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Key Takeaways
- Capitalization of Surplus Reserves: Bonus shares are additional free shares issued to existing shareholders in proportion to their current holdings, financed entirely through the capitalization of the company's retained earnings and free reserves.
- Section 55(2)(aa) Deemed Zero Cost Basis: Under Section 55(2)(aa) of the Income Tax Act, the statutory cost of acquisition for bonus shares allotted after April 1, 2001 is legally deemed to be ₹0 (NIL).
- Section 94(8) Anti-Bonus Stripping Defense: Tax laws disallow setting off short-term capital losses generated by purchasing shares immediately prior to a bonus record date and liquidating them post-bonus; the loss is capitalized into the cost basis of the bonus shares.
When a profitable corporation accumulates substantial cash reserves on its balance sheet, the board of directors can reward shareholders without depleting cash through a Bonus Issue. By converting retained earnings into permanent equity share capital, the company issues additional shares to shareholders at zero cost.
However, retail investors often mistakenly view bonus shares as "free money." In economic reality, the total equity value of the company remains unchanged, causing the market price per share to adjust downward in exact mathematical proportion on the ex-bonus date.
The Bonus Shares Calculator computes your expanded share quantity, theoretical ex-bonus price, and statutory tax obligations.
Formula and Mechanics of Bonus Share Issuance
A bonus issue is defined by a corporate ratio: Y bonus shares for every X shares held (e.g., a 1:1, 2:1, or 1:2 bonus).
Bonus Share Expansion Equations
Illustrating the Ex-Bonus Mathematical Parity:
Suppose an investor owns 100 shares of a company trading at ₹1,200 (Total Value: ₹1,20,000). The company announces a 1:1 bonus issue (1 bonus share for every 1 share held):
- Post-Bonus Shares: 100 * (1 + 1/1) = 200 Shares
- Theoretical Ex-Bonus Price: ₹1,200 / (1 + 1/1) = ₹600.00
- Post-Bonus Portfolio Value: 200 Shares * ₹600 = ₹1,20,000
Total portfolio net worth remains completely identical on the ex-bonus date. The investor now owns twice as many shares, with each share worth exactly half the prior market price.
Bonus Issue vs Stock Split: Structural Comparison
Although both corporate actions expand total share count and lower the trading price, their regulatory mechanisms differ:
Face Value
Balance Sheet Reserves
Statutory Cost Basis
Acquisition Date
Corporate Prerequisites
| Features & Metrics | Bonus IssueCapitalization Action | Stock SplitSub-Division Action |
|---|---|---|
| Face Value | Remains completely unchanged (e.g., remains ₹10 per share) | Reduced proportionally (e.g., ₹10 drops to ₹2 in a 1:5 split) |
| Balance Sheet Reserves | Free reserves / securities premium transferred to Share Capital | Free reserves remain completely untouched |
| Statutory Cost Basis | Bonus shares have a deemed cost of ₹0 under Section 55(2)(aa) | Original purchase cost is divided equally across all split shares |
| Acquisition Date | Date of bonus allotment (fresh holding period starts) | Inherits the historical date of the original parent shares |
| Corporate Prerequisites | Must have adequate statutory free reserves to capitalize | No financial reserves required; requires MoA amendment |
Step-by-Step Schedule Across Standard Bonus Ratios
The table below illustrates how common bonus ratios adjust share quantities and prices for an investor holding 100 shares at ₹1,500 per share (₹1,50,000 total holding value):
Theoretical Ex-Bonus Pricing and Share Schedule
Worked mathematical cases for 100 Shares @ ₹1,500 (₹1,50,000 Base Portfolio)
| Bonus Ratio Announced | Bonus Shares Received | Total Post-Bonus Shares | Expansion Factor | Theoretical Ex-Bonus Price (₹) | Total Holding Value (₹) |
|---|---|---|---|---|---|
| 1 : 1 Bonus | 100 Shares | 200 Shares | 2.0x | ₹750.00 | ₹1,50,000 (Parity) |
| 2 : 1 Bonus | 200 Shares | 300 Shares | 3.0x | ₹500.00 | ₹1,50,000 (Parity) |
| 3 : 1 Bonus | 300 Shares | 400 Shares | 4.0x | ₹375.00 | ₹1,50,000 (Parity) |
| 1 : 2 Bonus | 50 Shares | 150 Shares | 1.5x | ₹1,000.00 | ₹1,50,000 (Parity) |
| 1 : 4 Bonus | 25 Shares | 125 Shares | 1.25x | ₹1,200.00 | ₹1,50,000 (Parity) |
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Statutory Taxation Rules in India (Income Tax Act)
Understanding the taxation of bonus shares is critical to avoiding unexpected tax bills upon liquidation:
1. Section 55(2)(aa) Zero Cost Rule
Under Section 55(2)(aa) of the Income Tax Act, the cost of acquisition for any bonus shares allotted on or after April 1, 2001 is deemed to be ₹0 (NIL):
- When you sell bonus shares, the entire redemption consideration is treated as a taxable capital gain.
