# How to Calculate ROI on an Investment: A Practical Guide for NRIs and Indian Investors Author: Savitri Bobde Author URL: https://getbelong.com/blog/author/savitri-bobde/ Published: 2026-10-17 Category: Financial Topics Category URL: https://getbelong.com/blog/category/topics/ Meta Title: How to Calculate ROI on an Investment: NRI and RI Guide Meta Description: Learn how to calculate ROI on an investment the right way. Simple, annualised, XIRR, post-tax and currency-adjusted ROI for NRIs and Indian investors. URL: https://getbelong.com/blog/roi-on-investment/ An NRI in Dubai tells us their Indian fund has "doubled". It sounds like a clear win. Then we ask one question: doubled in rupees or in dirhams? Very often, they are not sure. Learning how to calculate ROI on an investment sounds basic. Yet it is where many good decisions quietly go wrong. At [Belong](https://getbelong.com/), we see this pattern often in our community and advisory chats. This guide is for two readers. If you're an NRI, it shows how to measure returns on Indian investments in the currency you actually live in. If you're a resident Indian, it shows how to judge global and USD investments from India without fooling yourself. ## What ROI Actually Means ROI stands for return on investment. It tells you how much you earned compared to what you put in. The basic formula is simple: **ROI = (Final Value - Amount Invested) / Amount Invested x 100** Final value includes the current value plus any income received, like dividends or interest. Amount invested includes every rupee or dollar you put in, including charges paid upfront. Here is a quick example with illustrative figures. You invest 5 lakh rupees. Three years later, it is worth 6.5 lakh rupees. Your gain is 1.5 lakh. Divide by 5 lakh and you get 30 percent ROI. That number is correct. It is also incomplete. ## Why Simple ROI Misleads Most Investors Simple ROI ignores time. A 30 percent gain in one year is excellent. The same gain over ten years is weak. It also ignores tax, costs, inflation and currency. Each of these can change the real outcome quite sharply. This is the core idea behind the [time value of money](https://getbelong.com/blog/time-value-of-money-meaning/). Money today is worth more than the same money later. **Tip:** Never compare two investments using simple ROI unless both were held for the same period. ## Five Ways to Calculate ROI (And When to Use Each) Different investments need different ROI methods. Using the wrong one is like measuring distance in litres. Method Best used for Main limitation Simple ROI One-time investments held briefly Ignores time completely Annualised ROI (CAGR) Lump sums held for many years Assumes one entry and one exit XIRR SIPs and irregular deposits or withdrawals Needs exact dates for each cash flow Post-tax ROI Comparing FDs, funds and stocks fairly Depends on your residential status Currency-adjusted ROI NRIs and global investing from India Needs exchange rates at entry and exit Let us walk through each one. ### 1\. Annualised ROI or CAGR CAGR means compound annual growth rate. It shows the steady yearly return that would turn your starting amount into your final amount. **CAGR = (Final Value / Amount Invested) ^ (1 / Number of Years) - 1** Using our earlier example, 6.5 lakh divided by 5 lakh is 1.3. Raise that to the power of one-third. You get roughly 1.091. So the annualised return is about 9.1 percent a year. That is far more useful than "30 percent". CAGR works because of [compounding](https://getbelong.com/blog/compounding-meaning/). Gains earn further gains each year. ### 2\. XIRR for SIPs and Irregular Investments If you invest monthly through a SIP, CAGR breaks down. Each instalment has a different holding period. XIRR solves this. It calculates one annualised return across many dated cash flows. [ICICI Bank explains XIRR](https://www.icici.bank.in/blogs/mutual-fund/xirr-in-mutual-funds) as a measure that accounts for the timing of each investment. Here is the detailed step, in Excel or Google Sheets: 1. List every investment date in column A. 2. Enter each investment as a negative number in column B. 3. Add today's date and current value as a positive number at the bottom. 