How to make a GST invoice
With BillEasy you can create a GST invoice in three steps: (1) fill in your business details and GSTIN, (2) add your customer and their state, and (3) add line items with quantity, rate and GST rate. The tool automatically calculates the taxable value, the tax split (CGST + SGST or IGST), the grand total and the amount in words, and renders a clean invoice you can download as a PDF or print.
What a GST invoice must contain
Under the GST law, a tax invoice issued by a registered supplier should generally include:
- Name, address and GSTIN of the supplier (your business).
- A unique, consecutive invoice number and the date of issue.
- Name, address and GSTIN of the recipient (if registered).
- HSN code for goods or SAC code for services.
- Description, quantity, unit and taxable value of each item.
- Rate and amount of tax split into CGST, SGST/UTGST or IGST.
- The total invoice value, and a signature or digital signature of the supplier.
CGST/SGST vs IGST — which one applies?
The tax split depends on the place of supply. For an intra-state sale (supplier and customer in the same state), the GST is split equally into CGST (Central GST) and SGST (State GST) — for example, 18% GST becomes 9% CGST + 9% SGST. For an inter-state sale (different states), a single IGST at the full rate applies instead. In BillEasy, just use the "Same state (CGST + SGST)" toggle to switch between the two.
Why BillEasy?
- Free & instant — no sign-up, no watermark, unlimited invoices.
- Private — everything runs on your device; nothing is uploaded.
- Professional PDF — a neat, business-grade A4 invoice with your logo.
- Works offline — install it to your home screen and bill on the go.
Frequently asked questions
Is this GST invoice generator really free?
Yes. BillEasy is completely free for unlimited invoices, with no sign-up and no watermark. The app is supported by ads.
Is my invoice data uploaded anywhere?
No. All calculations and PDF generation happen inside your browser on your device. If you choose "Save invoice", the data is stored only in your browser's local storage on that device.
How is CGST, SGST and IGST calculated?
For a same-state (intra-state) sale, each item's GST is split in half into CGST and SGST. For an inter-state sale, the full rate is charged as IGST. Use the toggle in the Items section to switch.
Can I add my company logo?
Yes. Upload a logo in the "Your business" section and it appears on the invoice preview and the downloaded PDF. The logo is stored only on your device.
What is HSN / SAC code?
HSN (Harmonised System of Nomenclature) codes classify goods, and SAC (Services Accounting Code) classify services, for GST. They are optional in BillEasy but recommended on GST invoices.
Can I download the invoice as a PDF?
Yes. Tap "Download PDF" for a clean A4 invoice. If you're offline and the PDF library can't load, BillEasy falls back to your browser's Print dialog, where you can also "Save as PDF".