What a Certificate of Deposit Is and How It Differs From a Savings Account
A Certificate of Deposit (CD) is a savings product where you give a bank or credit union a lump sum of money for a fixed period — typically three months to five years — in exchange for a may provide interest rate. Unlike a regular savings account, you cannot withdraw the money before the term ends without paying a penalty, usually a loss of some or all of the interest you would have earned.
The bank pays you interest at a rate set when you open the CD. That rate does not change, even if the Federal Reserve raises or lowers rates while your money is locked in. When the term ends, you get your original deposit back plus the interest earned, and you can then decide whether to open a new CD, move the money to savings, or use it.
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. That means if the institution fails, your money up to $250,000 is protected by the government.
Key Takeaways
- CD interest rates are locked in when you open the account and do not change, even if market rates rise or fall during your term.
- You cannot withdraw money from a CD before maturity without paying a penalty, which typically costs you some or all of the interest earned.
- Longer terms usually pay higher rates than shorter ones, but your money is tied up for that entire period.
- CDs are FDIC-insured at banks and NCUA-insured at credit unions, protecting your deposit up to $250,000 if the institution fails.
- CD rates change based on what the Federal Reserve does and what banks decide to offer, so comparing rates across institutions matters.
How CD Interest Rates Are Set and What Affects Them
Banks and credit unions set their own CD rates based on what the Federal Reserve does with its benchmark interest rate. When the Fed raises rates, banks typically raise CD rates to attract deposits. When the Fed lowers rates, CD rates fall. The rates also depend on how much competition exists in your area and how much money the bank needs to bring in.
The term length matters significantly. A three-month CD will almost always pay less than a one-year CD at the same bank. A five-year CD pays more than a one-year CD because the bank gets to hold your money longer and lend it out. However, this also means your money is locked up for five years, which is a real cost if you need it sooner or if rates rise sharply.
Shopping around is worth your time. A bank across town or an online bank may pay 0.5% more than your current bank, which adds up to real money on a $10,000 deposit. Websites that track CD rates can show you what different institutions are currently offering, though you will need to contact each one to open an account.
Comparing CD Terms: Short, Medium, and Long
The term you choose determines both how much interest you earn and how long your money is locked away. Shorter terms give you access to your cash sooner but pay less interest. Longer terms pay more but require a bigger commitment.
| Term Length | Typical Rate Range | Best For | Main Drawback |
|---|---|---|---|
| 3 to 6 months | Lower than longer terms | Money you may need soon; testing a bank | Very little interest earned; rates may rise after you lock in |
| 1 year | Mid-range | Balancing access and rate; common choice | Still a long wait if you need the money; rates could rise |
| 3 to 5 years | Highest available | Money you will not need; locking in a good rate | Long commitment; if rates rise, your money earns less |
A three-month CD works if you have money sitting idle and want to earn something on it while you decide what to do next. A one-year CD is the most common choice because it balances a decent interest rate with a timeframe most people can commit to. A three- to five-year CD makes sense only if you genuinely will not need the money and want to lock in the highest available rate.
What Happens When Your CD Matures
When your CD term ends, the bank sends you a notice — usually 10 to 30 days before maturity — telling you what will happen next. You have a choice window, typically 7 to 10 days, to decide whether to renew the CD at the bank's current rate, move the money to a savings account, or withdraw it entirely.
If you do nothing, most banks automatically renew your CD at whatever rate they are currently offering. That rate may be higher or lower than what you earned before. If rates have fallen significantly, you might want to move your money to a savings account instead, or shop for a better rate at another institution.
The money is yours to use once the term ends. There is no penalty for withdrawing it after maturity. Some people use maturing CDs as a way to save for a specific goal — they open a CD that matures right before they plan to make a large purchase or pay a bill.
Early Withdrawal Penalties and When They Apply
If you need your money before the CD matures, the bank will charge you an early withdrawal penalty. The penalty amount varies by bank and by term length. A common penalty is three months of interest, but some banks charge six months or even a full year of interest. A few banks charge a flat dollar amount instead.
The penalty is deducted from your interest earnings first. If you have earned $200 in interest and the penalty is $150, you get back your original deposit plus $50. If the penalty exceeds your interest, you lose some of your original deposit — you get back less money than you put in.
Before opening a CD, read the disclosure document that shows the penalty amount. Some banks offer "no-penalty CDs" that let you withdraw early without a penalty, but they pay lower interest rates to offset that flexibility. Whether a no-penalty CD makes sense depends on whether you might actually need the money early.
CDs Versus Other Savings Options
A regular savings account offers lower interest but complete flexibility — you can withdraw money anytime without penalty. A money market account typically pays more than savings but less than a CD, and you can usually write checks or make withdrawals. A CD pays the most interest but locks your money up and charges a penalty if you break the term.
If you have money you will not need for several years and want the highest may provide return, a CD makes sense. If you might need the money within a year or want to keep it accessible, a savings account or money market account is better. Some people use both: a CD for money they are saving for a specific goal years away, and a savings account for an emergency fund.
Treasury bills and bonds are another option if you have larger amounts to invest. They are backed by the U.S. government and offer competitive rates, but they work differently than CDs and require you to understand how they are bought and sold.
How to Open a CD and What You Will Need
Opening a CD is straightforward. You can do it in person at a bank or credit union branch, by phone, or online. You will need to provide your name, address, Social Security number, and proof of identity. You will also need to decide how much money to deposit and what term length you want.
The bank will ask whether you want the interest paid to you monthly, or added to the CD balance and paid when it matures. If you want the interest added to the balance, you earn interest on your interest — a small boost called compounding. If you want it paid out, you get a check or transfer to another account each month.
Once you open the CD, you receive a receipt or confirmation showing the deposit amount, interest rate, maturity date, and penalty amount. Keep this document. You will need it if you ever need to withdraw early or if you want to verify the terms when the CD is about to mature.
Frequently Asked Questions
Can I add more money to a CD after I open it?
No. A CD is a fixed deposit — you cannot add to it or withdraw from it before maturity without paying a penalty. If you want to save more money, you would need to open a separate CD or use a savings account.
What if interest rates rise after I lock in my CD?
Your rate stays the same for the entire term. If rates rise significantly, you will earn less than you could have if you had waited. This is the trade-off for the certainty of a locked-in rate. When your CD matures, you can open a new one at the higher rate.
Is my money safe in a CD if the bank fails?
Yes, up to $250,000 per depositor per bank. The FDIC (for banks) or NCUA (for credit unions) insures your deposit. If the institution fails, you get your money back, including any interest earned up to the maturity date.
Can I use a CD as collateral for a loan?
Yes. Some banks will lend you money using your CD as collateral, which means you do not have to break the CD and pay the penalty. You pay interest on the loan, but your CD keeps earning its rate. This works if you need cash but want to keep the CD intact.
What is the difference between a CD and a high-yield savings account?
A high-yield savings account pays more interest than a regular savings account and lets you withdraw money anytime without penalty. A CD pays even more interest but locks your money up. If you want flexibility, choose savings. If you want the highest rate and can leave the money alone, choose a CD.