A Certificate of Deposit 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 — say $5,000 — and promise not to touch it for a fixed period, such as 3 months, 1 year, or 5 years. In return, the bank pays you a fixed interest rate that is almost always higher than what a regular savings account offers. When the time period ends, you get your original money back plus the interest earned.

The trade-off is straightforward: you lose access to your money during the CD term. If you withdraw before the term ends, you pay a early withdrawal penalty, which is usually a certain number of months' worth of interest. The bank tells you the penalty amount upfront, so you know the cost before you buy the CD.

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. This means if the bank fails, your money is protected up to $250,000 per account.

Key Takeaways

  • You deposit a fixed amount of money and agree not to withdraw it for a set period — typically 3 months to 5 years — in exchange for a may provide interest rate.
  • The interest rate on a CD is higher than a regular savings account because the bank knows exactly how long it can use your money.
  • Withdrawing money before the term ends triggers an early withdrawal penalty, usually measured in months of interest, which reduces your total earnings.
  • Your CD is insured up to $250,000 by the FDIC (at banks) or NCUA (at credit unions), so your principal is protected even if the institution fails.
  • When your CD matures, you can withdraw the money, open a new CD, or let it roll over into another CD at the current rate.

How the interest rate and term length work together

The interest rate you receive depends on two things: what the bank is offering at the time you buy the CD, and how long the term is. Longer terms usually pay higher rates because the bank has your money for a longer period and can lend it out or invest it. A 3-month CD might pay 4.5%, while a 5-year CD from the same bank might pay 5.2%. The exact rates vary by bank and change daily based on market conditions.

The term is the length of time your money is locked in. Common terms are 3 months, 6 months, 1 year, 2 years, 3 years, and 5 years. Some banks offer unusual terms like 7 years or 10 years, or very short ones like 1 month. You choose the term when you open the CD, and you cannot change it without paying the early withdrawal penalty.

Interest on a CD is compounded, meaning you earn interest on your interest. If you have a $10,000 CD earning 5% annually, after one year you have $10,500. If the term is longer, that $500 earns interest too in the following year. The bank tells you how often interest is compounded — daily, monthly, or quarterly — which affects the final amount slightly.

Early withdrawal penalties and what they cost you

If you need your money before the CD matures, you can withdraw it, but the bank will charge a penalty. The penalty is usually stated as a number of months of interest. For example, a 1-year CD might have a 3-month interest penalty. If you withdraw after 6 months, you lose 3 months' worth of the interest you earned, even though you already earned 6 months' worth.

The penalty varies by bank and by term length. Longer-term CDs often have larger penalties — a 5-year CD might have a 12-month penalty, while a 3-month CD might have a 1-month penalty. Before you open a CD, the bank must disclose the penalty in writing, so read that part carefully. Some banks offer "no-penalty CDs" that let you withdraw without a fee, but these pay lower interest rates to make up for the flexibility.

The penalty comes out of your interest earnings first. If your penalty is larger than the interest you have earned so far, the bank takes the difference from your principal. This means you could get back less money than you deposited if you withdraw very early on a long-term CD with a large penalty.

What happens when your CD reaches maturity

When the term ends, your CD matures. The bank sends you a notice a few weeks before the maturity date telling you what happens next. You have three main options: withdraw the money, open a new CD, or let the bank automatically roll it over into a new CD at the current rate.

If you do nothing, most banks automatically roll your CD into a new one with the same term at whatever rate they are currently offering. This happens during a grace period, usually 7 to 10 days after maturity. If you do not want to roll over, you must contact the bank during this window and request a withdrawal or a different product.

The new rate after rollover may be higher or lower than your original rate, depending on what interest rates are doing in the market. If rates have fallen, you might want to shop around at other banks before letting your CD roll over. If rates have risen, rolling over might lock you in at a better rate than you had before.

How CDs compare to savings accounts and money market accounts

A regular savings account has no term and no penalty for withdrawal. You can take money out anytime, but the interest rate is lower — often 0.01% to 0.5% depending on the bank. A CD pays more interest because you give up that flexibility. If you know you will not need the money for a year, a CD is usually the better choice.

A money market account is a hybrid. It pays more interest than a savings account but less than a CD, and it lets you write checks or make withdrawals, though usually with a limit on how many per month. Money market accounts are useful if you want some growth but also need occasional access to the money.

The choice depends on your situation. If you have an emergency fund, keep it in a savings account where you can reach it when ready. If you have money you will not need for several years, a CD locks in a higher rate and removes the temptation to spend it. If you want a middle ground, a money market account works.

How to compare CDs across different banks

CD rates vary significantly between banks. A large national bank might offer 4.5% on a 1-year CD, while an online bank or credit union might offer 5.1% for the same term. Over a year, that 0.6% difference adds up — on a $10,000 CD, it means $60 more in your pocket. Always compare rates before opening a CD.

When comparing, look at the interest rate, the term, the early withdrawal penalty, and whether the bank is FDIC-insured. Use a CD rate comparison tool or visit bank websites directly. Write down the rate, the term, the penalty, and the bank name so you can compare side by side. Pay attention to whether the rate is fixed for the entire term or if it changes — most CDs have fixed rates, but some promotional CDs have a higher rate for part of the term and then drop.

Also check the minimum deposit required. Some banks require $500 or $1,000 to open a CD, while others have no minimum. If you are opening a CD with a small amount, this matters. Once you find the best rate for your situation, you can open the CD online, by phone, or in person at a branch.

Tax treatment of CD interest

The interest you earn on a CD is taxable income. At the end of each year, the bank sends you a Form 1099-INT showing how much interest you earned. You report this on your tax return, and you pay income tax on it at your regular tax rate. This is true even if you did not withdraw the money — you owe tax on the interest as it accrues each year.

If you have a very long CD, the bank reports the interest each year, not all at once when the CD matures. For example, on a 5-year CD, you report interest on your taxes each of the 5 years, not just in year 5. This is important to know if you are planning your taxes or if you are in a lower tax bracket one year and want to time CD purchases accordingly.

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 a set number of months of interest, which the bank deducts from your earnings. If the penalty is larger than the interest you have earned, the bank takes the difference from your principal. Some banks offer no-penalty CDs that let you withdraw without a fee, but these pay lower rates.

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

A savings account has no term and no penalty, so you can withdraw anytime, but it pays very low interest. A CD locks your money for a set period and pays higher interest in return. Choose a savings account if you need access to the money; choose a CD if you can leave the money untouched for months or years.

What happens if the bank fails while I have a CD?

Your CD is insured up to $250,000 by the FDIC (if at a bank) or NCUA (if at a credit union). If the bank fails, the insurance agency pays you your principal plus any interest earned up to the maturity date. Your money is protected even if the institution goes out of business.

Do I have to pay taxes on CD interest?

Yes. The bank reports the interest on a Form 1099-INT, and you report it as income on your tax return. You pay tax on the interest each year it accrues, even if you do not withdraw the money until the CD matures. The interest is taxed at your regular income tax rate.

What should I do when my CD matures?

You have a grace period, usually 7 to 10 days, to decide. You can withdraw the money, open a new CD at the current rate, or let the bank automatically roll it over. If you do nothing, most banks roll it over automatically. Check the maturity notice the bank sends you to see the new rate and your options.