Banking Certificates of Deposit

What is a CD and Is it the Best Way to Invest? [2024]

CDs are a great way to diversify your portfolio and still get a high rate of return. I wouldn’t put all your money in one, but they are a great way to reach short-term financial goals.

Updated Sept. 16, 2024
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A traditional savings account may not help you reach your financial goals. Shocking, I know. But most savings accounts at brick-and-mortar banks pay around 0.01% interest, which means you’ll earn pennies in interest on most balances.

If you’re trying to achieve big financial goals like me, you need other ways to make your money grow, like a CD or certificate of deposit. CDs often pay higher interest rates and they require that you don’t touch the funds for the duration of the term, which reduces your chances of spending the money prematurely.

Before you jump into CD investing, here’s everything you must know.

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What is a CD (certificate of deposit)?

A CD is a special type of deposit account offered by banks and credit unions. It provides you with a safe place to hold your money for a set period of time. Banks offer a higher interest rate or annual percentage yield (APY) than what most other deposit accounts offer, including high-yield savings or money market accounts.

CD rates in general tend to be higher than those banks and credit unions offer on savings or money market accounts. That’s because banks want to encourage customers to keep their money within its organization. Banks earn money by lending to businesses and customers. To encourage people to commit money to a CD, banks often apply higher interest rates than for other types of savings products. Some banks even offer promotional rates, so it pays to shop around for the best CD rates before committing to one.

Despite the fact that the financial institution uses your money to lend money to other people, your money is generally safe earning interest in a CD — so long as you open an account with a bank insured by the Federal Deposit Insurance Commission or a credit union insured by the National Credit Union Share Insurance Fund. Both offer deposit insurance — up to $250,000 of your money in your account is protected should the bank not be able to provide the money when you want it or when the CD matures.

Tip
Good to know: APY is the amount of interest earned over the course of a year when compounded. Many types of CDs compound interest during the length of the CD term. The more often interest is compounded, the more money you earn.

How do CDs work?


When you open a CD account, you can choose from several types of accounts. Each will have a time frame for keeping your money in the account and an interest rate or APY. For example in the image above, Discover offers a 12-month CD with a 4.5% APY, an 18-month with a 4.25% APY, a 24-month term with a 4.0% APY, and a 30-month term with a 3.75% APY.

You may also find that banks offer different types of interest rates for CDs including:

  • A fixed rate that won’t change from start to finish
  • A variable rate that will increase and decrease according to the bank’s guidelines
  • A “bump up” rate that allows you to request a one-time increase if rates go up

It’s important to read each CD’s fine print, though. Some may charge a penalty fee if you withdraw funds before the CD expires or require a minimum opening deposit. Knowing the terms is essential so you earn the funds you intended.

CD ladders

If investing all your money into a single CD with one maturity worries you, consider a CD ladder. This is when you open multiple CDs with different maturity dates and divide your money between them.

For instance, instead of investing $6,000 in a 30-month CD with a 3.75% APY, you might invest $2,000 in a one-year CD with a 4.5% APY; $2,000 in an 18-month CD with a 4.25% APY; and $2,000 in a two-year CD with a 4.0% APY. This allows you access to a portion of the funds every so often, allowing you to use them or reinvest them in another CD.

The benefits of opening a CD account

Like any bank product, there are pros and cons of opening a CD account. Here are the benefits to consider:

  • Earn passive income
  • The early withdrawal penalty may eliminate the temptation to spend
  • CDs at FDIC insured banks or NCUA insured credit unions are safe
  • You know before investing how much interest you’ll earn
  • Large number of options

The drawbacks of opening a CD account

It’s important to consider the downsides of a CD, including:

  • You can’t touch the money before maturity (or you’ll pay a penalty)
  • If interest rates increase, you can’t take advantage until the CD matures

CD account vs. traditional savings account: What’s the difference?

When choosing between a CD vs traditional savings account, consider the following:

  • Deposits and withdrawals: Traditional and online savings accounts allow deposits and withdrawals at any time; however the bank may limit the number of withdrawals you make. You must leave money tied up in a CD until it matures and you can’t make additional deposits to it.
  • Interest: Savings accounts and CDs both earn interest, but CDs usually have higher rates, especially for longer terms.
  • Penalty fee: You can withdraw your funds from a CD early, but you’ll pay a penalty, such as three months of interest, in some cases. Savings accounts don’t penalize you for early withdrawals.

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FAQs

Are CDs a good investment?

CDs are generally a safe, low-risk investment. If the interest you earn is good and the terms suit your needs, investing money in one can be a good thing. It all depends on what you want to accomplish by saving your money in a CD. If you are thinking about opening one, make sure you shop around for the best CD rates and terms to find the right financial product for you.

Can you lose money in a CD?

Most likely, you won’t lose money in a CD if your bank or credit union is federally insured. This means that if the bank were to fail, the federal government will insure up to $250,000 in your CD. The amount you deposit into the account will be returned to you when the CD matures.

If you’ve chosen a CD with a variable interest rate, the amount of interest earned may go down while the account accrues interest, but this isn’t a loss of money; it’s a reduction in the amount of new money earned.

How much money should you put in a CD?

It depends on your situation. Most CDs don’t have a minimum deposit, but many banks offer higher interest rates for larger deposits. You should also keep in mind that your money will not be accessible, so make sure the amount you invest in a CD is money you can afford to have out of reach for the length of the term.

Are there better options than a CD?

If you’re looking for a higher rate return, investing in the stock market is an option to consider. Those investments can pay more than you’d earn in interest with a CD, but there is a risk of losing money.

High-yield savings accounts are also a good option. Their interest rates may not be as high as a CD’s, but many banks offer comparable rates. For example, the Aspiration Spend & Save account offers an APY up to 3.00% if you meet certain terms. Plus, with a savings account, there are no fixed terms to worry about, so you’ll also be able to add and take out money if needed for an emergency.

Bottom line

I love CDs to diversify some of my investments. I like to keep a portion of my portfolio as safe as possible, and CDs allow me to do that without losing earnings. As long as you can be without the funds you deposit in a CD for the entire term, you can make your money grow and have a “for sure” investment.

As always, take some time to think through your financial goals for the money you want to put aside for savings and shop around for the best banks and accounts that will work for your situation. There are lots of CD accounts available with traditional and online banks and credit unions and they’re all competing for your business.

Author Details

Robin Kavanagh

Robin is a freelance writer who lives on the South Carolina beach. She has spent the last 20 years writing about all kinds of topics for publications such as The New York Times, Yes! Magazine, Next Tribe, Parenting, and various trade magazines. On FinanceBuzz.com, you’ll find her mostly writing about smart ways to use credit cards, navigating personal loans, how to save when traveling, and ways to improve your financial health.

Author Details

Samantha Hawrylack

Samantha Hawrylack is a writer with more than five years of experience. Her work has been published in Newsweek, MarketWatch, USA Today, Rocket Mortgage, BiggerPockets, Crediful, and many more. She holds a Bachelor of Science in Finance and a Master of Business Administration from West Chester University of Pennsylvania, and she was previously a brokerage investment professional with Series 7 and 63 licenses at Vanguard.