4. Type =XIRR(B2:B20, A2:A20) and press enter. That result is your true annualised SIP return. Our guide on [SIP vs lump sum investing](https://getbelong.com/blog/mutual-funds/sip-vs-lump-sum-investment/) shows why this matters when comparing the two. ### 3\. Post-Tax ROI Two investments can show the same gross return. After tax, one can fall well behind. For NRIs, capital gains on Indian investments are taxable in India. The [Income Tax Department's non-resident help page](https://www.incometax.gov.in/iec/foportal/help/all-topics/e-filing-services/non-resident) covers how NRIs file and report such income. Tax treatment changes with the asset type and holding period. Our explainer on [tax on capital gains for NRIs](https://getbelong.com/blog/tax-on-capital-gains-for-nris/) breaks this down. The formula changes slightly: **Post-Tax ROI = (Final Value - Amount Invested - Tax Paid - Costs) / Amount Invested x 100** We have written about why [post-tax returns matter more than headline returns](https://getbelong.com/blog/post-tax-returns-matter-more-than-headline-returns/). It is one of the most common blind spots we see. ### 4\. Real ROI After Inflation A 7 percent return feels good. If prices rose 6 percent that year, your real gain is close to 1 percent. This is your [real return](https://getbelong.com/blog/real-return-meaning/). It tells you whether your purchasing power actually grew. A simple approximation is: Real ROI is roughly Nominal ROI minus [inflation](https://getbelong.com/blog/inflation-meaning/). For precise work, use the full Fisher formula. ### 5\. Currency-Adjusted ROI This is the method most blogs skip. For NRIs and global investors, it often matters most. Your ROI depends on which currency you measure it in. Both answers can be correct. Only one matters for your life. ## The NRI Scenario: Your Rupee ROI Is Not Your Dirham ROI If you're working in Dubai and earning in dirhams, your goals are often priced in dirhams or dollars. Your Indian fund statement shows rupees. Consider an illustrative case. The exchange rates here are hypothetical. - You convert 20,000 dollars at a rate of 80 rupees per dollar. - You invest the resulting 16 lakh rupees in an Indian equity fund. - Four years later, the fund is worth 20 lakh rupees. - Your rupee ROI is 25 percent. Now assume the rupee weakened to 88 per dollar. Converting 20 lakh back gives you about 22,727 dollars. Your dollar ROI is roughly 13.6 percent. Nearly half the gain disappeared in conversion. The official rupee benchmark used for such conversions is published by FBIL. The [RBI's press release on FBIL reference rates](https://www.rbi.org.in/Scripts/BS_PressReleaseDisplay.aspx?prid=44393) explains this handover. We cover this risk in depth in our guide on [currency risk for NRIs](https://getbelong.com/blog/currency-risk-for-nris/). For USD-specific comparisons, read [how to compare USD investment returns correctly](https://getbelong.com/blog/compare-usd-investment-returns-correctly/). **Tip:** If you plan to spend the money abroad, measure ROI in that currency. If you plan to return to India, rupee ROI may be the right lens. This is why many NRIs hold part of their savings in dollars. Belong's [USD fixed deposits](https://getbelong.com/products/usd-fixed-deposits/) let you earn returns in dollars directly through GIFT City. You can compare them on our [NRI FD rates tool](https://getbelong.com/tools/nri-fd-rates/). For a side-by-side view, see [GIFT City FD vs FCNR vs NRO and NRE FDs](https://getbelong.com/blog/gift-city-fd-vs-fcnr-vs-nro-and-nre-fds/). ## The Resident Indian Scenario: Currency Can Work in Your Favour If your portfolio is entirely in India, the same maths runs in reverse. Take another illustrative case with hypothetical rates. You invest 8 lakh rupees in a USD global fund at 80 per dollar. That buys 10,000 dollars of exposure. The fund grows 15 percent in dollar terms, to 11,500 dollars. If the rupee weakens to 88, your holding is worth about 10.12 lakh rupees. Your rupee ROI becomes roughly 26.5 percent. Currency movement added to your fund's own return. This is why global investing from India is more than a return play. It is a hedge against [INR depreciation](https://getbelong.com/blog/global-investment/inr-depreciation/). Resident Indians can invest abroad under the RBI's Liberalised Remittance Scheme. The [RBI's LRS FAQs](https://rbi.org.in/Scripts/FAQView.aspx?Id=115) set out what is permitted. Our breakdown of the [LRS route](https://getbelong.com/blog/global-investment/lrs-route/) explains the practical steps. GIFT City offers a simpler path for many Indian investors. You can browse USD-denominated options on our [GIFT City mutual funds tool](https://getbelong.com/tools/gift-city-mutual-funds/). If you prefer direct US exposure, start with our guide to [investing in the USA from India](https://getbelong.com/blog/invest-in-usa-from-india/). Currency can also move against you. Treat it as a diversifier, not a guaranteed bonus. ## Hidden Costs That Shrink Your ROI Most investors calculate ROI on the statement value. That number often hides several leaks. - **Expense ratio:** The yearly