The new return system under GST has introduced several concepts, one of them being the mechanism to upload invoices in real-time. With this feature, suppliers will no longer have to wait until the end of the month to submit invoices to the GSTN. Likewise, a recipient of supplies can keep track of input tax credit that can be claimed, almost instantly, once a transaction has taken place. This is, of course, subject to vendors uploading their invoices on time.