Earnings Per Share (EPS): How to Calculate
Basic and Diluted EPS Under Ind AS 33
Basic and Diluted EPS under Ind AS 33 measure how much profit a company has earned for each ordinary share, and the standard requires both figures to be shown on the face of the statement of profit and loss. Basic EPS is simply the profit attributable to ordinary equity holders divided by the weighted average number of ordinary shares outstanding during the period, while Diluted EPS adjusts both the numerator and the denominator to reflect what EPS would look like if every dilutive convertible instrument, option, and warrant were converted into ordinary shares today.
For CFOs, finance controllers, and company secretaries preparing financial statements for listed entities or companies in the process of listing, getting this calculation right matters because EPS is one of the most closely watched numbers by investors, analysts, and lenders — a wrong treatment of a bonus issue, a rights issue, or a convertible instrument can materially misstate a figure that appears right at the top of every quarterly result.
What Is EPS and Why Does Ind AS 33 Matter for Your Financial Statements?
EPS, or earnings per share, tells shareholders how much of the company's profit is attributable to each ordinary share they hold, and Ind AS 33 is the accounting standard that governs how this figure is measured, presented, and disclosed. The standard applies mandatorily to companies whose ordinary shares or potential ordinary shares are traded in a public market, and to companies that are in the process of filing statements to issue shares to the public.
Ind AS 33 matters because it does not leave EPS calculation to management discretion. It prescribes a precise formula for both basic and diluted EPS, requires retrospective restatement of comparative EPS whenever the number of shares changes through a bonus issue or split, and mandates disclosure of diluted EPS even when it equals basic EPS or results in a loss per share. This consistency is what allows an analyst to compare EPS trends across companies and across years without adjusting for each company's own accounting choices.
How Do You Calculate Basic EPS Under Ind AS 33?
You calculate Basic EPS under Ind AS 33 by dividing the profit or loss attributable to ordinary equity holders of the parent by the weighted average number of ordinary shares outstanding during the period. The formula is straightforward, but each component needs care.
The numerator is profit after tax attributable to ordinary equity holders, after deducting preference dividends (including arrears on cumulative preference shares, whether or not declared) and any other adjustments attributable to preference shareholders. The denominator is the weighted average number of ordinary shares outstanding, time-weighted for the portion of the year each tranche of shares was actually in issue.
Opening Shares
10,00,000 shares outstanding at the start of the year
Fresh Issue
2,00,000 shares issued for cash exactly 6 months into the year — weighted at 6/12
Basic EPS
₹2,20,00,000 profit ÷ 11,00,000 weighted average shares = ₹20 per share
If a company reported a profit of Rs 2,20,00,000 attributable to ordinary shareholders for the year, Basic EPS would be Rs 2,20,00,000 divided by 11,00,000 shares, or Rs 20 per share. The weighted average always reflects the actual time each tranche of shares was in issue, except for bonus issues and splits, which are treated retrospectively rather than time-weighted.
What Is Diluted EPS and How Is It Different From Basic EPS?
Diluted EPS is the EPS figure a company would report if every dilutive potential ordinary share outstanding — convertible debentures, convertible preference shares, employee stock options, and warrants — were converted into ordinary shares. It differs from Basic EPS because it adjusts both the profit figure and the share count to reflect this hypothetical, fully converted position.
Potential ordinary shares are only included in Diluted EPS if they are dilutive, meaning their inclusion would decrease EPS or increase loss per share from continuing operations. An instrument that would actually increase EPS if converted is antidilutive, and Ind AS 33 requires it to be excluded from the diluted figure entirely — a company cannot pick and choose which instruments to include; the dilutive-or-antidilutive test is mechanical and applied instrument by instrument.
🔄 Convertible Debentures
Tested under the if-converted method — assume conversion at the start of the period, or date of issue if later, and add back after-tax interest to profit.
📈 Convertible Preference Shares
Also tested under the if-converted method — add back preference dividends that would no longer be paid on conversion.
🎯 Options & Warrants
Tested under the treasury stock method — exercise proceeds are assumed used to buy back shares at the average market price.
How Do You Calculate Diluted EPS Step by Step?
You calculate Diluted EPS by identifying every potential ordinary share, testing each one for dilution, and then adjusting both the profit figure and the share count before recomputing the ratio. Here is the process in practice:
- Identify all potential ordinary shares outstanding. List every convertible debenture, convertible preference share, employee stock option, warrant, and contingently issuable share arrangement in existence during the period, along with their conversion terms and exercise prices.
