ROI Calculator

Two amounts in, four numbers out, and only one of them compares

ROI is the gain or loss on an investment expressed as a percentage of the amount invested: (Final Value − Initial Investment) ÷ Initial Investment × 100. It is a fast way to gauge how efficiently money was put to work, and from those same two amounts this calculator reports four things — the gain or loss in currency, the ROI percentage, the investment multiple, and, once you give it a holding period, the annualized ROI. Only the last of the four is safe to quote next to somebody else’s number.

In Indian banking, “ROI” is also shorthand for a loan’s rate of interest. That is a different number: to see what an interest rate costs in monthly EMIs, use the Loan Calculator.

Take $10,000 that is worth $14,500 three years later. The gain is $4,500, the ROI is (14,500 − 10,000) ÷ 10,000 = 45%, and the investment multiple is 1.45×. Because it took three years, the annualized ROI is (14,500 ÷ 10,000)^(1/3) − 1 ≈ 13.19% a year. Notice that the multiple and the percentage are one fact said twice: 1.45× is a 45% ROI, and any multiple below 1.00× is a loss no matter how the percentage is phrased. The four outputs are really three descriptions of the same gain, plus one — the annualized rate — that carries the holding period inside it.

That is why the headline ROI is a total, lifetime figure and nothing more. It says nothing about when the money came back or how long it was tied up, which is exactly what annualizing fixes: the annualized ROI is the constant yearly return that would compound to the same total result, (Final ÷ Initial)^(1 ÷ Years) − 1. For a single amount invested with one start value and one end value, that is the same arithmetic as CAGR, the compound annual growth rate. The words differ more than the math does — “ROI” usually names the total, un-annualized return, while CAGR is always annualized — so this page reports both and labels which is which.

Two of the five modes change which figure you should read first. In Net ROI mode, read the gross and net numbers as a pair: the gap between them is fees, taxes, and any income such as dividends or rent, and net is almost always the more honest basis for a decision you are about to act on. In Compare mode, watch for the case where the winner by percentage is not the winner by absolute profit. The tool flags that disagreement rather than declaring a single winner, because a higher ROI on a small amount can still put fewer dollars in your pocket than a lower ROI on a larger one — and because the percentage, on its own, cannot tell you which of those two things you were trying to maximize.

The same 60% return over one year and over twenty

Every row below is the identical result — $10,000 becoming $16,000 — held for a different length of time. The total ROI and the multiple never move. The only figure that changes is the one that decides whether the investment was good.

Held one year, 60% is an exceptional result. Held twenty, the same 60% is 2.38% a year — below most measured inflation, so the money bought less at the end than at the start. A total-return figure quoted without its holding period is not yet an answer.

When the bigger total return is the worse investment

Two real results, the same $10,000 committed. Compare mode scores both and flags the disagreement rather than declaring a single winner.

A wins on both headline measures — more than twice the total return and $3,200 more profit — yet B put money to work faster. For A to match B’s per-year rate, its five years would have had to end at $18,536: an 85.4% total return, not 60%. B only stays ahead if the capital it freed up keeps earning near that rate for the remaining three years — a second assumption, not a result.

Where a 20% gross ROI becomes a 30.8% net one

Costs and income both sit between the price change and the return you keep, and they can pull in opposite directions. A $10,000 holding sold for $12,000 after three years, with rent collected along the way, line by line:

Gross ROI 20.00% (6.27% a year); net ROI 30.80% (9.36% a year). Income can outweigh costs, so net is not automatically the smaller number — enter both rather than assume. The break-even sale price is $8,920: below that, the rent stops covering the loss and the costs.

What goes in Initial, Final and Income for a rental, a solar array or a degree

The boxes are labeled Initial, Final, Costs and Income rather than “purchase price” or “sale price” because the arithmetic genuinely does not care what the asset was. What changes from one asset class to the next is which real-world amount belongs in which box, and that mapping — not the formula — is where most ROI figures go wrong. Four common cases, and the trap in each.

A rental property. Enter the purchase price as Initial, the rent collected under Income, the current value or sale price as Final, and the holding period in years. Net ROI then reflects the rental income and the price appreciation together, after whatever costs you enter — which is exactly the receipt above, where three years of rent came within $200 of matching the price change itself. The trap is entering a mortgaged purchase at the full property price: if you only put down a deposit, the amount you actually committed is the deposit plus the payments made, and using the sticker price instead understates the ROI on your own money.

Solar panels, or anything bought to avoid a bill. Enter the installation cost as Initial, the total energy-bill savings over the period as Income, and 0 as Final if you are not reselling anything at the end. Net ROI then shows your return and the annualized figure approximates the payback rate. This is the one case where a Final of zero is correct rather than catastrophic: the whole return arrives as avoided spending, and the asset is allowed to be worth nothing at the end of the horizon you chose.

Shares, funds or crypto. For a straightforward buy-and-hold return — what you paid against what it is worth now — Simple ROI works for any asset class. It does not model staking yield, DeFi APR or dividend reinvestment as mechanisms; those are ongoing-income arrangements rather than a single start value and a single end value. Distributions you reinvested are already inside the value of the larger holding you now own, so they belong in Final; distributions you took as cash belong in Income. Counting the same payout in both boxes is the most common way a return on this page comes out flatteringly high.

A degree, a course or a certification. Enter the total cost — tuition, fees and the income given up while studying — as Initial, the added annual earnings versus not having the qualification as Income, and your time horizon in years. Treat the answer as an approximation: it cannot account for career-path uncertainty, and it captures opportunity cost only to the extent that you typed it into the Initial box yourself. The same shape works for a fixed deposit whose maturity value you already know — deposit as Initial, maturity amount as Final — but to project that maturity value from an interest rate in the first place, use the compound interest calculator, since fixed deposits typically compound quarterly rather than once at the end.

