we issued a invoice with 18% gst to client in January 2021. we show invoice in gstr1 with 18%. client made payment basic amount with gst 5% in April 2021. he says that he take itc of 5%due to mistake. our 13% gst amount on hold . we reminding customer to pay balance amount. now they reconcile it. now September returns filed. how can client claim itc of difference amount & make payment to us. what can we do?
I think your client can't hold you responsible for her/his mistakes. Moreover, ITC is availed on the basis of invoice from the supplier and not on the basis of payment by the buyer to the seller.