Scripwise
Investing Basics

1:1 Bonus Issue: What Happens to Holding and Cost

Ram Das · Content Strategist
Published · 2 min read

In short

  • The share count of a holder doubles after allotment under a 1:1 bonus, and the new shares reach the demat account directly.
  • Total money paid stays the same after the bonus, while the average cost per share is divided by two.
  • Section 63 of the Companies Act, 2013 forms the legal base for a bonus issue.
  • Companies such as eClerx and Aastha Spintex followed a short sequence from record date to allotment and then trading, usually within three or four days.
Jump to a section (2)

eClerx fixed 13 March 2026 as the record date for its 1:1 bonus, with deemed allotment on 16 March and trading expected from 17 March, so the holders saw their share count double within a few days. Their average cost per share halved at the same time.

Aastha Spintex had a similar schedule, with the record date on 28 September 2026, allotment on 29 September and trading from 30 September.

Under the 1:1 bonus of Anand Rathi Wealth, each holder receives one bonus share for every fully paid share held on the record date, which was fixed as 3 June 2026. The holding of every investor on the register on that date therefore doubles.

What changes in the holding and the average cost

Take an investor who had bought 100 shares at Rs 200 each, so the total cost was Rs 20,000. After a 1:1 bonus issue, the same investor will hold 200 shares.

  • Before the issue: 100 shares, average cost Rs 200, total cost Rs 20,000
  • After the issue: 200 shares, average cost Rs 100, total cost Rs 20,000

The amount paid by the investor has not changed, and no new money has been added to account. Only the number of shares has increased, so the cost per share has been divided by two.

The rules behind the issue

The legal base for a bonus issue is Section 63 of the Companies Act, 2013, together with Rule 14 of the Share Capital and Debenture Rules. For listed companies, Regulations 293 to 295 of the ICDR Regulations, 2018 also apply.

For a listed company, the bonus shares are allotted only in demat form, so the additional shares appear directly in the investor's . The company has to implement the issue within 15 days of the board approval, or within 2 months of the shareholder approval where a vote is needed. Bonus shares cannot be issued in place of a .

1:1 bonus issuebonus sharesbonus issue cost priceaverage cost after bonusrecord date bonusbonus share allotmentdemat bonus sharesbonus issue price adjustment

Frequently asked questions

What happens to the average cost price after a 1:1 bonus issue?

The average cost per share gets divided by two, since same total amount is now spread over double the shares.

Do bonus shares come into the demat account automatically?

For a listed company, bonus shares are allotted only in demat form, so they appear directly in the holder's account after allotment.

Which law governs a bonus issue in India?

Section 63 of the Companies Act, 2013 and Rule 14 of the Share Capital and Debenture Rules apply. Listed companies also follow the SEBI ICDR Regulations, 2018.

Sources & credits

Facts and figures in this article draw on these sources. All writing is our own.

Share this article

XLinkedInFacebookWhatsApp

About the author

Ram Das

Ram Das

Content Strategist Noida, India

A writer with a keen interest in the economy, financial markets and personal finance, bringing a grassroots perspective to stories that affect everyday people.

  • Economy
  • Markets
  • Personal Finance
  • Agriculture
  • Government Policies
  • Tax

More articles by Ram →

Screen stocks yourself

Run quality filters on 5,000+ NSE & BSE companies with Scripwise, free.

Keep reading