https://paytm.com/metro-card-re...ge
1. Promo Code: DELHIMETRO10 (10%)

~ Flat Rs.10 Cashback on min transaction of Rs.100. Applicable on Delhi metro only.
~ Code can be used 2 times in a month.

2. Promo Code: HYDMETRO10 (10%)

~ Flat Rs.10 Cashback on min transaction of Rs.100. Applicable on Hyderabad metro only
~ Code can be used 2 times in a month.

3. Promo Code: METRONEW (20%) : https://paytm.com/offer/met...w/

Offer Details:
Enjoy flat ₹20 Cashback on Metro Card Recharge
Transaction amount to avail this offer is ₹100
Promocode can be used only once per user and once per smart card number
Promocode is applicable for Delhi metro users
Please make sure to apply the promocode before clicking on ‘Proceed to Pay’
Cashback will be credited within 24 hours of a successful transaction into the user’s Paytm Wallet
We reserve the right to end any or all offers at our discretion without any prior notice
Cashback will not be processed for non-KYC users. Get your KYC done to receive Cashback. Please ignore if KYC is already done
This Cashback offer is being extended by One97 Communications Limited for using your Paytm Wallet on marketplace, run and operated by Paytm E-Commerce Private Limited. Paytm Wallet can be used for all transactions including shopping, recharges, utility bill payments, movie tickets, travel bookings and payments at stores accepting Paytm as a payment mode