Ready reckoner rates in Mumbai, and what they mean for your stamp duty

Why this catches people out

Buyers budget stamp duty as a percentage of the price they negotiated. If the reckoner rate for that building is higher than the price, the duty is higher than expected, and it lands in the week before registration when the budget is already committed.

It is checkable in advance, free, and takes minutes. It is on the IGR portal under e-ASR, and our stamp duty calculator will apply it for you once you know it.

The part almost nobody mentions: buying cheap has a tax consequence

This is the reason to read past the stamp duty point.

Where a property changes hands materially below the stamp duty value, the income tax rules treat the gap as if it were income for the buyer, and as if the seller had received the higher figure.

• ·For the buyer, section 56(2)(x) can treat the difference between the stamp duty value and what you actually paid as taxable income in your hands.
• ·For the seller, section 50C can deem the stamp duty value to be the sale consideration when working out capital gains, even though less money arrived.

So a bargain can be taxed twice over, once at each end.

There is a tolerance. Since Budget 2020, where the difference between the stamp duty value and the actual price is not more than 10 percent, neither section applies. Inside that band the transaction is left alone.

This is tax rather than property, so take the specifics to a chartered accountant. The point to carry away is simply that a price far below the reckoner rate is not a clean win, and it is worth knowing that before you negotiate rather than after.

Where the gap opens up, and where it closes

Across Mumbai, resale asking prices in 2025 to 2026 sat a median 103 percent above the reckoner rate for the same locality, so as a rule the reckoner is well below what a flat actually trades for. That figure is built on asking prices, not registered prices, so treat it as the direction of the gap rather than its exact size.

The gap is not even, and the reason is how the rate is set. One rate covers a whole zone, and a zone in Borivali or Kandivali holds thirty year old buildings without lifts and towers finished last year. The reckoner does allow a deduction for the age of a building, but it is a fixed schedule, nothing for a building under two years old rising to 70 percent at sixty years, and it applies only to the construction part of the value, not the land. It does not track what buyers will actually pay. So within a single zone the reckoner sits closest to the real price on the oldest buildings, and furthest below it on the newest. An old flat sold at a low price is where the reckoner can meet or overtake the agreed figure, with the duty and income tax consequences set out in the stamp duty article.

Which specific pockets of Borivali, Kandivali and Malad carry the narrowest gap is not something any published figure settles, and the answer changes every April. We check the reckoner value for the specific building before a price is agreed, once more when the agreement is drafted, and again if the deal crosses 1 April, because the rates are revised at the start of the financial year and the new figure applies from that day.

Before you agree a price

Check the reckoner rate for the specific building first, so the stamp duty figure you plan for is the one you pay. The stamp duty calculator works it out for you, and if you are looking at a flat in Borivali, Kandivali or Malad we will confirm the rate for that building on request.