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Chapter IV - Computation of Total Income

Section 90

Section 90: meaning of cost of improvement and cost of acquisition

Section 90 is a definitions section that fills in two terms used repeatedly when computing capital gains under Sections 72 and 73: "cost of improvement" and "cost of acquisition." It sets special rules for goodwill and other intangible assets, assets acquired before 1 April 2001, bonus and rights shares, and the "grandfathering" cost for listed equity shares and units acquired before 1 February 2018.

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This article is for general information. Refer to the Income-tax Act, 2025 as amended by the Finance Act, 2026 and the Taxation and Other Laws (Amendment) Act, 2026 for the official provisions. If you need professional advice for your situation, contact Bizeneed.

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Statutory text

Bare law

(1) For the purposes of sections 72 and 73, “cost of improvement”,— (a) in relation to a capital asset being goodwill or any intangible asset of a business, or a right to manufacture, produce or process any article or thing, or right to carry on any business or profession, or any other right, shall be taken to be nil; and (b) in relation to any other capital asset,— (i) if the capital asset became the property of the previous owner or the assessee before the 1st April, 2001, means all expenditure of a capital nature incurred on or after the said date in making any additions or alterations to the capital asset by the previous owner or the assessee; and (ii) in any other case, means all expenditure of a capital nature incurred in making any additions or alterations to the capital asset by the assessee after it became his property, and, where the capital asset became the property of the assessee by any of the modes specified in section 73 (Table: Sl. No. 1), by the previous owner.

(2) For the purposes of sub-section (1)(b), the cost of improvement does not include any expenditure which is deductible in computing the income chargeable under the head “Income from house property”, “Profits and gains of business or profession” or “Income from other sources”.

(3) For the purposes of sections 72 and 73, “cost of acquisition” of a capital asset (being goodwill of a business or profession, or a trade mark or brand name associated with a business or profession, or any other intangible asset, or a right to manufacture, produce or process any article or thing, or a right to carry on any business or profession, or tenancy rights, or stage carriage permits, or loom hours, or any other right) means— (a) the purchase price, if acquisition of such asset by the assessee is by purchase from the previous owner; and (b) the purchase price for the previous owner, in the case covered in section 73 (Table: Sl. No. 1), where such asset was acquired by purchase by the previous owner as defined in sub-section (2) of the said section; and (c) nil, in any other case.

(4) For the purposes of sub-section (3)(a) or (b), if— (a) the capital asset is goodwill of a business or profession; and (b) the assessee has obtained a deduction on account of depreciation under section 32(1) of the Income-tax Act, 1961 in a tax year preceding the tax year commencing on the 1st April, 2020, then the total amount of depreciation obtained before the tax year commencing on the 1st April, 2020 shall be reduced from the amount of purchase price.

(5) For the purposes of sections 72 and 73, and subject to the provisions of sub-sections (9)(a) and (b), “cost of acquisition” shall be as per sub-section (6), in a case where, by virtue of holding a capital asset, being a share or any other security, within the meaning of section 2(h) of the Securities Contracts (Regulation) Act, 1956 (herein referred to as the financial asset), the assessee— (a) becomes entitled to subscribe to any additional financial asset; or (b) is allotted any additional financial asset without any payment.

(6) In a case referred to in sub-section (5), “cost of acquisition”, in relation to–– (a) the original financial asset, on the basis of which the assessee becomes entitled to any additional financial asset, means the amount actually paid for acquiring the original financial asset; (b) any right to renounce the said entitlement to subscribe to the financial asset, when such right is renounced by the assessee in favour of any person, shall be taken to be nil in the case of such assessee; (c) the financial asset, to which the assessee has subscribed on the basis of the said entitlement, means the amount actually paid by him for acquiring such asset; (d) the financial asset allotted to the assessee without any payment and on the basis of holding of any other financial asset, shall be taken to be nil; and (e) any financial asset purchased by any person in whose favour the right to subscribe to such asset has been renounced, means the total amount of the purchase price paid by him to the person renouncing such right and the amount paid by him to the company or institution, for acquiring such financial asset.

(7) For the purposes of sections 72 and 73, “cost of acquisition”, subject to sub-sections (9)(a) and (b), in relation to a long-term capital asset, being an equity share in a company or a unit of an equity oriented fund or a unit of a business trust referred to in section 198, acquired before the 1st February, 2018, shall be higher of— (a) the cost of acquisition of such asset; and (b) lower of— (i) the fair market value of such asset; and (ii) the full value of consideration received or accruing as a result of the transfer of the capital asset.

