1. What IND AS 33 Covers — Objective and Scope
IND AS 33 prescribes the principles for determining and presenting earnings per share, so that the performance of different entities in the same period — and of the same entity across different periods — can be compared. It applies to entities whose ordinary shares or potential ordinary shares are publicly traded, and to entities that are in the process of issuing such shares; other entities that choose to disclose EPS must also compute it in accordance with this standard.
2. Basic EPS — The Numerator and Denominator
Basic EPS = Profit or loss attributable to ordinary equity holders of the parent ÷ Weighted average number of ordinary shares outstanding during the period.
The numerator is adjusted for the after-tax amount of preference dividends, and other differences that would arise on the redemption of preference shares classified as equity, or arising from other similar effects of preference shares classified as equity — these are deducted because that portion of profit belongs to preference shareholders, not the ordinary shareholders EPS is meant to measure.
3. The Weighted Average Number of Shares
Shares are time-weighted for the portion of the period they were outstanding, because ordinary shares issued during the period contribute to earnings only from the date they were issued.
| Event | Weighting treatment |
|---|---|
| Shares issued for cash | Weighted from the date the entity becomes entitled to the cash consideration (usually the issue date) |
| Shares issued on conversion of a mandatorily convertible instrument | Weighted from the date the contract for the future issue of shares was entered into |
| Shares bought back / cancelled | Excluded from the weighted average from the date of buyback/cancellation |
| Contingently issuable shares | Included only from the date all necessary conditions for issue have been satisfied |
4. Bonus Issues, Share Splits and Rights Issues
A bonus issue, share split, or share consolidation increases (or decreases) the number of ordinary shares outstanding without a corresponding change in resources. These are treated as if they had occurred at the start of the earliest period presented — both current and prior period EPS figures are restated to reflect the new share count, so trend comparisons across periods remain meaningful even though the underlying earnings didn't change.
A rights issue is more complex, because it typically includes a bonus element — new shares are usually offered below the current fair value of the shares. The weighted average number of shares for all periods prior to the rights issue is adjusted by a bonus element factor, computed as the fair value per share immediately before the rights issue, divided by the theoretical ex-rights fair value per share.
5. Potential Ordinary Shares and Dilution
A potential ordinary share is a financial instrument or other contract that may entitle its holder to ordinary shares — convertible debentures, convertible preference shares, share options, warrants, and shares issuable under share-based payment arrangements. Because exercising or converting these would increase the ordinary share count (diluting existing holders' claim on earnings), diluted EPS is calculated to show the maximum potential dilution that could occur, assuming conversion at the beginning of the period (or the date of issue of the potential ordinary share, if later).
6. Computing Diluted EPS
Diluted EPS adjusts both the numerator and denominator of basic EPS for the effects of all dilutive potential ordinary shares:
Adjust the numerator
Add back the after-tax amount of any interest expense (for convertible debt) or preference dividends (for convertible preference shares) that would not have been paid had the conversion actually occurred at the start of the period.
Adjust the denominator
Add the additional ordinary shares that would be issued on conversion of all dilutive potential ordinary shares, assuming conversion occurred at the start of the period.
For share options and warrants, the assumed proceeds from their exercise are treated as if used to buy back shares at the average market price for the period (the treasury stock method) — only the incremental shares (shares issuable less shares deemed repurchased) are added to the denominator, since the exercise proceeds partially offset the dilutive effect.
7. The Anti-Dilution Test
Potential ordinary shares are included in diluted EPS only if their conversion would decrease EPS or increase the loss per share. If including an instrument would actually improve (increase) EPS, it is anti-dilutive and must be excluded from that period's diluted EPS calculation — anti-dilutive instruments are never allowed to make diluted EPS look better than it would be without them.
Each potential ordinary share (or class of them) is tested individually, and instruments are ranked and included in sequence from most dilutive to least dilutive, stopping once further inclusion would start increasing EPS rather than decreasing it — a purely mechanical, iterative process, not a single blended calculation.
8. Worked Example — Basic and Diluted EPS
Scenario: Meridian Industries Ltd reports profit attributable to ordinary shareholders of ₹5,00,00,000 for the year. It had 40,00,000 ordinary shares outstanding all year, and also has 5,00,000 outstanding 10% convertible debentures of ₹100 each, each convertible into 2 ordinary shares, with an effective tax rate of 25%.
Step 1 — Basic EPS
| Item | Amount |
|---|---|
| Profit attributable to ordinary shareholders | ₹5,00,00,000 |
| Weighted average ordinary shares | 40,00,000 |
| Basic EPS (5,00,00,000 ÷ 40,00,000) | ₹12.50 |
Step 2 — Diluted EPS
| Item | Amount |
|---|---|
| Interest on debentures (5,00,000 × ₹100 × 10%) | ₹50,00,000 |
| After-tax interest added back (₹50,00,000 × (1 − 25%)) | ₹37,50,000 |
| Adjusted profit (₹5,00,00,000 + ₹37,50,000) | ₹5,37,50,000 |
| Additional shares on conversion (5,00,000 × 2) | 10,00,000 |
| Diluted weighted average shares (40,00,000 + 10,00,000) | 50,00,000 |
| Diluted EPS (5,37,50,000 ÷ 50,00,000) | ₹10.75 |
Since diluted EPS (₹10.75) is lower than basic EPS (₹12.50), the convertible debentures are genuinely dilutive and are correctly included. If the resulting diluted EPS had instead come out above ₹12.50, the debentures would have been anti-dilutive and excluded, and diluted EPS would simply equal basic EPS for that period.
