Section 50C and 43CA Stamp Value Calculator

How the calculation works

1. If the stamp duty value is 110% of the sale consideration or less, the actual consideration is accepted.
2. If it is higher, the stamp duty value becomes the deemed full value of consideration (section 50C for a capital asset, section 43CA for stock-in-trade).
3. The stamp duty value on the agreement date can be used instead when the conditions on payment by non-cash modes are met; a valuation officer’s figure is used only if one has actually been determined.

Background and professional notes

Income-tax deemed consideration versus state stamp duty

A stamp-duty calculator tells you what the state may charge for registration. Sections 50C and 43CA address a different question: for income-tax purposes, must a seller use the official stamp valuation instead of the agreed consideration? Section 50C generally deals with capital assets comprising land or buildings; Section 43CA deals with such assets held as stock in trade. Keeping those search intents separate prevents a stamp-duty page from giving the wrong taxable gain or property-business revenue.

How the 110% tolerance works

Under the standard FY 2025–26 framework, no deeming uplift arises where stamp value does not exceed 110% of the recorded consideration. A ₹1 crore sale price and ₹1.08 crore stamp value fit within this tolerance; a ₹1.13 crore stamp value does not. The tool reports the preliminary deemed consideration and the resulting uplift, not the final capital gain or tax liability. Certain historical or special provisions can have different tolerances and are deliberately outside the arithmetic screen.

Agreement-date option requires payment evidence

A stamp value on an earlier agreement date may be used when conditions about agreement, registration and receipt of all or part of consideration through accepted non-cash modes are satisfied. Merely entering an older value without qualifying payment proof can materially understate taxable consideration. The checkbox is a user representation of documentary validation, not a shortcut to establish legal eligibility.

Objections and valuation officer references

If the seller disputes stamp valuation and statutory prerequisites are met, the assessment may involve reference to a valuation officer. The optional input must be a verified assessed figure, not a self-chosen fair value. The calculator applies a simplified lower-of rule subject to the agreed consideration floor; it does not decide procedural admissibility. Hold the agreement, advance bank statement, valuation order, conveyance, indexed costs and corresponding buyer-side tax analysis before filing.

Assumptions and what this calculator does not cover

• FY 2025-26 under the 1961 Act with the standard 10% tolerance. Special-period relaxations and the Income-tax Act, 2025 mapping are outside the screen.
• The result is the deemed consideration, not the capital gain; cost, indexation and exemptions are separate. Buyer-side taxation under section 56(2)(x) is not computed.
• Section 50C and 43CA are seller income-tax rules, not stamp duty rates.
• Agreement-date stamp values require payment timing and mode evidence.
• Valuation-officer inputs require a genuine official determination.

Official sources and further reading

• Income Tax Department: section 50C
• Income Tax Department: section 43CA

Rates and rules were checked against these sources on 11 October 2026. Notifications and standards change; confirm on the official site before you file, book or advise.