Earnings Per Share (EPS): Basic, Diluted, Adjusted — and SEBI LODR Quarterly Mandate

Definition

Earnings Per Share (EPS) is the portion of a company’s net profit attributable to each outstanding equity share:

Basic EPS = (Net Profit After Tax − Preference Dividend) ÷ Weighted Average Shares Outstanding

EPS is the denominator in the P/E ratio and the primary per-share metric used in equity valuation. Under Indian law, Ind AS 33 (Earnings per Share) — adapted from IAS 33 — governs EPS computation for all companies with publicly traded debt or equity. SEBI LODR 2015 Regulation 33(3)(d) mandates that quarterly financial result filings include both basic and diluted EPS for all listed companies.

How It Is Computed

Basic EPS uses the weighted average number of ordinary shares outstanding during the period — each tranche weighted by months outstanding. Rights issues at fair value, bonus issues, and stock splits are adjusted retroactively to all prior periods presented (Ind AS 33).

Diluted EPS (Ind AS 33 para 31–63) assumes all dilutive potential equity instruments have been converted: ESOPs, convertible debentures, warrants. The denominator increases and the numerator may be adjusted (e.g., add back interest saved if convertible bonds convert). Diluted EPS ≤ Basic EPS always.

Adjusted EPS is not defined under Ind AS 33; it is an analyst construct that removes non-recurring items (impairments, one-time gains/losses, deferred tax reversals) to arrive at “normalised” or “core” EPS. Companies may disclose adjusted EPS voluntarily in earnings releases.

What High/Low Values Signal

EPS growth rate is the primary driver of P/E multiple expansion or contraction over time. Leibowitz (2002, Financial Analysts Journal) demonstrated that long-run equity returns decompose into dividend yield, earnings growth, and P/E change — with EPS growth as the central driver over multi-year horizons. Consistent EPS compounding at 15%+ over a decade is associated with exceptional value creation. Volatile EPS — common in cyclical sectors — makes single-year P/E unreliable as a valuation anchor.

Sector Dependency

EPS levels are incomparable across sectors without P/E context. A bank with EPS of ₹50 at 10× P/E and a software firm with EPS of ₹50 at 25× P/E are priced very differently. What matters is the rate of EPS growth and its sustainability. In regulated sectors (utilities, telecom), EPS growth is largely dictated by tariff orders and spectrum auctions. In consumer discretionary and IT, EPS growth is more management-driven. Cyclical sectors (commodities, steel) can see EPS swing 50–80% in a single year, making trailing EPS and P/E volatile.

Worked Example

TCS (Tata Consultancy Services, NSE: TCS) — FY2025 annual results (BSE filing, April 2025)

Approximate figures from TCS FY2025 annual results (consolidated, Ind AS 33 compliant):

• Net Profit After Tax (attributable to equity shareholders): ₹47,191 crore
• Preference Dividend: Nil
• Weighted Average Basic Shares: approximately 362 crore

Basic EPS ≈ ₹47,191 Cr ÷ 362 Cr ≈ ₹130.4 per share

Diluted EPS is marginally lower (~₹0.5–1.0) due to ESOP dilution. Five-year EPS CAGR (FY2020–FY2025): approximately 13–14%. At approximately ₹3,750 (NSE, April 2025), trailing P/E = ₹3,750 ÷ ₹130.4 ≈ 28.8×. Verify current figures at NSE/BSE filings or TCS investor relations.

Caveats

• Dilution timing: ESOP grants can significantly dilute EPS in high-growth companies without being captured in basic EPS. Compare basic and diluted EPS to detect material dilution from employee equity or convertible instruments.
• One-off items: Ind AS requires disclosure of exceptional items. These can inflate or deflate EPS in a single quarter. Normalised EPS is more representative of run-rate earnings.
• Buybacks: Share buybacks reduce the denominator and boost EPS without any operational improvement. EPS growth via buyback is fundamentally different from growth via business expansion.
• Currency effects: For Indian IT exporters, EPS in INR is boosted by INR depreciation vs. USD. Hedging policy and currency movement materially affect reported EPS quarter-to-quarter.

See Also

• P/E Ratio
• Return on Equity (ROE)
• Book Value per Share
• Stock Analysis in India (Pillar)
• TCS — Stock Page

Primary Source

• Ind AS 33 (Earnings per Share): mca.gov.in — Ind AS 33
• SEBI LODR 2015, Regulation 33(3)(d): sebi.gov.in

Disclosure: MintByte is registered with AMFI as a Mutual Fund Distributor (ARN-314872) and with APMI as a Portfolio Management Services distributor (APMI APRN-01658). The content on this page is educational and informational only. Nothing here constitutes investment advice, a recommendation to buy or sell any security, or a solicitation of any offer. Equity investments are subject to market risk. Please read all scheme-related documents and consult a SEBI-registered investment adviser before making any investment decision.