What is Return on Investment (ROI)?

ROI is a financial ratio comparing net profit to the total cost of an investment, expressed as a percentage to measure profitability.

What is the formula for calculating ROI?

ROI = (Net Profit / Total Cost) × 100, where Net Profit equals Final Value minus Total Cost.

What is annualized ROI and why is it important?

Annualized ROI adjusts the total return for the holding period, converting it into a yearly rate. It allows direct, fair comparisons of investments held over different lengths of time.

Yes. If the final value of the investment is lower than the total cost (due to asset depreciation, fees, or capital loss), the net profit and ROI will be negative.

Are taxes included in ROI calculations?

This calculator projects pre-tax ROI. Since capital gains taxes reduce net returns, you should subtract expected tax liabilities to find your after-tax ROI.

How do holding costs affect my ROI?

Holding costs (like maintenance, storage, or interest) increase the total cost base of the investment, which directly reduces net profit and lowers your ROI percentage.

What is a good ROI for an investment?

A "good" ROI depends on asset class and risk. For example, stock indexes have averaged 7-10% annually, real estate returns range from 6-12%, while high-risk startups target 50-100%+

What is the cash-on-cash return?

Cash-on-cash return is a real estate metric that compares the annual pre-tax cash flow to the actual cash invested (rather than total purchase price including mortgages).

Does ROI account for the time value of money?

No. Absolute ROI only measures total return. To account for time, you must calculate the Annualized CAGR (Annualized ROI).

Why is annualized ROI usually lower than absolute ROI?

Absolute ROI reports the total return over the entire holding period, however long that was. Annualized ROI compresses that same total return into a single-year equivalent rate, which is almost always a smaller number once the holding period exceeds one year — the longer the period, the bigger the gap between the two figures.

How should I use ROI when comparing two different investments?

Always compare annualized ROI, not absolute ROI, when the two investments were held for different lengths of time. A 20% absolute ROI over 6 months is a far stronger result than a 20% absolute ROI over 5 years, and only the annualized figure makes that difference visible.

finance calculator

ROI Calculator

Measure return on investment by calculating gain, loss, and annualized performance for any investment or business decision.

Return on investment is (gain − cost) ÷ cost, expressed as a percentage. Annualized ROI adjusts for holding period: (ending ÷ beginning)^(1/years) − 1. An investment bought for $10,000 and sold for $13,500 has a 35% total ROI, which over 3 years annualizes to about 10.5% per year.

Formula Verified by Dr. Elizabeth Vance, PhD

Quick actions: Save inputs, view saved runs, print, share, or export results

Saved Runs

Inputs

Mode

Initial investment$

Final value$

Additional costs$

Durationmonths

Benchmark annual return (e.g. S&P 500)%

Results

ROI

42.86%

Net profit$45,000

Annualized ROI19.52%

Total cost$105,000

Duration24 months

Compare against a benchmark (10%/yr)

This investment's net profit$45,000

Benchmark net profit$22,050

Outperformance vs. benchmark

$22,950

Tip

Save this page to evaluate new opportunities, compare investment options, or check how leverage affects your return on equity.

Formula

ROI, annualized ROI & ROE formulas

ROI = (Gain − Cost) ÷ Cost × 100. Annualized ROI = (Gain ÷ Cost)^(1/Years) − 1. ROE = Net Profit ÷ Equity × 100.

ROI compares profit to total cost. Annualized ROI adjusts for holding period so investments of different lengths can be compared fairly. ROE isolates the return on equity alone, excluding debt.

Step by step

How the calculation works

1Choose Calculate ROI, Compare Investments, or ROI vs ROE mode.
2Calculate ROI: enter your cost, final value, extra costs, and duration to see ROI, annualized ROI, and a benchmark comparison.
3Compare Investments: enter two scenarios — even with different holding periods — and see which wins on annualized ROI.
4ROI vs ROE: enter your total investment, the equity portion, and net profit to see how debt (leverage) changes your real return.

Related guides

Learn more about this calculation

Guide

ROI Calculation: Formula, Annualized Return, and Examples

Calculate ROI and annualized return with total costs included, compare opportunities consistently, and understand what a simple ROI result leaves out.

Guide

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Compare market, income, and asset valuation methods, normalize revenue and profit, and use multiples as a planning range rather than a formal appraisal.

