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GSTTools

Free, instant GST tools for Indian businesses and taxpayers. Calculate GST, look up HSN/SAC codes, and validate GSTIN numbers — all offline, no login required.

Disclaimer: This website is for informational purposes only. Always verify with the official GST portal at gst.gov.in.

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GSTR 1 Json to Excel
GST Error Report
GSTR 1 JSON Validator
Merge Excel Files
GST Calculator
GST Registration Checker
Advance Tax Calculator
Place of Supply Calculator
HSN Code Lookup
GSTIN Validator
Late Fee Calculator
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GSTR-2B Reconciliation Tool
GST State Codes
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GST data is indicative. Rates subject to change per Government of India notifications.