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Employee benefits (Tables)
 12 Months Ended
Mar. 31, 2020
Statement [LineItems]  
Summary of Employee Costs
a) Employee costs includes
 
 
  
Year ended March 31,
 
 
  
2018
 
  
2019
 
  
2020
 
Salaries and bonus
  
₹
261,981
 
  
₹
289,005
 
  
₹
315,036
 
Employee benefits plans
  
   
  
   
  
   
Gratuity and other defined benefit plans
  
 
1,532
 
  
 
1,459
 
  
 
1,845
 
Defined contribution plans
  
 
7,363
 
  
 
7,372
 
  
 
8,428
 
Share based compensation
  
 
1,347
 
  
 
1,938
 
  
 
1,262
 
 
  
 
 
 
  
 
 
 
  
 
 
 
 
  
₹
272,223
 
  
₹
299,774
 
  
₹
326,571
 
 
  
 
 
 
  
 
 
 
  
 
 
 
The employee benefit cost is recognized in the following line items in the consolidated statement of income:    
 
 
  
Year ended March 31,
 
 
  
2018
 
  
2019
 
  
2020
 
Cost of revenues
  
₹
228,937
 
  
₹
251,818
 
  
₹
279,356
 
Selling and marketing expenses
  
 
28,070
 
  
 
30,972
 
  
 
30,763
 
General and administrative expenses
  
 
15,216
 
  
 
16,984
 
  
 
16,452
 
 
  
 
 
 
  
 
 
 
  
 
 
 
 
  
₹
272,223
 
  
₹
299,774
 
  
₹
326,571
 
 
  
 
 
 
  
 
 
 
  
 
 
Summary of Defined Benefit Plan Actuarial (Gains) Losses Recognized in Other Comprehensive Income
Defined benefit plan actuarial (gains)/ losses recognized in other comprehensive income include:    
 
 
  
Year ended March 31,
 
 
  
2018
 
  
2019
 
  
2020
 
Re-measurement
of net defined benefit liability/(asset)
  
   
  
   
  
   
Return on plan assets excluding interest income - Loss/(Gain)
  
₹
(18
) 
  
₹
(49
) 
  
₹
76
 
Actuarial loss/ (gain) arising from financial assumptions
  
 
(296
) 
  
 
73
 
  
 
749
 
Actuarial loss/ (gain) arising from demographic assumptions
  
 
(54
) 
  
 
(40
) 
  
 
227
 
Actuarial loss/ (gain) arising from experience adjustments
  
 
(454
) 
  
 
(266
) 
  
 
194
 
 
  
 
 
 
  
 
 
 
  
 
 
 
 
  
₹
(822
) 
  
₹
(282
) 
  
₹
1,246
 
 
  
 
 
 
  
 
 
 
  
 
 
Summary of Defined Benefit Plans
Amount recognized in the consolidated statement of income in respect of defined benefit plans is as follows:
 
 
  
Year ended March 31,
 
 
  
2018
 
  
2019
 
  
2020
 
Current service cost
  
₹
1,525
 
  
₹
1,434
 
  
₹
1,782
 
Net interest on net defined benefit liability/(asset)
  
 
7
 
  
 
25
 
  
 
63
 
 
  
 
 
 
  
 
 
 
  
 
 
 
Net gratuity cost/(benefit)
  
 
1,532
 
  
 
1,459
 
  
 
1,845
 
 
  
 
 
 
  
 
 
 
  
 
 
 
Actual return on plan assets
  
₹
501
 
  
₹
607
 
  
₹
513
 
 
  
 
 
 
  
 
 
 
  
 
 
 
Summary of Change in Present Value of Defined Obligation and Plan Assets
Change in present value of defined benefit obligation is summarized below:
 
 
  
As at March 31,
 
 
  
2019
 
  
2020
 
Defined benefit obligation at the beginning of the year
  
₹
8,654
 
  
₹
10,485
 
Acquisitions
  
 
1,094
 
  
 
229
 
Current service cost
  
 
1,434
 
  
 
1,782
 
Interest on obligation
  
 
583
 
  
 
652
 
Benefits paid
  
 
(1,047
) 
  
