When you sell property in India — whether as a developer clearing inventory or an individual selling a flat — the Income Tax Department uses the Stamp Duty Value (circle rate) as the minimum benchmark for computing tax. If your sale price is lower than the circle rate, tax is computed on the higher circle rate figure. Section 50C applies to capital assets; Section 43CA applies to business stock. Under the Income Tax Act, 2025, these continue as Sections 75 and 72 respectively. The 110% safe harbour gives meaningful relief when market prices are close to circle rates. This guide explains both sections with complete worked examples.
Use the Capital Gains CalculatorModel the tax impact alongside this guide.
Individuals, HUFs, companies selling property they hold as capital assets
Builders, property developers, dealers — selling property held as stock-in-trade
Income head
Capital Gains
Business Income (Profits and Gains of Business)
Tax computation
Full value of consideration = higher of actual price OR stamp duty value
Full value of consideration = higher of actual price OR stamp duty value
110% safe harbour
Yes — applies if SDV ≤ 110% of actual sale consideration
Yes — same 110% safe harbour applies
Valuation Officer reference
Yes — can request AO to refer to VO if SDV exceeds FMV
Yes — same provisions apply
New Act 2025 section
Section 75
Section 72
The 110% Safe Harbour — The Most Practical Rule
The safe harbour rule protects genuine transactions where the market price is reasonably close to the circle rate. If the stamp duty value does not exceed 110% of the actual sale consideration, the actual sale price is accepted for tax purposes.
🏠 Worked Example 1 — Within Safe Harbour (Property Seller)
Property sold (flat, Mumbai)
₹95,00,000
Stamp Duty Value (circle rate)
₹99,00,000
110% of Sale Consideration
₹1,04,50,000
SDV (₹99L) < 110% test (₹1.045Cr)?
✅ Yes — within safe harbour
Value used for capital gains
₹95,00,000 (actual sale price accepted)
Tax saving vs if SDV applied
₹4L × 12.5% LTCG = ₹50,000 saved
🏠 Worked Example 2 — Outside Safe Harbour (SDV Used)
Property sold (plot, Pune)
₹80,00,000
Stamp Duty Value (circle rate)
₹1,00,00,000
110% of Sale Consideration
₹88,00,000
SDV (₹1Cr) < 110% test (₹88L)?
❌ No — exceeds safe harbour
Value used for capital gains
₹1,00,00,000 (SDV used, not actual price)
Extra tax on ₹20L difference at 12.5% LTCG
₹2,50,000 additional tax
⚠️
Buyer Implications — Section 56(2)(x): When a buyer purchases property at below stamp duty value and the difference exceeds ₹50,000 and is more than 10% of the stamp duty value, the buyer faces Section 56(2)(x) — the difference is taxable as income from other sources in the buyer's hands. So undervalued property transactions hurt both buyer and seller. The 110% safe harbour applies symmetrically — if within 110%, neither buyer nor seller faces additional tax.
Section 43CA — For Property Developers and Builders
Builders and real estate developers hold property as inventory (stock-in-trade). When they sell a flat or plot from their stock at below the circle rate, Section 43CA applies — the business income is computed on the stamp duty value, not the lower actual sale price.
Case Study: Sai Builders — Affordable Housing Sold Below Circle Rate
Real Estate Developer, Nagpur — FY 2025-26 Project Sale
Sai Builders sold 15 flats in a residential project at ₹35 lakh each (total ₹5.25 crore) during FY 2025-26. The Nagpur circle rate for that area was ₹40 lakh per flat (total ₹6 crore). They had purchased the land and constructed buildings as stock-in-trade — so Section 43CA applies (not 50C).
