Below-Guidance-Value Home Purchases in Bangalore: Tax Rules for Both Sides

Every property in Karnataka has a guidance value, the floor rate the state uses to collect stamp duty. When a Bangalore home is sold for noticeably less than that rate, income tax law can step in on both sides of the deal. This article sets out the registration cost, the tax rules for each party, the 10% leeway, worked figures and a short checklist.

First, the Registration Bill

A low price on paper does not lower what is paid to register the deed. The sub-registrar works out duty and fees on the bigger of two numbers: the price agreed or the official rate. For homes costing more than Rs. 45 Lakhs, the 5% duty grows to 5.6% once cess and surcharge are added, and the registration fee is 2%.

Consider a Rs. 1 Crore flat whose official rate works out to Rs. 1.12 Crore. Charges are levied on Rs. 1.12 Crore, which at 7.6% comes to about Rs. 8.51 Lakhs. Whatever income tax follows is a separate bill. A buyer who pays the full Rs. 1.12 Crore would hand over exactly the same registration amount.

How Often Does This Happen?

It is uncommon in Bangalore, where most homes trade above the official rate. Guidance values move only when the state revises them, while real prices are struck afresh in every deal. The gap tends to flip the other way in situations like these:

• A distress sale where the owner needs money fast
• A revision that raises the official rate above recent street prices
• A home with a defect, such as poor road access, an old structure or a title dispute
• A sale to family or friends at a concessional figure

In tax language, the guidance value adopted at registration is called the "stamp duty value". Both terms appear below, and in Karnataka they point to the same number.

The 10% Leeway, Explained

The law ignores small gaps. A stamp duty value up to 110% of what was paid is set aside, and the price stands for buyer and seller alike. For the buyer there is a second floor as well: the gap must be more than Rs. 50,000.

Once the gap goes past 10%, the leeway disappears entirely. The full gap is counted, including the first 10%. Here is how several deals compare:

So a buyer of a Rs. 1 Crore home can absorb a Rs. 10 Lakh gap with no tax at all. At Rs. 12 Lakhs, every rupee of the gap is taxed.

Where the Seller Stands

For an owner selling an investment property, capital gains are computed by replacing the sale price with the stamp duty value. The 1961 Act did this through section 50C, and the Income-tax Act, 2025 does it through section 78. Developers selling inventory face the business-income version: section 53 now, section 43CA before.

Using the Rs. 90 Lakh deal from the table, the long-term gain on the seller's side rises by Rs. 15 Lakhs over what the deed suggests. With the 12.5% rate and cess, that adds around Rs. 1.95 Lakhs of tax.

Where the Buyer Stands

Buying land or a building below its stamp duty value can give the buyer taxable "income from other sources". Under the 1961 Act, section 56(2)(x) covered this. From 1 April 2026, the 2025 Act carries it as section 92(2)(m), applying the same conditions.

The amount is taxed at the buyer's normal slab rate. In the 30% slab, a Rs. 15 Lakh gap means roughly Rs. 4.68 Lakhs of tax with cess, and surcharge where it applies.

Buying from a relative

A purchase from a relative, as defined in the tax law, does not attract the buyer's rule. Husband or wife, parents, children, brothers, sisters and their spouses all qualify. The seller is still assessed in the normal way in such sales.

Locking In the Earlier Guidance Value

Stamp duty is tied to the guidance value in force on the registration date. For income tax, the value on the date of a written sale agreement may be used if the price was fixed then. This matters when a revision falls between signing and registration.

To use it, at least some money must have moved by the agreement date, through banking channels such as a cheque, draft or electronic payment. Under-construction purchases benefit most, since years can pass between the agreement and the deed.

If the Official Rate Is Simply Too High

A guidance value can overstate what a home is really worth. In that case the taxpayer can object during assessment and request that the assessing officer refer the valuation to the Income Tax Department's Valuation Officer. A lower figure from that officer is the one used.

Evidence collected when the home is bought carries weight. A registered valuer's opinion in writing, photographs and details of comparable sales in the area are all useful.

Knock-On Effects

Three other points are worth noting:

• TDS of 1% applies when buying from a resident seller once either figure, price or stamp duty value, reaches Rs. 50 Lakhs, and it is computed on whichever is higher
• Lenders cap the loan using the smaller of the deal price and the lender's valuation
• A buyer taxed on the gap can treat the stamp duty value as cost on a later sale, which trims that future gain

A Short Pre-Signing Checklist

These steps take little time and protect both parties:

1. Look up today's guidance value on the Kaveri portal for the exact property and category
2. Check it against the offered price times 1.1
3. Sign a written agreement and route part of the payment through a bank by that date
4. Budget for duty, registration charges and 1% TDS on the higher figure
5. File away a valuer's report when there is a real reason for the low price
6. Get a chartered accountant to compute the tax for buyer and seller before finalising

Our team can share a complete cost breakdown for any listed home. The EMI calculator helps show the loan alongside the upfront costs.