 
(1,123
) 
Remeasurement loss/(gains)
  
   
  
   
Actuarial loss arising from financial assumptions
  
 
73
 
  
 
749
 
Actuarial loss/(gain) arising from demographic assumptions
  
 
(40
) 
  
 
227
 
Actuarial loss/(gain) arising from experience adjustments
  
 
(266
) 
  
 
194
 
Translation adjustment
  
 
—  
 
  
 
270
 
 
  
 
 
 
  
 
 
 
Defined benefit obligation at the end of the year
  
₹
10,485
 
  
₹
13,465
 
 
  
 
 
 
  
 
 
 
Change in plan assets is summarized below:
 
 
  
As at March 31,
 
 
  
2019
 
  
2020
 
Fair value of plan assets at the beginning of the year
  
₹
8,507
 
  
₹
9,443
 
Acquisitions
  
 
109
 
  
 
58
 
Expected return on plan assets
  
 
558
 
  
 
589
 
Employer contributions
  
 
254
 
  
 
383
 
Benefits paid
  
 
(34
) 
  
 
(95
) 
Remeasurement (loss)/gains
  
   
  
   
Return on plan assets excluding interest income - (loss)/gain
  
 
49
 
  
 
(76
) 
Translation adjustment
  
 
—  
 
  
 
233
 
 
  
 
 
 
  
 
 
 
Fair value of plan assets at the end of the year
  
₹
9,443
 
  
₹
10,535
 
 
  
 
 
 
  
 
 
 
Present value of unfunded obligation
  
₹
(1,042
) 
  
₹
(2,930
) 
 
  
 
 
 
  
 
 
 
Recognized asset/(liability)
  
₹
(1,042
) 
  
₹
(2,930
) 
 
  
 
 
 
  
 
 
Summary of Principal Assumptions Used for Purpose of Actuarial Valuation of Defined Benefit Plans
The principal assumptions used for the purpose of actuarial valuation of these defined benefit plans are as follows:
 
 
  
As at March 31,
 
 
  
2019
 
 
2020
 
Discount rate
  
 
6.05
% 
 
 
5.05
% 
Expected return on plan assets
  
 
6.05
% 
 
 
5.05
% 
Expected rate of salary increase
  
 
6.80
% 
 
 
6.60
% 
Duration of defined benefit obligations
  
 
8 years
 
 
 
9 years
 
Summary of Expected Future Contribution and Estimated Future Benefit Payments
The expected future contribution and estimated future benefit payments from the fund are as follows:
 
Expected contribution to the fund during the year ending March 31, 2021
  
₹
3,035
 
 
  
 
 
 
Estimated benefit payments from the fund for the year ending March 31:
  
   
2021
  
₹
1,740
 
2022
  
 
1,343
 
2023
  
 
1,295
 
2024
  
 
1,261
 
2025
  
 
1,226
 
Thereafter
  
 
13,819
 
 
  
 
 
 
Total
  
₹
20,684
 
 
  
 
 
 
Summary of Fund and Plan Assets of Provident Fund
The details of fund and plan assets are given below:
 
 
  
As at March 31,
 
 
  
2019
 
  
2020
 
Fair value of plan assets
  
₹
53,015
 
  
₹
61,397
 
Present value of defined benefit obligation
  
 
(53,015
) 
  
 
(61,397
) 
 
  
 
 
 
  
 
 
 
Net (shortfall)/ excess
  
₹
—  
 
  
₹
—  
 
 
  
 
 
 
  
 
 
 
Provident fund [member]  
Statement [LineItems]  
Summary of Principal Assumptions Used for Purpose of Actuarial Valuation of Defined Benefit Plans
The principal assumptions used in determining the present value obligation of interest guarantee under the deterministic approach are as follows:
 
 
  
As at March 31,
 
 
  
2019
 
 
2020
 
Discount rate for the term of the obligation
  
 
7.00
% 
 
 
6.05
% 
Average remaining tenure of investment portfolio
  
 
8 years
 
 
 
7 years
 
Guaranteed rate of return
  
 
8.65
% 
 
 
8.50
%