<h1>GST Filing Deadlines Extended Due to Technical Issues; New Dates for GSTR-1 and GSTR-3B Announced.</h1> The government has extended the deadline for filing monthly GST sales return form GSTR-1 and GST payment by two days due to technical issues in the GSTN system. The new deadline for filing GSTR-1 for December is January 13, and for quarterly taxpayers under the QRMP scheme, it is January 15. The deadline for GST payment via GSTR-3B for December is now January 22, with quarterly payments extended to January 24 and 26, depending on state registration. The GST Network reported these issues to the Central Board of Indirect Taxes and Customs and is working to resolve them.