CAGR

CAGR Calculator

Calculate compound annual growth rate, future value, and initial value for any investment.

Compound Interest

Compound Interest Calculator

Model compound growth with regular deposits and different compounding frequencies.

Investment Growth

Investment Calculator

Project compound growth of your investments with regular contributions and time horizon.

Stock Profit

Stock Profit Calculator

Calculate stock trade profit, loss, fees, and return on investment.

Profit Margin

Profit Margin Calculator

Calculate profit margin, markup, and gross profit for business decisions.

Bond Yield

Bond Yield Calculator

Calculate yield to maturity, current yield, and absolute return for fixed-income investments.

ROI Calculator

Measure return on investment by calculating gain, loss, and annualized performance for any investment or business decision.

Formula Verified by Dr. Elizabeth Vance, PhD

How to understand and use this calculator

Quick Answer

What is ROI? ROI (Return on Investment) is a measure of investment profitability. It compares the net gain from an investment to its cost.

The formula: ROI = (Gain − Cost) ÷ Cost × 100

Simple example: Investment = $10,000, Final Value = $13,000, Gain = $3,000.

ROI = ($13,000 − $10,000) ÷ $10,000 × 100 = 30%

Decision rule:

ROI > 0 = profitable investment
ROI < 0 = unprofitable investment
Higher ROI = better investment (all else being equal)

Use the ROI Calculator

To use the ROI calculator:

1. Choose Calculate ROI, Compare Investments, or ROI vs ROE mode.

2. Enter the invested amount (cost) and returned amount (gain) — or, for comparisons, two full scenarios.

3. Review the ROI percentage, profit, and step-by-step work.

Example input: Invested Amount = $10,000, Returned Amount = $13,000.

Output: ROI = 30.00% • Net Profit = $3,000 • Step-by-step work: ($13,000 − $10,000) ÷ $10,000 × 100 = 30%.

Another example (negative ROI): Invested Amount = $10,000, Returned Amount = $8,000.

Output: ROI = -20.00% • Net Loss = -$2,000 • Step-by-step work: ($8,000 − $10,000) ÷ $10,000 × 100 = -20%.

What is ROI?

ROI (Return on Investment) is a financial metric that measures the profitability of an investment. It compares the amount you gain from an investment to the amount you invested.

In simple terms: ROI tells you how much profit you made relative to what you put in.

Key points:

ROI is expressed as a percentage
ROI > 0 means the investment made money
ROI < 0 means the investment lost money
Higher ROI is better (all else being equal)

Why ROI is important: it measures investment efficiency, lets you compare different investments, is simple and easy to understand, and is used across industries.

Example: you invest $100,000 in a business and receive $120,000 back. ROI = ($120,000 − $100,000) ÷ $100,000 × 100 = 20%.

The ROI Formula

The ROI formula is simple and powerful:

ROI = (Gain − Cost) ÷ Cost × 100

Or more simply: ROI = (Net Profit ÷ Cost) × 100

Gain = amount received from the investment (final value)
Cost = amount invested (initial value)
Net Profit = Gain − Cost

Expanded example: Gain = $13,000, Cost = $10,000, Net Profit = $3,000, ROI = (Net Profit ÷ Cost) × 100 = 30%.

How to Calculate ROI — Step by Step

How to calculate return on investment is simple when you follow these steps:

Step 1: Identify the cost (initial investment) → Cost = $10,000.

Step 2: Identify the gain (final value) → Gain = $13,000.

Step 3: Calculate the net profit → Net Profit = Gain − Cost = $13,000 − $10,000 = $3,000.

Step 4: Divide net profit by cost → $3,000 ÷ $10,000 = 0.30.

Step 5: Multiply by 100 → 0.30 × 100 = 30%.

Answer: ROI = 30%.

Worked Examples

Example 1 — Real Estate Investment. You buy a property for $600,000 and sell it 3 years later for $900,000. Net Profit = $900,000 − $600,000 = $300,000. ROI = ($300,000 ÷ $600,000) × 100 = 50%. For a deeper property-specific breakdown, try the House Flipping Calculator.

Example 2 — Marketing Campaign. You invest $250,000 in a marketing campaign, generating $400,000 in gross returns over 2 years. Net Profit = $400,000 − $250,000 = $150,000. ROI = ($150,000 ÷ $250,000) × 100 = 60%.

