The basic steps to buy a CD

To buy a CD, you pick a bank or credit union, choose how long you want to lock your money away, and deposit the amount you want to invest. The institution gives you a rate of return for that time period—say 4.85% for 12 months—and you leave the money untouched until the maturity date. On that date, you get your principal back plus the interest earned, or you can roll it into a new CD at whatever rate is current then.

The actual process takes minutes. You can open a CD online at most banks without leaving your house, or you can walk into a branch and do it in person. You'll need a valid ID and a way to fund the account—a bank transfer, a check, or cash if you're at a branch. Some banks require a minimum deposit, which ranges from $500 to $2,500 at most places, though some online banks have no minimum at all.

The key decision you make upfront is the term length. A CD might be available for 3 months, 6 months, 1 year, 2 years, 5 years, or longer. Shorter terms usually pay less interest; longer terms usually pay more. You're trading liquidity—the ability to access your money whenever you want—for a higher rate.

Key Takeaways

  • You can open a CD online or at a branch by providing an ID and funding the account, with most banks requiring a minimum deposit between $500 and $2,500.
  • The term length you choose—3 months to 5 years or longer—determines both your interest rate and when you can access your money without penalty.
  • If you withdraw money before the maturity date, you will pay an early withdrawal penalty, which is usually a few months' worth of interest.
  • Shopping across multiple banks matters because CD rates vary significantly; a 1-year CD might pay 4.5% at one bank and 5.2% at another.
  • You can ladder CDs by buying several with different maturity dates so that money becomes available at regular intervals rather than all at once.

Where to open a CD and what rates look like

Online banks almost always offer higher rates than brick-and-mortar banks because they have lower overhead costs. As of now, online banks are paying rates in the range of 4.5% to 5.3% for 1-year CDs, while traditional banks often pay 2% to 3.5% for the same term. The difference compounds: on a $10,000 CD at 5% versus 3%, you earn $500 versus $300 over a year. That gap widens with larger deposits and longer terms.

Credit unions sometimes offer competitive rates, especially if you're a member. You can search for rates on comparison sites like Bankrate, DepositAccounts, or NerdWallet, which update daily. These sites let you filter by term length, minimum deposit, and institution type. You don't have to use a comparison site—you can call or visit banks directly—but comparing three to five options takes 15 minutes and can save you hundreds of dollars.

The rate you see quoted is the Annual Percentage Yield, or APY. This is the actual return you'll earn in a year, including compounding. It's different from the interest rate itself, but for CDs the difference is small enough that you can treat them as the same number for comparison purposes.

Understanding early withdrawal penalties

The main catch with a CD is that if you take your money out before the maturity date, you pay a penalty. The penalty is usually expressed as a number of months of interest. A common penalty on a 1-year CD is three months of interest. If your rate is 5% and you withdraw after six months, you lose about $250 on a $10,000 deposit (half a year's interest minus three months' penalty).

Penalties vary by bank and by term length. A 5-year CD might have a penalty of six months of interest, while a 3-month CD might have a penalty of one month. Before you open a CD, look up the early withdrawal penalty in the terms and conditions. Some banks publish this clearly on the product page; others bury it. If you can't find it, call and ask.

The penalty exists because the bank is locking in a rate for you. If rates rise after you buy your CD, the bank doesn't want you to leave and buy a higher-rate CD elsewhere. The penalty is their protection, and it's your cost if your situation changes and you need the money.

Choosing a term length that matches your timeline

The term you choose should match how long you can afford to leave the money alone. If you might need the money in 18 months, a 1-year CD is risky because you'd pay a penalty to access it early. A 2-year CD would be safer, even if the rate is slightly lower. If you're certain you won't touch the money for five years, a 5-year CD locks in a higher rate and removes the temptation to break it early.

Rates tend to be higher for longer terms, but not always. Sometimes a 2-year CD pays almost as much as a 5-year CD, making the 2-year the better choice if you want more flexibility. This is why shopping matters—you're not just comparing rates, you're comparing the rate-to-term tradeoff across different banks.

