29. Earnings per equity share

A reconciliation of the equity shares used in the computation of basic and diluted earnings per equity share has been provided below. Potential equity shares in the nature of ESOPs with average outstanding balance of nil were excluded from the calculation of diluted earnings per share for the years ended March 31, 2017 and March 31, 2018, respectively, as these were anti-dilutive.


	As of March 31,
	2016		2017		2018
Weighted average number of equity shares used in computing basic earnings per equity share		2,517,429,120		2,544,333,609		2,580,538,505
Effect of potential equity shares for stock options outstanding		27,938,561		31,017,917		33,400,121

Weighted average number of equity shares used in computing diluted earnings per equity share		2,545,367,681		2,575,351,526		2,613,938,626

The following are reconciliations of basic and diluted earnings per equity share and earnings per ADS.


	Fiscal years ended March 31,
	2016		2017		2018		2018
Basic earnings per share	Rs.	46.84	Rs.	55.23	Rs.	69.18	US$	1.06
Effect of potential equity shares for stock options outstanding		0.51		0.66		0.89		0.01

Diluted earnings per share	Rs.	46.33	Rs.	54.57	Rs.	68.29	US$	1.05


Basic earnings per ADS	Rs.	140.52	Rs.	165.69	Rs.	207.54	US$	3.18
Effect of potential equity shares for stock options outstanding		1.53		1.98		2.67		0.03

Diluted earnings per ADS	Rs.	138.99	Rs.	163.71	Rs.	204.87	US$	3.15

Dividends

Any dividends declared by the Bank are based on the profit available for distribution as reported in the statutory financial statements of the Bank prepared in accordance with Indian GAAP. Additionally, the Banking Regulation Act and related regulations require the Bank to transfer 25% of its Indian GAAP profit after tax to a non-distributable statutory reserve and to meet certain other conditions in order to pay dividends without prior RBI approval. As per the RBI guidelines, the dividend payout (excluding dividend tax) for March 31, 2018 cannot exceed 35% of net income of Rs. 174,867.3 million as calculated under Indian GAAP. Accordingly, the net income reported in these financial statements may not be fully distributable in that year. Dividends declared for the years ended March 31, 2016, March 31, 2017 and March 31, 2018 were Rs. 9.5, Rs. 11.0 and Rs. 13.0 per equity share, respectively.