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Bonus shares can change your share count without changing your tax cost in the same way everywhere. In the Indian guidance covered here, bonus shares allotted on or after 1 April 2001 generally have nil cost for capital-gains computation when sold. Under UK guidance, a same-class bonus issue adds no new allowable expenditure: the original holding’s total cost is pooled across the enlarged shareholding. These are different rules, not a universal formula. Check the country, tax year and exact type of distribution before calculating tax.
This guide compares the cited Indian Income Tax Department and HM Revenue & Customs guidance. It explains what happens to cost basis, when the tax calculation matters, and how to avoid confusing a free bonus issue with a paid rights issue or a stock dividend.
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A bonus issue gives existing shareholders additional shares without requiring payment for those shares. The number of shares rises, but the tax treatment of their cost depends on the jurisdiction. “Cost basis” here means the acquisition cost used in calculating a capital gain or loss when shares are disposed of; tax rules may use different terminology, such as “cost of acquisition” or “allowable expenditure.”
The key distinction in the official guidance reviewed is how the new shares relate to the original cost. India assigns a nil cost to qualifying post-1 April 2001 bonus shares when sold. The UK does not add a separate cost for a same-class bonus issue; instead, the original allowable cost remains attached to the enlarged holding. In the UK example below, that means a lower average cost per share, not a higher total cost.
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For a plain-language summary, see the [Income Tax Department’s capital-gains material] and HMRC’s [HS285 share-reorganisation guidance for 2026].
Do I pay capital gains tax when I receive bonus shares or when I sell them?
The guidance in this comparison focuses on the cost and capital-gains treatment when shares are sold; it does not establish one universal tax rule for the date shares are received. Do not treat the receipt of any free shares as automatically tax-free in every country or for every kind of distribution.
For India, the cited capital-gains table states the cost used when a bonus share is sold. A separate CBDT circular addresses section 194R withholding in a specific context—bonus shares issued by a company in which the public are substantially interested. That limited withholding statement is not a general conclusion about all tax consequences, all issuers or all share distributions. Read the circular in context rather than using it as proof that every bonus allotment is exempt from tax at receipt.
For the UK, HMRC treats a same-class bonus issue as a share reorganisation for capital-gains purposes: the new shares join the existing holding and no additional allowable expenditure is added for the bonus issue. A stock dividend is different and can have an income-tax consequence. The exact transaction and the taxpayer’s circumstances matter, so check the relevant tax guidance for the year and situation rather than assuming the label used by a company settles the tax result.
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How are bonus shares treated for capital gains tax in India?
Under the Indian Income Tax Department’s cited rule, a bonus share allotted on or after 1 April 2001 has nil cost of acquisition for capital-gains computation when it is sold. For a bonus share allotted before that date, the stated rule uses its fair market value on 1 April 2001. This is the cost rule described in that official material; it should not be carried over to another country.
The practical consequence is that the original shares and the bonus shares need separate acquisition records. The cited rule gives a separate cost treatment to the bonus shares; it does not say to redistribute the original shares’ cost over the enlarged share count. For a post-cutoff bonus share, the cost used under this rule is nil, rather than the market price on the allotment date or a fraction of the original shares’ cost.
That does not, by itself, calculate the final taxable gain. A gain computation also requires the relevant sale proceeds and the applicable rules for the taxpayer, asset and tax year. This article does not provide a full Indian tax-return calculation or address every rate, exemption, surcharge or reporting rule. Consult the current official material for the relevant year, including the [Income Tax Department’s share-sale guidance].
Holding period: The department’s share-sale guidance says that for shares allotted without payment on the basis of an existing holding, the holding period is reckoned from the bonus allotment date. Do not assume that the holding period for the bonus shares automatically starts on the date you bought the original shares. Record the allotment date and check the applicable classification and tax-year rules when working out the treatment of a sale.
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Withholding is not the same as the final tax result. CBDT Circular No. 18 of 2022, in its answer to Question 7, says that further cost of acquisition of bonus shares is nil for capital-gains computation when sold. Its section 194R discussion is limited to the specified context of issues by companies in which the public are substantially interested. It should not be recast as a blanket exemption for any distribution, issuer or jurisdiction. See the [full CBDT circular] for its scope.
How are bonus shares treated for capital gains tax in the UK?
For a same-class bonus issue, HMRC treats the new shares as part of the existing holding under the share-reorganisation rules. The bonus shares do not create additional allowable expenditure. The total cost of the enlarged holding therefore remains the same as the allowable cost of the original holding, before any later disposal allocation or other applicable share-identification rule.
That means the average cost per share falls when the share count increases, even though the pool’s total allowable cost does not. This is different from the Indian rule described above, which assigns nil cost to the relevant bonus shares rather than spreading the original cost across them.
Example: Suppose an investor owns 100 same-class shares with a total allowable cost of £500. The company makes a one-for-one bonus issue, so the investor now holds 200 shares. Under HMRC’s stated treatment, the total allowable cost remains £500. If the investor later sells 50 shares and no same-day or next-30-day purchase rule changes which shares are treated as sold, the simple proportional allocation is £500 × 50 ÷ 200 = £125 of allowable cost for those 50 shares. The example illustrates the pooled-cost arithmetic; it is not an individualized tax calculation.
