Earnings Per Share (EPS): How to Calculate Basic and Diluted EPS Under Ind AS 33

Earnings Per Share, or EPS, is one of the most widely quoted financial metrics in the Indian capital markets. Every analyst report, every stock screener, and every listed company's annual report carries an EPS figure — and yet, the method for calculating it is far more nuanced than most people realise. Under Ind AS 33, Indian companies that follow the Ind AS framework must calculate and disclose both Basic EPS and Diluted EPS using a prescribed methodology substantially aligned with IAS 33 issued by the IASB. Getting this calculation right is not just a compliance requirement — it directly affects how investors evaluate a company's profitability and how analysts model future earnings.

Casela Advisors is a Chartered Accountant firm headquartered in Andheri East, Mumbai, with 25+ years of experience in financial reporting, Ind AS implementation, statutory audit, and capital markets advisory. Our team works with listed companies, IPO-bound entities, and large unlisted companies across manufacturing, IT, real estate, NBFC, healthcare, and other sectors. This guide covers the definition of EPS, the step-by-step calculation of Basic and Diluted EPS, worked numerical examples, sector-specific nuances, and frequently asked questions.

What Is Earnings Per Share (EPS) and Why Does It Matter?

Earnings Per Share is the portion of a company's net profit attributable to each outstanding ordinary (equity) share. It is calculated by dividing the profit or loss attributable to ordinary equity holders by the weighted average number of ordinary shares outstanding during the reporting period. EPS is a fundamental input in equity valuation — most notably in the Price-to-Earnings (P/E) ratio, which divides the market price of a share by its EPS. A higher EPS, all else equal, indicates better profitability per share and often supports a higher market valuation.

Ind AS 33 governs the calculation and disclosure of EPS for Indian companies that prepare financial statements in accordance with the Ind AS framework. The standard was notified by the Ministry of Corporate Affairs (MCA) under the Companies (Indian Accounting Standards) Rules, 2015 and applies to companies whose ordinary shares or potential ordinary shares are publicly traded, and to companies in the process of issuing such shares in public markets. The standard requires disclosure of both Basic EPS and Diluted EPS — two distinct figures that serve different analytical purposes.

Who Is Required to Apply Ind AS 33?

Ind AS 33 is mandatory for the following categories of entities:

• Listed companies — companies whose ordinary shares or potential ordinary shares (such as convertible debentures or warrants) are listed on any recognised stock exchange in India, including the NSE, BSE, or regional exchanges.
• Companies in the process of listing — entities that have filed for a public issue of ordinary shares or potential ordinary shares, whose securities will be listed upon completion of the IPO.
• Companies that voluntarily present EPS — even if not required to apply Ind AS 33, a company that chooses to disclose EPS must comply with the full requirements of the standard.

Importantly, Ind AS 33 applies to both consolidated and standalone financial statements. Where a company presents both sets of financial statements, EPS must be disclosed in both. The standard applies to the parent company's shares — not to those of any subsidiary — when consolidated EPS is disclosed.

How Did EPS Reporting Evolve in India — From Pre-1991 to Ind AS?

Before the 1991 economic liberalisation, the Indian capital markets were relatively underdeveloped. The Bombay Stock Exchange (BSE) existed, but equity analysis as a discipline was nascent. Most publicly listed companies disclosed EPS on a simple basis — dividing annual net profit by the number of shares outstanding at year end. There was no standard governing the treatment of potential ordinary shares, no weighted average calculation, and no concept of diluted EPS. Companies with significant outstanding convertible securities could therefore report an EPS materially more favourable than the "true" per-share earnings once dilution was taken into account.

The 1991 liberalisation opened India to foreign institutional investment, created a boom in primary market activity, and brought Indian companies into competition with global peers for capital. SEBI was established in 1992 and began issuing disclosure norms for listed companies. The Institute of Chartered Accountants of India (ICAI) issued AS 20 — Earnings Per Share — in 2001, which introduced the weighted average number of shares concept and required disclosure of diluted EPS for the first time under Indian GAAP.

