If I purchase goods for 100000 n sold it for 105000 but the purchaser to whom I sold the goods for 105000 know that i purchased it for 100000 so he demands additional discount of 2500 that is the part of profit. then what's the treatment for this in Gst. if bill is already generated n eway is generated for 105000.
If You have charged Sale Amount 1,05,000 + GST Amount on Sale Invoice. now for giving discount you should issue credit note 2,500 + GST Amount or you can use reverse calculation method for giving discount 2,500/-.
Okay, This solution was useful for service sector.
In your case, If you want to pay 2,500/- as discount then you can ask him for invoice, which will be generated by him. if he issued invoice of Rs. 2,500 + GST, then you will pay that amount & avail ITC.
Reverse calculation means Rs. 2,500/- is GST included value.