ROI Calculator

Enter your upfront investment, the annual revenue it generates, and any ongoing annual costs. The calculator computes your total ROI over your chosen time horizon, plus your annualized return and payback period.

ROI formula: ROI = ((Annual Revenue − Annual Costs) × Years) ÷ Initial Investment × 100. A 20% ROI over 3 years means you earn 20 cents of net profit for every dollar invested over that period.

Payback period: How many months or years until your cumulative net profit covers your upfront investment. The chart shows exactly when you cross the break-even line.

Annualized ROI: Total ROI divided by the number of years, making it easy to compare investments with different time horizons on equal footing.

Equipment purchases: A new piece of machinery costs $25,000 but saves $10,000/year in labor — what's the 5-year ROI?

Marketing campaigns: Spent $5,000 on Google Ads, expected to generate $18,000 in revenue with $3,000 in fulfillment costs — is the campaign ROI positive?

Hiring decisions: A new sales rep costs $80,000/year fully loaded — how much revenue do they need to generate to produce a 20% ROI?

Software subscriptions: An $8,000/year SaaS tool saves 5 hours/week at $60/hr effective cost — does the ROI justify the spend?

What ROI Doesn't Capture

ROI is powerful but incomplete. It doesn't account for the time value of money (a dollar today is worth more than a dollar in three years), risk, or opportunity cost. For large capital investments, consider NPV (Net Present Value) or IRR (Internal Rate of Return) alongside ROI. For quick decisions on smaller investments, ROI is usually sufficient.

ROI vs. Your Cost of Capital

The most important benchmark is your cost of capital — what you pay to borrow money or what you could earn with an alternative investment. If you can borrow at 8% interest, any investment with a positive ROI isn't necessarily good; it needs to beat 8% to actually create value. If your ROI is 6% and your cost of capital is 8%, you're destroying value even though ROI is technically positive.

Payback Period as a Risk Measure

Shorter payback periods are generally lower risk because the world changes. A 6-month payback means you recover your investment before much can go wrong. A 5-year payback exposes you to competitive disruption, market shifts, technology changes, and economic downturns. As a rule of thumb: payback under 2 years is low risk, 2–4 years is moderate, 4+ years requires strong conviction about long-term conditions.

Common ROI Mistakes

Forgetting to include all costs: many ROI calculations miss setup time, training, disruption during transition, and ongoing support. Overestimating revenue: use conservative projections (what's realistic, not best-case). Ignoring risk: two investments with identical ROIs are not equal if one has much higher uncertainty. Always build in a margin of safety.