Inherited 1980s Shares Sold in FY 2025-26? How to Report Grandfathered Capital Gains in ITR-2

Why an old share certificate can change your AY 2026-27 capital-gains calculation

When a taxpayer sells shares inherited from a parent or grandparent, the purchase price shown in an old certificate may be very small or may not be available at all. Using that figure without checking the grandfathering rules can materially overstate the capital gain. At the other extreme, treating the whole sale proceeds as tax-free because the shares were inherited is also a mistake. The Mint report on inherited 1980s shares highlights the importance of grandfathering and notes that indexation is not available. For a sale during FY 2025-26, the taxpayer needs to establish the acquisition history, the applicable deemed cost and the right return schedules before filing for AY 2026-27.

This situation commonly arises when an executor distributes old listed shares, a family dematerialises a paper certificate, or a broker statement shows a sale but the taxpayer cannot find the original purchase contract. The tax computation is not solved by entering the current broker-reported cost alone. Inherited assets require a paper trail linking the previous owner's acquisition to the taxpayer's sale.

Build the chain of ownership before calculating the gain

Collect the previous owner's purchase or allotment records, old certificates, probate or succession documents where applicable, transmission confirmations, demat statements and the current sale contract note. The legal date and cost relevant to the tax calculation may depend on the previous owner's acquisition and the rules governing inheritance. A demat credit date is useful evidence of transmission, but it does not automatically establish the date the family first acquired the shares.

For shares acquired before 1 February 2018, the grandfathering framework may permit a deemed cost based on the actual cost and the prescribed fair-market-value reference as at 31 January 2018, subject to the statutory cap linked to the sale consideration. The exact calculation depends on the nature of the security and applicable conditions. Do not use the 31 January 2018 value as an unrestricted cost uplift, and do not apply the formula without confirming that the asset and transaction qualify. Where the share underwent a split, bonus issue, merger or other corporate action, reconstruct the adjusted quantity and cost for each lot.

A worked example: why the old certificate is not enough

Suppose an individual inherits listed shares bought by a parent in the 1980s and sells them through a broker in FY 2025-26. The old purchase price may be only a few rupees per share. The taxpayer should not report that figure automatically, nor should the taxpayer assume the entire gain disappears because the acquisition preceded the inheritance. The preparer should identify the original acquisition, determine whether the grandfathering provision applies, establish the relevant fair-market-value evidence, check the statutory cap and adjust for corporate actions. The broker's sale contract note then supplies the sale value and transaction details for the computation.

This is a working example, not a substitute for a calculation against actual records. A quoted market price from a website is not necessarily the prescribed fair-market-value evidence. Keep the valuation data and the source used for it, together with the computation. If records are incomplete, seek a documented professional review before choosing a cost figure.

Indexation and the tax rate: avoid importing an old rule

The source specifically cautions that indexation is not available for the shares in the discussed context. A common error is to apply an inflation index to the grandfathered cost because the shares were held for decades. Do not combine a deemed cost calculation with an indexation benefit unless the law expressly permits it for that asset and transaction. For eligible listed equity, the tax rate and exemption framework also depends on the type of security, holding period, securities transaction tax conditions and the date of transfer. Transactions in FY 2025-26 must be tested under the rules applicable to that period; avoid carrying forward a rate or threshold from an older tax return.

Keep the calculation separated into short-term and long-term treatment where relevant. If the shares were not listed, were not equity shares covered by the relevant provisions, or the transaction did not satisfy required conditions, a different computation may apply. A share sold through an off-market transfer or received under a corporate arrangement deserves a closer review than a straightforward exchange sale.

Which return form applies after the sale?

A resident individual with salary, interest and capital gains from inherited shares, but no business or professional income, will generally need to consider ITR-2 rather than ITR-1. ITR-1 is not the safe default merely because the taxpayer is salaried: capital gains and other exclusions can make it unavailable. If the person has business or professional income, frequent trading treated as a business, or other circumstances outside ITR-2 eligibility, ITR-3 may be relevant. Confirm the final form against the notified AY 2026-27 instructions and the taxpayer's full income profile.

Report the transfer in the capital-gains schedule with the correct asset category, dates, sale consideration, allowable transfer expenses and cost calculation. Reconcile the broker's annual tax statement and contract notes with AIS and Form 26AS. If AIS shows sale proceeds but the taxpayer has netted brokerage or treated the transaction as an internal demat transfer, investigate the difference and preserve evidence. A statement mismatch is not proof that the tax computation is wrong, but an unexplained discrepancy can invite a query.

AY 2026-27 filing dates and consequences of waiting

For a non-audit ITR-2 case, 31 July 2026 is the filing last date without late fee unless the Income Tax Department officially extends it. Applicable non-audit ITR-3 and ITR-4 cases have a separate 31 August 2026 due date unless officially extended. These dates are for the AY 2026-27 return relating to FY 2025-26; check the Department's current announcements before filing because extensions can be notified. Do not assume that a capital-gains return automatically gets the later date just because shares were sold through a broker.

Missing the applicable due date can lead to late-filing consequences, interest where payable and restrictions on carrying forward certain losses. A belated return may be available within the statutory window, but it is not an ideal substitute for timely filing. If a return has already been filed with the wrong acquisition cost or omitted sale, review whether a revised return remains available under the rules and deadline in force. An updated return is a separate remedy with conditions and additional tax consequences; it is not a routine no-cost correction method.

Practical records that reduce notice risk

• Keep inheritance, transmission and previous-owner acquisition evidence together.
• Save the 31 January 2018 valuation support if the grandfathering provision is used.
• Reconcile demat quantities, bonus or split adjustments and the broker contract note.
• Compare capital-gains working with AIS, TIS, Form 26AS and the broker tax statement.
• Retain the computation showing why a particular cost and tax treatment were adopted.
• Use ITR-2 only after confirming there is no business income or other disqualifying circumstance.

FAQs on inherited shares and ITR filing

Can I use ITR-1 if I sold inherited mutual funds or shares during FY 2025-26?
Do not assume so. A capital-gains transaction can make ITR-1 unavailable. A resident individual without business income will generally examine ITR-2 eligibility and the applicable AY 2026-27 instructions.

Can I use the 1980s purchase price as my cost for listed shares?
Not automatically. Check whether the grandfathering rule applies to the asset and use the prescribed calculation and supporting valuation evidence where eligible.

Can I add indexation to the grandfathered value?
The cited guidance notes that indexation is not available in the discussed context. Confirm the treatment for the exact security and transfer rather than adding indexation simply because the holding period is long.

Does inheritance make the share sale tax-free?
No. Inheritance and a later sale are distinct events. The later transfer may create a capital gain, which must be computed and reported under the applicable rules.

What if AIS shows a sale that I cannot match to my records?
Obtain broker and depository statements, identify the transaction and reconcile the amount. Keep an explanation and supporting records instead of ignoring the entry or copying it without investigation.

Conclusion: document the cost before pressing submit

For inherited old shares, the difficult part is usually proving the ownership chain and cost, not entering a number into the return. Reconstruct the prior owner's acquisition, test grandfathering and corporate-action adjustments, avoid an unsupported indexation claim, and reconcile the sale with AIS and broker records. Select the ITR form based on all income sources and file by the applicable AY 2026-27 deadline, checking for official extensions.