Example 3 — Stock Investment. You buy 150 shares at $12.67 per share (Cost = 150 × $12.67 = $1,900.50) and sell them at $15.23 per share (Gain = 150 × $15.23 = $2,284.50). Net Profit = $2,284.50 − $1,900.50 = $384.00. ROI = ($384 ÷ $1,900.50) × 100 = 20.21%. For fees and break-even pricing on stock trades specifically, try the Stock Profit Calculator.

How to Use This as an Investment Growth Calculator

This calculator also works as an investment growth calculator. Scenario: $10,000 invested at 8% annual return over 5 years.

Year 1: $10,000 → $10,800 (+$800)
Year 2: $10,800 → $11,664 (+$864)
Year 3: $11,664 → $12,597 (+$933)
Year 4: $12,597 → $13,605 (+$1,008)
Year 5: $13,605 → $14,693 (+$1,088)

Total ROI = ($14,693 − $10,000) ÷ $10,000 × 100 = 46.93%. Annualized ROI = 8%.

Use "Calculate ROI" mode above with a duration of 60 months to model your own growth scenario against a benchmark, or use the Compound Interest Calculator to model regular contributions on top of your starting balance.

How to Use This as an Index Fund Calculator

An index fund calculator shows returns from a diversified portfolio. S P 500 historical average returns (illustrative, ~10%/year):

10 years: ~10%/year → $10,000 grows to roughly $25,937
20 years: ~10%/year → $10,000 grows to roughly $67,275
30 years: ~10%/year → $10,000 grows to roughly $174,494

Example: $10,000 in an index fund for 10 years at a 10% average return. Final Value ≈ $25,937. ROI = ($25,937 − $10,000) ÷ $10,000 × 100 = 159.37%. Annualized ROI = 10%. Project your own contribution schedule with the Investment Calculator, or find the annualized rate behind any two values with the CAGR Calculator.

ROI vs ROE — What's the Difference?

Definition: ROI is return on total investment. ROE (Return on Equity) is return on shareholders' equity only.

What it measures: ROI measures profit relative to total cost. ROE measures profit relative to equity.

Includes debt? ROI includes total investment (yes). ROE only considers equity (no).

Used by: ROI is used by investors and businesses generally. ROE is used more by shareholders and analysts.

Example: a company invests $1,000,000 (including $600,000 equity and $400,000 debt) and earns a net profit of $200,000.

ROI = $200,000 ÷ $1,000,000 × 100 = 20%
ROE = $200,000 ÷ $600,000 × 100 = 33.33%

Key insight: ROE is usually higher than ROI because it only considers equity, not debt. Switch to "ROI vs ROE" mode above to model your own capital structure.

ROI Advantages and Disadvantages

Advantages of ROI:

Simple to calculate: easy formula with readily available data
Easy to interpret: clear percentage result
Comparable: lets you compare across investments
Versatile: used in many industries
Quick decisions: fast assessment of profitability

Disadvantages of ROI:

Ignores time: doesn't account for investment duration on its own
Ignores risk: two investments with the same ROI can carry very different risk
Can be manipulated: different approaches to measuring gain and cost
Short-term focus: may encourage short-term thinking
No context: doesn't show how the ROI was achieved

Example of the time issue: Investment A returns 20% ROI in 1 year. Investment B returns 20% ROI in 4 years. Both show the same 20% ROI, but A is clearly the better investment once annualized. Use "Compare Investments" mode above to see this side by side.

How to Make Better Investment Decisions with ROI

Basic decision rule: ROI ≥ 0 = profitable. ROI < 0 = unprofitable.

Advanced decision criteria:

ROI ≥ 0 — simple profit/loss decision
ROI ≥ industry average — compare to competitors
ROI ≥ WACC — compare to your cost of capital
ROI ≥ target return — compare to your own goals

What is WACC? WACC (Weighted Average Cost of Capital) is the average rate of return a company expects to pay its investors. If ROI < WACC, the investment destroys value. Calculate your own with the WACC Calculator.

Example: Investment ROI = 8%, WACC = 10%. Since ROI < WACC, the investment is NOT creating value, even though it is technically profitable.

