Paytm Metro Card Recharge is Live - Get 5% cashback on Metro Card Recharge by Using the code. This Code can be Used 3 times per User. Maximum cashback of Rs 50 can be availed per Transaction. This is valid only on Mumbai Metro. This Cash back will be credited within 24 hours of the transaction into the user's Paytm account. A card can be recharged only 3 times using this Code. Recharge now. This is Valid for all Users. Valid on Web and App.