Certificate of Deposit Rate Calculator

Calculate CD Interest and APY at maturity.

Special Instructions

Learn More

Selected Data Record:

A Data Record is a set of calculator entries that are stored in your web browser's Local Storage. If a Data Record is currently selected in the "Data" tab, this line will list the name you gave to that data record. If no data record is selected, or you have no entries stored for this calculator, the line will display "None".

DataData recordData recordSelected data record: None
CD amount:CD amount:Certificate of deposit amount:Certificate of deposit amount:

Certificate of deposit amount:

Enter the amount of the CD (without dollar sign and commas). Most certificates of deposit require a minimum deposit amount of $500 or more.

Int rate:Interest rate:Annual interest rate:Annual interest rate:

Annual interest rate:

Enter the annual interest rate (APR) of the CD. Enter as a percentage without the percent sign (for 2.5%, enter 2.5).

# months:# of months:Number of months:Number of months:

Number of months

Enter the number of months before the CD reaches its maturity date.

Compound:Compounding:Compounding interval:Compounding interval:

Compounding interval:

Select the compounding interval that applies to the certificate of deposit. Typically, the more frequent the compounding, the more interest you will earn in a given amount of time.

FV:Future value:Future value:Future value:

Future value:

Based on your entries, this how much your certificate of deposit will be worth when it reaches its maturity date.

Interest:Interest earned:Interest earned:Interest earned:

Interest earned:

Based on your entries, this is the amount of interest you will earn on the CD.

APY:APY:Annual percentage yield:Annual percentage yield:

Annual percentage yield:

Given the number of months and interest rate, this is the annual percentage yield (APY) of the certificate of deposit.

APY (also know as Effective Annual Rate, or EAR) is a formula used by investors to compare one quoted interest rate with another -- because savings institutions like to quote their interest rates in ways that make them appear higher than they actually are. The APY formula allows investors to compare apples to apples -- regardless of the method used to quote the rates.

If you would like to save the current entries to the secure online database, tap or click on the Data tab, select "New Data Record", give the data record a name, then tap or click the Save button. To save changes to previously saved entries, simply tap the Save button. Please select and "Clear" any data records you no longer need.

Help and Tools


What CD's are, how they work, and where you can purchase them.

What is a CD?

A CD (Certificate of Deposit) is similar to a regular saving account in that your funds are federally insured against loss (up to as much as $250,000). But unlike a regular savings account, when you deposit money into a CD you agree to leave the deposit untouched for a specified length of time -- usually stated in the number of months.

In exchange for this agreement, you will normally earn a higher rate of interest on certificates of deposit than you would on a regular savings account. And the longer you agree to leave the CD untouched, the higher the interest rate you can expect to earn.

How Long Must I Agree To Leave the CD Untouched?

The length of time you agree to leave the certificate untouched is up to you. You can usually choose any number of months between 1 and 120 months. However, regardless of which length of time you choose, if you withdraw the CD before it matures you may be assessed an early withdrawal penalty, or end up forfeiting some or all of your interest earnings. And if that happens, you might have been better off depositing the funds into a regular savings account, since a smaller interest rate is better than no interest earnings at all.

Is Investing in CD's Complicated?

Not at all. Investing in a CD is perhaps the easiest of all investments -- which makes them one of my personal favorites. But of course, like any other type of investment, the savings institutions are working hard to complicate certificates of deposit to the point of needing an investment advisor to guide you. You can now choose between fixed, variable, and special feature CDs. Variable CDs allow savings institutions to entice CD investors in with higher interest rates, leaving the door open to lower the rates later.

Where Can I Purchase a CD?

While most people purchase certificates of deposit from banks, which is usually the safest way to purchase them, you can also purchase CDs from "Deposit Brokers." Deposit brokers can offer higher interest rates on brokered CDs because they negotiate bulk-purchase deals with institutions in exchange for bringing in a large group of CD investors. However, as with any other type of investments, higher rates of returns usually comes with higher risk, so be sure to do your homework before making the purchase.

Where can I Get Unbiased Information?

For an in-depth, unbiased description of certificates of deposit, be sure to check out the U.S. Securities and Exchange Commission's report titled, "High-Yield CDs: Protect Your Money By Checking the Fine Print."

Adjust Calculator Width:

Move the slider to left and right to adjust the calculator width. Note that the Help and Tools panel will be hidden when the calculator is too wide to fit both on the screen. Moving the slider to the left will bring the instructions and tools panel back into view.

Also note that some calculators will reformat to accommodate the screen size as you make the calculator wider or narrower. If the calculator is narrow, columns of entry rows will be converted to a vertical entry form, whereas a wider calculator will display columns of entry rows, and the entry fields will be smaller in size ... since they will not need to be "thumb friendly".

Show/Hide Popup Keypads:

Select Show or Hide to show or hide the popup keypad icons located next to numeric entry fields. These are generally only needed for mobile devices that don't have decimal points in their numeric keypads. So if you are on a desktop, you may find the calculator to be more user-friendly and less cluttered without them.

Stick/Unstick Tools:

Select Stick or Unstick to stick or unstick the help and tools panel. Selecting "Stick" will keep the panel in view while scrolling the calculator vertically. If you find that annoying, select "Unstick" to keep the panel in a stationary position.

If the tools panel becomes "Unstuck" on its own, try clicking "Unstick" and then "Stick" to re-stick the panel.