Real-World ROI Examples

Real Estate: Purchase $250,000 → Sale $325,000 → Net Profit $75,000 → ROI 30%

Marketing Campaign: Budget $100,000 → Additional Revenue $180,000 → Net Profit $80,000 → ROI 80%

Stock Investment: Investment $5,000 → Final Value $6,500 → Net Profit $1,500 → ROI 30%

Business Expansion: Equipment Cost $500,000 → Additional Annual Revenue $650,000 → Net Profit $150,000 → ROI 30%. Check the resulting margin on that extra revenue with the Profit Margin Calculator.

Index Fund: Investment $10,000 → 5 Years Later $16,105 → ROI 61.05% → Annualized ROI 10%

Practice Problems

Problem 1: You invest $50,000 in a business and receive $65,000 back. What is the ROI? Solution: Net Profit = $65,000 − $50,000 = $15,000. ROI = ($15,000 ÷ $50,000) × 100 = 30%.

Problem 2: You buy a property for $200,000 and sell it for $250,000. What is the ROI? Solution: Net Profit = $250,000 − $200,000 = $50,000. ROI = ($50,000 ÷ $200,000) × 100 = 25%.

Problem 3: You invest $1,000 in a stock and sell it for $1,200. What is the ROI? Solution: Net Profit = $1,200 − $1,000 = $200. ROI = ($200 ÷ $1,000) × 100 = 20%.

Problem 4: A marketing campaign costs $50,000 and generates $75,000 in gross returns. What is the ROI? Solution: Net Profit = $75,000 − $50,000 = $25,000. ROI = ($25,000 ÷ $50,000) × 100 = 50%.

Problem 5: You invest $100,000 in an index fund and after 10 years it's worth $250,000. What is the total ROI and annualized ROI? Solution: Net Profit = $250,000 − $100,000 = $150,000. ROI = ($150,000 ÷ $100,000) × 100 = 150%. Annualized ROI = (1 + 1.50)^(1/10) − 1 = 9.60%.

Answers: 1) 30% — 2) 25% — 3) 20% — 4) 50% — 5) 150% total, 9.60% annualized

Common ROI Mistakes

Ignoring the time factor. Mistake: comparing ROI without considering time. Fix: always annualize ROI before comparing — use "Compare Investments" mode above.
Forgetting to include all costs. Mistake: not accounting for all expenses. Fix: include fees, taxes, and other costs in your cost basis — use the "Additional Costs" field in Calculate ROI mode.
Using ROI for short-term decisions without risk. Mistake: focusing only on ROI without risk. Fix: consider risk and time horizon alongside the percentage.
Comparing ROI across different time periods. Mistake: treating a 20% ROI in 1 year the same as 20% ROI in 5 years. Fix: annualize both before comparing.
Ignoring opportunity cost. Mistake: not considering other investment options. Fix: compare ROI to alternative investments or a benchmark rate — including fixed-income options via the Bond Yield Calculator.
Overlooking inflation. Mistake: using nominal ROI without adjusting for inflation. Fix: calculate real (inflation-adjusted) ROI separately.
Not considering risk. Mistake: assuming a higher ROI always means a better investment. Fix: remember that risk-adjusted return matters just as much as the raw number.
Manipulating the numbers. Mistake: using inconsistent definitions of gain and cost. Fix: use consistent, complete definitions every time.

What This Calculator Can and Cannot Do

This calculator CAN help with:

Calculating ROI percentage and net profit
Calculating annualized ROI for any holding period
Comparing two investment options side by side, even across different durations
Breaking out ROI vs. ROE to see the effect of leverage (debt)
Comparing an investment against a benchmark rate of return
Business, marketing, real estate, and stock investment decisions

This calculator CANNOT do:

Risk assessment
Inflation-adjusted (real) returns
Replace professional financial advice
Account for taxes
Consider the time value of money for irregular cash flows (use NPV or IRR)

Final Summary

An ROI calculator is essential for anyone investing money — whether in stocks, real estate, business, or marketing. Understanding how to calculate ROI, compare it fairly across time periods, and separate it from ROE helps you make better investment decisions.

Remember the key formula: ROI = (Gain − Cost) ÷ Cost × 100

Quick reference:

20% ROI on $10,000 → $2,000 profit
30% ROI on $50,000 → $15,000 profit
50% ROI on $100,000 → $50,000 profit

Decision rule: ROI > 0 = profitable. ROI < 0 = unprofitable. Higher ROI = better, but always consider time and risk.