(8) For the purposes of sub-section (7),— (a) “Cost Inflation Index”, shall have the meaning assigned to it in section 72(8)(a); (b) “fair market value” means,— (i) in a case where the capital asset is listed on any recognised stock exchange as on the 31st January, 2018, the highest price of the capital asset quoted on such exchange on that date; (ii) in a case where there is no trading in such asset on such exchange on the 31st January, 2018, as mentioned in sub-clause (i) the highest price of such asset on such exchange on a date immediately preceding the 31st January, 2018 when such asset was traded on such exchange shall be the fair market value; (iii) if the capital asset is a unit which is not listed on a recognised stock exchange as on the 31st January, 2018, the net asset value of such unit as on that date; (iv) if the capital asset is an equity share in a company which is— (A) not listed on a recognised stock exchange as on the 31st January, 2018 but listed on such exchange on the date of transfer; (B) not listed on a recognised stock exchange as on the 31st January, 2018, or which became the property of the assessee in consideration of share which is not listed on such exchange as on the 31st January, 2018 by way of transaction not regarded as transfer mentioned in section 70, but listed on such exchange subsequent to the date of transfer (where such transfer is in respect of sale of unlisted equity shares under an offer for sale to the public included in an initial public offer); (C) listed on a recognised stock exchange on the date of transfer and which became the property of the assessee in consideration of share which is not listed on such exchange as on the 31st January, 2018 by way of transaction not regarded as transfer mentioned in section 70, an amount which bears to the cost of acquisition the same proportion as Cost Inflation Index for the tax year 2017-18 bears to the Cost Inflation Index for the first year in which the asset was held by the assessee or for the year beginning on the 1st April, 2001, whichever is later.

(9) For the purposes of sections 72 and 73, cost of acquisition in relation to any other capital asset,— (a) if the capital asset became the property of the assessee before the 1st April, 2001, subject to sub-section (10), shall be the cost of acquisition of the asset to the assessee or its fair market value on the 1st April, 2001, at the option of the assessee; (b) if the capital asset became the property of the assessee by any of the modes specified in section 73 (Table: Sl. No. 1), and the capital asset became the property of the previous owner before the 1st April, 2001, subject to sub-section (10), shall be the cost of the capital asset to the previous owner or its fair market value on the 1st April, 2001, at the option of the assessee; (c) if the capital asset became the property of the assessee on the distribution of the capital assets of a company on its liquidation and the assessee has been assessed to income-tax under the head “Capital gains” in respect of that asset under section 68, means the fair market value of the asset on the date of distribution; (d) if the capital asset, being a share or a stock of a company, became the property of the assessee on— (i) the consolidation and division of all or any of the share capital of the company into shares of larger amount than its existing shares; or (ii) the conversion of any shares of the company into stock; or (iii) the re-conversion of any stock of the company into shares; or (iv) the sub-division of any of the shares of the company into shares of smaller amount; or (v) the conversion of one kind of shares of the company into another kind, means the cost of acquisition of the asset calculated with reference to the cost of acquisition of the shares or stock from which such asset is derived.

(10) In case of a capital asset referred to in sub-section (9)(a) and (b), being land or building, or both, the fair market value of such asset on the 1st April, 2001 for the said sub-section 9(a) and (b) shall not exceed the stamp duty value, wherever available, of such asset as on the 1st April, 2001.

(11) If the cost for which the previous owner acquired the property cannot be ascertained, the cost of acquisition to the previous owner shall be the fair market value on the date on which the capital asset became the property of the previous owner.

(12) For the purposes of sections 72 and 73, cost of acquisition in relation to a capital asset— (a) being equity share or shares allotted to a shareholder of a recognised stock exchange in India under a scheme for demutualisation or corporatisation approved by the Securities and Exchange Board of India established under section 3 of the Securities and Exchange Board of India Act, 1992, shall be the cost of acquisition of his original membership of the exchange: (b) bring trading or clearing rights of the recognised stock exchange acquired by a shareholder who has been allotted equity share or shares under such scheme of demutualisation or corporatisation, shall be deemed to be nil.

Introduction

Section 90 supplies capital-gains cost rules for varied assets and acquisition histories: improvements, intangible rights, rights and bonus issues, older assets and other special situations. The applicable subsection must be identified before calculating a gain.

Key takeaways

1

Capital-gain cost rules

This section determines acquisition cost and improvement cost for capital-gains computation, including special rules for assets acquired by gift, inheritance or other specified modes.

