Earnings per share (Tables)

12 Months Ended

Mar. 31, 2026

Basic and Diluted Earnings Per Shares [Abstract]

Basic Earnings Per Share [Table Text Block]

The weighted average number of equity shares outstanding, used for calculating the basic earnings per share, are as follows:

	For the Year Ended March 31,
	2026		2025		2024*
Number of equity shares at the beginning of the year (excluding treasury shares)		832,003,105		832,642,375		830,783,660
Effect of equity shares issued on exercise of stock options		437,482		308,031		1,184,855
Weighted average number of equity shares – Basic		832,440,587		832,950,406		831,968,515
Earnings per share of par value Rs.1 – Basic		51.48		67.88		66.93

*Earnings per share is computed after giving effect to 1:5 forward stock split effective October 28, 2024 for all periods presented. Refer to Note 19 of these consolidated financial statements for further details regarding such stock split.

Diluted Earnings Per Share [Table Text Block]

The weighted average number of equity shares outstanding, used for calculating the diluted earnings per share, are as follows:

	For the Year Ended March 31,
	2026		2025		2024
Weighted average number of equity shares – Basic		832,440,587		832,950,406		831,968,515
Dilutive effect of stock options outstanding (1)		891,102		1,228,728		1,569,165
Weighted average number of equity shares – Diluted		833,331,689		834,179,134		833,537,680
Earnings per share of par value Rs.1 – Diluted		51.42		67.78		66.80

(1)

As of March 31, 2026, 2025, and 2024, 1,983,310, 941,080, and 1,227,725 options, respectively, were excluded from the diluted weighted average number of equity shares calculation because their effect would have been anti-dilutive. The average market value of the Company’s shares for the purpose of calculating the dilutive effect of stock options was based on quoted market prices for the year during which the options were outstanding.