One strategy is to buy CDs with staggered maturity dates—a technique called laddering. You might buy a 1-year CD, a 2-year CD, and a 3-year CD at the same time. Each year, one matures and you can either spend the money or roll it into a new 3-year CD. This gives you regular access to some of your money while keeping most of it locked in at higher rates.

How to actually open the CD

If you're opening online, go to the bank's website, find the CD product page, and click "Open" or "get your free guide." You'll be asked for your name, address, Social Security number, and date of birth. The bank will verify this information and may run a soft credit check (this doesn't affect your credit score). You'll then choose your term length and enter your deposit amount.

Next, you'll fund the account. Most online banks let you link an external bank account and transfer money from there. The transfer usually takes one to three business days. Some banks let you mail a check, though this is slower. A few let you wire money for a faster deposit.

Once your deposit clears, your CD is open and earning interest. The bank will send you a confirmation document showing the principal, the rate, the maturity date, and the early withdrawal penalty. Keep this for your records. On the maturity date, the bank will either deposit the principal plus interest back into your account, or it will ask you what you want to do—renew the CD, move the money to savings, or withdraw it.

FDIC insurance and safety

CDs at banks insured by the Federal Deposit Insurance Corporation, or FDIC, are protected up to $250,000 per depositor per bank. This means if the bank fails, you get your money back up to that limit. Most banks are FDIC-insured; you can check on the FDIC website by searching for the bank's name.

Credit unions are insured by the National Credit Union Administration, or NCUA, with the same $250,000 limit. If you have CDs at multiple banks, each bank's insurance is separate, so you could have $250,000 at Bank A and another $250,000 at Bank B, both fully insured.

This insurance is why a CD at a smaller online bank with a higher rate is just as safe as a CD at a large traditional bank with a lower rate. The rate difference is real; the safety is the same.

Taxes on CD interest

The interest you earn on a CD is taxable income. If you earn $500 in interest in a calendar year, you'll owe federal income tax on that $500 (and possibly state income tax, depending on where you live). The bank will send you a 1099-INT form in January showing how much interest you earned, and you'll report that on your tax return.

This is one reason some people use CDs in retirement accounts like IRAs. Interest earned in an IRA CD is not taxed until you withdraw money from the IRA itself, which may be years later. If you're considering a large CD purchase, ask your tax preparer or financial advisor whether a regular CD or an IRA CD makes more sense for your situation.

Frequently Asked Questions

Can I withdraw money from a CD before it matures?

Yes, but you'll pay an early withdrawal penalty. The penalty is usually a few months of interest. For example, if you withdraw from a 1-year CD after six months and the penalty is three months of interest, you lose money compared to waiting. Check the bank's terms before you open the CD to know what the penalty is.

What happens when my CD matures?

The bank will notify you before the maturity date and ask what you want to do. You can roll the money into a new CD at the current rate, move it to a savings account, or withdraw it. If you don't respond, most banks automatically renew the CD at the new rate—but you have a grace period (usually 7 to 10 days) to change your mind and withdraw without penalty.

Is a CD better than a savings account?

CDs usually pay more interest than savings accounts because you're locking your money away. Right now, a 1-year CD might pay 5% while a high-yield savings account pays 4.5%. The tradeoff is that you can't access CD money without a penalty, while savings account money is always available. Use a CD if you won't need the money for a set period; use savings for an emergency fund.

Can I buy a CD with money from an IRA?

Yes. You can open a CD inside an IRA (traditional or Roth) at most banks. The interest grows tax-deferred or tax-free depending on the IRA type. The CD term and early withdrawal rules are the same, but IRA withdrawal rules also apply—if you withdraw before age 59½, you may owe a 10% penalty on top of income tax, with some exceptions.

Do I need a checking account at the bank to open a CD?

No. You can open a CD at any bank without having a checking account there. You just need a way to fund it—a transfer from another bank, a check, or cash at a branch. Some banks offer slightly better rates if you also have a checking account with them, but this is rare and usually not worth switching banks for.