Does ROI include the time value of money?

This simple version does not discount future cash flows. For multi-year projects, analysts often use IRR or NPV; this tool is best for quick before-and-after comparisons.

What if initial investment is zero?

ROI is undefined when the denominator is zero. Enter a positive initial amount that reflects your cash outlay or fully loaded cost.

Yes. If the final value is below the initial investment, ROI is negative, indicating a loss relative to what you put in.

ROI Calculator

Measure percentage return from an initial investment to a final value—ideal for quick go/no-go checks on spend.

Investment

ROI compares net gain to the amount originally invested.

Initial investment ($)

Final value ($)

Return on investment

35.00%

Net gain: $1750.00

Formula

ROI = (Final − Initial) ÷ Initial × 100

Initial: $5000.00
Final: $6750.00

Using ROI in business decisions

Return on investment expresses gain or loss relative to what you risked. It is a common language for comparing a new laptop, a marketing experiment, or a training program—provided the inputs are honest. Use fully loaded costs (purchase, install, subscription fees) and realistic outcomes (incremental revenue, hours saved valued at a burdened rate).

Pair ROI with other tools on this site: the break-even calculator for volume targets and the profit margin calculator for pricing power. For strategic context, browse what is return on investment in our accounting hub.

Frequently Asked Questions

Turn returns into steady cash

Track invoices and expenses in Billed so you can see whether investments actually show up in collected revenue.

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