GSTR-1 looks simple until you have 4,000 invoices a month and one of them mismatches.
The 7 Most Common GSTR-1 Filing Mistakes (And Fixes)
Every accountant has seen these. Here's a checklist to catch them before your filing window closes.
Frequently Asked Questions
When is the GSTR-1 deadline?
11th of the following month for monthly filers, 13th of the month after the quarter for QRMP. Late filing draws ₹50/day late fee plus interest.
Can I revise GSTR-1 after filing?
You can't edit a filed GSTR-1, but you can amend invoices in the next month's filing using Table 9. Plan for that, don't panic.
Does GSTN auto-detect mismatches?
Yes — mismatches between your GSTR-1 and your buyers' GSTR-2B trigger automatic reconciliation flags. Catch them before filing instead of after.