Rent Or Buy Calculator

What this actually puts on the scales

Nine inputs, two totals, one comparison. Before trusting it, it is worth knowing exactly which sums are in each total, because that determines what question you are actually getting an answer to.

So this is a cash out comparison. It adds up what leaves your bank account under each choice over a chosen number of years, and tells you which pile is smaller.

That is a real question and a useful one, particularly if the thing keeping you awake is monthly affordability. It is not the same question as which choice leaves you wealthier, and the gap between those two questions is the subject of most of this page.

One detail worth crediting: if your analysis period runs longer than your loan term, the calculator stops counting mortgage payments when the loan ends, but keeps counting tax and insurance. So a fifteen year loan viewed over thirty years does not charge you thirty years of instalments. That is the right behaviour and a surprising number of tools get it wrong.

Eighty lakh against twenty five thousand a month

A flat at ₹80,00,000 with ₹16,00,000 down, a 20 year loan at 8.5 percent, property tax of 0.5 percent, insurance of ₹12,000 a year. The alternative is renting something comparable at ₹25,000 a month, rising 7 percent a year. Looking 10 years ahead.

The loan is ₹64,00,000, which at 8.5 percent over 20 years gives an instalment of ₹55,541.

On the rent side, ₹25,000 rising 7 percent a year reaches ₹45,961 by year ten, and the ten year total is ₹41,44,934.

So the calculator reports renting as cheaper by ₹30,39,948, and on the question it is answering, that is correct. Thirty lakh less money left your account.

Now hold that number, because we have not finished.

The four columns a full comparison uses

Look at how the large property portals structure this and they all converge on the same four buckets, whatever they call them. Redfin, Zillow and the New York Times all use versions of it.

The tool above covers the middle of the second row and nothing else. Which is why its answer feels lopsided in both directions at once.

It is too kind to buying, because it never charges you the down payment, the registration and stamp duty, or a rupee of maintenance.

It is too harsh on buying, because after ten years of those instalments you own a substantial part of a flat, and none of that is credited back.

Those two errors do not cancel. They are individually enormous.

What sits outside the totals, and how to add it

Here is the same example with the missing pieces put in. Each of these is a number you can work out in a minute and add by hand.

Run those through and the balance moves a very long way. Ignoring appreciation entirely, meaning the flat is worth exactly what you paid ten years later, the fuller buying cost comes to about ₹85,72,000 against rent's ₹41,45,000. Renting is ahead by more than forty four lakh, which is a wider gap than the tool suggested, not a narrower one.

That surprises people. The reason is the opportunity cost: sixteen lakh sitting in a flat that has not appreciated is sixteen lakh not compounding elsewhere, and over ten years at nine percent that alone is nearly twenty two lakh of foregone growth.

Which sets up the actual question.

The number that decides it is not on the form

Everything above assumed the flat is worth what you paid for it in ten years. Change that one assumption and watch what happens.

The answer crosses over at roughly 4.6 percent a year. Below that, renting wins. Above it, buying wins. And nothing else in the example changed.

So the honest summary of the rent versus buy question, for this flat, at these rates, over this horizon, is a single sentence: it depends entirely on whether property in your area appreciates faster than about 4.6 percent a year.

That is a genuinely useful thing to know, because it turns an unanswerable question into a researchable one. You cannot know what the market will do. You can look up what it has done in your city over the past ten and twenty years, and decide whether the number you need is plausible or heroic.

It also explains why rent versus buy verdicts differ so violently between people and between cities. They are not disagreeing about arithmetic. They are disagreeing about one growth rate.

Our rent increase calculator compounds the rent side, and our CAGR calculator will tell you the annual rate implied by any two property values you can find, which is the cleanest way to test whether 4.6 percent is a reasonable bar in your market.

Why the horizon does most of the work

Change nothing except the number of years and the answer moves, sometimes reversing. There are two reasons, and both are structural rather than about any particular market.

Buying front loads its costs. Registration, stamp duty and legal fees are paid once, on day one, and get spread over however long you stay. Over two years they are crushing. Over twenty they are almost invisible.

Early instalments barely repay anything. On our loan, the first year's instalments are overwhelmingly interest. Equity builds slowly at first and then accelerates, which is the same front loading our repayment calculator demonstrates row by row.

Put those together and short stays favour renting almost regardless of the market, while long stays favour buying unless prices stagnate. The year where the two lines cross has a name in the industry, the breakeven horizon, and it is the number most large portals lead with.

