Build a GST Invoice Generator in 80 Lines of Python

If you're a freelancer, consultant, or small business owner in India, you've probably paid ₹500–₹2000/month for invoicing software you barely use. After helping a CA friend automate his client billing last week, I wrote a clean GST invoice generator in 80 lines of Python . It handles HSN codes, CGST/SGST split for intra-state, IGST for inter-state, and outputs a professional PDF — all from a simple dictionary input. This is the same script I now use to invoice my own automation consulting client