I am a tour operator, selling tour packages,gst @ 5%.
Let me put it up different way now.
Say my cost of *package* is - 100000
i sell to customer at 100000+5%=105000
Selling price=105000
Now i give him payment gateway link,for which payment gateway charges-1000+18% gst on making this payment.
1000 goes as expense/bank charges, *can I claim 180Rs as input credit, against package of 5% service??