2

Asset history matters

The acquisition route, prior owner and asset type can change the amount used as cost, so sale proceeds alone do not establish the taxable gain.

Cost of improvement

For goodwill, any intangible asset of a business, a right to manufacture/produce/process any article or thing, a right to carry on any business or profession, or any other similar right, the cost of improvement is taken as nil.

For any other capital asset, cost of improvement means capital expenditure on additions or alterations made on or after 1 April 2001 (where the asset became the property of the previous owner or the assessee before that date), or all capital expenditure on additions or alterations made after the asset became the assessee's property (or the previous owner's property, in cases of inherited/gifted assets) in any other case.

Cost of improvement does not include any expenditure that is already deductible while computing income under the heads "Income from house property", "Profits and gains of business or profession", or "Income from other sources" - to avoid double benefit.

Cost of acquisition for intangible rights

For goodwill of a business or profession, a trade mark or brand name associated with a business or profession, or other intangible assets/rights (right to manufacture, carry on business, tenancy rights, stage carriage permits, loom hours, etc.), the cost of acquisition is the purchase price if the assessee bought the asset from a previous owner, the previous owner's purchase price in certain inherited/gifted-asset cases, and nil in any other case.

If the asset is goodwill of a business or profession and the assessee had claimed depreciation on it under the old Income-tax Act, 1961 for a year before the tax year commencing 1 April 2020, the total depreciation claimed before that date is deducted from the purchase price.

Bonus and rights shares/securities

Where holding a financial asset (a share or security) entitles the assessee to subscribe to an additional financial asset, or leads to an allotment of an additional financial asset without payment, special cost rules apply:

AssetCost of acquisition
The original financial asset that gives the entitlementThe amount actually paid to acquire the original asset
The right to renounce the entitlement, if renounced in favour of someone elseNil
The new financial asset subscribed to on the basis of the entitlementThe amount actually paid to acquire it
The new financial asset allotted without any payment (bonus)Nil
A financial asset bought by someone in whose favour the entitlement was renouncedThe price paid to the person renouncing the right, plus the amount paid to the company/institution to acquire the asset

Grandfathering: equity shares and units acquired before 1 February 2018

For a long-term capital asset that is an equity share, a unit of an equity-oriented fund, or a unit of a specified business trust, acquired before 1 February 2018, the cost of acquisition is the higher of: (a) the actual cost of acquisition, and (b) the lower of the asset's fair market value (as specifically defined for this purpose) and the full value of consideration received on transfer.

"Fair market value" for this grandfathering rule generally means the highest quoted price on a recognised stock exchange as on 31 January 2018 (or the nearest earlier trading date), the net asset value as on that date for an unlisted unit, or for shares that were unlisted on 31 January 2018 but later got listed, an amount computed with reference to the Cost Inflation Index for 2017-18 relative to the year the asset was first held (or 1 April 2001, whichever is later).

Assets acquired before 1 April 2001

For any other capital asset that became the assessee's property before 1 April 2001, the cost of acquisition (at the assessee's option) is either the actual cost, or the asset's fair market value as on 1 April 2001. The same option applies to assets inherited or gifted from a previous owner who acquired them before that date.

For land or building acquired before 1 April 2001, the fair market value as on 1 April 2001 used for this purpose cannot exceed the stamp duty value of the asset as on that date, wherever available.

If the cost to the previous owner cannot be ascertained, the cost of acquisition to the previous owner is taken as the fair market value on the date the asset became the previous owner's property.

Other special situations

Where an asset became the assessee's property on distribution of a company's assets on liquidation (and the assessee was already assessed to capital gains tax on that distribution), the cost of acquisition is the asset's fair market value on the date of distribution.

Where shares or stock became the assessee's property through consolidation, sub-division, conversion of shares into stock (or vice versa), or conversion of one kind of share into another, the cost of acquisition is computed with reference to the cost of the original shares/stock from which the new asset is derived.

For equity shares allotted to a stock exchange member under a Securities and Exchange Board of India-approved demutualisation or corporatisation scheme, the cost of acquisition is the cost of the member's original exchange membership; trading or clearing rights acquired under such a scheme are treated as having nil cost.

Step-by-step flow for applying Section 90

  1. 1

    Is the asset goodwill, a trade mark or brand name, a right to manufacture or carry on business, tenancy right, stage carriage permit, loom hours or any other right?

