you can reinvest the money that matures into a new CD at the higher rate. If you need cash unexpectedly, you wait for the next CD to mature instead of paying a penalty.

A ladder works best when you have a larger amount to split — say $25,000 or more — and you know you will not need all of it at once. For smaller amounts or shorter time horizons, a regular savings account or money market account may be simpler.

FDIC protection and what happens if the bank fails

CDs held at FDIC-insured banks are protected up to $250,000 per depositor per bank. This means if the bank fails, the FDIC will return your full deposit plus all accrued interest, up to that limit. This protection applies even if you have not reached maturity yet.

If you have more than $250,000 to deposit, you can spread it across multiple banks to stay within the insurance limit on each one. You can also open CDs in different ownership categories — for example, a CD in your name and a separate CD in a joint account with your spouse — and each is insured separately up to $250,000.

Check that your bank is FDIC-insured before you open a CD. Most traditional banks are, but some online banks and credit unions use different insurance (NCUA for credit unions). The bank's website or a call to customer service will confirm.

CD rates right now and where to compare

CD rates change constantly based on what the Federal Reserve does and what banks decide to offer. There is no single "best" rate — it depends on the term you want, the bank you choose, and when you open the account. Rates vary significantly between banks, so comparing before you commit is worth the time.

Online banks typically offer higher rates than traditional banks because they have lower costs. A brick-and-mortar bank might offer 4.0% on a one-year CD, while an online bank offers 4.8% for the same term. Over a year, that 0.8% difference adds up.

You can compare rates on financial websites that track CD offerings, or call banks directly. When you find a rate you like, read the fine print: check the early withdrawal penalty, the grace period after maturity, and whether the bank requires a minimum deposit. Some banks require $500 or $1,000 to open a CD; others have no minimum.

CDs versus savings accounts and money market accounts

A CD pays more interest than a regular savings account because your money is locked up. A savings account lets you withdraw anytime without penalty, so the bank pays less. If you might need the money within a few months, a savings account is safer. If you know you will not touch it for at least a year, a CD usually pays more.

A money market account sits between the two. It typically pays more than a savings account but less than a CD, and it lets you withdraw money (usually with limits on how often). Money market accounts are useful if you want some interest but also need occasional access to your cash.

The choice depends on your timeline and whether you can afford to lock the money away. CDs make sense for money you will not need soon and want to earn a may provide return on. Savings accounts make sense for emergency funds or money you might need within months.

Frequently Asked Questions

Can I withdraw money from a CD before it matures?

Yes, but you will pay an early withdrawal penalty. The penalty is usually several months of interest and varies by bank and term length. Check your CD agreement before opening to know the exact cost. Some banks allow one penalty-free withdrawal per year, so ask about that option.

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

Your rate stays the same for the entire term. This is actually good for you — your CD continues earning the higher rate you locked in, while new CDs pay less. You benefit from having locked in early.

Do I have to reinvest my CD when it matures?

No. When your CD matures, you can withdraw the money, move it to a savings account, or open a new CD. Most banks have a grace period of seven to ten days after maturity during which you can withdraw without penalty. After that, many banks automatically roll you into a new CD, so act quickly if you want to avoid that.

Are CDs taxed?

Yes. The interest you earn on a CD is taxable income. The bank will send you a 1099-INT form at the end of the year showing how much interest you earned, and you report that on your tax return. This is true even if you do not withdraw the money yet.

What is the minimum amount I need to open a CD?

It varies by bank. Some banks have no minimum; others require $500, $1,000, or more. Online banks often have lower minimums than traditional banks. Check the bank's website or call to confirm before you apply.