Paying Less Than Guidance Value in Bangalore: What Income Tax Does

Income tax has a rule for homes that change hands for less than the guidance value set by the state. If the gap is wide, the tax department reads it as income in the buyer's hands and as a higher sale price in the seller's. Here we walk through the test, the 10% allowance, sample figures for Bangalore deals and the steps that keep a purchase clean.

Where the Gap Comes From

Karnataka fixes guidance values zone by zone and updates them now and then. Buyers and sellers, on the other hand, agree prices one deal at a time. Across most of Bangalore, deals close above the official rate, and nobody has to think about this rule.

A deal can still land below the official figure. These are the usual reasons:

• An owner short of time takes the first reasonable offer
• A fresh revision pushes the official rate past what buyers in that lane actually pay
• The home carries a flaw, for example a cramped approach road, an ageing structure or a case in court
• Family members or close friends agree a lower price among themselves

Tax law calls the official figure the "stamp duty value". In Karnataka that is simply the guidance value applied to the home when the deed is registered.

The Quick 1.1 Test

Take the agreed price and multiply it by 1.1. When the official figure comes out equal to or lower than the result, no one in the deal has anything extra to report. Four sample deals show how this plays out:

The line is a cliff, not a slope. A Rs. 75 Lakh deal can carry a gap of up to Rs. 7.5 Lakhs at no tax cost, yet a Rs. 9 Lakh gap is counted in full on both sides.

What the Buyer Faces

A buyer who pays below the stamp duty value for land or a building may have the shortfall treated as "income from other sources". The old 1961 law placed this in section 56(2)(x). Purchases made on or after 1 April 2026 come under the new 2025 Act's section 92(2)(m), and the test has not changed.

Tax applies only if the shortfall is larger than both of these:

• 10% of the amount paid
• Rs. 50,000

Cross that line and the entire shortfall is added to income at the buyer's own slab. The 10% is a trigger point and is never subtracted. On a Rs. 15 Lakh shortfall, someone in the 30% bracket owes roughly Rs. 4.68 Lakhs including cess, with any surcharge extra.

Family deals

The buyer's rule does not reach property bought from someone the tax law counts as a relative. That list includes a spouse, parents, children, siblings and the spouses of siblings, among others. The seller in such a deal is still tested in the usual way.

What the Seller Faces

The seller's side looks at the very same gap. Where the home was held as a capital asset, the gain is computed as though the stamp duty value had been received. Section 50C held that rule in the old law, and section 78 holds it in the new one.

Builders who sell flats out of stock-in-trade meet a parallel rule for business income, found in section 53 today (section 43CA in the old law). This allowance helps here as well: an official figure up to 110% of the deed price leaves that price untouched.

Take the last table row. Long-term gain for the seller climbs by Rs. 15 Lakhs, adding close to Rs. 1.95 Lakhs in tax at 12.5% plus cess.

Registration Costs Do Not Fall

Writing a smaller price into the deed saves nothing at the registration office. The state levies both stamp duty and the registration fee on the bigger of two numbers, the deal price or the guidance value. Above Rs. 45 Lakhs, duty is 5%, which becomes 5.6% with cess and surcharge, plus 2% for registration.

Return to the Rs. 75 Lakh flat with an official rate of Rs. 84 Lakhs. Charges follow the higher number, so 7.6% of Rs. 84 Lakhs, close to Rs. 6.38 Lakhs, goes to the state. Any income tax on the gap is an extra cost over and above that.

Agreement Date or Registration Date?

For stamp duty, only the official rate in force on the registration day matters. Income tax is more flexible in one case. Where the price was settled in a written agreement ahead of the deed, the value applicable on the agreement date can replace it.

There is a catch. Some part of the price has to have been paid by the agreement date through a bank channel, such as a cheque, a demand draft or an online transfer. This helps most with flats bought under construction, where a guidance value revision often lands between booking and the final deed.

Disputing an Inflated Guidance Value

Now and then the official rate is plainly higher than what the home would fetch. During assessment, the taxpayer can contest it and request that the assessing officer involve the department's own Valuation Officer. Where that officer arrives at a lower value, the lower value is applied.

Supporting papers make the case stronger. A certified valuation from a registered valuer, photos of the home and records of sales nearby all help. It is easiest to collect these when the deal happens, not years later.

TDS, Loans and the Later Sale

A buyer purchasing from a resident seller deducts 1% tax at source once either the deal price or the stamp duty value touches Rs. 50 Lakhs. The deduction is on the higher of those two figures, so deducting on a smaller deed price leaves a shortfall. Banks size the loan on the deed price or the bank's valuation, taking the smaller one.

Being taxed on the gap has a later benefit. The taxed stamp duty value becomes the buyer's cost when the home is sold in future. The future gain shrinks as a result, so the same rupees are not taxed twice.

Before the Price Is Agreed

Most trouble is avoided with simple sums done before anyone signs. Buyers and sellers can work through this list together:

• Check the present guidance value for that exact property and its category on the Kaveri portal
• Compare that value with the offered price multiplied by 1.1
• Put the agreement in writing and pay a portion through the bank no later than the day it is signed
• Plan stamp duty, registration and the 1% TDS on whichever figure is higher
• Where the low price is genuine, keep a valuation report plus proof of the reasons
• Have a chartered accountant work out both sides' tax before the price is locked

Our advisers can prepare a full cost sheet for any home before booking. To see how the loan and upfront charges fit together, try the EMI calculator.