S. 36(1)(va) :Contribution approved gratuity fund -Employer’s contribution is allowable as deduction if the payment is made before due date of filing of return u/s 139(1)- Deduction in respect of employees’ contribution to ESI and EPF is available only if same is paid within due date as specified under relevant statutes.[ S. 2(24)(x), 43B , 139(1) ]