From Feb 2026 onwards, the “Tax Liability Breakup, As Applicable” tab on the GST Portal must be opened and saved on the payment page before filing GSTR-3B.
Portal auto-populates liability of earlier period supplies reported in GSTR-1 / GSTR-1A / IFF.
Currently, confirmation is required in all cases due to a system issue.
Until fixed, taxpayers should simply open the tab and click SAVE to proceed with filing.