Start calculating now — just enter your values above and get instant results, completely free.

Related concepts

Return on Investment (ROI)

A percentage measure of profitability: net profit divided by the total cost of an investment.

Return on Equity (ROE)

Profit measured against shareholders' equity only, excluding debt — usually higher than ROI when leverage is used.

Annualized ROI

ROI converted to a per-year rate so investments of different durations can be compared fairly.

WACC (Weighted Average Cost of Capital)

The average rate of return a company must pay its investors — the benchmark an investment's ROI should clear to create value.

Frequently Asked Questions

What is ROI?+

ROI (Return on Investment) measures the profitability of an investment. It compares the net gain to the cost of the investment.

What is the ROI formula?+

ROI = (Gain − Cost) ÷ Cost × 100.

How do I calculate ROI?+

Subtract the cost from the gain to get net profit, divide by the cost, and multiply by 100.

What does 20% ROI mean?+

A 20% ROI means you earned 20% profit relative to your investment. For every $100 invested, you earned $20 profit.

What is a good ROI?+

A good ROI depends on the investment type. Generally, anything above the inflation rate and risk-free rate is considered good.

What is the difference between ROI and ROE?+

ROI measures return on total investment, including any debt used. ROE measures return on equity only, excluding debt.

Why is ROE usually higher than ROI?+

Because ROE divides profit by equity alone (a smaller number when debt is used), while ROI divides by the full investment including debt.

What is an index fund calculator?+

An index fund calculator estimates returns from index fund investments based on historical average returns, such as the S P 500's roughly 10% long-run average.

What is an investment growth calculator?+

An investment growth calculator shows how investments grow over time with compounding — this calculator's benchmark comparison chart models exactly this.

Can ROI be negative?+

Yes, ROI is negative if the investment loses money (the gain is less than the cost).

Why is ROI important?+

ROI helps you evaluate investment profitability, compare options, and make informed financial decisions quickly.

What are the limitations of ROI?+

ROI on its own ignores time, risk, inflation, and opportunity cost. It should be annualized and used alongside other metrics like WACC or IRR.

How do I fairly compare two investments with different holding periods?+

Always compare annualized ROI, not raw total ROI. Use "Compare Investments" mode above to see both side by side automatically.

What is WACC and how does it relate to ROI?+

WACC (Weighted Average Cost of Capital) is what a company pays, on average, for its capital. If ROI is below WACC, the investment is destroying value even if it is technically profitable.

Is this ROI calculator free?+

Yes — completely free with no registration required.

ROI, annualized ROI & ROE formulas

ROI = (Gain − Cost) ÷ Cost × 100. Annualized ROI = (Gain ÷ Cost)^(1/Years) − 1. ROE = Net Profit ÷ Equity × 100.

ROI compares profit to total cost. Annualized ROI adjusts for holding period so investments of different lengths can be compared fairly. ROE isolates the return on equity alone, excluding debt.

How the calculation works

1Choose Calculate ROI, Compare Investments, or ROI vs ROE mode.

2Calculate ROI: enter your cost, final value, extra costs, and duration to see ROI, annualized ROI, and a benchmark comparison.

3Compare Investments: enter two scenarios — even with different holding periods — and see which wins on annualized ROI.

4ROI vs ROE: enter your total investment, the equity portion, and net profit to see how debt (leverage) changes your real return.

How to understand and use this calculator

Quick Answer

What is ROI? ROI (Return on Investment) is a measure of investment profitability. It compares the net gain from an investment to its cost.

The formula: ROI = (Gain − Cost) ÷ Cost × 100

Simple example: Investment = $10,000, Final Value = $13,000, Gain = $3,000.

ROI = ($13,000 − $10,000) ÷ $10,000 × 100 = 30%

Decision rule:

ROI > 0 = profitable investment
ROI < 0 = unprofitable investment
Higher ROI = better investment (all else being equal)

Use the ROI Calculator

To use the ROI calculator:

1. Choose Calculate ROI, Compare Investments, or ROI vs ROE mode.

2. Enter the invested amount (cost) and returned amount (gain) — or, for comparisons, two full scenarios.

3. Review the ROI percentage, profit, and step-by-step work.

Example input: Invested Amount = $10,000, Returned Amount = $13,000.

