Section 78 of the Income-tax Act, 2025 — Special Provision for Full Value of Consideration (Stamp Duty Value Rule on Sale of Land or Building)

In plain language

What Section 78 actually says

When you sell a capital asset that is land or building (or both), capital gain is normally computed on the actual sale price you receive. Section 78 of the Income-tax Act, 2025 is an anti-under-valuation safeguard: if the consideration stated in your sale deed is lower than the stamp duty value (the circle rate / ready-reckoner value adopted by the state Sub-Registrar for stamp duty), then the stamp duty value is deemed to be the full value of consideration for computing capital gains under Section 72 (the charging/computation section for capital gains in the 2025 Act).

In plain words: the tax department will not let you show a sale price below the government's own registration valuation just to reduce capital-gains tax. Section 78 is the direct successor to Section 50C of the old Income-tax Act, 1961, carried into the new Act (effective 1 April 2026) with the same logic and the taxpayer-friendly reliefs that had been added over the years.

Who it applies to

• Any seller (transferor) of land, building, or both held as a capital asset — individuals, HUFs, firms, companies, NRIs, everyone.
• It applies whether the gain is short-term or long-term.
• It does not apply to immovable property held as stock-in-trade by a property dealer (a parallel rule governs business income), nor to assets that are not land/building (for unquoted shares, see Section 79).

The three key reliefs (conditions/limits)

• 110% safe harbour: If the stamp duty value does not exceed 110% of the actual consideration, the actual consideration is accepted as the full value. A small, genuine gap (up to 10%) is ignored — no addition is made.
• Date of agreement over date of registration: Where the agreement date (fixing the price) and the registration date differ, you may adopt the stamp duty value as on the agreement date — but only if part or full consideration was received on or before the agreement date through a specified banking or online mode (defined in Section 66(32), e.g. account-payee cheque, bank draft, ECS/NEFT/RTGS/UPI). Cash payment breaks this relief.
• Reference to the Valuation Officer: If you claim the stamp duty value is higher than fair market value and you have not disputed the stamp value before any other authority, the Assessing Officer must refer the matter to a departmental Valuation Officer (procedure in Section 269(3) to (8)). If the Valuation Officer's figure comes out higher than the stamp duty value, the stamp duty value (the lower figure) is used — the VO reference can only help you, not hurt you.

How it interacts with related sections

• Section 72 — Section 78 feeds the deemed sale price into the capital-gains computation machinery.
• Buyer's side (Section 56 / "income from other sources"): the mirror provision taxes the buyer if the property is bought below stamp value by more than ₹50,000/10%. So both sides of a low-value deal can be taxed — the seller under Section 78 and the buyer under the other-sources rule.
• Section 79 — the equivalent deeming rule for transfer of unquoted shares (old Section 50CA), where fair market value replaces low consideration.

Practical implications

• Always compare your sale price with the circle-rate value before signing. If the gap is over 10%, expect the higher stamp value to become your taxable sale price.
• Route the token/advance money through the bank and preserve the agreement, so you can lock the earlier (often lower) stamp value if prices rose before registration.
• If the circle rate is genuinely inflated versus real market value, ask for a Valuation Officer reference during assessment instead of quietly accepting the addition.
• Remember Section 78 only changes the sale consideration; your cost of acquisition, indexation and exemptions (e.g. reinvestment reliefs) continue to apply on the deemed figure.