A certificate of deposit locks your money away for a set time in exchange for a higher interest rate

When you open a CD, you give a bank or credit union a lump sum of money and agree not to touch it for a specific period — usually three months to five years. In return, the bank pays you a fixed interest rate that is almost always higher than what you would earn in a regular savings account. The bank uses your money during that time and pays you back the full amount plus the interest when the term ends.

The trade-off is simple: you lose access to your cash. If you need the money before the CD matures, you pay an early withdrawal penalty — typically a few months' worth of interest. That penalty is why CDs work best for money you know you will not need soon.

The interest rate is locked in the day you open the CD. It does not change, even if the bank raises rates later. This predictability is one reason people use CDs: you know exactly how much money you will have at the end.

Key Takeaways

  • You deposit a fixed amount of money for a fixed time period, and the bank pays you a set interest rate that does not change.
  • Your money is insured up to $250,000 by the FDIC (at banks) or NCUA (at credit unions), so the principal is protected even if the institution fails.
  • If you withdraw money before the term ends, you lose some or all of the interest you earned, depending on the penalty structure.
  • CDs pay more interest than savings accounts because the bank knows exactly when it can use your money and for how long.
  • When your CD matures, you can cash it out, renew it for another term at the current rate, or move the money elsewhere.

How the interest rate and term length work together

The longer you lock your money away, the higher the interest rate usually is. 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 it has your money for longer and can lend it out or invest it with more certainty.

The rate is fixed for the entire term. If you open a one-year CD at 4.8 percent, you earn 4.8 percent for all twelve months, even if the bank drops its rates to 3 percent next month. This protection cuts both ways: if rates rise to 6 percent, you are still locked in at 4.8 percent.

Interest compounds on most CDs, meaning you earn interest on the interest. How often it compounds — daily, monthly, or quarterly — affects how much you end up with. A CD that compounds daily will pay slightly more than one that compounds quarterly, even at the same stated rate.

What happens if you need the money early

Every CD has an early withdrawal penalty written into the terms before you open it. Common penalties are three months of interest, six months of interest, or a flat fee. Some banks charge a percentage of the principal. You need to read the specific terms for the CD you are considering, because penalties vary widely.

If you withdraw early, the bank deducts the penalty from your interest earnings first. If the penalty is larger than the interest you have earned so far, you lose principal — you get back less money than you put in. For example, if you open a $10,000 CD earning 4 percent annually and withdraw after two months, you might have earned only about $67 in interest. A six-month penalty could be $200, so you would get back $9,867.

Some banks offer no-penalty CDs that let you withdraw without a penalty, though they usually pay a lower interest rate to compensate. These are worth considering if you are not certain you can leave the money untouched.

FDIC and NCUA insurance protects your principal

Money in a CD at an FDIC-insured bank is protected up to $250,000 per depositor, per bank. Money in a CD at an NCUA-insured credit union has the same $250,000 protection. This means if the bank or credit union fails, you get your principal back, even if the institution goes under.

The insurance covers the amount you deposited plus any interest earned, up to the $250,000 limit. If you have multiple CDs at the same bank, the coverage applies to your total balance across all of them. If you want to insure more than $250,000, you can open CDs at different banks or use different ownership categories (for example, one CD in your name and another in joint names with your spouse).

This insurance is automatic — you do not have to do anything to activate it. It applies whether the CD is at a large national bank or a small local credit union, as long as the institution is FDIC or NCUA insured.

What happens when your CD matures

When the term ends, your CD reaches maturity. The bank sends you a notice a few weeks before, usually explaining your options. You typically have a grace period — often seven to ten days — to decide what to do with the money.

Your choices are: cash out and take the money, renew the CD for another term at the current rate, or move the money to a different product like a savings account or money market account. If you do nothing during the grace period, many banks automatically renew your CD at the new rate. Read the maturity notice carefully so you are not surprised by a renewal you did not intend.

If you renew, you lock in whatever rate the bank is offering at that moment. Rates change constantly, so the new rate might be higher or lower than what you were earning. This is why it pays to shop around when your CD matures — you can take the money to a different bank if another institution is offering a better rate.

How CDs compare to other savings options

A regular savings account is more flexible but pays much less interest — often 0.01 to 0.5 percent. You can withdraw anytime without penalty, but you sacrifice the higher earnings a CD offers. A money market account usually pays more than savings but less than a CD, and it gives you limited check-writing or debit card access.

A high-yield savings account has become more competitive in recent years, sometimes paying rates close to short-term CDs. The advantage is that your money stays accessible. The disadvantage is that the rate can change at any time, whereas a CD rate is locked in.

Bonds and Treasury securities offer different trade-offs: they may pay more over longer periods, but they are not FDIC insured and their value fluctuates. CDs are simpler and safer for people who want a may provide return with no market risk.

Laddering CDs to balance access and rate

Many people use a strategy called CD laddering to get higher rates while keeping some money accessible. Instead of putting all your money into one five-year CD, you split it into five one-year CDs. Each year, one CD matures and you can renew it at the current rate or use the money.

This approach gives you regular access to portions of your money without the early withdrawal penalty. It also lets you take advantage of rising rates: if rates go up, you renew the maturing CD at the higher rate instead of being locked in at an old rate for years.

Laddering works best when you have a larger sum to divide and you are comfortable managing multiple CDs. It requires more attention than a single CD, but it offers more flexibility and the ability to adapt as rates change.

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, and it comes out of your earnings first. If the penalty exceeds what you have earned, you lose principal. Some banks offer no-penalty CDs with lower rates if access is important to you.

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

A savings account lets you withdraw anytime but pays very low interest, usually under 1 percent. A CD locks your money for a set term and pays much higher interest — often 4 to 5 percent — in exchange for that commitment. Both are FDIC insured up to $250,000.

Do I pay taxes on CD interest?

Yes. The interest you earn on a CD is taxable income in the year you earn it, even if you do not withdraw the money. The bank sends you a 1099-INT form at tax time showing how much interest you earned. This is one reason CDs in retirement accounts like IRAs are useful — the interest grows tax-deferred.

What happens if I do nothing when my CD matures?

Most banks automatically renew your CD for another term at the current rate if you do not take action during the grace period. You will receive a notice before maturity explaining the renewal terms and the window you have to make a different choice. Read that notice so you know what rate you are being locked into.

Can I open a CD with a very short term, like one month?

Some banks offer CDs with terms as short as one month, though they are less common. The rates on very short terms are usually lower than longer-term CDs because the bank cannot use your money for as long. Most banks focus on three-month, six-month, one-year, and longer terms.