CD Interest Calculator

Certificate of Deposit Calculator

Estimate the ending balance and interest earned on a certificate of deposit using your deposit, rate, and term.

CD Interest Calculator

$

Enter an amount between $1 and $10,000,000.

Quick amount
Rate Type
%
Quick rate
CD Term
Compounding
Included in APY

APY already accounts for compounding.

Your CD Return

Ending Balance
$10,450.00
Initial Deposit
$10,000.00
Interest Earned
+$450.00
Total Return
4.50%

A $10,000 CD earning 4.50% APY for 12 months would grow to approximately $10,450.00, including $450.00 in interest.

Estimates are based on the information you enter and may differ from the actual amount paid by a bank.

Balance Growth

Balance growth chartThe balance grows from $10,000.00 at the start to approximately $10,450.00 over 12 months.$10.5K$10.3K$10.1K$9.9KStartMonth 6Month 12

Compare CD Rates

How different rates affect your balance over the same term.

CD rate comparison using your deposit and term
APYInterest EarnedEnding Balance
4.00%$400.00$10,400.00
4.50%Current$450.00$10,450.00
5.00%$500.00$10,500.00
5.50%$550.00$10,550.00

Compare CD Terms

How your balance changes across common CD terms at your current rate.

CD term comparison using your deposit and rate
TermInterest EarnedEnding Balance
3 months$110.65$10,110.65
6 months$222.52$10,222.52
12 monthsCurrent$450.00$10,450.00
24 months$920.25$10,920.25
36 months$1,411.66$11,411.66
60 months$2,461.82$12,461.82

Certificate of Deposit Basics

A certificate of deposit is a savings product with a fixed term and usually a fixed interest rate. You agree to keep your deposit with the bank or credit union until maturity, and the institution pays interest in return. Terms commonly range from a few months to five years or more.

Because the rate and term are typically fixed, a CD can make it easier to estimate your ending balance in advance. The estimate is not a guarantee, but it gives you a useful starting point for comparing CD offers.

How to Calculate Certificate of Deposit Earnings

Enter your initial deposit and choose whether you know the APY or a nominal interest rate. Select the CD term, and the calculator will apply the appropriate formula to estimate your ending balance and interest earned. The detailed breakdown shows how the balance changes period by period.

If you are comparing offers, the rate and term tables can help you see how different options affect the same deposit amount. For more focused tools, visit the CD APY Calculator or the CD Calculator.

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