    • Yes: Cost of acquisition is the purchase price paid by the assessee (or by the previous owner in Section 73 cases), otherwise nil (Section 90(3)). Purchased goodwill is reduced by depreciation obtained before the tax year starting 1 April 2020 (Section 90(4)). Cost of improvement is nil (Section 90(1)(a)).
    • No: Go to the next step.
  2. 2

    Is it a share or security linked to a rights entitlement or a bonus allotment?

    Under Section 90(6): original asset at amount actually paid; renounced right nil; rights shares at amount paid; bonus (allotted without payment) nil; renouncee's cost is the price paid to the renouncer plus the amount paid to the company.

  3. 3

    Is it a long-term equity share, equity-oriented fund unit or business trust unit acquired before 1 February 2018?

    • Yes: Cost is the higher of actual cost and the lower of fair market value (as defined in Section 90(8), generally the 31 January 2018 price) and the full value of consideration (Section 90(7)).
    • No: Go to the next step.
  4. 4

    Did the asset become the property of the assessee (or previous owner) before 1 April 2001?

    • Yes: Option to take actual cost or fair market value on 1 April 2001; for land or building, that value cannot exceed the stamp duty value on that date where available (Section 90(9), (10)).
    • No: Use the cost of acquisition; special rules apply for liquidation distributions, share consolidation or sub-division, demutualisation, and a previous owner's cost that cannot be ascertained (Section 90(9), (11), (12)).
  5. 5

    Add cost of improvement

    Capital expenditure on additions or alterations (from 1 April 2001 for older assets), excluding anything deductible under house property, business or other-sources computation (Section 90(1)(b), (2)).

Practical checklist

Do

  • Identify the exact asset type, acquisition date and mode before selecting a cost rule.
  • Keep original purchase, improvement, corporate-action and valuation records relevant to that rule.

Avoid

  • Do not use a single default cost figure for every bonus share, right or intangible asset.
  • Do not include expenditure already deductible under another income head as cost of improvement.

Illustrative example

Worked example: grandfathered listed shares and bonus shares

Hypothetical facts (illustration only, not a real taxpayer): Mr. Das bought 1,000 listed equity shares for ₹1,00,000 in 2016 and held them as long-term capital assets. Their highest quoted price on 31 January 2018 was ₹250 a share. In 2019 he received 1,000 bonus shares without payment. He sells the 1,000 original shares for ₹2,00,000 and the 1,000 bonus shares for ₹2,00,000.

  1. Fair market value

    Under Section 90(8)(b)(i), FMV = 1,000 × ₹250 = ₹2,50,000.

  2. Lower of FMV and sale value

    Lower of ₹2,50,000 and ₹2,00,000 = ₹2,00,000.

  3. Higher of actual cost and that figure

    Higher of ₹1,00,000 and ₹2,00,000 = ₹2,00,000, so the cost of the original shares is ₹2,00,000 under Section 90(7).

  4. Bonus shares

    Shares allotted without payment take a nil cost under Section 90(6)(d), so their cost is ₹0.

Outcome

  • Gain on the original shares = ₹2,00,000 - ₹2,00,000 = nil.
  • Gain on the bonus shares = ₹2,00,000 - ₹0 = ₹2,00,000 (the bonus shares were acquired after 1 February 2018, so Section 90(7) does not apply to them).
  • Section 90 fixes cost only; the tax treatment of the gain comes from the other capital gains provisions.

Glossary

Cost of improvement
Eligible capital spending on additions or alterations, subject to the section's asset and date rules.
Rights issue
An offer to subscribe to additional securities arising from an existing holding.

Frequently asked questions

What is the cost of improvement for goodwill or similar intangible rights?

Nil - Section 90(1)(a) specifically sets the cost of improvement for goodwill, other intangible business assets, and rights to manufacture or carry on business/profession to nil.

What is the cost of acquisition for bonus shares?

Nil - a financial asset allotted without any payment, on the basis of holding another financial asset, has its cost of acquisition treated as nil under Section 90(6)(d).

How is cost of acquisition determined for shares bought before 1 February 2018?

It is the higher of the actual cost of acquisition, and the lower of a specifically defined fair market value (broadly, the market price as on 31 January 2018) and the actual sale consideration - this grandfathering rule applies to equity shares, equity-oriented fund units, and specified business trust units.

What if I inherited a property whose original cost I cannot determine?

The cost of acquisition to the previous owner is taken as the fair market value on the date the asset became the previous owner's property.

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Last updated 10 October 2026