Bonus Share Calculator: Adjusted Price & Balance (2026)

Calculate your bonus shares

The Bonus Share Calculator helps you estimate the impact of a bonus issue on your investment. Bonus shares are free shares issued by a company to its existing shareholders. This tool calculates your new share quantity and the adjusted buy price per share post-bonus.

Current Shares
Qty
Current Price

Bonus Ratio

New Shares : Existing Held

:

e.g., 1:1 means 1 bonus share for every 1 share held

Bonus Shares

0

Total Shares

0

New Price/Share

₹0

Total Value

₹0

Value remains same

The Bonus Share Calculator helps investors understand the impact of bonus issues on their stock holdings. When a company issues bonus shares, shareholders receive additional free shares in proportion to their existing holdings, rewarding them from the company's accumulated reserves.

How Does the Bonus Share Calculator Work?

Bonus shares are issued at a ratio like 1:1 (one free share for each share held) or 2:1 (two free shares for each share held). The calculator shows your new total shares and the adjusted price per share after the bonus issue.

Bonus Shares = (Existing Shares ÷ Existing Ratio) × New Ratio

Where:

  • Bonus Ratio = New Shares : Existing Shares (e.g., 1:2 means 1 bonus for every 2 held)
  • New Total Shares = Existing Shares + Bonus Shares
  • Adjusted Price = (Old Price × Existing Shares) ÷ New Total Shares
  • 1:1 Bonus: Receive 1 free share for every 1 share held (shares double)
  • 1:2 Bonus: Receive 1 free share for every 2 shares held (50% increase)
  • Record Date: You must hold shares on this date to receive bonus
  • Ex-Bonus Date: Stock trades without bonus entitlement

Example: 1:1 Bonus Share Calculation

Kavitha holds TCS shares and the company announces a 1:1 bonus.

Before Bonus Issue:
• Shares Held: 200 shares
• Price per Share: ₹3,600
• Total Value: ₹7,20,000

After 1:1 Bonus:
• Bonus Shares: 200 shares (free)
• Total Shares: 200 + 200 = 400 shares
• New Price: ₹3,600 ÷ 2 = ₹1,800 per share
• Total Value: ₹7,20,000 (unchanged immediately)

Kavitha's shares doubled from 200 to 400!

Bonus Shares vs Stock Split

Both increase shares but have different mechanics:

AspectBonus SharesStock Split
SourceCompany reserves/profitsRestructuring existing shares
Face ValueRemains sameGets divided
ReservesTransferred to share capitalNo change
SignalShows strong reservesShows growth confidence

Frequently Asked Questions

⚠️ Disclaimer

The figures provided by this calculator are estimates based on the inputs you provide and standard financial formulas. STOCKCALC.IN does not offer investment advice. Please consult a qualified financial advisor before making any investment decisions.

MH

Verified Contributor

Bonus Share Calculator: Adjusted Price & Balance (2026) analyzed by Mahavir Hirani

I verified this calculation against the April 2026 Fiscal Cycle. If you have questions about the logic, reach out via the Author Page.

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