Niki App offers 20% Cashback on Water Bill Payment, with Maximum Cashback of upto Rs. 100. ashback Amount will be credited to your Niki Account, which can be further used for subsequent orders on services of Niki. Your Niki credits will be upto 25% of your transaction amount and will be applied automatically. You will have to pay for the remaining transaction amount. Check the Offers Section at the bottom of the Niki Website to know more about the Terms and Conditions, Download App Today!