ROI Calculator
| Metric | Investment A | Investment B |
|---|---|---|
| Net Profit | $3,500.00 | $2,500.00 |
| ROI | 35.00% | 50.00% |
| Annualized ROI | 35.00%/yr | 22.47%/yr |
What Is Return on Investment (ROI)?
Return on Investment (ROI) is one of the most widely used financial metrics for evaluating the efficiency and profitability of an investment. It expresses the gain or loss from an investment as a percentage of the original investment amount, making it easy to compare investments of different sizes and across different asset classes.
The ROI Formula
ROI % = (Net Profit ÷ Initial Investment) × 100
Net Profit = Final Value − Initial Investment
Example: You invest $10,000 in a stock and sell it for $13,500 one year later.
Annualized ROI (CAGR)
Total ROI is misleading when comparing investments with different time horizons. A 35% ROI over 1 year is dramatically better than 35% ROI over 5 years. Annualized ROI — also called Compound Annual Growth Rate (CAGR) — normalizes the return to a per-year basis for meaningful comparison.
Annualized ROI = (Final Value ÷ Initial Value)^(1 ÷ Years) − 1
Example: $10,000 grows to $13,500 over 3 years.
The same $3,500 total profit becomes 10.57% per year rather than 35%, because it took three years to generate. This is closer to the S&P 500's historical average and therefore less impressive than a one-year 35% return.
ROI Benchmarks by Asset Class
| Asset Class | Historical Average Annual ROI | Risk Level |
|---|---|---|
| US Savings Account (2025) | 4.5–5.0% | Very Low |
| US Treasury Bonds (10yr) | 4.0–4.5% | Low |
| S&P 500 Index | ~10% (7% real) | Medium |
| Real Estate (US, incl. income) | 8–12% | Medium |
| Small Business | 15–30%+ | High |
| Venture Capital | 15–25% (top funds) | Very High |
| Bitcoin (10-year avg) | ~100%+ | Extreme |
Higher expected returns always come with higher risk. A guaranteed 5% return from a Treasury bond is worth more in certainty-adjusted terms than a 10% return with significant volatility. When comparing ROIs, always consider the risk-adjusted return.
Business ROI Examples
ROI is not just for financial instruments. Businesses use it to evaluate capital expenditures, marketing campaigns, hiring decisions, and equipment purchases.
| Business Investment | Cost | Projected Return | ROI |
|---|---|---|---|
| New employee (year 1) | $75,000 | $100,000 revenue | 33% |
| Google Ads campaign | $5,000 | $18,000 sales | 260% |
| CRM software | $3,600/yr | $15,000 efficiency gains | 317% |
| New equipment | $50,000 | $65,000 additional profit | 30% |
| Training program | $10,000 | $12,000 productivity gain | 20% |
Marketing ROI should account for the full customer lifetime value (LTV), not just the first sale. A $5,000 campaign that generates 50 new customers at a $100 average first purchase ($5,000 total) looks like a 0% ROI, but if those customers have a $360 LTV (3 years × $120/yr), the actual ROI is much higher.
Limitations of ROI
ROI is a powerful but incomplete metric:
- Ignores time: Use annualized ROI or CAGR when comparing across different time horizons.
- Ignores risk: Two investments with identical ROI but different volatility are not equally desirable. Use the Sharpe ratio for risk-adjusted comparison.
- Ignores ongoing cash flows: For investments with annual dividends or rent, use IRR (Internal Rate of Return) to properly account for all cash flows.
- Ignores taxes: A 35% pre-tax ROI on a short-term trade may become a 22–28% after-tax return. Always compare on an after-tax basis.
- Can be gamed: ROI is easily manipulated by changing what is included in "investment" or "return." Always verify the inputs behind any ROI claim.
Frequently Asked Questions
What is ROI and how is it calculated?
ROI (Return on Investment) measures the gain or loss from an investment relative to the amount invested. Formula: ROI % = (Net Profit ÷ Initial Investment) × 100, where Net Profit = Final Value − Initial Investment. A $10,000 investment that grows to $13,500 produces a net profit of $3,500 and an ROI of 35%. ROI is expressed as a percentage to make comparisons across investments of different sizes possible.
What is annualized ROI and when should I use it?
Annualized ROI (also called Compound Annual Growth Rate or CAGR) adjusts the total ROI for the time period, expressing the equivalent annual return. Formula: Annualized ROI = (Final Value ÷ Initial Value)^(1 ÷ Years) − 1. A 35% total ROI over 1 year gives a 35% annualized ROI, but the same 35% total ROI over 3 years gives only a 10.5% annualized ROI. Use annualized ROI when comparing investments with different time horizons — raw total ROI can be misleading if one investment ran for 1 year and another for 5 years.
What is a good ROI?
Context is everything. The S&P 500 has averaged roughly 10% annual ROI historically (7% after inflation). Real estate has averaged 8–12% annually including rental income. Savings accounts currently yield 4–5%. Business investments vary enormously — a marketing campaign with 200% ROI in 6 months is excellent; the same 200% ROI over 10 years from a business is modest. The relevant benchmark is always the opportunity cost: what would the money have earned in the next-best alternative?
What are the limitations of ROI?
ROI does not account for time (which is why annualized ROI exists), risk, or the complexity of multi-year cash flows. It ignores factors like liquidity (can you exit the investment?), opportunity cost (what else could the money do?), and non-financial returns (brand value, employee satisfaction). For capital budgeting decisions, more sophisticated measures like NPV (Net Present Value) and IRR (Internal Rate of Return) are preferred because they account for the time value of money across each year.
How is ROI different from profit margin?
ROI measures return relative to the capital invested; profit margin measures return relative to revenue. A business with $1M revenue and $100K profit has a 10% net margin. If the business required $500K of invested capital, its ROI is 20% ($100K ÷ $500K). ROI evaluates efficiency of capital deployment; profit margin evaluates efficiency of revenue generation. Both metrics matter: a business can have healthy margins but poor ROI if it requires enormous capital to produce modest profits.
Related Calculators
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