GST Invoice Format India — Mandatory Fields & Free Generator
If you issue GST invoices in India, your bill should include specific details so buyers and accountants can process it without confusion. invoizzy helps you create GST invoices in under 30 seconds with no signup, auto CGST/SGST/IGST calculation, WhatsApp sharing, and instant PDF download.
Mandatory GST invoice fields in India
Use this checklist before sharing any invoice with your customer:
| Field | Why it is required |
|---|---|
| Invoice number and date | Unique tracking and statutory record keeping. |
| Seller legal name, address, GSTIN | Identifies supplier and tax registration details. |
| Buyer details (and GSTIN where applicable) | Needed for B2B credit claims and proper documentation. |
| Item/service description with HSN/SAC | Classifies goods/services for tax rates and compliance. |
| Quantity, rate, taxable value | Forms the base for GST calculation and totals. |
| CGST/SGST or IGST breakup | Shows tax treatment for intra-state vs interstate supply. |
| Grand total and declaration | Final payable amount and invoice completeness. |
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