Convenience Charges/ Transaction Charges/ TDR (Transaction Discount Rates) are the charges that you pay for every transaction processed using a payment gateway. The rate may vary based on the payment mode used by the customer.
ADDA is integrated with top Payment Gateways that offer a balance of Reliable Technology and competitive Convenience charges.
This is an unavoidable charge for online payments using Credit Card / Debit Card / Netbanking.
You don't see this charge in Amazon, Flipkart and other e-commerce apps as the Seller absorbs this cost. In the case of Societies/Associations these charges are typically passed on to the Payer (Resident).
If you would like to pay online on ADDA without incurring any convenience charges, you could use the UPI method as it has zero convenience charges (subsidised by govt.)
Here are the convenience charges for various methods: