A CD is a savings account where you lock up your money for a set time in exchange for a higher interest rate
A certificate of deposit (CD) is an account at a bank or credit union where you deposit a lump sum of money and agree not to touch it for a fixed period—typically three months to five years. In return, the bank pays you a higher interest rate than you'd get in a regular savings account. The bank uses your money during that time and pays you back the full amount plus interest when the term ends.
The trade-off is simple: you give up access to your cash for a may provide return. If you need the money before the term is up, you'll pay an early withdrawal penalty—usually a few months' worth of interest, though the exact amount varies by bank and CD length. Once the term ends, your CD matures, and you can withdraw the money or roll it into a new CD.
CDs are insured by the FDIC (Federal Deposit Insurance Corporation) up to $250,000 per account at each bank, so your principal is protected even if the bank fails. The interest rate you lock in at the start stays the same for the entire term, regardless of what happens to market rates.
Key Takeaways
- You deposit a fixed amount and cannot withdraw it without penalty until the maturity date arrives, typically three months to five years later.
- The interest rate is set when you open the CD and does not change, even if bank rates rise or fall during your term.
- Early withdrawal penalties usually cost you several months of interest, so only lock up money you won't need before maturity.
- Your deposit is FDIC-insured up to $250,000, protecting your principal if the bank fails.
- When your CD matures, you can withdraw the money, let it roll into a new CD automatically, or move it elsewhere.
How interest rates and terms work together
CD rates change based on what the Federal Reserve does with short-term interest rates. When the Fed raises rates, banks typically offer higher CD rates to attract deposits. When the Fed cuts rates, CD rates fall. The rate you see when you open a CD is locked in for the entire term—you won't benefit if rates go up, but you're also protected if they drop.
Longer terms usually come with higher rates. A five-year CD will pay more than a three-month CD, because the bank gets to hold your money longer and you're giving up more access. However, this also means you're taking on more risk that you'll need the money before five years pass. Some banks offer no-penalty CDs, which let you withdraw early without a penalty, but these pay lower rates to offset that flexibility.
The interest compounds—meaning you earn interest on your interest—but how often depends on the bank. Some compound daily, others monthly or quarterly. More frequent compounding means slightly more money at maturity, though the difference is usually small.
What happens when your CD matures
When your CD reaches its maturity date, the bank sends you a notice (usually 10 to 30 days before). At that point, you have a few options. You can withdraw the full amount—principal plus all interest earned. You can open a new CD at the current rate, which may be higher or lower than what you just earned. Or you can move the money to a savings account, money market account, or another bank entirely.
If you do nothing, many banks will automatically renew your CD into a new term at the current rate. This renewal happens without your permission, so if rates have dropped significantly, you may end up locked in at a worse rate. Read your CD agreement to see your bank's renewal policy, and mark your calendar for the maturity date so you can make an active choice.
Some banks offer CD ladders—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 maturing a year apart, so you have access to part of your money every year without paying penalties.
Early withdrawal penalties and when they apply
If you withdraw money before the maturity date, the bank deducts an early withdrawal penalty from your interest earnings or principal. The penalty amount varies widely—some banks charge three months of interest, others charge six months or a full year's worth. A few charge a flat dollar amount instead. Always check the disclosure document before opening a CD to see exactly what the penalty is.
The penalty is calculated based on the rate you locked in, not the current rate. So if you opened a CD at 4.5% and rates have since dropped to 2%, your penalty is still based on 4.5%. This can mean the penalty eats into your principal, leaving you with less money than you deposited—a real loss, not just lost interest.
Some situations where people withdraw early: a job loss, a medical emergency, a better investment opportunity, or a change in plans. Before you open a CD, be honest about whether you might need that money. If there's any chance you'll need it within the term, a regular savings account or money market account is safer, even if the rate is lower.
CDs versus savings accounts and money market accounts
A regular savings account has no term and no penalty for withdrawal, but the interest rate is much lower—often 0.01% to 0.5% at traditional banks. You have complete flexibility but earn almost nothing. A money market account sits in the middle: it pays more than savings but less than a CD, and you can usually write checks or make a few withdrawals per month without penalty.
A CD pays the highest rate because you're giving up access. If you have money you won't need for at least a year and want the best may provide return, a CD makes sense. If you might need the money sooner or want to keep your options open, the flexibility of a savings or money market account is worth the lower rate.
High-yield savings accounts at online banks have narrowed the gap in recent years, sometimes offering rates close to short-term CDs with full liquidity. Compare rates across all three before deciding. The difference between 4.5% in a CD and 4.3% in a high-yield savings account might not be worth locking your money away for a year.
Where to open a CD and what to compare
You can open a CD at any bank, credit union, or online bank. Rates vary significantly—a five-year CD might pay 4.0% at one bank and 5.0% at another. Online banks typically offer higher rates than brick-and-mortar branches because they have lower overhead costs. Credit unions sometimes offer competitive rates to members.
When comparing CDs, look at the annual percentage yield (APY), not just the interest rate. APY includes the effect of compounding and shows you the true return. Also check the minimum deposit—some CDs require $500, others $10,000 or more. Confirm the early withdrawal penalty in writing before you commit, and verify that the bank is FDIC-insured.
Use a CD rate comparison site to see what's available, but always go directly to the bank's website or call to confirm the rate and terms. Rates change daily, and a rate you saw yesterday may not be available today. Once you've chosen a bank, opening a CD usually takes 10 to 15 minutes online or over the phone.
Tax treatment of CD interest
Interest you earn on a CD is taxable income in the year you earn it, even if you don't withdraw the money. The bank will send you a 1099-INT form at tax time showing how much interest you earned. You report this on your federal tax return and pay income tax on it at your ordinary rate.
If your CD is held in a retirement account like an IRA, the interest is tax-deferred (or tax-free, depending on the account type). But in a regular taxable account, you owe tax on the interest regardless of whether you withdraw it. This is one reason CDs make more sense for longer terms—the higher rate compensates for the tax you'll owe.
Frequently Asked Questions
Can I withdraw money from a CD before it matures?
Yes, but you'll pay an early withdrawal penalty that typically costs several months of interest. The exact penalty depends on your bank and the CD term. In some cases, the penalty can eat into your principal, leaving you with less than you deposited. Check your CD agreement before opening to see the specific penalty amount.
What's the difference between a CD and a savings account?
A savings account has no term and no withdrawal penalty, but pays much lower interest—often under 0.5%. A CD locks your money for a set period and pays higher interest in exchange. If you need flexibility, choose savings. If you won't touch the money for at least a year, a CD usually pays significantly more.
What happens if the bank fails while I have a CD?
Your CD is protected by FDIC insurance up to $250,000. If the bank fails, the FDIC will pay you your full deposit plus all accrued interest, even if the bank goes under. This protection applies as long as the bank is FDIC-insured, which you can verify on the FDIC website.
Do I have to renew my CD when it matures?
No. When your CD matures, you can withdraw the money, open a new CD at the current rate, or move it to another account or bank. Many banks automatically renew CDs if you don't act, so check your agreement and mark your calendar for the maturity date to make an active choice.
Is a CD a good investment if rates are falling?
A CD locks in your rate, so if rates fall after you open it, you're protected—you keep earning the higher rate you locked in. However, if rates are expected to rise, locking in a lower rate now means you'll miss out on higher rates later. Consider shorter terms if you think rates will go up, or a no-penalty CD if you want flexibility.