- The original parent shares retain their full historical acquisition cost.
2. Date of Allotment Determines Holding Period
Unlike a stock split where the acquisition date is backdated, the holding period for bonus shares begins on the date of official allotment by the company registrar:
- If you sell bonus shares within 12 months of allotment, gains are classified as Short-Term Capital Gains (STCG - Section 111A) taxed at 20%.
- If held for more than 12 months from allotment, gains qualify as Long-Term Capital Gains (LTCG - Section 112A) taxed at 12.5% over the ₹1,25,000 statutory exemption threshold.
3. Section 94(8) Anti-Bonus Stripping Provisions
Historically, high-income investors engaged in "bonus stripping": purchasing shares right before the bonus record date, receiving free bonus shares, and selling the original shares at a steep artificial loss post-split to offset other capital gains.
To eliminate this tax loophole, Parliament enacted Section 94(8):
- If an investor buys shares within 3 months prior to the record date,
- Receives bonus shares, and
- Sells all or any of the original shares at a loss within 9 months after the record date, The capital loss is statutorily disallowed. The disallowed loss is instead added to the cost basis of the retained bonus shares.
Worked Rupee Tax Proof: Selling Parent vs Bonus Shares
Consider an investor who bought 100 shares at ₹1,000 (Total Outlay: ₹1,00,000) 2 years ago, receives a 1:1 bonus (now holding 100 original + 100 bonus shares), and sells 100 shares at ₹650 six months after the bonus allotment:
Capital Gains Tax Divergence: Selling Original vs Bonus Shares
Tax comparison when liquidating 100 shares at ₹650 post-bonus
| Tax Parameter | Scenario A: Selling Original Shares (FIFO) | Scenario B: Selling Bonus Shares (FIFO) |
|---|---|---|
| Cost of Acquisition | ₹1,000 per share (Historical Purchase Cost) | ₹0 per share (Deemed NIL under Sec 55(2)(aa)) |
| Sale Price Realized | ₹650 per share | ₹650 per share |
| Net Capital Gain / Loss | Loss of ₹350 per share (-₹35,000 LTCL) | Gain of ₹650 per share (+₹65,000 STCG) |
| Applicable Tax Treatment | Long-Term Capital Loss (Carry forward for 8 years) | Short-Term Capital Gains (Taxed at 20% + Cess = ₹13,520) |
| FIFO Allocation Rule | Broker applies FIFO: Original shares sold first | Can only sell bonus shares after original shares are fully sold |
Because Indian depository systems operate on First-In, First-Out (FIFO) accounting, your broker will automatically liquidate your original high-cost shares first, realizing a capital loss rather than an immediate short-term tax liability.
Are bonus shares taxable upon receipt?
No. Receiving bonus shares in your Demat account is completely tax-free. Capital gains tax is triggered only when you subsequently sell the shares on the stock exchange.
Why does a company issue bonus shares instead of cash dividends?
A cash dividend depletes the company's liquid cash balances. A bonus issue rewards shareholders and increases trading liquidity while retaining operating cash within the business to fund future capital expenditures and debt reduction.
How long does it take for bonus shares to show in my Demat account?
Bonus shares are typically credited by the corporate registrar within 10 to 15 business days following the corporate record date. Until credited, your portfolio will temporarily display an unadjusted ex-bonus price.
Do bonus shares qualify for dividends?
Yes. Once bonus shares are officially allotted and credited to your Demat account, they rank alongside existing shares for all future dividend distributions and corporate voting rights.
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