The transition to Ind AS, which began in 2016 for Phase I companies, replaced AS 20 with Ind AS 33. Ind AS 33 is substantially aligned with IAS 33 and introduced more rigorous rules around the treatment of options, warrants, convertible instruments, and contingently issuable shares. The standard also aligns with SEBI's disclosure requirements under the LODR Regulations and brings Indian EPS disclosure in line with what global investors expect from Indian companies. Our Ind AS Implementation Services help companies navigate this transition and ensure Ind AS 33 disclosures are accurate from day one.

How to Calculate Basic EPS Under Ind AS 33

Basic EPS is the simpler of the two figures. It measures earnings per share without considering any dilutive instruments — it assumes only the currently issued and outstanding ordinary shares exist.

The framework for the Basic EPS calculation — each row is expanded step by step below.

Worked Example — Basic EPS Calculation

Illustrative figures for a hypothetical company, for orientation only.

How to Calculate Diluted EPS Under Ind AS 33

Diluted EPS is the more conservative and analytically important figure. It shows what EPS would be if all dilutive potential ordinary shares were converted into actual ordinary shares. Dilutive potential ordinary shares include convertible debentures, convertible preference shares, employee stock options (ESOPs), warrants, and other instruments that could result in the issuance of additional ordinary shares.

The purpose of Diluted EPS is to inform investors of the worst-case scenario — if all instruments that could be converted into shares are in fact converted, what will earnings per share be? A large gap between Basic EPS and Diluted EPS signals significant dilution risk and is a key consideration in equity valuation.

Worked Example — Diluted EPS Calculation

Using the same company from the Basic EPS example above:

Illustrative figures for a hypothetical company, for orientation only.

How Does Ind AS 33 Apply Across Different Sectors?

Why Choose Casela Advisors for Ind AS 33 Compliance and EPS Advisory?

• Deep Ind AS Expertise: Our team has worked on Ind AS implementation and transition engagements across multiple industries. We understand the nuances of Ind AS 33 — from the weighted average calculation to the correct application of the treasury stock method for ESOPs and the sequencing of dilutive instruments.
• Capital Markets Experience: We have worked with listed companies, pre-IPO companies, and SEBI-registered entities on EPS disclosures for annual reports, DRHPs, and investor presentations. We know exactly what SEBI and stock exchange filings require.
• ESOP and Equity Structure Advisory: Many companies get the diluted EPS calculation wrong because they incorrectly treat all ESOPs as dilutive. We conduct a rigorous in-the-money / out-of-the-money analysis for each ESOP tranche, ensuring only genuinely dilutive options are included. Visit our ESOP Advisory page for more on our equity compensation services.
• Statutory Audit Readiness: Our Ind AS 33 advisory ensures your EPS disclosures are audit-ready. Statutory auditors must verify EPS calculations as part of the financial statement audit, and we ensure our clients have complete documentation supporting every figure.
• Integrated Financial Reporting Support: EPS is just one part of a broader financial reporting picture. Casela Advisors provides end-to-end support through our Financial Reporting & MIS Services, ensuring your financial statements tell a clear, accurate story to investors and regulators.

A Working Checklist for EPS Preparers

1. Confirm applicability first. Is the company listed, in the process of listing, or voluntarily disclosing EPS? Ind AS 33 applies in full to all three.
2. Start with the numerator. Deduct preference dividends and other preference-share appropriations from profit before dividing by anything.
3. Weight the shares, don't just count them. Every share issued or bought back mid-year is weighted by the fraction of the year it was outstanding.
4. Apply bonus issues and share splits retrospectively to every period presented, including comparatives.
5. List every potential ordinary share — NCDs, preference shares, ESOPs, warrants, contingently issuable shares — before testing any of them.
6. Test each instrument individually for dilution using the earnings-per-incremental-share test, and exclude anti-dilutive instruments from the calculation while still disclosing them in the notes.
7. For options and warrants, apply the Treasury Stock Method at the average market price for the period, tranche by tranche.

EPS and Ind AS 33 — Common Questions