Output: ROI = 30.00% • Net Profit = $3,000 • Step-by-step work: ($13,000 − $10,000) ÷ $10,000 × 100 = 30%.

Another example (negative ROI): Invested Amount = $10,000, Returned Amount = $8,000.

Output: ROI = -20.00% • Net Loss = -$2,000 • Step-by-step work: ($8,000 − $10,000) ÷ $10,000 × 100 = -20%.

What is ROI?

ROI (Return on Investment) is a financial metric that measures the profitability of an investment. It compares the amount you gain from an investment to the amount you invested.

In simple terms: ROI tells you how much profit you made relative to what you put in.

Key points:

ROI is expressed as a percentage
ROI > 0 means the investment made money
ROI < 0 means the investment lost money
Higher ROI is better (all else being equal)

Why ROI is important: it measures investment efficiency, lets you compare different investments, is simple and easy to understand, and is used across industries.

Example: you invest $100,000 in a business and receive $120,000 back. ROI = ($120,000 − $100,000) ÷ $100,000 × 100 = 20%.

The ROI Formula

The ROI formula is simple and powerful:

ROI = (Gain − Cost) ÷ Cost × 100

Or more simply: ROI = (Net Profit ÷ Cost) × 100

Gain = amount received from the investment (final value)
Cost = amount invested (initial value)
Net Profit = Gain − Cost

Expanded example: Gain = $13,000, Cost = $10,000, Net Profit = $3,000, ROI = (Net Profit ÷ Cost) × 100 = 30%.

How to Calculate ROI — Step by Step

How to calculate return on investment is simple when you follow these steps:

Step 1: Identify the cost (initial investment) → Cost = $10,000.

Step 2: Identify the gain (final value) → Gain = $13,000.

Step 3: Calculate the net profit → Net Profit = Gain − Cost = $13,000 − $10,000 = $3,000.

Step 4: Divide net profit by cost → $3,000 ÷ $10,000 = 0.30.

Step 5: Multiply by 100 → 0.30 × 100 = 30%.

Answer: ROI = 30%.

Worked Examples

How to Use This as an Investment Growth Calculator

This calculator also works as an investment growth calculator. Scenario: $10,000 invested at 8% annual return over 5 years.

Year 1: $10,000 → $10,800 (+$800)
Year 2: $10,800 → $11,664 (+$864)
Year 3: $11,664 → $12,597 (+$933)
Year 4: $12,597 → $13,605 (+$1,008)
Year 5: $13,605 → $14,693 (+$1,088)

Total ROI = ($14,693 − $10,000) ÷ $10,000 × 100 = 46.93%. Annualized ROI = 8%.

How to Use This as an Index Fund Calculator

An index fund calculator shows returns from a diversified portfolio. S P 500 historical average returns (illustrative, ~10%/year):

10 years: ~10%/year → $10,000 grows to roughly $25,937
20 years: ~10%/year → $10,000 grows to roughly $67,275
30 years: ~10%/year → $10,000 grows to roughly $174,494

ROI vs ROE — What's the Difference?

Definition: ROI is return on total investment. ROE (Return on Equity) is return on shareholders' equity only.

What it measures: ROI measures profit relative to total cost. ROE measures profit relative to equity.

Includes debt? ROI includes total investment (yes). ROE only considers equity (no).

Used by: ROI is used by investors and businesses generally. ROE is used more by shareholders and analysts.

Example: a company invests $1,000,000 (including $600,000 equity and $400,000 debt) and earns a net profit of $200,000.

ROI = $200,000 ÷ $1,000,000 × 100 = 20%
ROE = $200,000 ÷ $600,000 × 100 = 33.33%

Key insight: ROE is usually higher than ROI because it only considers equity, not debt. Switch to "ROI vs ROE" mode above to model your own capital structure.

ROI Advantages and Disadvantages

Advantages of ROI:

Simple to calculate: easy formula with readily available data
Easy to interpret: clear percentage result
Comparable: lets you compare across investments
Versatile: used in many industries
Quick decisions: fast assessment of profitability

Disadvantages of ROI:

Ignores time: doesn't account for investment duration on its own
Ignores risk: two investments with the same ROI can carry very different risk
Can be manipulated: different approaches to measuring gain and cost
Short-term focus: may encourage short-term thinking
No context: doesn't show how the ROI was achieved

How to Make Better Investment Decisions with ROI

Basic decision rule: ROI ≥ 0 = profitable. ROI < 0 = unprofitable.

