What is a Certificate of Deposit or Share Certificate?

Looking for a Safe Way to Grow Your Savings? Consider a CD If you're willing to wait, a CD or share certificate can be a great way to earn a high interest rate on the money you deposit. But first, you might be asking,

You can get a certificate of deposit (CD) through almost any bank, while share certificates are available exclusively at credit unions. They are similar products. Essentially, what is a certificate of deposit if not a promise? With both products, you essentially promise that you'll leave a certain amount of money in an account for a specified amount of time. In exchange for not accessing the money during that period, the bank or credit union offers high interest rates on the deposited amount.

The length of a share certificate or CD can vary, but anywhere between six months and five years is common. There is usually a minimum required deposit—around $500 is typical. The money you deposit is referred to as the principal, the length of time you’re required to leave it in is the term, and the end date when you can withdraw the money without penalty is the date of maturity. The interest rate, and annual percentage yield determine how much you’ll make in interest off your initial deposit.

Or, in other words, "When can I get my money?!" When a CD or share certificate matures, you generally have a time limit to decide what to do with the money. If you take too long to decide what to do, the financial institution may roll over your money into another CD or share certificate for the same term at the current interest rate—this could be more or less than you expect. If you want to take the money out after the date of maturity, you can ask the bank or credit union to move the money into another account or send you a check. Some institutions have you designate an account when you open the CD, but offer flexibility to change if you decide to reinvest.

It is possible to access the money before the CD or share certificate matures, but if you do so, you’ll face penalties and fees. Consider a shorter term if you think you might need the money sooner than later.

Most people use a local bank or credit union for convenience, although there are online options that may work for you. Another option is to go through a broker. You’ll pay a brokerage fee or commission, but may have more flexibility if you need to withdraw funds before maturity. Ask your broker for details—and verify that the CD or certificate is insured. When you use a credit union member of the National Credit Union Administration (NCUA), your investment of up to $250,000 is protected by federal insurance. Same goes for banks with Federal Deposit Insurance Corporation (FDIC) coverage.

Now the second answer to "How does a certificate of deposit work?" question—how your money makes more money. The money you earn on your CD or share certificate is the called the annual percentage yield (APY). There are two types of interest: simple and compound. Simple interest is paid only on the principal you initially invested. Compound interest adds in the money that has been earned. Good news: CDs and share certificates usually earn compound interest, so you’ll earn more money over time.

Try experimenting with the certificate of deposit calculator below to see what kind of gains you can make over the next 5-60 months. To use the certificate of deposit calculator, just input your initial investment, the interest rate, the amount of months you want to save, and watch the hypothetical money roll in!

Because they are federally insured, CDs and share certificates offer very little risk. The only hit you’ll take is if you need to withdraw money before your term is up. Early withdrawal penalties vary, but generally require you to forfeit a portion of your earned interest. For instance, if you have a 3 month term and withdraw early, a realistic penalty is 1 month’s interest. For a 3-12 month term, it’s likely 3 months’ interest. For 12-24 months, you’ll forfeit 6 months’ interest, and so forth.

The other risk is tied to the uncertain nature of interest rates. You could lock in a CD or share certificate at a certain interest rate and then find that rates go up (even substantially). This can work in your favor, too, with rates dropping while you are guaranteed a higher return.