Small businesses, freelancers and shop owners need professional invoices without expensive software. A good invoice includes your business details, client info, item list, taxes and total — in a clean PDF you can email or WhatsApp to customers.
What a GST invoice should include
- Your business name, address, GSTIN (if registered)
- Client name and address
- Invoice number, date and due date
- Item description, quantity, rate, HSN/SAC
- SGST, CGST or IGST as applicable
- Subtotal, discount (if any) and grand total
Why use an online invoice generator?
- Fast — create invoice in minutes
- No install — works in browser on phone or laptop
- PDF download — share instantly
- Free — ideal for startups and side businesses
Master Calc Generate Invoice
On Master Calc, open Generate Invoice from the menu. Fill Bill From and Bill To, add items with tax %, set currency and download a polished PDF. Perfect for quick billing alongside our 75+ free calculators.
Need more than one-off PDFs?
For ongoing customer and invoice management, explore our Invoice CRM at Master Calc — login to manage businesses, customers and invoices in one place.
Disclaimer: Ensure your invoice format meets your business and GST compliance needs.