Advanced decision criteria:

ROI ≥ 0 — simple profit/loss decision
ROI ≥ industry average — compare to competitors
ROI ≥ WACC — compare to your cost of capital
ROI ≥ target return — compare to your own goals

Example: Investment ROI = 8%, WACC = 10%. Since ROI < WACC, the investment is NOT creating value, even though it is technically profitable.

Real-World ROI Examples

Real Estate: Purchase $250,000 → Sale $325,000 → Net Profit $75,000 → ROI 30%

Marketing Campaign: Budget $100,000 → Additional Revenue $180,000 → Net Profit $80,000 → ROI 80%

Stock Investment: Investment $5,000 → Final Value $6,500 → Net Profit $1,500 → ROI 30%

Index Fund: Investment $10,000 → 5 Years Later $16,105 → ROI 61.05% → Annualized ROI 10%

Practice Problems

Problem 1: You invest $50,000 in a business and receive $65,000 back. What is the ROI? Solution: Net Profit = $65,000 − $50,000 = $15,000. ROI = ($15,000 ÷ $50,000) × 100 = 30%.

Problem 2: You buy a property for $200,000 and sell it for $250,000. What is the ROI? Solution: Net Profit = $250,000 − $200,000 = $50,000. ROI = ($50,000 ÷ $200,000) × 100 = 25%.

Problem 3: You invest $1,000 in a stock and sell it for $1,200. What is the ROI? Solution: Net Profit = $1,200 − $1,000 = $200. ROI = ($200 ÷ $1,000) × 100 = 20%.

Answers: 1) 30% — 2) 25% — 3) 20% — 4) 50% — 5) 150% total, 9.60% annualized

Common ROI Mistakes

Ignoring the time factor. Mistake: comparing ROI without considering time. Fix: always annualize ROI before comparing — use "Compare Investments" mode above.
Forgetting to include all costs. Mistake: not accounting for all expenses. Fix: include fees, taxes, and other costs in your cost basis — use the "Additional Costs" field in Calculate ROI mode.
Using ROI for short-term decisions without risk. Mistake: focusing only on ROI without risk. Fix: consider risk and time horizon alongside the percentage.
Comparing ROI across different time periods. Mistake: treating a 20% ROI in 1 year the same as 20% ROI in 5 years. Fix: annualize both before comparing.
Ignoring opportunity cost. Mistake: not considering other investment options. Fix: compare ROI to alternative investments or a benchmark rate — including fixed-income options via the Bond Yield Calculator.
Overlooking inflation. Mistake: using nominal ROI without adjusting for inflation. Fix: calculate real (inflation-adjusted) ROI separately.
Not considering risk. Mistake: assuming a higher ROI always means a better investment. Fix: remember that risk-adjusted return matters just as much as the raw number.
Manipulating the numbers. Mistake: using inconsistent definitions of gain and cost. Fix: use consistent, complete definitions every time.

What This Calculator Can and Cannot Do

This calculator CAN help with:

Calculating ROI percentage and net profit
Calculating annualized ROI for any holding period
Comparing two investment options side by side, even across different durations
Breaking out ROI vs. ROE to see the effect of leverage (debt)
Comparing an investment against a benchmark rate of return
Business, marketing, real estate, and stock investment decisions

This calculator CANNOT do:

Risk assessment
Inflation-adjusted (real) returns
Replace professional financial advice
Account for taxes
Consider the time value of money for irregular cash flows (use NPV or IRR)

Final Summary

Remember the key formula: ROI = (Gain − Cost) ÷ Cost × 100

Quick reference:

20% ROI on $10,000 → $2,000 profit
30% ROI on $50,000 → $15,000 profit
50% ROI on $100,000 → $50,000 profit

Decision rule: ROI > 0 = profitable. ROI < 0 = unprofitable. Higher ROI = better, but always consider time and risk.

Start calculating now — just enter your values above and get instant results, completely free.

Related concepts

Return on Investment (ROI)

A percentage measure of profitability: net profit divided by the total cost of an investment.

Return on Equity (ROE)

Profit measured against shareholders' equity only, excluding debt — usually higher than ROI when leverage is used.

Annualized ROI

ROI converted to a per-year rate so investments of different durations can be compared fairly.

