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 tool →Reverse GST Calculator
Work backwards from a tax-inclusive price to the taxable value.
Open tool →HSN / SAC Code Finder
Search HSN codes for goods and SAC codes for services.
Open tool →GSTIN Validator
Check any GSTIN's format, checksum and state in one step.
Open tool →Invoice Number Format Guide
What a GST-legal invoice series must look like.
Open tool →