At first glance, a stock split and a bonus issue look identical: you end up with more shares at a lower price, and your total investment value doesn't change. But the mechanism is different, the accounting is different, and the signals they send are different. Understanding the distinction helps you read corporate actions correctly.
Quick Comparison
| Stock Split | Bonus Issue | |
|---|---|---|
| What happens | Each share is subdivided | New shares issued free from reserves |
| Face value | Reduces proportionally | Stays unchanged |
| Reserves used | No — only face value changes | Yes — capitalises free reserves |
| New shares issued | No — existing shares subdivided | Yes — fresh shares created |
| Shareholder eligibility | Hold on record date | Hold on record date |
| Total investment value | Unchanged | Unchanged |
| Ownership percentage | Unchanged | Unchanged |
| Tax on receipt | None | None (cost of bonus shares = ₹0) |
Stock Split — How It Works
In a stock split, the company reduces the face value of each share. No new shares are created from the company's balance sheet — the existing shares are simply broken into smaller units.
Example from NSE: AGI Infra Ltd split from ₹10 face value to ₹5 (record date: February 7, 2025). One share became two shares. Face value halved. Price halved. No change in market cap.
Rama Phosphates Ltd did the same split (₹10 → ₹5) on the same date.
The accounting entry: only the face value per share changes. Nothing moves on the reserves or retained earnings side of the balance sheet.
Bonus Issue — How It Works
In a bonus issue (also called a scrip dividend or capitalisation issue), the company issues new shares to existing shareholders by converting accumulated reserves into paid-up capital.
Example from NSE: Sangam Finserv Ltd issued a 4:1 bonus (record date: February 7, 2025). For every 1 share held, shareholders received 4 additional shares — turning 1 share into 5. Face value stayed the same (e.g., ₹10 per share). The company moved retained earnings from the reserves account to the paid-up capital account on its balance sheet.
The accounting entry:
Debit: Free Reserves / Retained Earnings
Credit: Paid-up Share Capital
This is why a bonus issue requires the company to have sufficient free reserves — you can't issue bonus shares if you have none to capitalise.
The Key Structural Differences
1. Face Value
- Split: Face value reduces (₹10 → ₹5 in a 1:2 split)
- Bonus: Face value stays the same (₹10 remains ₹10)
2. Balance Sheet Impact
- Split: No balance sheet change — cosmetic accounting only
- Bonus: Reserves reduce, paid-up capital increases — actual balance sheet movement
3. Reserve Requirement
- Split: No reserve needed — purely a restructuring of face value
- Bonus: Company must have free reserves (retained earnings, general reserves) to capitalise
4. Signal
- Split: Signals the share price has risen significantly (making it expensive for retail)
- Bonus: Signals the company has accumulated substantial free reserves and is rewarding shareholders without depleting cash
According to BSE India, bonus issues are governed by SEBI's ICDR Regulations — companies must have sufficient free reserves and cannot issue bonus shares out of revaluation reserves.
Tax Treatment — Where They Differ
| Stock Split | Bonus Issue | |
|---|---|---|
| Tax on receipt | None | None |
| Cost of acquisition | Original cost re-allocated across more shares | ₹0 for bonus shares |
| Capital gains on sale | Based on original cost, now spread across more shares | Entire sale value = capital gain |
| Holding period (LTCG) | Starts from original purchase date | Starts from date of bonus issue |
The bonus share tax trap: Since the cost of acquisition for bonus shares is ₹0, when you sell them, the entire sale value is treated as capital gain — even if you've held the original shares for years. New investors who received bonus shares in a high-priced company may face a large tax bill on a "notional" gain if they sell quickly.
What Each Signal Actually Means
What a Stock Split Signals
A stock split signals that the price has risen. That's all. It says nothing about whether the business is performing well or poorly — a company with declining fundamentals can split its stock. The price history is the only prerequisite.
What a Bonus Issue Signals
A bonus issue signals that the reserves have built up — meaning the company has been generating profits and retaining them. This is a slightly stronger business signal than a split, because you can only issue bonus shares if you have the reserves to support it.
However, neither a split nor a bonus issue tells you about earnings quality — whether those profits are real and repeatable, or inflated by one-time items.
Key Takeaways
- Both split and bonus issue increase your share count and reduce price per share — total investment value stays unchanged in both cases
- A split changes face value; a bonus issue does not — this is the structural difference
- A bonus issue requires free reserves; a split does not
- Bonus shares have ₹0 cost of acquisition — capital gains on sale can be significant
- Neither action changes business fundamentals — check the underlying earnings before reading too much into a corporate action announcement
Looking Past the Corporate Action
Both stock splits and bonus issues are signals about the past — they tell you the price rose (split) or reserves accumulated (bonus). What investors actually need to know is: is the business that drove those gains still healthy today?
Margins may be compressing. Management confidence may have shifted since the reserves were built up. Earnings quality may have deteriorated.
StockMirror's Earnings Quality signal shows whether profits are clean or driven by one-time items. The Management Confidence signal shows whether the management team is genuinely confident in the current business — not just rewarding shareholders for past performance.
Check the earnings analysis for any company → /TICKER/earnings — before acting on a corporate action announcement.
Frequently Asked Questions
What is the difference between a stock split and a bonus issue?
In a stock split, each existing share is divided into smaller shares by reducing face value (e.g., ₹10 to ₹5). In a bonus issue, the company issues additional shares free to existing shareholders by capitalising reserves — face value stays unchanged. Both increase share count and reduce price proportionally, but use different accounting mechanisms.
Does a stock split or bonus issue give you free shares?
Neither gives you free shares in a value sense — both simply redistribute the same total value across more shares. In a bonus issue, new shares are issued from the company's accumulated reserves. In a split, no new shares are issued — existing shares are subdivided. Your ownership percentage stays the same in both cases.
Which is better — stock split or bonus issue?
Neither is inherently better for investors since both keep total investment value unchanged. A bonus issue uses company reserves (which could otherwise be paid as dividend), while a split only changes face value. A higher bonus ratio (like 4:1) is a stronger signal of reserve accumulation than a split, but neither changes fundamental business value.
Is bonus issue taxable in India?
Bonus shares themselves are not taxed when received. However, the cost of acquisition for bonus shares is ₹0. When you sell bonus shares, the entire sale value is treated as capital gain — LTCG (12.5%) if held more than 12 months, STCG (20%) if held less.
What is a bonus issue ratio?
A bonus issue ratio tells you how many additional shares you receive for every share you hold. A 1:1 bonus means shares double. A 4:1 bonus means you receive 4 additional shares for every 1 held — shares become 5×. Sangam Finserv issued a 4:1 bonus in February 2025, turning every 1 share into 5.
Related Articles
- What Is a Stock Split in India
- What Is Dividend Record Date vs Ex-Date
- What Is Face Value of a Share
Disclaimer: Corporate action data referenced from NSE/BSE filings. Not financial advice.