WACC (Weighted Average Cost of Capital)

The average rate of return a company must pay its investors — the benchmark an investment's ROI should clear to create value.

Frequently Asked Questions

What is ROI?+

ROI (Return on Investment) measures the profitability of an investment. It compares the net gain to the cost of the investment.

What is the ROI formula?+

ROI = (Gain − Cost) ÷ Cost × 100.

How do I calculate ROI?+

Subtract the cost from the gain to get net profit, divide by the cost, and multiply by 100.

What does 20% ROI mean?+

A 20% ROI means you earned 20% profit relative to your investment. For every $100 invested, you earned $20 profit.

What is a good ROI?+

A good ROI depends on the investment type. Generally, anything above the inflation rate and risk-free rate is considered good.

What is the difference between ROI and ROE?+

ROI measures return on total investment, including any debt used. ROE measures return on equity only, excluding debt.

Why is ROE usually higher than ROI?+

Because ROE divides profit by equity alone (a smaller number when debt is used), while ROI divides by the full investment including debt.

What is an index fund calculator?+

An index fund calculator estimates returns from index fund investments based on historical average returns, such as the S P 500's roughly 10% long-run average.

What is an investment growth calculator?+

An investment growth calculator shows how investments grow over time with compounding — this calculator's benchmark comparison chart models exactly this.

Can ROI be negative?+

Yes, ROI is negative if the investment loses money (the gain is less than the cost).

Why is ROI important?+

ROI helps you evaluate investment profitability, compare options, and make informed financial decisions quickly.

What are the limitations of ROI?+

ROI on its own ignores time, risk, inflation, and opportunity cost. It should be annualized and used alongside other metrics like WACC or IRR.

How do I fairly compare two investments with different holding periods?+

Always compare annualized ROI, not raw total ROI. Use "Compare Investments" mode above to see both side by side automatically.

What is WACC and how does it relate to ROI?+

WACC (Weighted Average Cost of Capital) is what a company pays, on average, for its capital. If ROI is below WACC, the investment is destroying value even if it is technically profitable.

Is this ROI calculator free?+

Yes — completely free with no registration required.

ROI Calculator

Inputs

Results

Compare against a benchmark (10%/yr)

ROI, annualized ROI & ROE formulas

How the calculation works

Learn more about this calculation

ROI Calculation: Formula, Annualized Return, and Examples

Business Valuation Methods: A Practical Owner Guide

CAGR Calculator

Compound Interest Calculator

Investment Calculator

Stock Profit Calculator

Profit Margin Calculator

Bond Yield Calculator

ROI Calculator

Inputs

Results

Compare against a benchmark (10%/yr)

Key output metrics

Cost vs final value

Investment cost makeup

This investment vs. benchmark profit

How to understand and use this calculator

Quick Answer

Use the ROI Calculator

What is ROI?

The ROI Formula

How to Calculate ROI — Step by Step

Worked Examples

How to Use This as an Investment Growth Calculator

How to Use This as an Index Fund Calculator

ROI vs ROE — What's the Difference?

ROI Advantages and Disadvantages

How to Make Better Investment Decisions with ROI

Real-World ROI Examples

Practice Problems

Common ROI Mistakes

What This Calculator Can and Cannot Do

Final Summary

Related concepts

Frequently Asked Questions

ROI, annualized ROI & ROE formulas

How the calculation works

Learn more about this calculation

ROI Calculation: Formula, Annualized Return, and Examples

Business Valuation Methods: A Practical Owner Guide

CAGR Calculator

Compound Interest Calculator

Investment Calculator

Stock Profit Calculator

Profit Margin Calculator

Bond Yield Calculator

Key output metrics

Cost vs final value

Investment cost makeup

This investment vs. benchmark profit

How to understand and use this calculator

Quick Answer

Use the ROI Calculator

What is ROI?

The ROI Formula

How to Calculate ROI — Step by Step

Worked Examples

How to Use This as an Investment Growth Calculator

How to Use This as an Index Fund Calculator

ROI vs ROE — What's the Difference?

ROI Advantages and Disadvantages

How to Make Better Investment Decisions with ROI

Real-World ROI Examples

Practice Problems

Common ROI Mistakes

What This Calculator Can and Cannot Do

Final Summary

Related concepts

Frequently Asked Questions