Tax on Inherited Stocks and Mutual Funds: How the Cost Basis Is Determined

Inheriting shares or mutual fund units feels, in the moment, like a transfer of ownership. For tax purposes, Indian law treats it as something closer to nothing having happened at all. The cost basis used to calculate capital gains when those shares are eventually sold does not reset to their value on the day of inheritance.

It reaches back to whatever the original owner actually paid, sometimes decades earlier, long before the heir who eventually sells them was ever involved.

This cuts in two directions at once. It can mean an unusually large, hard to avoid capital gain if the original holding was bought cheaply many years ago and has since multiplied in value many times over.

It can also mean an inherited holding qualifies for long term capital gains treatment immediately, even if the heir has technically owned it for only a single day, because the original owner's holding period carries forward too. Both outcomes trace back to the same rule, and most of the confusion around inherited securities comes from not knowing which one applies until the actual numbers are worked through.

Under Section 49(1) of the Income Tax Act, when a capital asset, including shares, mutual fund units or other securities, comes into someone's hands through inheritance, a will, or succession, the cost of acquisition for calculating any future capital gain is deemed to be whatever the previous owner, the person who actually paid for the asset, originally paid for it.

Any documented cost of improvement the previous owner incurred is added to that figure. The fair market value of the shares on the date of death, or on the date the heir actually receives them, has no bearing on this calculation at all. Only the original purchase price matters.

This is a meaningfully different approach from the one used in the United States, where inherited assets generally receive what is called a stepped up basis, resetting the cost of acquisition to the asset's fair market value on the date of the original owner's death, which can eliminate decades of accumulated capital gains from taxation entirely if the heir sells soon after inheriting. India has no equivalent provision.

An Indian heir who sells inherited shares still owes capital gains tax calculated against the original owner's decades old purchase price, and the absence of a step up is one of the more consequential, and least understood, differences between the two systems for anyone with cross border family holdings or exposure to both tax regimes.

The same carryover principle that keeps the original cost in place also keeps the original holding period in place. When determining whether an inherited holding qualifies for long term or short term capital gains treatment, the clock does not restart on the date of inheritance.

It includes the entire period the previous owner held the asset before it passed to the heir. In practice, this means a holding a parent bought fifteen years ago and left to a child can be sold by that child the day after transmission is completed and still qualify for long term capital gains treatment, since the combined holding period, the parent's plus the heir's, comfortably clears the 12 month threshold for listed equity and equity oriented mutual funds.

Element	Rule for Inherited Securities
Cost of acquisition	The amount the original owner actually paid, plus any documented cost of improvement, regardless of current market value
Holding period	Includes the entire period the original owner held the asset, added to the heir's own holding period
Fair market value on the date of death	Not used in the capital gains calculation at all
Tax at the point of inheritance itself	None; transmission is not treated as a taxable transfer

For listed equity shares and equity oriented mutual fund units acquired before February 1, 2018, a separate grandfathering rule under Section 55(2)(ac) adds another layer. The cost of acquisition for these specific assets is the higher of the actual purchase price and a second figure, itself the lower of the asset's fair market value on January 31, 2018 and the eventual sale price.

This three way comparison exists to shield gains that had already accrued before long term capital gains tax on listed equity was reintroduced in 2018. For an inherited holding, this calculation still runs off the original owner's purchase date and price, not the date of inheritance, which means a family holding bought in the 1990s and inherited only last year still uses that original 1990s purchase price as one input into the January 2018 grandfathering comparison.

The process of moving shares or mutual fund units out of a deceased person's account and into an heir's own account is called transmission, a legally distinct process from a transfer, which describes a voluntary sale or gift between two living parties.

Transmission happens by operation of law rather than by choice, and critically, it is not treated as a taxable event at all. No capital gains tax arises simply because securities move from a deceased holder's account to a nominee's or legal heir's account. The tax question only arises later, when that heir actually sells the securities, at which point the Section 49(1) cost carryover rule described above applies.

How quickly transmission actually happens depends heavily on whether the deceased had registered a nominee. Where a valid nominee is on record, the process is comparatively fast, generally requiring only a notarised death certificate, identity proof and a transmission form submitted to the depository participant, with no succession certificate or probate required at all.