fund fee, deducted from NAV. Our [expense ratio guide](https://getbelong.com/blog/mutual-funds/expense-ratio/) explains how it compounds. - **Exit loads:** Charges for redeeming before a set period. - **Forex spreads:** The gap between the market rate and the rate your bank gives you. - **Brokerage and platform fees:** Small per trade, large over years. - **Tax deducted at source:** Money held back until you file and claim it. We list more of these in [hidden costs in NRI investments](https://getbelong.com/blog/hidden-costs-nris-investment/). Add them all before you trust any ROI figure. ## ROI on Other Assets: Property, IPOs, Derivatives and Credit ROI logic applies beyond funds. The inputs simply change. **Property:** Rental ROI uses net yearly rent divided by total purchase cost. Include stamp duty, maintenance and vacancy. Our article on [Dubai rental yield](https://getbelong.com/blog/dubai-rental-yield-explained/) shows how gross and net yield differ. If a loan is involved, interest cost reduces ROI. Our [NRI home loans guide](https://getbelong.com/blog/nri-home-loans/) explains how borrowing changes the picture. **Credit health:** A better [CIBIL score](https://getbelong.com/blog/cibil-score/) often means lower borrowing costs. Lower interest directly lifts ROI on any leveraged purchase. **Stocks and IPOs:** A listing-day gain can look huge on simple ROI. Annualised, a short holding period makes it look extreme and unrepeatable. If you are exploring this space, read our explainer on [GIFT City IPOs](https://getbelong.com/blog/ipo/gift-city-ipo/) or see [Belong IPO access](https://getbelong.com/products/ipo/). Our list of [best stocks](https://getbelong.com/blog/best-stocks/) is a research starting point, not a buy list. **Futures and options:** ROI on margin can look enormous. It ignores the full exposure you carry. Before trading [futures and options](https://getbelong.com/products/futures-and-options/), understand [leverage](https://getbelong.com/blog/leverage-meaning/) properly. For index derivatives, our guide to [GIFT Nifty futures](https://getbelong.com/blog/gift-nifty-futures/) is a sensible first read. **Credit card rewards:** Even reward points have an ROI. Compare annual fees against realistic reward value, as covered in our guide to the [best credit cards in India](https://getbelong.com/blog/best-credit-cards-in-india/). ## A Common Mistake We See in Advisory Conversations Here is a pattern we see often. An investor compares a fund's three-year return with an FD's one-year rate. They pick the fund, then feel cheated when the next year is flat. The comparison was never fair. One was a single lucky window. The other was a contracted rate. SEBI's [Beginner's Guide to the Capital Markets](https://investor.sebi.gov.in/pdf/reference-material/beginners.pdf) reminds investors that returns and risk go together. Past returns do not guarantee future ones. A better habit is to check returns across many periods. Our piece on [rolling returns vs point-to-point returns](https://getbelong.com/blog/mutual-funds/rolling-returns-vs-point-to-point-returns/) shows how. If you're unsure about your own numbers, our [tax filing service](https://getbelong.com/services/tax-filing/) can help you get the post-tax picture right. ## Why ROI Is Also a Behavioural Number We have noticed something over years of advising. People rarely miscalculate ROI out of laziness. They miscalculate it because they want a certain answer. A rising number feels like proof of a good decision. A falling one feels like failure. Neither feeling tells you much about the investment itself. Good ROI tracking is less about formulas and more about honesty. Measure the same way every time, in the currency that matches your goal. There is also an [opportunity cost](https://getbelong.com/blog/opportunity-cost-meaning/) to every choice. A 6 percent ROI is good only if your next best option offered less. ## Return to India: How Your ROI Lens Shifts If you plan to move back, your measuring currency shifts too. Expenses will be in rupees, so rupee ROI becomes more relevant. Your tax treatment may also change. Many returning NRIs qualify for [RNOR status](https://getbelong.com/blog/rnor-status/) for a period, which affects how foreign income is treated. Confirm your status with a tax professional before redeeming large holdings. Timing matters here. Selling just before or just after your status changes can alter post-tax ROI noticeably. ## Your Decision Clarity Checklist Use this to choose the right ROI method quickly. - If you made one investment and held it under a year, use simple ROI. - If you held a lump sum for several years, use CAGR. - If you invest through SIPs or top-ups, use XIRR. - If you are comparing an FD with a fund, use post-tax ROI for both. - If your goal is in dollars or dirhams, measure ROI in that currency. - If your timeline is short, avoid judging equity funds on recent ROI alone. **What happens if you ignore this?