Free Tool · Instant
GST Error Report
Upload your sales/invoice register and catch GST filing mistakes before the portal does — invalid GSTINs, gaps in invoice numbering, duplicates, wrong rates and more.
Upload Sales / Invoice Register
Click to upload or drag & drop
.xlsx, .xls or .csv — needs invoice no, date, GSTIN (optional), taxable value, rate columns
Your file is processed entirely in your browser — nothing is uploaded to any server.
Checks this tool runs
GSTIN format & checksum validation · duplicate invoice number detection · invoice numbering gap detection · negative or zero taxable value · invalid GST rate (must be one of 0, 0.25, 3, 5, 12, 18, 28%) · missing HSN code · missing or unrecognised place of supply state · CGST/SGST/IGST vs taxable value × rate mismatch beyond ₹1 rounding tolerance.