It is worth knowing that a nominee legally receives the securities as a custodian on behalf of the legal heirs, not automatically as the final owner, since Indian courts have held that nomination does not override the inheritance rights of legal heirs under personal succession law, though in practice the transmission itself proceeds smoothly once a nominee is in place.

Where no nominee was registered, the process becomes considerably more document intensive. A recent SEBI notification raised the threshold below which simplified documentation, an indemnity bond, an affidavit and a no objection certificate from other heirs, suffices for demat holdings, from Rs 1 lakh to Rs 5 lakh.

Above that threshold, a court issued succession certificate, a probate of a will, or a letter of administration becomes necessary, a process that can take months and involves genuine legal cost, particularly where a will does not exist and the estate must be settled as intestate succession under the Indian Succession Act.

SEBI has set processing timelines of seven days for demat securities and 21 days for physical securities once complete documentation is received, and a March 2026 consultation paper has proposed raising the simplified documentation threshold further, to Rs 30 lakh, alongside a straight through process for very small claims.

Scenario	Typical Documentation Required
Valid nominee registered	Notarised death certificate, identity proof, transmission form; no succession certificate or probate needed
No nominee, value below the simplified threshold	Indemnity bond, affidavit, and no objection certificate from other legal heirs
No nominee, value above the simplified threshold	Succession certificate, probate of a will, or a letter of administration from a competent court

Income generated by inherited securities after the original owner's death, dividends on shares, distributions from mutual funds, or interest on inherited bonds and fixed deposits, is taxable as income from other sources in the hands of whoever is entitled to it, typically the legal heir or nominee once transmission is complete, taxed at that person's own applicable slab rate. This is a separate question entirely from the capital gains treatment on an eventual sale, and it applies regardless of how long transmission itself takes to finalise.

The shares do not know their owner has died. The dividend they pay out next quarter is taxed as if nothing about the household had changed, only the name on the account.

The single most common practical difficulty with inherited securities is not a question of law at all, it is a question of records. Calculating a capital gain correctly requires knowing exactly what the original owner paid, and when, information that may exist only in old, easily lost paperwork: physical share certificates, decades old contract notes, or a demat account statement from a bank or broker that may no longer exist under the same name.

Corporate actions that happened during the original owner's holding period, bonus issues, stock splits, mergers, need to be tracked as well, since each adjusts the effective cost per share going forward. Families dealing with inherited holdings are often better served locating these records while the person who can explain them is still available, rather than trying to reconstruct decades of history after the fact.

A few practical habits follow from how this framework actually works:

• Keep, or ask an older family member to locate, the original purchase records for any shares or mutual fund units likely to be inherited, since these determine a capital gains bill that may not come due for years or decades.

• Register a nominee on every demat account and mutual fund folio. It does not change the eventual tax outcome, but it meaningfully simplifies and speeds up the transmission process for whoever inherits the account.

• Do not assume an inherited holding automatically qualifies for long term treatment without checking. It usually does, because the original owner's holding period carries forward, but this should be confirmed against the actual purchase date, not assumed.

• For holdings originally purchased before February 2018, work through the specific grandfathering comparison using the original owner's purchase price and date, not the date of inheritance, when the shares are eventually sold.

• Treat transmission and taxation as two separate questions entirely. Moving inherited securities into your own name triggers no tax by itself; the tax only arises later, when you actually sell.

The bigger the gain feels like it should be forgiven because you did not buy the shares yourself, the more precisely the tax law expects you to know exactly what somebody else paid for them, possibly decades ago.

Note on Current Thresholds

The tax rule described in this article, Section 49(1), is settled, long standing law. The procedural side, specifically the value thresholds for simplified transmission documentation, has moved recently: SEBI raised the threshold for demat holdings without a nominee to Rs 5 lakh, and a March 2026 consultation paper has proposed raising it further to Rs 30 lakh. Check current SEBI circulars and your depository participant for the exact figure in force when you need it.

This article is for educational purposes only and does not constitute tax or legal advice. Rules described here reflect general provisions of the Income Tax Act and SEBI regulations as publicly available at the time of writing, are subject to change, and depend on individual facts including documentation available, the presence of a will, and the specific securities involved. Readers should consult a qualified tax professional or legal expert before making decisions about inherited securities or estate planning.