This discussion addresses how to report non-sequentially numbered invoices in Table 13 of GSTR-1 when using a centralised billing system. The advice provided is to list every invoice exactly as generated by your system, even if there are gaps or the numbers aren't in a strict sequence. As long as each invoice number is unique and ascending, and no invoices from the period are omitted, this is acceptable for GST reporting and audit trails.
01 September 2025
Hello, A particular client of mine has a centralised billing system which makes the invoice numbering out of his hands. How should i report those non-sequencial yet ascending invoices in Table 13 of GSTR-1. Please advice.
02 September 2025
List every document issued in the relevant period, entering invoice numbers exactly as generated by your centralized system—even if gaps exist in numbering or numbers do not run in a strict sequence as long as each number is unique and ascending. The GST system and audit trail expect the actual numbers assigned, so do not manually reorder or renumber any invoice for the sake of sequence. Ascending but non-continuous numbers are acceptable; just ensure no invoices issued in the period are omitted from Table 13. Invoice numbering is controlled by centralized software, and any gaps or non-sequential patterns are systemic, not manual.