** You may exit a good investment too early, or stay in a weak one too long. Both mistakes cost far more than any fee. ## What NRIs and Resident Indians Should Do Next **If you're an NRI:** Calculate ROI on your Indian holdings in your home-country currency. Factor in tax at source and repatriation costs. Compare rupee investments against USD options before adding more. **If you're a resident Indian:** Check how much of your portfolio sits only in India. Calculate the currency-adjusted ROI of a global allocation. Consider GIFT City funds as a simpler route to USD exposure. ## Belong Tools That Make ROI Comparison Easier Calculating ROI is easier when the inputs are in one place. Our tools work as comparison shortcuts, not recommendations. - Compare deposit rates on the [NRI FD rates tool](https://getbelong.com/tools/nri-fd-rates/). - Browse the [GIFT City mutual funds tool](https://getbelong.com/tools/gift-city-mutual-funds/) and the [GIFT City AIF tool](https://getbelong.com/tools/gift-city-alternative-investment-funds/). - Review global fund pages like the [DSP Global Equity Fund](https://getbelong.com/tools/gift-city-mutual-funds/dsp-global-equity-fund/) and [Edelweiss Greater China Equity Fund](https://getbelong.com/tools/gift-city-mutual-funds/edelweiss-greater-china-equity-fund/). - Review India-focused fund pages like the [Tata India Dynamic Equity Fund](https://getbelong.com/tools/gift-city-mutual-funds/tata-india-dynamic-equity-fund/) and [Sundaram India Mid Cap Fund](https://getbelong.com/tools/gift-city-mutual-funds/sundaram-india-mid-cap-fund-gift/). - Explore [Belong mutual funds](https://getbelong.com/products/mutual-funds/) for USD-denominated options. - Track market mood on the [GIFT Nifty live tracker](https://getbelong.com/tools/gift-nifty/) and our [weekly GIFT Nifty outlook](https://getbelong.com/blog/gift-nifty-live-weekly/). - Study past moves with [GIFT Nifty historical data](https://getbelong.com/blog/gift-nifty-historical-data/) and our [chart guide](https://getbelong.com/blog/gift-nifty-chart-explained/). For fund-level analysis, our guide on [how to evaluate GIFT City fund performance correctly](https://getbelong.com/blog/how-to-evaluate-performance-of-gift-city-funds-correctly/) goes a step deeper. You can verify our regulatory credentials on the [Belong licences page](https://getbelong.com/licenses/). ## Frequently Asked Questions ### What is a good ROI on an investment? There is no single good number. A good ROI beats inflation, beats your next best option and matches your risk. Always compare on a post-tax, annualised basis. ### What is the difference between ROI and CAGR? ROI shows total gain over the whole period. CAGR converts that gain into a yearly rate. CAGR is better for comparing investments held for different lengths of time. ### How do I calculate ROI on a SIP? Use XIRR, since each SIP instalment is invested on a different date. Enter all dated cash flows in a spreadsheet and apply the XIRR function. ### Should NRIs calculate ROI in rupees or in foreign currency? Use the currency in which you will spend the money. If your goals are abroad, measure in dollars or dirhams. If you plan to return to India, rupee ROI may matter more. ### Does tax change how I should calculate ROI? Yes. Two investments with equal gross ROI can deliver very different post-tax ROI. Tax depends on the asset, holding period and your residential status. ## Sources - [ICICI Bank: XIRR in Mutual Funds](https://www.icici.bank.in/blogs/mutual-fund/xirr-in-mutual-funds) - [Income Tax Department: Non Resident e-Filing Help](https://www.incometax.gov.in/iec/foportal/help/all-topics/e-filing-services/non-resident) - [RBI: FBIL Taking Over Computation of Reference Rate](https://www.rbi.org.in/Scripts/BS_PressReleaseDisplay.aspx?prid=44393) - [RBI: Liberalised Remittance Scheme FAQs](https://rbi.org.in/Scripts/FAQView.aspx?Id=115) - [SEBI: Beginner's Guide to the Capital Markets](https://investor.sebi.gov.in/pdf/reference-material/beginners.pdf) ## Disclaimer This article is for educational purposes only and is not investment, tax or legal advice. All figures used in examples are hypothetical and for illustration. Investments are subject to market and currency risk. Please consult a qualified advisor before making investment decisions. --- This blog is powered by Superblog. 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