Option taken: Sai Builders' CA requested the AO to refer the matter to a Valuation Officer, as they argued the actual market rate of ₹35 lakh was genuine given location constraints
VO assessed FMV at ₹37 lakh per flat → lower of SDV (₹40L) or VO value (₹37L) = ₹37L per flat used
Taxable consideration reduced to ₹5.55 crore — additional tax saved ₹11.25 lakhs vs full SDV use
Actual Sale Price
₹5.25 crore
After VO Reference
₹5.55 crore
Full SDV Application
₹6 crore
Tax Saved via VO
₹11.25 lakhs
Section 50C — For Individual Property Sellers
If you're an individual selling a residential property, the capital gains are computed under Section 50C (new Act: Section 75). Key considerations:
The stamp duty value on the date of registration is used. If there's a gap between agreement date and registration date, and part payment was made by cheque/digital before registration, the stamp duty value on the agreement date can be used
Agricultural land beyond specified urban areas is not a capital asset — Section 50C does not apply
If the property is sold through court auction or compulsory acquisition, special provisions apply
After computing higher capital gains via SDV, you can still claim exemptions under Section 54 (new: Section 83), Section 54EC (new: Section 85), and Section 54F (new: Section 86) to reduce or eliminate LTCG tax
Old Act vs New Act — Section Mapping
Provision
Old Act 1961
New Act 2025
Change?
Stock-in-trade property (builders)
Section 43CA
Section 72
Same mechanics; 110% harbour applies
Capital asset property (individuals)
Section 50C
Section 75
Same mechanics; 110% harbour applies
Undervalued property in buyer's hands
Section 56(2)(x)
Section 2(1)(r) read with income definition
Same — buyer taxed on shortfall vs SDV
Reference to Valuation Officer
Section 50C(2) / 43CA(2)
Section 75(2) / 72(2)
Same process — AO refers to VO
LTCG exemption on property
Section 54 / 54EC / 54F
Section 83 / 85 / 86
Same — claim after SDV-based gains
📋
Budget 2024 LTCG Change Impact: From 23 July 2024, LTCG on property is taxed at 12.5% without indexation (down from 20% with indexation for properties bought before 23 July 2024, which can still use either method if more beneficial). When Section 50C/Section 43CA forces you to use a higher SDV, the 12.5% rate now applies to that inflated base. Always compute both old and new LTCG methods for properties acquired before July 2024 to choose the lower tax option.
Section 43CA / 50C (New: 72/75) — Key Points
Section 50C (new: 75): Capital asset property — full value of consideration = higher of actual price or SDV
Section 43CA (new: 72): Stock-in-trade property — business income = higher of actual price or SDV
110% safe harbour: if SDV ≤ 110% of actual price → actual price accepted for tax
VO reference: if SDV exceeds fair market value — request AO to refer; lower of SDV or VO value used
Buyer is also hit: if purchase below SDV with >10% and >₹50K difference → Section 56(2)(x) taxes buyer
Agreement date vs registration date: if partial payment by cheque/digital before registration, SDV on agreement date can be used
Post-SDV capital gains can still be exempted via Sections 54/54EC/54F (new: 83/85/86)
For Tax Year 2026-27 onwards: cite Sections 72 and 75 in books and audit reports
For AY 2026-27 ITR (July 2026): use old Sections 43CA and 50C references
Section 50C (new Act: Section 75) applies when property is held as a capital asset — individuals, HUFs, companies selling investment property. Capital gains are computed using the higher of actual price or stamp duty value. Section 43CA (new Act: Section 72) applies when property is held as stock-in-trade — builders, developers, real estate dealers. Business income is computed on the higher of actual price or SDV. Both have the 110% safe harbour and Valuation Officer reference option.
If the stamp duty value (circle rate) does NOT exceed 110% of the actual sale consideration, the actual sale price is accepted for tax computation — the SDV is ignored. Example: Property sold for ₹95L, SDV is ₹1 crore. 110% of ₹95L = ₹1.045 crore. Since SDV (₹1 crore) is below ₹1.045 crore, the actual price of ₹95L is used. If SDV were ₹1.1 crore (115.79% of actual price), safe harbour fails and ₹1.1 crore is used for tax. This rule was introduced for AY 2021-22 (raised from 105% to 110%).
Yes. Under Section 50C(2) / Section 43CA(2), if you believe the SDV exceeds the actual fair market value, request the Assessing Officer to refer the matter to a Valuation Officer. The VO conducts an independent assessment. The lower of SDV or VO value is used for tax computation. This is particularly useful in areas where circle rates are significantly above market prices — common in tier-2 cities during market slowdowns. The request should be made when filing ITR or during assessment proceedings.