When a company issues bonus shares, existing shareholders receive additional shares for free, based on their current holdings. This corporate action doesn’t change the overall value of your investment but increases the number of shares you own.
Understanding how your holdings change after such events is important for accurate portfolio tracking, performance evaluation, and tax calculations. The Bonus Share Adjustment Calculator helps you determine your new total number of shares after a bonus issue using the bonus ratio and your original holding.
Formula
Adjusted Shares = Original Shares × (1 + Bonus Ratio)
Where:
- Original Shares: Number of shares you held before the bonus issue.
- Bonus Ratio: The ratio of bonus shares issued per share held. For example:
- A 1:1 bonus = 1
- A 1:2 bonus = 0.5
- A 2:5 bonus = 0.4
This means for every 2 shares you hold, you receive 1 extra in a 1:2 bonus.
How to Use the Bonus Share Adjustment Calculator
- Enter Original Shares: Your current shareholding before the bonus.
- Enter Bonus Ratio: Convert the bonus issue format to a decimal (e.g., 1:2 becomes 0.5).
- Click “Calculate”: You’ll see your new total number of shares after adjustment.
This is useful for personal finance tracking, brokerage reports, or corporate planning.
Example
Suppose:
- Original Shares = 1,000
- Bonus Issue = 1:2 (which means bonusRatio = 0.5)
Then:
Adjusted Shares = 1,000 × (1 + 0.5) = 1,500
You now own 1,500 shares after the bonus issue.
FAQs
1. What is a bonus share?
A bonus share is a free additional share given to existing shareholders based on their current holdings.
2. How does a bonus issue affect shareholding?
It increases your number of shares but doesn’t change your total investment value.
3. What is the bonus ratio?
It’s the number of bonus shares given per existing share (e.g., 1:2 means 1 share for every 2 owned).
4. How do I enter a 1:1 bonus?
Input 1 as the bonus ratio.
5. Is there a change in share price after bonus?
Yes — the share price typically adjusts downward proportionally.
6. Does my investment value change?
No — your total investment value remains the same immediately after the bonus.
7. Are bonus shares taxable?
They may have tax implications when sold; consult local tax laws.
8. Can I sell bonus shares immediately?
Yes — once they’re credited to your demat or brokerage account.
9. How often do companies issue bonuses?
Depends on profitability and reserves — there’s no fixed schedule.
10. Do all shareholders get bonus shares?
Yes, if they hold shares on the record date set by the company.
11. What is a record date?
The cut-off date to determine who is eligible to receive bonus shares.
12. Is a bonus issue good for investors?
Generally seen as a positive signal of financial health and retained earnings.
13. Does EPS (Earnings per Share) change post bonus?
Yes — since total shares increase, EPS usually decreases.
14. Is NAV affected in mutual funds?
In equity mutual funds, NAV per unit may adjust but total value remains unchanged.
15. Can the bonus ratio be more than 1?
Yes — e.g., 2:1 means 2 bonus shares per 1 held (ratio = 2.0).
16. Are bonus shares issued in demat form?
Yes — credited directly into your demat account in most markets.
17. How do I calculate market cap after bonus?
Market cap usually stays the same, even though shares increase and price drops.
18. What if I own fractional shares?
Companies may issue fractional entitlements in cash or round them off based on policy.
19. What’s the difference between bonus and stock split?
Bonus gives free new shares; split divides existing shares into smaller units.
20. Can I use this calculator for multiple bonus events?
Yes — just apply each event successively using the updated share count.
Conclusion
Bonus share adjustments are common in equity markets and can have significant implications for your portfolio tracking and valuation. The Bonus Share Adjustment Calculator simplifies the task of understanding how your total shareholding changes after a bonus issue.
Whether you’re a retail investor, portfolio manager, or accountant, this tool ensures clarity and accuracy during corporate actions. Use it to make informed decisions and maintain a precise picture of your investments post-bonus.