Return on Investment Calculator

Compare an investment's estimated gain with its complete cost.

Method and required inputs

Include purchase price, implementation, financing, maintenance, taxes, and opportunity cost when relevant. ROI does not show timing or risk by itself, so also review payback period and cash flow.

Return on investment divides net gain by the complete amount invested. Net gain should subtract acquisition, implementation, financing, operating, maintenance, tax, and exit costs that are attributable to the decision rather than comparing revenue with purchase price alone.

Read the complete result

Use the same measurement period when comparing options. A 20% return earned over five years is not equivalent to 20% earned in one year. Pair ROI with cash flow, payback period, and the timing of each cash movement when timing matters.

Run a stress case

Stress revenue, resale value, cost overruns, downtime, and financing rates. If a small change reverses the conclusion, the decision has little margin for error. Compare the result with the return available from a lower-risk use of the same capital.

Limits and verification

ROI can hide leverage, liquidity, volatility, and the chance of permanent loss. Taxes and depreciation rules depend on the asset and taxpayer. The estimate is educational and should not be treated as an investment recommendation.

This calculator is educational, not a quote, approval, guarantee, tax opinion, or individualized recommendation. Confirm material figures, current rules, and actual product terms before acting.

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