<h1>Taxpayers can use the Invoice Furnishing Facility under QRMP to report B2B invoices for the first two months of a quarter.</h1> The Invoice Furnishing Facility (IFF) under the QRMP Scheme allows taxpayers to file B2B invoice details for the first two months of a quarter. This facility, similar to Form GSTR-1, includes sections for B2B invoices, credit/debit notes, and amendments. Taxpayers can upload these details until the 13th of the subsequent month. The IFF is optional and aids in passing Input Tax Credit to recipients, with mandatory filing of Form GSTR-1 for the third month of the quarter. Details uploaded in IFF appear in the recipient's Form GSTR-2A/2B and need not be refiled in the quarterly GSTR-1.