How to Calculate Compound Interest in Excel: A Step-by-Step Guide

In this tutorial, we will be using Excel’s built-in financial functions to easily calculate compound interest for various scenarios. By the end of this tutorial, you will be able to use Excel to calculate compound interest for loans, savings accounts, and investments.

What is Compound Interest?

Compound interest is calculated on the initial principal amount and also on the accumulated interest from previous periods. It means that the interest earned in one period is added to the principal, and the next period’s interest is calculated based on the new, higher principal amount. This process continues over time, leading to a much larger total amount than simple interest, where the interest is calculated only on the original principal amount.

Calculating Compound Interest

The formula for calculating compound interest is:

A = P(1 + r)^t


A = the final amount (principal + interest)

P = the principal amount (initial investment)

r = the annual interest rate (expressed as a decimal)

t = the number of years the investment is held for

Step-by-step instructions

  1. In a new cell, enter the formula “=P*(1+R)^T“, where P is the principal, R is the interest rate, and T is the number of years.
  2. Reference the appropriate cells in the formula (e.g., “=B3*(1+B4)^B5”).
  3. Press Enter to calculate the formula.


Calculating compound interest in Excel is a straightforward process that can be done using a simple formula. By referencing the appropriate cells for the principal, interest rate, and number of years, you can easily calculate the compound interest and final amount for any investment scenario. This can help you compare different investment options and make more informed decisions about your financial goals.