Return on investment calculator

Page written by Ian Hawkins. Last reviewed on March 6, 2026. Next review due April 6, 2027.

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This calculator is intended for illustration purposes only and exact payment terms should be agreed with a lender before taking out a loan.

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Return on investment

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How to calculate return on investment

The formula for calculating ROI is "ROI = Net income / Cost of investment x 100"

To calculate Return on Investment (ROI), you’ll need the following information:

  1. Initial Investment (Cost): This is the amount of money you initially invest in a project, venture, or asset.

  2. Final Value (or Earnings): This is the total value or earnings generated from the investment.

The formula for ROI is:

ROI = Net income / Cost of investment x 100

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