Buy vs Rent Calculator: What Owning and Renting Really Cost Over 10 Years

The usual argument goes: “My EMI would be ₹1 lakh and my rent is ₹40,000, so renting is cheaper.” Or the reverse: “Rent is dead money; an EMI builds an asset.” Both are half right. Part of every EMI is principal, which you get back as equity when you sell. Part of it is interest, which is gone. Rent is gone too. The fair comparison is between money that is gone in each case, which economists call unrecoverable cost.

For an owner, the unrecoverable costs are stamp duty and registration, the interest paid to the bank, maintenance and property tax, and the return your own money would have earned if it hadn’t been tied up in bricks. Against those you set the rise in the home’s value, which is a gain. For a tenant, the unrecoverable cost is simply the rent. Whichever total is smaller over your horizon is the cheaper way to live in that home.

• Property price and down payment: the loan is the difference, repaid over 20 years at the interest rate you set.
• Rent for the same home: what a comparable flat in the same society or area rents for today.
• Annual rent increase: leases in Indian cities typically escalate about 5% a year.
• Property appreciation: the yearly rate at which you expect the home’s value to grow. Test more than one value.
• Maintenance: the monthly society charge and property tax an owner pays, rising 5% a year in the model.
• Return on money you’d invest instead: what your down payment, duty and principal repayments could have earned in, say, a balanced mutual fund. This is the opportunity cost of owning.
• Horizon: how many years you expect to stay. The default is 10.

Stamp duty and registration are set at 7% of the price, typical of most large states for a male buyer. Opportunity cost is charged on the upfront cash from day one and on each month’s principal repayment from the month it is paid, compounded at your investment return. The result shows both 10-year costs, which is cheaper and by how much, along with the EMI, the interest paid, the home’s value at the end and the price-to-rent ratio.

Take a ₹1.5 crore 3BHK in a Noida sector where comparable flats rent for ₹40,000 a month. You would put down ₹30 lakh and borrow ₹1.2 crore at 8.5% for 20 years, an EMI of ₹1,04,139. Maintenance is ₹5,000 a month. You assume 6% price growth, 5% rent escalation and a 7% return if you invested instead, and you plan to stay 10 years.

Buying comes out about ₹20 lakh cheaper over the decade. Notice what does the heavy lifting: ₹1.19 crore of price growth cancels out most of the ₹1.59 crore of interest, duty, maintenance and lost returns. Without that growth, owning would be far more expensive than renting. The next section shows how thin that margin is.

We changed one input at a time in the Noida example and noted which option came out cheaper.

The break-even growth rate is the most useful single number. Over 10 years, buying this flat beats renting only if prices rise faster than about 5.2% a year. Stay just five years and the bar rises to about 6.4%, because duty and other one-time costs have less time to be recovered. Stay 15 years and it falls to about 4.7%. If the rent were ₹55,000 instead of ₹40,000, buying would need only about 4.2% growth to win.

The investment-return line is the one people forget. If you are a disciplined investor who would genuinely put the down payment and the EMI-minus-rent difference to work at 10%, renting looks better. If the money would otherwise sit in a savings account, buying looks better. Be honest about which describes you.

Before running the full comparison, divide the price by a year’s rent. The Noida flat is ₹1.5 crore ÷ ₹4.8 lakh, or about 31x, which is the same as a 3.2% gross rental yield. The calculator shows this ratio with the rule of thumb used on this site.

Many premium Indian metro homes sit above 30x, which is why the buy-versus-rent decision in those markets depends so heavily on price growth. At 31x the Noida flat is in lean-rent territory, yet the full comparison still favours buying at 6% growth over 10 years. The ratio tells you where to look; the cost comparison tells you the answer for your numbers.

• You want stability: no forced moves when a landlord sells, no rent renegotiation every 11 months.
• You plan to stay a long time, ideally 10 years or more, in the same area. Time is the biggest ally of ownership.
• Your job and family situation are settled enough that a move is unlikely.
• You would not otherwise invest the difference. A home loan works as forced saving: the principal part of every EMI builds equity whether you feel disciplined or not.
• You can buy without stretching. An EMI within about 35–40% of take-home pay leaves room for rate rises and life events.

Equally, renting is a perfectly sound choice when you may move cities within five years, when your career is still changing fast, or when local prices look stretched against rents. There is no prize for owning early at the wrong price.

• Tax. Home-loan interest and principal deductions exist under the old tax regime but not under the new default regime, and gains on sale are taxed. Both could tilt the answer a little.
• Selling costs. Brokerage and other exit costs of 1–2% of the sale value would add to the cost of buying if you sell at the end.
• The renter’s security deposit, typically two to three months’ rent in most cities (higher in Bengaluru), which ties up money without earning much.
• Interiors and furnishing, which an owner usually spends on and a tenant of a furnished flat may not.
• Uneven price growth. The model uses one steady rate. Real markets move in cycles, so your exit year matters.
• Pre-EMI on under-construction homes, where you may pay rent and interest at the same time until possession.

• Comparing the full EMI with rent. Principal is savings, not cost; interest is the cost.
• Forgetting opportunity cost. A ₹30 lakh down payment could have earned a return; that lost return is a real cost of owning.
• Assuming past growth continues. Test the deal at the growth rate at which it breaks even and ask whether that is realistic for the locality.
• Buying for a short stay. Over three to five years, duty and other one-time costs usually tip the balance to renting.
• Stretching the budget. A home that makes the EMI uncomfortable turns a sound financial decision into a stressful one.

Use the calculator with numbers from the specific society you are considering, then check that locality’s price history on our price tracker. If the break-even growth rate is well below what the area has delivered over the past five years, buying has a margin of safety. If it is above, renting and investing the difference is the stronger plan.