A certificate of deposit (CD) allows you to earn high interest rates by agreeing to leave money in the bank for a specified amount of time.
The length of a CD can vary, but anywhere between six months and five years is common. The minimum deposit is often $500. In investment terms, the money you put in is known as your principal. The length of the CD is its term, and the time it matures, or ends, is its date of maturity.
The interest rate and annual percentage yield (described below) determine how much you earn on a CD. Generally, a longer term gets a higher rate. Rates can also vary a lot from year to year.
You can get CDs through almost any bank or credit union. Many people use a local bank or credit union for convenience.
When a CD matures, you generally have a time limit to decide what to do with the money. If you wait too long, the bank usually rolls over, or reinvests, your money in another CD for the same term at the current rate.
If you would like to cash the CD, you can ask the bank to sweep or move the money into your accounts, transfer it to another bank, or send you a check.
You can also buy a CD through a stockbroker, but you will likely have to pay some sort of fee or commission. With a brokered CD, you can usually sell it without penalty if you need to get your money out early. But you may have to sell it for less than the principal you invested. Be sure that the brokered CD is insured before investing.
Be very cautious about buying liquid CDs that claim you can make early withdrawals without fees. There are often restrictions that make these CDs less flexible than they appear.
What you actually earn on your CD is the yield— specifically the annual percentage yield (APY). The yield depends on whether the interest is simple or compound, and how often it's compounded.
Simple interest is paid only on the principal you initially invested. Compound interest adds in the money that has been earned. To compare the two, try entering different amounts into the tool below.
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