Solution - use kotak gateway on IT website when paying using AZ ICICI as confirmed by
@Copycat and
@Ash8
Did another tax payment yesterday on IT website and got reward points using AZ ICICI. I am charged 0.8% in total above the transaction amount and therefore it should also include GST component as well. Got the merchant name of Tin 2.0
I am not able to mark this as solution....