new delhi aug 18 gst tax portal is likely to offer from tomorrow forms to claim credit on sales made before the rollout of gst which the taxpayers have to file by august 28 a government official said today as gst return forms did not have a column for claiming transitional input credit the government yesterday gave some breather to such taxpayers by giving them an extra week till august 28 to file returns these taxpayers will however have to pay taxes by august 20 on the portal of the gst network gstn the it infrastructure provider for the new indirect tax regime while gstr 3b is the form for filing gst return trans i is the form in which the businesses will have to give the details of credit that they are claiming for payment of taxes before the rollout of gst the transitional form is almost ready and we are working to upload it by tomorrow so that businesses can start filing trans i a senior revenue department official said yesterday the finance ministry had said the trans i form will be available on the gstn website from august 21 giving relaxation to the businesses that need to claim transitional input tax credit the ministry yesterday allowed them to deposit taxes on the basis of selfassessment by august 20 but gave them one more week till august 28 to file return the taxpayers who do not claim any transitional input tax credit will have to necessarily pay tax and file return in form 3b before the due date of august 20 over 7130 lakh excise service tax and vat payers have migrated to the gstn portal also 15 lakh fresh registrations have happened on the portal for an easy compliance the gst council has allowed businesses to initially file their returns on selfassessment basis in the first two months of the gst rollout so gst returns for july and august will be filed on gstn portal by filling gstr 3b form return filing commenced on august 5 jd anu