Paytm - Flat 14% Cashback on Recharges & Bill Payments. Get flat 14% cashback on recharges and bill payments. Use the coupon code to avail this offer. Maximum cashback is Rs. 100. Code can be used only once per user. Code is valid on prepaid, postpaid, DTH, landline, electricity bill payments. A number can be recharged only once. Cashback will be credited within 24 hours of the transaction into user’s Paytm wallet. Code is not valid on Airtel prepaid, postpaid, DTH, landline, electricity bill payments. Valid for all users. Valid on web and app.