Buying Property Below Guidance Value in Bangalore: The Income Tax Effect

A home in Bangalore is sometimes sold for less than its guidance value, the minimum value the Karnataka government sets for stamp duty. Income tax law treats a wide gap between the two figures as income, and it can do so for the buyer and the seller at once. This guide explains when that happens, how the 10% margin works, what the numbers look like and how to stay clear of the problem.

Why a Price Can Fall Below Guidance Value

Guidance values are set area by area and revised from time to time, while prices are settled deal by deal. In most parts of Bangalore the market price is above the guidance value, so the question never comes up. It arises in a smaller set of cases:

• A seller who needs a quick sale accepts a low offer
• A revision lifts the guidance value above what buyers in that street are paying
• The property has a drawback, such as a narrow access road, an old building or a pending dispute
• The sale is between relatives or friends at a friendly price

Our guide to guidance value covers how the figure is set and looked up. For income tax, the term used is "stamp duty value", which in Karnataka means the guidance value adopted for the property at registration.

Stamp Duty Is Charged on the Higher Figure

A lower price in the sale deed brings no saving at the sub-registrar's office. Stamp duty and the registration fee are worked out on the agreed price or the guidance value, whichever is higher. For a home above Rs. 45 Lakhs that means 5% stamp duty, cess and surcharge that take it to 5.6%, and a 2% registration fee.

A flat bought for Rs. 90 Lakhs with a guidance value of Rs. 1.05 Crore is therefore charged on Rs. 1.05 Crore. At 7.6%, the buyer pays about Rs. 7.98 Lakhs at registration, the same as a buyer who paid the full guidance value. The income tax effect comes on top of this.

How the Buyer Is Taxed

When a person buys land or a building for less than its stamp duty value, the difference can be taxed as the buyer's income from other sources. The rule was section 56(2)(x) of the Income-tax Act, 1961. For purchases from 1 April 2026 it is section 92(2)(m) of the Income-tax Act, 2025, with the same test.

The difference is taxed only when it is more than both of these limits:

• Rs. 50,000
• 10% of the price paid

Once the gap crosses the limit, the whole difference is added to the buyer's income, and the tax follows the buyer's slab rate. The margin is a threshold and does not work as a deduction. A buyer in the 30% slab who is taxed on a gap of Rs. 15 Lakhs pays about Rs. 4.68 Lakhs with cess, before any surcharge.

Purchases from relatives

Property received from a relative, as the tax law defines the term, is outside this rule. Spouses, parents, children, brothers and sisters and their spouses are among those covered. A low-priced sale within the family therefore does not create income for the buyer, although the seller's side of the rule still applies.

How the Seller Is Taxed

The seller is tested on the same gap. For an owner who held the property as an investment, capital gains are worked out as if the sale price were the stamp duty value. This was section 50C of the 1961 Act and is section 78 of the 2025 Act. A developer selling flats held as stock faces the matching rule for business income, formerly section 43CA and now section 53.

The same 10% margin applies. When the stamp duty value is within 110% of the price, the actual price is accepted for the seller as well. Above that, the full stamp duty value replaces the price in the seller's tax working.

The 10% Margin in Numbers

A quick test is to multiply the agreed price by 1.1. If the guidance value is at or below that figure, neither party has extra income to report. The table shows four cases:

The third row shows how sharp the line is. A gap of Rs. 10 Lakhs has no tax effect, while a gap of Rs. 12 Lakhs is taxed in full for both sides. In the last row, the seller's long-term gain rises by Rs. 15 Lakhs, which adds about Rs. 1.95 Lakhs of tax at 12.5% with cess.

Which Date's Guidance Value Counts

Stamp duty always follows the guidance value on the day of registration. Income tax allows an earlier date in one situation. When the price was fixed in a written agreement before registration, the stamp duty value on the agreement date may be used instead.

This relief has a condition. At least part of the price must have been paid on or before the agreement date through the banking system, such as a cheque, bank draft or electronic transfer. It matters most for under-construction flats, where the agreement and the sale deed are often years apart and a revision falls in between.

When the Guidance Value Is Higher Than the Real Market

Sometimes the guidance value is simply above what the property is worth. The tax law provides a route for this. A taxpayer who disputes the figure during assessment may ask the assessing officer to refer the property to a Valuation Officer of the Income Tax Department.

If the officer's valuation is lower than the stamp duty value, the lower figure is used. A valuation report from a registered valuer, photographs and details of nearby sales help to support the claim. The reasons for the low price are best gathered at the time of purchase, when the evidence is fresh.

Other Effects of the Gap

The 1% tax deducted at source on a purchase from a resident seller applies when the price or the stamp duty value is Rs. 50 Lakhs or more. It is worked out on the higher of the two, so a buyer who deducts on a lower price falls short. For a home loan, the bank lends against the lower of the price and its own valuation.

There is one offset for a buyer who has been taxed on the gap. The stamp duty value that was taxed becomes the cost of the property when it is sold later. This lowers the capital gain at that stage, so the same amount is not taxed a second time.

Checks Before Fixing the Price

A few minutes of arithmetic before the agreement is signed settles most of this. These steps cover both parties:

• Look up the current guidance value for the exact property and its type on the Kaveri portal
• Multiply the proposed price by 1.1 and compare it with the guidance value
• Pay part of the price by bank transfer on or before the agreement date, and keep the agreement in writing
• Budget stamp duty, the registration fee and the 1% tax deduction on the higher figure
• Keep a valuation report and evidence of the reasons where the price is genuinely low
• Ask a chartered accountant to work out the tax on both sides before the price is final

Our team is glad to help with the cost working for any home on the site. The EMI calculator shows how the loan and the upfront charges fit together.