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GST-compliant PDF invoice in 60 seconds — no signup
3 free invoices remaining this month
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Generating a legally compliant GST invoice involves more than filling in a few fields — it requires correct CGST/SGST/IGST split based on the buyer-seller state relationship, accurate HSN code assignment, and proper sequential invoice numbering. Built for Indian freelancers, agencies, and small businesses under the GST Act 2017, this tool handles the tax split automatically so you can issue audit-ready invoices in under a minute.
When you enter the seller and buyer states, the tool detects whether the transaction is intra-state (same state) or inter-state. For intra-state supplies, GST is split equally into CGST and SGST. For inter-state supplies — including exports — IGST at the full rate applies. Tax rates are auto-populated from the HSN code database; you can also enter a custom rate.
Line items are totalled, tax is calculated per line, and the invoice footer shows CGST, SGST (or IGST), total taxable value, and invoice total. The amount-in-words field is generated automatically using the Indian numbering convention (lakhs and crores).
PDF generation happens entirely in your browser using a print-optimised layout that matches the GST invoice format prescribed under Rule 46 of the CGST Rules 2017.
A Bengaluru-based web agency raising an invoice for a client in Delhi — IGST applies at the full rate, not CGST/SGST split.
A freelance consultant billing a Mumbai client from their Mumbai GSTIN — CGST and SGST each at 9% for an 18% service.
A small retailer creating multiple product-line invoices with different HSN codes and mixed GST slabs on a single document.
A bootstrapped SaaS founder who cannot afford accounting software generating their first 3 invoices under the free plan.
Scope note: Generates standard B2B and B2C tax invoices under the GST Act 2017. Does not support e-invoicing (IRP JSON generation for businesses with turnover above Rs 5 crore) or e-way bill creation. Reverse charge mechanism (RCM) must be manually annotated. Always verify HSN codes and tax rates with a tax professional before large-value invoices.
Disclaimer: This calculator is for informational and educational purposes only and does not constitute financial, tax, or legal advice. Results are estimates based on publicly available tax slabs and formulas. Consult a qualified Chartered Accountant, tax professional, or financial advisor for guidance specific to your situation. Built and maintained by the WOWHOW Team with 14+ years of software development experience.
Enter your business details — name, GSTIN, address, and state
Add customer details and select their state for auto tax calculation
Add line items with HSN codes (auto-suggest), quantity, and rate
Download your GST-compliant invoice as PDF instantly
About the GST Invoice Generator
You can generate up to 3 invoices per month for free — no signup required. For unlimited invoices and premium features like custom branding, upgrade to Pro starting at ₹199/month.
If the seller and buyer are in the same state, CGST + SGST is applied. For inter-state transactions, IGST is applied. Tax rates are auto-detected from the HSN code.
All data stays in your browser. Nothing is uploaded to any server. Your invoices are generated entirely on your device.
Yes. Upload your logo and it will appear on the invoice. The image never leaves your browser.
HSN (Harmonized System of Nomenclature) is an internationally standardized product classification code. Businesses with turnover above Rs 5 crore must use 6-digit HSN; between Rs 1.5-5 crore, 4-digit; below Rs 1.5 crore, HSN is optional but recommended for accurate GST rate matching.
Issue a credit note referencing the original invoice number and date. In GSTR-1, credit notes are reported separately in the credit/debit note section. The recipient must adjust ITC accordingly in their GSTR-2B. This tool generates the original tax invoice — consult your accountant for credit note formats.
Free plan invoices are generated on-demand and are not stored on any server. With Pro, invoices are saved in your browser storage so you can revisit and re-download them. For long-term archiving, always save the PDF locally.
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