Free tools for Indian businesses
No signup, no limits. Answer a GST question in seconds.
GST Calculator
Add or remove GST from any amount, with the CGST/SGST split shown.
Open toolReverse GST Calculator
Work backwards from a tax-inclusive price to the taxable value.
Open toolHSN / SAC Code Finder
Search HSN codes for goods and SAC codes for services.
Open toolGSTIN Validator
Check any GSTIN's format, checksum and state in one step.
Open toolInvoice Number Format Guide
What a GST-legal invoice series must look like.
Open tool