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| Aspect | Old IGAAP (AS 20) | IND AS 33 |
|---|---|---|
| Core basic/diluted EPS mechanics | Same weighted-average and conversion-assumption approach | Broadly converged — no fundamental change |
| Anti-dilution sequencing | Less detailed application guidance on ranking multiple instruments | Explicit "most to least dilutive" sequencing methodology with detailed examples |
| Contingently issuable shares | Limited specific guidance | Detailed guidance on when such shares enter basic vs diluted EPS |
| Rights issue bonus element | Similar concept, less prescriptive | More detailed formula guidance for the theoretical ex-rights fair value calculation |
| Disclosures | Less extensive | Requires a reconciliation of the numerators and denominators used for basic and diluted EPS |
10. Presentation and Disclosures
An entity presents basic and diluted EPS on the face of the statement of profit and loss, with equal prominence for all periods presented, even where the amounts are negative (a loss per share). Where diluted EPS equals basic EPS in every period presented, that can be disclosed by presentation on a single line. Disclosures include a reconciliation of the profit or loss figures used as the numerators for basic and diluted EPS to the entity's profit or loss, and a reconciliation of the weighted average number of shares used as denominators, along with instruments that could potentially dilute basic EPS in the future but were excluded from the current diluted EPS calculation because they were anti-dilutive.
11. Common Mistakes CAs Make
Error 1 — Forgetting to restate prior period EPS after a bonus issue. A bonus issue applies retrospectively to every period presented — showing prior-year EPS on the old, smaller share count alongside a current year on the new, larger count produces a misleading trend.
Error 2 — Including an anti-dilutive instrument in diluted EPS. Every potential ordinary share must be tested — an instrument that would increase (not decrease) EPS if converted must be excluded from that period's diluted EPS, even if it was dilutive in a different period.
Error 3 — Forgetting the after-tax add-back for convertible debt interest. When testing whether convertible debt is dilutive, the interest saved on assumed conversion must be added back to profit net of tax — using the pre-tax interest figure overstates the numerator adjustment and can produce the wrong dilution conclusion.
Error 4 — Ignoring the bonus element in a rights issue priced below fair value. A rights issue below current market price isn't a simple pro-rata increase in shares — the bonus element must be factored into the weighted average share calculation for periods before the rights issue too.
Error 5 — Testing all dilutive instruments together in one blended calculation instead of sequencing them. The standard requires testing potential ordinary shares in order from most to least dilutive, stopping once further additions would start increasing EPS — a single combined calculation can silently include an instrument that should have been excluded.
12. FAQs
How is basic EPS calculated under IND AS 33?
Basic EPS is calculated by dividing profit or loss attributable to ordinary equity holders of the parent by the weighted average number of ordinary shares outstanding during the period. Profit or loss is first adjusted for the after-tax effect of dividends and other items related to preference shares classified as equity, since those returns belong to preference holders, not ordinary shareholders.
What is the weighted average number of shares?
It is the number of ordinary shares outstanding at the start of the period, adjusted for shares bought back or issued during the period, weighted by a time-weighting factor reflecting the portion of the period they were outstanding. Shares issued for cash are weighted from the date the entity is entitled to the cash proceeds; shares issued in a bonus issue or share split are treated as if they had always been outstanding, with prior periods restated retrospectively.
What is a potential ordinary share and how does it create dilution?
A potential ordinary share is a financial instrument or contract that may entitle its holder to ordinary shares in the future — convertible bonds, convertible preference shares, options, warrants, and share-based payment arrangements. If exercised or converted, these would increase the number of ordinary shares outstanding, which is why diluted EPS assumes conversion at the start of the period (or the date of issue if later) to show the maximum potential dilution to existing shareholders' earnings per share.
What is the anti-dilution test in diluted EPS?
Potential ordinary shares are only included in diluted EPS if their conversion would decrease EPS or increase the loss per share — that is, if they are genuinely dilutive. If including a particular instrument would actually increase EPS (make it less negative or higher), it is anti-dilutive and excluded from that period's diluted EPS calculation. Each instrument is tested individually, and the most dilutive combination is used, working from the most to least dilutive.
How does a bonus issue affect prior period EPS figures?
A bonus issue (or share split, or any other change in ordinary shares without a corresponding change in resources) is treated as if it had occurred at the start of the earliest period presented. Both basic and diluted EPS for all prior periods presented in the financial statements are restated retrospectively for the change in the number of shares, so trend comparisons remain meaningful.
Is IND AS 33 the same as IAS 33?
IND AS 33 is India's converged version of IAS 33 and follows the same basic and diluted EPS computation, weighted average shares methodology, and anti-dilution test. It replaces the older Indian AS 20, which used a broadly similar framework but with less detailed application guidance on the treatment of contingently issuable shares and the sequencing of multiple dilutive instruments.