Capital gains on property acquired before 1 April 2001 — fair market value substitution

For property sold today, the long-standing "bought in the 1970s, how do I index it?" problem has changed shape twice. Budget 2017 shifted the base year for the Cost Inflation Index from 1981 to 1 April 2001, and the Finance (No. 2) Act 2024 cut indexation out of the default tax computation for land and building entirely. This page deals with what remains: computing capital gains on property acquired before 1 April 2001, in the specific cases where the Income-tax Act still wants an indexed cost base.

When this calculation still matters

Since the 2024 rewrite, long-term capital gains on land or building are taxed at 12.5% without indexation by default. The pre-2001 fair-market-value calculation described on this page matters in three scenarios:

Resident individual or HUF, selling land or building acquired before 23 July 2024, choosing the 20% with indexation grandfathering option. The cost base can reach back to before 1 April 2001 if the property is that old.
Completed or litigating past assessments where indexation was in play (belated returns, revised returns, appeals).
Computing the cost of a co-owner's share where one co-owner is a resident claiming the indexation route.

NRIs and OCIs do not get the grandfathering option and, for current transfers of Indian land or building, do not need the pre-2001 FMV exercise — they pay 12.5% on the gain over the actual cost (inflation-unadjusted), with no substitution.

For the full post-2024 regime and worked examples, see how to calculate capital gains on property sold in India.

The base-year shift — what changed in 2017

Before Budget 2017, the Income-tax Act used 1 April 1981 as the CII base (CII = 100) and allowed a taxpayer to substitute FMV as on 1 April 1981 for the actual cost if the asset was acquired earlier. Several decades of inflation made 1981 FMVs hard to establish and open to abuse.

The Finance Act 2017, effective for transfers from FY 2017-18 onwards, made two linked changes:

The CII base year was shifted to 1 April 2001 (CII = 100 for FY 2001-02), and the full CII series re-baselined. The current chart runs from 100 in 2001-02 up to 376 in 2025-26 (see the CII chart).
Section 55(2)(b) was amended: for any capital asset acquired before 1 April 2001, the taxpayer can substitute the fair market value as on 1 April 2001 for the actual cost of acquisition, and index that FMV from 2001-02 forward.

So the old "FMV on 1 April 1981" exercise is no longer relevant for tax computation. The current equivalent is the FMV on 1 April 2001.

The stamp-duty-value cap — added in 2020

Taxpayers were substituting aggressive FMVs on 1 April 2001 to reduce gains. The Finance Act 2020 plugged this by adding a proviso to Section 55(2)(b): for land or building acquired before 1 April 2001, the FMV substituted cannot exceed the stamp-duty value of the property as on 1 April 2001.

Practical consequence:

Obtain the circle rate / jantri rate / guideline value that applied in the relevant sub-registrar's jurisdiction on 1 April 2001. Many state revenue departments maintain archival rate records; where they don't, the sub-registrar office can issue a certified extract.
Commission a registered valuer's report for comparable-sale FMV.
Take the lower of the valuer's FMV and the stamp-duty value on 1 April 2001 as your substituted cost.

Either number alone is not defensible in scrutiny — you need both, and the lower one wins.

Registered valuer — the practical route

For a property acquired in, say, 1975, the taxpayer normally does not have contemporaneous documentation of what the property would have fetched on 1 April 2001. The Income-tax Department-registered valuer (registered under Section 34AB of the Wealth-tax Act, 1957, and now under the Income-tax Rules) is the standard source.

The valuer:

Physically inspects the property.
Pulls comparable sales and circle rate data for the neighbourhood as of 1 April 2001.
Issues a signed valuation report with methodology, comparables, and the final figure.
Provides the stamp-duty value as on 1 April 2001 where ascertainable, to evidence the cap.

A typical report covers: location, size, age, construction quality, land and building splits, comparable-sales basis, and the FMV as on 1 April 2001 along with any cap applied. Keep the report in your return-filing pack and be ready to produce it if the assessment is picked up for scrutiny.

