What Is ROI (Return on Investment)? How to Calculate It and Make Better Financial Decisions

ROI — Return on Investment — is the single most widely used metric in both business and investing. It answers one fundamental question: for every rupee I put in, how much did I get back? Simple as it sounds, mastering ROI analysis separates disciplined decision-makers from those who invest or spend money impulsively.

The ROI Formula

ROI (%) = [(Net Profit / Cost of Investment) × 100]
Or equivalently: ROI = [(Current Value − Cost) / Cost] × 100

Example: You buy shares worth ₹50,000 and sell them for ₹68,000 two years later.
ROI = [(68,000 − 50,000) / 50,000] × 100 = 36% (over 2 years)
Annualised (CAGR) = (68,000/50,000)^(1/2) − 1 = 16.6% per year

Calculate any investment’s ROI instantly with our ROI Calculator.

ROI in Business Contexts

In business, ROI measures the profitability of a specific expenditure — marketing campaigns, equipment purchases, hiring, or R&D:

Marketing ROI: ₹5 lakh spent on a campaign that generates ₹20 lakh in revenue → ROI = [(20L − 5L) / 5L] × 100 = 300%
Equipment ROI: ₹15 lakh machine that saves ₹4 lakh/year in labour costs → Payback in 3.75 years; 5-year ROI = 133%
Hiring ROI: Salesperson hired at ₹8 lakh/year who generates ₹40 lakh in new business → ROI = 400%

What Is a “Good” ROI?

There is no universal good ROI — it depends entirely on the context, industry, and alternative uses of capital:

Investment Type	Typical Expected ROI
Savings Account	2.7–7% p.a.
Fixed Deposit	6.5–8.5% p.a.
Indian Large-Cap Equity	10–13% p.a. (long-term)
Venture Capital	25–35% p.a. (target)
Real Estate (residential)	6–10% p.a. all-in
Digital Marketing (avg.)	120–200% (campaign-level)

The key benchmark is your cost of capital — the return you could have earned in the next-best alternative. An ROI below that threshold means you have economically destroyed value even if the absolute return is positive.

ROI Limitations: What It Doesn’t Capture

Time dimension: A 50% ROI over 10 years (CAGR: 4.1%) is worse than a 30% ROI over 2 years (CAGR: 14%). Always annualise ROI for fair comparison.
Risk: Two investments with identical ROI are not equal if one is risk-free and the other has 50% chance of total loss.
Non-financial returns: Employee satisfaction, brand value, and customer loyalty are real returns that ROI cannot quantify.

ROI vs. Other Return Metrics

CAGR — best for multi-year investments; accounts for compounding
XIRR — best for irregular cash flow investments (SIPs, business)
IRR — best for capital budgeting with multiple cash inflows and outflows
NPV — best for comparing projects with different investment sizes and timelines; use our NPV & IRR Calculator

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Disclaimer: ROI figures cited are illustrative and based on historical data. Individual results vary. This article is for educational purposes only.