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Batch Processing · 100% Client-Side
Bulk GSTIN Validator
Verify up to 50 GST numbers at once. Checks structural regex, checksum validity, decodes state names and embedded PANs, and exports results to CSV.
0 / 50 GSTINs entered
Total Processed 0
Valid GSTINs 0
Invalid GSTINs 0
Validation Breakdown
| # | GSTIN | Status | State | Extracted PAN | Entity Type |
|---|
Checking one number? Use the single GSTIN format validator. For live registration status, confirm the GSTIN on the official GST portal.
Frequently Asked Questions
How many GSTINs can I check at once in this bulk validator?
You can validate up to 50 GST numbers simultaneously in a single batch directly within your web browser.
Does this tool check live registration status on the GST portal?
No. It validates the 15-character structural format, 2-digit state code, embedded PAN, and the 15th-character checksum algorithm (ISO 7064 Mod 36, 36) completely offline without querying live government portal APIs.
Are my client or vendor GST numbers uploaded to any server?
No. All checksum algorithms and regex verifications run 100% locally in your device browser memory. No GST numbers or vendor lists are ever transmitted or stored.
Can I paste GSTINs directly from Excel or Google Sheets?
Yes. Simply copy a column of GST numbers from Excel, Google Sheets, or a CSV file and paste them into the input box. The tool automatically trims whitespace, ignores blank lines, and parses them.
How does the tool handle duplicate GSTINs in the batch?
Each entered GSTIN is validated in its original sequential order so that you can easily align and map results back to your source spreadsheet.
What does an invalid checksum warning indicate?
An invalid checksum indicates that the 15th check digit does not mathematically match the preceding 14 characters under the GSTN checksum formula, signifying a typo, transposed character, or fake number.
Can this tool detect invalid state codes?
Yes. The first two digits are verified against the official list of 2-digit Indian State and Union Territory GST codes (01 to 38, and 97/99). Unassigned codes are flagged immediately.
Does a structurally valid GSTIN guarantee that the taxpayer is currently active?
No. A structurally valid GSTIN confirms mathematical and format correctness. To verify whether the registration is active, cancelled, or suspended, verify the taxpayer on the official GST portal (gst.gov.in).
Can I export the batch validation results?
Yes. You can export a comprehensive CSV report containing the GSTIN, validity status, state name, embedded PAN, entity type, and detailed verification notes with one click.
What should I do if a vendor GSTIN fails validation?
Request a copy of the vendor's official GST Registration Certificate (Form GST REG-06) or verify their original invoice to rectify typographical errors before claiming ITC in GSTR-3B.