The practical version: if you know you will move within three or four years, the arithmetic rarely rescues buying. If you expect to stay ten or more, it usually can, provided the appreciation assumption holds.

A related thing worth doing. Rather than accepting one answer, run the calculator at several horizons, five, ten, fifteen, and see where the gap narrows. If your realistic stay is well past that point, the decision is more comfortable than any single number suggests.

The parts no calculator reaches

Two of these are financial and simply too personal to model. Three are not financial at all and matter anyway.

Tax treatment. In India, home loan interest and principal repayment attract deductions under the Income Tax Act, and rent paid can attract HRA exemption for salaried employees. Which of those you can actually claim depends on your tax regime, your salary structure and whether the property is self occupied. It can move the comparison by a meaningful amount in either direction, and no general calculator can know your position.

What you do with the difference. The opportunity cost figure above assumes a renter actually invests the money not spent on a down payment. Renters who invest the difference genuinely do accumulate wealth. Renters who spend it do not, and for them the forced saving inside a mortgage instalment is worth more than any spreadsheet says.

Mobility. Renting can be exited with a month's notice. Selling a flat takes months, costs a few percent, and cannot be rushed when you need to move for a job.

Control and security. Owners can renovate, keep pets, and cannot be asked to leave. Tenants deal with rent revisions, inspections, and the possibility of a landlord selling.

Concentration. Buying puts a very large share of your net worth into one asset, in one city, funded by debt. That is a real risk position and it does not appear anywhere in a cost total.

None of this argues either way. It argues that the calculator should narrow the question rather than settle it.

Questions people ask

Is the down payment included in the buying total?

No. The total covers instalments, property tax and insurance only. Add the down payment, registration costs and maintenance yourself, and subtract the equity you will have built.

Does it credit me for owning the flat at the end?

No, and this is the largest omission. After ten years on the worked example you would own roughly ₹35,20,000 of equity before any appreciation, and considerably more with it.

Why is there no field for property appreciation?

Because the tool is comparing cash outflows rather than net wealth. Appreciation is the single most important input to the wealth question, which is why this page works it through separately.

What should I assume for maintenance?

Around 1 percent of the property's value a year is the common rule of thumb, higher for older buildings. Society or maintenance charges are on top of that and are usually a fixed monthly figure.

How do I find my own breakeven?

Run the tool, add the missing items listed above, then try different appreciation rates until the two totals meet. On the worked example that happens at about 4.6 percent a year.

I might move in three years. Does that change things?

Considerably. Buying costs are heavily front loaded and early instalments repay very little principal, so short horizons favour renting almost regardless of the market.

What about tax benefits on a home loan?

They are real and not modelled here, since they depend on your tax regime, salary structure and whether the property is self occupied. Work out your own position and treat it as a reduction in the buying cost.

References

A note on the sources. The four column structure used to check what this calculator does and does not cover is the framework the large US property portals converged on independently, and Redfin publishes its own version of it, which is why it is cited here rather than a textbook. The affordability question sitting underneath the whole comparison, meaning what share of income housing should take, follows the Department of Housing and Urban Development's cost burden standard, including its own acknowledgement that a fixed percentage means different things at different incomes. The compounding that drives both the rent escalation and the opportunity cost figure is defined by the Securities and Exchange Commission's investor education office.

1. Redfin, Rent vs. Buy Calculator, on the four categories used to compare the two choices: initial costs, recurring costs, opportunity costs and net proceeds, and on down payment plus closing costs commonly reaching a substantial share of purchase price. https://redfin.com/rent-vs-buy-calculator
2. Zillow, Rent vs Buy Calculator, on the breakeven horizon as the number of years at which the cost of buying equals the cost of renting, and on comparing equity built against investment returns on the money not spent. https://www.zillow.com/rent-vs-buy-calculator
3. U.S. Department of Housing and Urban Development, Office of Policy Development and Research, Rental Burdens: Rethinking Affordability Measures, HUD USER, on cost burden and the limits of income ratio measures. https://www.huduser.gov/portal/pdredge/pdr_edge_featd_article_092214.html
4. U.S. Securities and Exchange Commission, Office of Investor Education and Advocacy, Compound Interest, Investor.gov glossary, on growth applied repeatedly to an increased base, which drives both the rent escalation and the opportunity cost calculation. https://www.investor.gov/introduction-investing/investing-basics/glossary/compound-interest