<h1>New GSTR-1A Form Allows Taxpayers to Amend Supply Details Before Filing GSTR-3B, Available From August 2024.</h1> The government has introduced FORM GSTR-1A, an optional facility allowing taxpayers to amend or add details of supplies for a current tax period that were missed or incorrectly reported in FORM GSTR-1, before filing the GSTR-3B return. Available from August 2024, this form can be filed once per tax period. Amendments made through GSTR-1A will affect the taxpayer's liability in FORM GSTR-3B and will update the recipient's input tax credit in FORM GSTR-2B. For monthly and quarterly filers, specific timelines and conditions apply, with no separate amendment facility for certain interim filings.