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For a real disposal, do not assume the simple fraction settles the answer. HMRC’s share-identification rules can affect which shares are treated as sold, including rules involving acquisitions on the same day or in the following 30 days. Check the applicable rules and records before applying the pooled-cost fraction. HMRC’s [share reorganisation, takeover or merger guidance] and [HS285 for 2026] explain the relevant framework.
What is the difference between a bonus issue, a rights issue and a stock dividend?
These labels can describe different transactions, and the tax treatment should not be inferred from the word “shares” alone. Confirm what the company actually issued and whether you had to pay for it.
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1Clear out junk files and repair common Windows errors2Scan for outdated or missing drivers - takes under a minute3Repair Windows errors before they cause bigger problems- Free bonus issue: Additional shares are allotted to existing holders without payment. The India and UK rules above concern this kind of issue, subject to their stated conditions.
- Rights issue: Existing holders are offered an opportunity to subscribe for additional shares, usually by paying for them. Because the investor pays, this is not the same as a free bonus issue; do not use the nil-cost or no-additional-expenditure treatment without checking the rules for the rights transaction.
- Stock dividend: HMRC says a UK stock dividend is treated differently from a simple bonus issue: it is taxable as a dividend, and the amount treated as received in cash can count as allowable expenditure for capital-gains purposes. This distinction is specific to the UK guidance cited here.
Company notices, broker statements and tax documents may use terminology that is not enough to determine the tax category. If the shares were partly paid, issued through an employee plan, distributed in a different class, or involved a fractional entitlement, the rules in this comparison may not resolve the treatment.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.How should I work out the cost and keep records?
Start by identifying the jurisdiction and the transaction, then apply that country’s rule. A reliable calculation needs both the original acquisition information and the bonus allotment details; for a partial UK disposal, it also needs the share count and pooled cost.
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- Confirm the jurisdiction and tax year. Rules are country-specific and may change. The Indian and UK treatments in this article are not substitutes for the rules where you are resident or filing.
- Identify the distribution. Check whether it was a free bonus issue, a paid rights issue or a stock dividend. Note the share class and whether the issue was made on the basis of an existing holding.
- Record the original holding. Keep purchase or transfer records, the number and class of shares, and the acquisition cost used for tax purposes.
- Record the allotment separately. Save the company or broker notice showing the bonus allotment date, number of shares, share class and any relevant terms. For the Indian holding-period rule cited here, the allotment date matters.
- Apply the correct local cost treatment. For the Indian rule, check the 1 April 2001 cutoff and the stated fair-market-value rule for earlier allotments. For the UK same-class bonus issue, retain the existing pool cost and include the new shares in the enlarged holding.
- For a disposal, check identification and allocation rules. In the UK, a straightforward proportional allocation may be affected by same-day or next-30-day acquisitions. Do not use the example’s fraction without checking whether those rules apply.
- Reconcile records before filing. Compare your own acquisition and allotment records with broker or company statements. If the transaction is unusual or the tax result is material, seek advice for the relevant jurisdiction and tax year.
These records help prevent two common errors: treating the bonus allotment as though it were a purchase at its market value, and losing the original cost or allotment date needed to calculate a later disposal. They also make it easier to distinguish the capital-gains calculation from a separate withholding or income-tax question.
Which rule applies to my shares?
Use the comparison only if your transaction matches the relevant guidance. The source material covers India and the UK, and does not establish the rule for other countries, trusts, employee share arrangements, different share classes, fractional entitlements or unusual distributions.
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A free scan shows the junk files, broken settings and background clutter dragging Windows down - then fixes them in one click.Free scan · Windows 10 & 11| Question | India: cited guidance | UK: cited guidance |
|---|---|---|
| Cost of a free bonus share on a later sale | Nil for allotments on or after 1 April 2001; for earlier allotments, fair market value on 1 April 2001 under the stated rule. | No additional allowable expenditure for a same-class bonus issue. |
| What happens to original cost? | The cited table gives the bonus shares a separate nil cost; it does not say to spread original cost over the bonus shares. | Original pooled cost remains with the enlarged holding. |
| Holding-period point | For shares allotted without payment on the basis of an existing holding, reckoned from the bonus allotment date. | Same-class bonus shares join the existing holding; check current share-identification rules for a disposal. |
| Similar transaction to distinguish | The section 194R circular statement is limited to the specified context; it is not a universal tax conclusion. | A stock dividend is different: it is taxable as a dividend, and the amount treated as received in cash can count as allowable expenditure for CGT. |
Before using either column, confirm that the share distribution fits its description and that the cited material is current for the tax year in question. If it does not, stop and find the jurisdiction-specific rule rather than combining the two methods.
Frequently Asked Questions
Can I use the Indian or UK bonus-share rule for shares held in another country?
No. The cited sources support only the India and UK treatments described here; another country may use a different cost, income-tax or holding-period rule. Check the rules for the country in which you have a filing obligation.
What if my company issued a different class of bonus shares?
The UK treatment summarized here is for a same-class bonus issue. A different class, fractional entitlement or unusual company action may not fit that description, so verify the specific transaction instead of assuming the same pool treatment.
Does a nil cost mean the whole sale proceeds are automatically taxable?
Not by itself. Nil cost is one input to the capital-gains computation under the cited Indian rule; the final result still depends on the applicable sale, taxpayer and tax-year rules.
