ROI Calculator

Estimate return on investment, net profit, total return, annualized ROI, and gain based on investment cost, final value, additional income, and time held.

Calculate ROI

ROI = (net gain ÷ total investment cost) × 100. Net gain = final value + additional income − initial investment cost − additional costs.
Your result will appear here.

How the ROI calculator works

Net gain:
The calculator adds final value and additional income, then subtracts the initial investment and additional costs.

ROI percentage:
ROI is calculated by dividing net gain by total investment cost.

Annualized ROI:
The total return is converted into an estimated yearly return for easier comparison.

After-tax result:
The tax rate entered is applied to positive gains for a simple after-tax estimate.

Why ROI matters

ROI helps compare investments, marketing spend, equipment purchases, and business projects by showing how much return was generated relative to cost.

This tool is especially useful when comparing projects with different sizes and profit outcomes.

What your result means

Your result shows net gain, total ROI, annualized ROI, after-tax gain, and total return based on the values entered.

ROI calculator tips

Frequently asked questions

What is ROI?

ROI, or return on investment, measures the gain or loss generated relative to the amount invested.

What is annualized ROI?

Annualized ROI converts the total return into an estimated yearly rate so investments can be compared across different time periods.

Can ROI be negative?

Yes. If total costs are greater than the final value plus income received, ROI will be negative.

Is ROI enough to evaluate every investment?

No. ROI is useful, but it should often be reviewed alongside risk, time, taxes, and cash flow timing.