- Test each instrument for dilution using the treasury stock or if-converted method. For options and warrants, apply the treasury stock method: assume the proceeds from exercise are used to buy back shares at the average market price during the period, and only the incremental shares issued over what could be repurchased are added to the denominator. For convertible debentures and convertible preference shares, apply the if-converted method: assume conversion at the start of the period, or date of issue, if later.
- Adjust the numerator for after-tax effects of conversion. Add back the after-tax interest expense on convertible debentures, and add back preference dividends that would no longer be paid if convertible preference shares were converted, since the profit attributable to ordinary shareholders would increase by these amounts.
- Adjust the denominator for the incremental shares from each dilutive instrument. Add the additional ordinary shares that would arise from conversion or exercise, computed under the treasury stock or if-converted method, to the weighted average number of ordinary shares used for Basic EPS.
- Rank potential ordinary shares from most dilutive to least dilutive. When several potential ordinary shares exist, include them in the diluted EPS calculation in sequence, starting with the most dilutive, and stop including further instruments once an instrument would actually increase EPS rather than decrease it — that instrument and any less dilutive ones are antidilutive and must be excluded.
- Recompute and disclose Diluted EPS alongside Basic EPS. Present both figures with equal prominence on the face of the statement of profit and loss for every period presented, even if Diluted EPS equals Basic EPS, or if the company has reported a loss for the period.
Diluted EPS is a conservative ceiling, not a target. Ind AS 33 only allows dilutive instruments — those that reduce EPS — into the diluted figure. Antidilutive instruments are always excluded, so a company cannot report a diluted EPS that is higher than basic EPS in a profit-making period.
How Should Bonus Issues, Rights Issues, and Share Splits Be Treated in EPS Calculations?
Bonus issues, share splits, and share consolidations are treated as if they occurred at the beginning of the earliest period presented in the financial statements, because they increase or decrease the number of shares without changing the resources available to the company. This means every comparative period's EPS figure is restated using the post-bonus or post-split share count, so a five-year EPS trend line stays comparable even after a bonus issue midway through.
A rights issue is treated differently because it usually involves both a bonus element and a genuine issue of shares for cash. If the rights issue is priced at fair value, it is treated like any other ordinary share issue and time-weighted normally. If it is priced below fair value, Ind AS 33 requires the weighted average number of shares for all periods before the rights issue to be adjusted by a factor equal to the fair value per share immediately before the exercise of the rights, divided by the theoretical ex-rights fair value per share — effectively splitting the rights issue into its bonus component and its fair-value component.
| Event | Treatment | Time-Weighted? | Comparatives Restated? |
|---|---|---|---|
| Bonus Issue | Treated as occurring at the start of the earliest period presented | No | Yes |
| Share Split / Consolidation | Same retrospective treatment as a bonus issue | No | Yes |
| Fresh Issue for Cash (at fair value) | Treated as an ordinary share issue | Yes | No |
| Rights Issue (below fair value) | Split into bonus component and fair-value component using a theoretical ex-rights price adjustment factor | Yes | Partially |
How Has EPS Reporting in India Evolved From AS 20 to Ind AS 33?
EPS reporting in India has moved from an unregulated, inconsistently disclosed number before 1991 to a precisely defined, IFRS-converged metric under Ind AS 33 today.
1991
No Dedicated EPS Standard
The Companies Act, 1956 did not prescribe any dedicated standard for computing or disclosing EPS, and listed companies reported it, if at all, using their own internal conventions with little comparability across the market.
Liberalisation Drives Demand for Comparability
After liberalisation opened Indian markets to foreign institutional investment, the need for internationally comparable per-share metrics grew quickly.
ICAI Issues AS 20
The Institute of Chartered Accountants of India issued AS 20, Earnings Per Share, making it mandatory for listed companies and companies in the process of listing from 2001 onward, introducing the basic and diluted EPS distinction.
MCA Notifies Ind AS 33
The Companies Act, 2013 and the Ministry of Corporate Affairs' notification of the Companies (Indian Accounting Standards) Rules, 2015 converged Indian standards with IFRS, closely aligning Ind AS 33 with the international IAS 33.
2018
Phased Mandatory Adoption
Ind AS 33 became mandatory in phases — from FY 2016-17 for large companies and FY 2017-18 for listed companies — and has since replaced AS 20 for every Ind AS-compliant entity.
Which Companies Are Required to Disclose EPS Under Ind AS 33?
Companies whose ordinary shares or potential ordinary shares are traded in a public market, or that have filed or are in the process of filing financial statements with a regulator for the purpose of issuing shares to the public, are required to disclose EPS under Ind AS 33. This covers every listed company and any unlisted company preparing for an IPO.