Inherited or gifted property acquired before 2001

Where the current seller acquired the property by inheritance, gift, succession, or partition, the cost base rolls back to the previous owner:

Date of acquisition for indexation purposes — whether this is the date of the previous owner's acquisition or the date of inheritance/gift — has been litigated. The CBDT and most judicial authority treat it as the date of the previous owner's acquisition for computing the holding period, but historically indexation was applied from the date the current owner received the asset. A body of case law (notably CIT v. Manjula J. Shah, Bombay HC, 2011) allows indexation from the previous owner's date. Practice varies; take a position consciously and document your basis.
Cost of acquisition in an inheritance case = cost to the previous owner (with the FMV-2001 substitution available if the previous owner acquired pre-1 April 2001).
Cost of improvement incurred by the previous owner or the current owner after 1 April 2001 is deductible; pre-2001 improvements are ignored (subsumed into the 2001 FMV).

For the inheritance framework more broadly, see inheriting property in India.

Worked example — resident seller, pre-2001 acquisition

A resident individual inherited a plot in 2005 that his father had bought in 1978. Father's original cost: ₹40,000. Plot is sold in August 2025 for ₹1.60 crore. Brokerage on sale: ₹3 lakh.

Step 1 — establish the pre-2001 FMV.

Registered valuer's report: FMV on 1 April 2001 = ₹9 lakh.
Sub-registrar's stamp-duty value on 1 April 2001 = ₹8 lakh.
Substituted cost = lower of the two = ₹8 lakh.

Step 2 — indexation to year of sale (FY 2025-26, CII 376).

Indexation Factor = 376 / 100 = 3.76
Indexed Cost      = 8.00 × 3.76 = 30.08 lakh

Step 3 — indexed LTCG and tax (20% + cess route).

Indexed LTCG = 160.00 − 30.08 − 3.00 = 126.92 lakh
Tax @ 20%    = 25.384 lakh
Plus 4% cess =  1.015 lakh
Total        ≈ 26.40 lakh

Step 4 — compare against 12.5% without indexation route.

Cost (father's actual)      = 0.40 lakh
Transfer expenses           = 3.00 lakh
LTCG                        = 160.00 − 0.40 − 3.00 = 156.60 lakh
Tax @ 12.5%                 = 19.575 lakh
Plus 4% cess                =  0.783 lakh
Total                       ≈ 20.36 lakh

On this specific example, the 12.5%-without-indexation route actually comes out lower because the father's original cost is negligible and the indexation benefit from an 8 lakh base is capped. The resident taxpayer should therefore file under Route B (12.5% without indexation) — even though this is exactly the fact pattern the pre-2001 FMV rules were designed to help.

If instead the valuer had produced a well-supported ₹50 lakh FMV with a matching stamp-duty value, the indexed route (₹50L × 3.76 = ₹188L of indexed cost) would have shown a negative gain and the indexation route would have been decisively better. The economics depend on how valuable the property already was on 1 April 2001.

What an NRI seller should note

On a current (post-23-July-2024) sale of Indian property, an NRI cannot use the indexation route at all. The pre-2001 FMV substitution is irrelevant to the NRI's own tax computation.
It may still be relevant if there is a resident co-owner (spouse, sibling) whose share is computed under the grandfathering option.
For inheritance by an NRI of property the deceased acquired before 2001, the current NRI seller still inherits the actual cost history; the FMV-2001 substitution would have helped only under the indexation route, which the NRI cannot use.

Summary

Base year for indexation is 1 April 2001 (CII 100).
For property acquired before 1 April 2001, substitute FMV as on 1 April 2001, capped at the stamp-duty value on that date.
Use a registered valuer and pull the contemporaneous stamp-duty/guideline value; both are needed.
The indexation route itself now only helps resident individuals and HUFs under the Finance (No. 2) Act 2024 grandfathering for pre-23-July-2024 land/building. Run both routes before filing.
NRIs computing LTCG on Indian property under the new regime do not need the pre-2001 FMV exercise for their own share.

For the current calculation framework and the step-by-step worked example, see how to calculate capital gains. For the full CII table, see cost inflation index chart.