What Is the Rent vs Buy Decision?
The Rent vs Buy decision evaluates whether purchasing a residential property creates higher long-term net wealth than renting a home and investing the cost difference into high-yielding equity SIPs.
In Indian metropolitan cities, rental yields are low (typically 2.5% to 3.5%), while home loan interest rates average 8.4% to 9.0%. This creates a significant monthly cash flow difference between renting and paying an EMI for an equivalent home.
This calculator models the exact compounding dynamics of both options: home price appreciation, loan principal paydown, annual rent escalation, and the opportunity cost of investing the down payment and monthly savings into mutual funds.
Evaluating property yield or loan options? Use the Rental Yield Calculator or project SIP mutual fund growth with the SIP Calculator.
Rent vs Buy Mathematical Model
The mathematical model tracks two parallel balance sheets across N years.
Scenario A: Buying a House
Buy Net Worth = Property Price × (1+g)^n - Outstanding Loan BalanceScenario B: Renting & Investing Savings
Initial Investment = Down Payment + Stamp DutyMonthly SIP = (Monthly EMI + Maintenance) - Monthly RentRent Portfolio = Future Value of Initial Investment + Future Value of Monthly SIPsWorked Example: Rs 80 Lakh Property vs Rs 25,000 Rent (15 Years)
Assume a Rs 80 lakh property (Rs 16 lakh down payment + Rs 4.8 lakh stamp duty), 8.5% loan rate, 6% property CAGR vs Rs 25,000 rent (5% annual escalation) and 12% equity SIP return.
Opportunity Cost of Down Payment
Locking Rs 20 lakh into a property down payment deprives you of 12% compounding in equity markets. Over 15 years, Rs 20 lakh invested at 12% CAGR grows to over Rs 1.09 crore. This opportunity cost is the primary reason renting often outperforms buying in low rental-yield Indian markets.
Year-by-Year Wealth Schedule
The table above details how buying net worth starts lower due to stamp duty and loan interest upfront, but catches up over time as the home loan balance is paid off.
Rental Yield Impact on the Decision
Rental yield (Annual Rent ÷ Property Value) dictates whether renting or buying wins.
| Rental Yield % | Monthly Rent on Rs 80L Property | Financial Winner |
|---|---|---|
| 2.5% | Rs 16,667 | Renting & SIP Wins Significantly |
| 3.5% | Rs 23,333 | Renting & SIP Wins Moderately |
| 5.0% | Rs 33,333 | Break-even / Buying Competitive |
| 7.0%+ | Rs 46,667 | Buying Wins Clearly |
Tax Impact: Section 24(b) vs HRA Exemption
Tax benefits can tilt the math under the Old Tax Regime.
Rent vs Buy Formula in Excel
Model rent vs buy wealth comparison in Excel using FV and PMT functions.
A1: Down Payment | B1: Monthly EMI | C1: Monthly Rent | D1: SIP Rate | E1: Yrs=FV(D1/12, E1*12, -(B1-C1), -A1)Common Mistakes in Rent vs Buy Analysis
How to Make Your Decision
- Check tenure horizon: if living in the city under 7 years, renting almost always wins due to high transaction friction costs.
- Evaluate local rental yield: if yield is under 3%, renting & SIP is mathematically stronger.
- Factor emotional security: home ownership offers stability, landlord independence, and emotional peace that math cannot quantify.
How to Use This Calculator
- Enter property price and rent: input target property valuation and current rent for similar homes.
- Set growth and return rates: set property CAGR % and mutual fund SIP return %.
- Review net wealth difference: compare buying net worth against renting investment portfolio over your time horizon.
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Frequently Asked Questions
Disclaimer: All figures on this page are indicative estimates based on user inputs and assumed growth rates. Real estate price growth and mutual fund returns are subject to market risks and cannot be guaranteed. This tool is for educational purposes only and does not constitute financial or real estate advice. Consult your financial adviser before making housing decisions.