Companies that fall under Phase I or Phase II of the Companies (Indian Accounting Standards) Rules, 2015 — based on net worth and listing status — must apply Ind AS, including Ind AS 33, in full. For finance teams navigating this transition or preparing EPS disclosures for the first time, PKJN & Co., Chartered Accountants can help review the calculation methodology and disclosure format before results are finalised.
Ind AS 33 requires EPS to be presented on the face of the statement of profit and loss even when the result is a loss — a negative EPS figure must still be shown, and rounding conventions should be applied consistently across all periods presented.
A common error is excluding a convertible instrument from diluted EPS simply because it looks complex, without actually testing whether it is dilutive or antidilutive. Ind AS 33 requires this test to be performed for every potential ordinary share, individually and in every period presented, regardless of how the instrument was treated in the prior year.
What Is a Summary of Basic vs Diluted EPS Under Ind AS 33?
The table below provides a quick-reference summary comparing the two EPS measures required under the standard.
| Aspect | Basic EPS | Diluted EPS |
|---|---|---|
| Numerator | Profit attributable to ordinary equity holders, after preference dividends | Numerator adjusted for after-tax interest and preference dividends on dilutive instruments |
| Denominator | Weighted average number of ordinary shares actually outstanding | Weighted average shares plus incremental shares from dilutive instruments |
| Instruments Included | None — only shares actually in issue | Convertible debentures, convertible preference shares, options and warrants — if dilutive |
| Method Applied | Time-weighting of actual shares in issue | Treasury stock method (options/warrants); if-converted method (convertibles) |
Frequently Asked Questions
What is the difference between basic EPS and diluted EPS?
Basic EPS measures profit attributable to ordinary equity holders divided by the weighted average number of ordinary shares actually outstanding during the period. Diluted EPS goes further by assuming that every dilutive potential ordinary share — convertible debentures, convertible preference shares, share options, and warrants — has already been converted into equity shares.
Because diluted EPS reflects a larger, hypothetical share base, it is almost always equal to or lower than basic EPS, giving investors a more conservative view of per-share earnings.
How do you calculate the weighted average number of shares for EPS?
You calculate the weighted average number of shares by time-weighting the shares outstanding for the portion of the period they were actually in issue. If a company starts the year with 10,00,000 shares and issues another 2,00,000 shares for cash after 6 months, the weighted average is 10,00,000 plus 2,00,000 multiplied by 6/12, giving 11,00,000 shares.
Shares issued through a bonus issue or share split are not time-weighted this way; instead, the weighted average number of shares for all periods presented is restated as if the bonus shares always existed.
What are potential ordinary shares under Ind AS 33?
Potential ordinary shares are financial instruments or contracts that may entitle their holder to ordinary shares in the future, and they are the building blocks of diluted EPS. Common examples include convertible debentures, convertible preference shares, employee stock options, share warrants, and contingently issuable shares under an acquisition or bonus agreement.
Under Ind AS 33, each potential ordinary share is tested individually to check whether including it would decrease EPS (dilutive) or increase EPS (antidilutive); only dilutive instruments are included in the diluted EPS calculation.
How is a bonus issue adjusted in EPS calculations?
A bonus issue increases the number of shares outstanding without bringing in any new resources, so Ind AS 33 requires it to be treated as if it had occurred at the beginning of the earliest period presented in the financial statements. This means both the current year's weighted average number of shares and every comparative period's EPS figure are restated using the post-bonus share count.
A share split and a share consolidation are adjusted in exactly the same retrospective manner, so EPS trends remain comparable year on year.
Is diluted EPS always lower than basic EPS?
Diluted EPS is always equal to or lower than basic EPS when the company reports a profit, because Ind AS 33 only allows dilutive potential ordinary shares — those that reduce EPS — to be included in the diluted figure; antidilutive instruments are always excluded.
In a loss-making year, however, most potential ordinary shares become antidilutive because converting them would reduce the loss per share, so diluted loss per share is often equal to basic loss per share rather than lower.
Do all companies need to disclose EPS under Ind AS 33?
No. Ind AS 33 applies mandatorily only to entities whose ordinary shares or potential ordinary shares are traded in a public market, or that are in the process of filing financial statements for the purpose of issuing shares to the public.
Other entities that choose to present EPS voluntarily must still follow the full measurement and disclosure requirements of Ind AS 33. Once a company falls under the Companies (Indian Accounting Standards) Rules, 2015 as a Phase I or Phase II entity and its shares are listed, EPS disclosure on the face of the statement of profit and loss becomes compulsory.
