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Free CD Calculator
Calculate the interest and maturity value of a certificate of deposit.
What is the CD Calculator?
Calculate the interest and maturity value of a certificate of deposit.
The deposit grows at the stated rate for the chosen number of months using your compounding option. The results give interest earned, average interest per month, the effective annual yield (APY) and the value at maturity.
Time and consistency do most of the work in saving and investing. Running the numbers shows how small changes in rate, term or contribution add up.
How to use the CD Calculator
Using the cd calculator takes a minute or two. Your entries are saved in this browser, so you can come back later and carry on.
Step 1
Enter your starting amount, regular contribution, expected return and time period.
Step 2
Read the end value and the split between money you put in and growth.
Step 3
Try a lower return as well as a higher one, because real markets are uneven.
Tips for better results
Compare CDs by APY and term, and check the penalty for early withdrawal. Consider splitting money across different terms if you may need access.
Treat the result as an illustration, not a promise. Returns vary year to year.
Fees and inflation reduce real growth, so consider both when planning.
Privacy and where your data goes
Everything you type into the cd calculator stays on your own device. Zapxa does not receive your numbers or documents. If you clear your browser data, your saved entries will be removed, so download a PDF of anything you want to keep.
Frequently asked questions
Does the CD pay interest when it matures?
This calculator reinvests interest through compounding and shows the total at maturity. Some CDs pay interest out instead, which would reduce compounding.
Is the interest taxable?
In many places interest is taxable income, but rules vary by country, so this tool shows pre-tax amounts only.
Is the cd calculator free?
Yes. It is free to use with no signup, no watermark and no usage limits.
Is my data private?
Yes. Your inputs are processed in your browser and saved only in its local storage. They are not uploaded to our servers.
Does it work on mobile?
Yes. Zapxa works on phones, tablets and desktops. Use the print button or download a PDF to keep a copy.
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