Free tools
All seven run entirely in your browser. Nothing you type is sent to a server, there is no signup, and none of them will ask for your email before showing you the answer.
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GST invoice generator
Build a Rule 46 tax invoice at the rates in force and print it or save it as a PDF. Works out CGST and SGST or IGST from the place of supply.
Anyone who needs one invoice right now
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GST calculator
Add GST to a price or extract the GST already inside a total, at the GST 2.0 rates, with the tax split shown either way.
Quoting, checking a supplier bill
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MSE payment deadline checker
See which payables to micro and small suppliers put your tax deduction at risk under section 43B(h) or section 37(2)(g).
Buyers closing the books in February and March
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Late payment interest calculator
Work out the statutory interest owed under section 16 of the MSMED Act, from the correct 15- or 45-day deadline.
Micro and small suppliers chasing payment
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GSTIN validator
Check a GST number’s pattern, state code and checksum. Catches typos before they reach an invoice.
Adding a new customer or supplier
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Invoice number generator
Design a numbering series and check it against the sixteen-character limit and the characters Rule 46 permits.
Setting up at the start of a financial year
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Payment reminder writer
Draft a reminder at one of three escalation levels, from a gentle nudge to a formal notice citing the statutory position.
The invoice that has gone quiet