Money that moves more than twice needs IRR, not ROI

Every figure on this page rests on one shape: a single amount in at the start, a single amount out at the end, and anything else you received folded in as a lump under Income. Use ROI and annualized ROI when your investment really has that shape. Use IRR — the internal rate of return — when money goes in and out at several different dates: staged investments, capital calls, interim distributions, a rental you refinanced halfway through. IRR accounts for the exact timing of every cash flow, which ROI cannot, because ROI never learns the dates of anything except the start and the end.

The distortion runs in both directions and it is not small. Annualizing takes the ratio of two endpoints and spreads it evenly across the period, so a contribution made in the final month is treated as though it had been invested from day one, flattering the result; a withdrawal taken early is treated as though the money had stayed in, punishing it. Net ROI mode softens this for income but does not solve it: the $1,800 of rent in the receipt above counts the same whether it arrived in the first year or the third, even though rent received early could have been earning something for two more years. When the timing of the middle cash flows is the thing you are actually deciding about, ROI is answering a different question.

For the same reason this is not ROIC, return on invested capital, despite the near-identical name. ROIC is a corporate-finance ratio — operating profit after tax divided by the capital employed to produce it — read off a company’s financial statements to judge how well the business converts capital into profit. This page computes a personal or project-level return from a start value, an end value and the cash flows you type in. Different inputs, different purpose, and no sensible way to compare a figure from one against a figure from the other.

Everything the page holds fixed while you move one number:

• ROI uses the figures you enter — the calculator does not fetch live prices, fees, or tax rates.
• Annualized ROI assumes a single amount invested at the start and a single value at the end; it does not model staged contributions or interim withdrawals (use IRR for those).
• Decimal years in date mode are computed as the exact day count divided by 365.25.
• The value-over-time table is illustrative: it repeats the calculated annualized ROI each year and is not a forecast.

The date fields are the one place where precision is worth the extra typing. Entering a start and an end date gives an exact day count divided by 365.25, so a holding that ran for two years and seven months is annualized over the days it actually ran rather than over a rounded “about three years”. Over short holdings that rounding is the difference between a plausible annualized figure and a meaningless one, because the exponent 1 ÷ Years amplifies whatever you got wrong about the period.

ROI tells you how much, never how risky

Two investments that both turn $10,000 into $16,000 over five years score identically here — the same 60%, the same 1.60×, the same annualized rate — whether one was a deposit that was never going to do anything else and the other was a concentrated position that could equally have gone to zero. ROI does not measure risk, volatility, liquidity, or the effort the investment demanded from you. It is a scorecard for one outcome that already happened, and the securities-regulator material cited below states the corollary plainly: returns are not guaranteed and prices can fall, so a return you have measured is not a return you can expect again.

Inflation is the second thing the percentage hides. Every figure here is nominal — measured in the currency of the day, with no adjustment for what that currency buys. The twenty-year row in the table above is the clearest case: the same 60% total return, worth 2.38% a year, sits below most measured inflation, so the money came back larger and bought less. To check a nominal ROI against reality, hold it next to the published consumer-price series linked in the sources below; if the annualized figure is under the inflation rate for the same years, the investment lost purchasing power while showing a profit.

ROI is also asymmetric around zero, which trips up anyone averaging returns in their head. A $10,000 holding that falls to $5,000 has an ROI of −50%; climbing back from $5,000 to $10,000 is a +100% ROI. The two figures are the same journey in opposite directions, yet one is twice the size of the other, so a −50% year and a +50% year do not cancel — they leave you at $7,500 on a $10,000 start, a −25% ROI overall. Sequences of returns cannot be added, only multiplied, and the deeper a loss goes the more disproportionate the gain that undoes it.

The limitations worth saying out loud before you quote a number from this page:

• ROI does not measure risk, volatility, liquidity, or the effort involved.
• Taxes, fees, and income vary by country, account type, and situation — enter your own figures in Net ROI mode.
• For irregular or multi-date cash flows, ROI and annualized ROI can mislead; IRR is the appropriate tool.
• Returns are not guaranteed; ROI describes a result on the figures you enter, not a forecast.

ROI is not a forecast. It describes a result on the figures you enter. For projecting future growth from regular contributions, use the investment calculator; for monthly investing, the regular investment calculator.

Sources and methodology

ROI here is arithmetic on the figures you enter - this page fetches no live prices, fees or tax rates. The sources below cover the annualized-return model, the tax step between a gross return and what an investor keeps, the inflation series that decides whether a positive nominal return is a real gain, and why a return figure has to be read next to its risk. Links open in a new tab.

• Compound Interest Calculator - the compounding model published by the US securities regulator, the same basis as the annualized (CAGR) return this page reports alongside simple ROIU.S. Securities and Exchange Commission (Investor.gov) · verified 2026-09-01
• Stocks - the regulator statement that returns are not guaranteed and prices can fall, which is why a past or hypothetical ROI figure does not predict a future oneU.S. Securities and Exchange Commission (Investor.gov) · verified 2026-09-01
• What is risk - why a return figure has to be read next to the risk taken to earn it, the limitation stated under this calculator resultU.S. Securities and Exchange Commission (Investor.gov) · verified 2026-09-01
• Topic 409, Capital gains and losses - the tax treatment that sits between the gross ROI shown here and the amount an investor actually keepsInternal Revenue Service (IRS) · verified 2026-09-01
• Consumer Price Index - the measured inflation series to check a nominal ROI against, since a positive nominal return can still be a real-terms lossU.S. Bureau of Labor Statistics (BLS) · verified 2026-09-01

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For how timing changes what the same total money grows to — the same principle behind why annualized ROI matters — see SIP vs Lump Sum Investment Calculation: What the Numbers Actually Show.