Rent vs Buy Calculator

Rent versus buy is one of the most consequential personal finance decisions an Indian middle-class family makes. Buying a home is an emotional and cultural milestone in India — yet the financial math has shifted significantly over the last decade. Property prices in major metros (Bengaluru, Pune, Mumbai, Hyderabad, NCR) have grown only 3-7% per year while equity SIPs have grown 11-13%. The 'always buy as soon as you can' advice from older generations is no longer obviously right. This rent vs buy calculator runs both scenarios with realistic Indian assumptions over your chosen time horizon, so you can see the actual financial gap before letting emotion or family pressure drive the decision.

The calculator compares two parallel scenarios. In the 'buy' scenario, you make a down payment (typically 20-25% of the property price), pay stamp duty and registration (5-8% depending on state), and take a home loan for the balance at the prevailing rate. Over your time horizon, you pay the EMI every month, plus annual maintenance, society charges and property tax. At the end of the horizon, the property has appreciated at the assumed rate (be conservative — 5-7% is realistic in most Indian cities now).

In the 'rent' scenario, the same down payment is invested in equity mutual funds at the assumed long-term return (10-12% is reasonable). Each month, the rent paid is compared to what the EMI would have been; the difference (which is positive in early years) is also invested at the same return. The calculator tracks the running invested corpus over time. At the end of the horizon, the comparison is the total wealth in each scenario — net of money spent on rent in the rent scenario, and net of money spent on EMIs and ownership costs in the buy scenario.

The single most important driver of the verdict is the price-to-rent ratio. Calculate the property price divided by annual rent for an equivalent house. If a ₹1.5 crore property rents for ₹35,000 a month (₹4.2 lakh annually), the price-to-rent ratio is roughly 36. As a rough rule, ratios under 20 strongly favour buying, ratios above 30 strongly favour renting, and ratios between 20 and 30 are the grey zone where intangibles dominate the decision. Most Indian metros today have ratios in the 25-40 range, especially for premium/upper-middle-class housing.

The second driver is the property appreciation assumption. There is a strong cognitive bias to assume the spectacular appreciation of 2003-2010 (when Indian metros doubled in 5 years) will continue. The reality is that residential price-to-income ratios in Bengaluru, Mumbai and parts of NCR are now near global highs, and further sustained 10%+ appreciation requires either income growth or a fundamental supply shortage. Both of these are highly local. Be conservative: 5-7% is the realistic base case for most Indian metros over the next 10-15 years; assume more only if you have specific evidence (a major infrastructure project, a sudden supply constraint).

The third driver is the equity return assumption. If you assume equity returns of 14-15% (the strong 2003-2010 era), renting wins almost every scenario. If you assume 8-9% (a bearish view), buying often wins. The historical Indian equity index return is around 11-13% over 15+ year periods; assuming 10-11% is a reasonable conservative base case.

The fourth driver is your time horizon. Buying has high one-time transaction costs (stamp duty 5-7%, registration 1%, brokerage 1-2%, legal and other ~0.5%). These costs are amortised over your holding period; over 5 years they are 1.5-2% per year, over 20 years they are 0.4-0.5% per year. Buying for a 5-year horizon is almost always financially worse than renting because you cannot recover transaction costs through appreciation that fast. Buying makes financial sense typically only for 7+ year horizons.

Finally, this calculator captures the financial dimension only. The non-financial dimensions of homeownership — security, identity, the freedom to renovate, the cultural acceptance, the safety net for retirement — are real and important, but they vary enormously by individual. Some people would happily pay 30-40% extra to own; others are indifferent. Use the calculator to know what the financial gap is, then make a deliberate choice including the non-financial considerations. The worst outcome is to buy a house you can barely afford because everyone said you should.