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GST invoices that look professional, in two minutes.
Built for Indian freelancers and small businesses. Automatic CGST, SGST and IGST, GSTIN checks, the amount in words and a clean PDF. Your data never leaves your device.
- CGST / SGST / IGST
- Lakh & crore in words
- UPI + bank details
- 3 templates
| # | Description | HSN/SAC | Qty | Rate | Taxable | GST | Amount |
|---|---|---|---|---|---|---|---|
| 1 | E-commerce website build – milestone 2 of 3 (storefront and checkout) | 998314 | 1 | 60,000.00 | 60,000.00 | 18% | 70,800.00 |
| 2 | Payment gateway integration and testing | 998314 | 1 | 12,000.00 | 12,000.00 | 18% | 14,160.00 |
| 3 | Domain and SSL renewal (1 year, at cost) | 998315 | 1 | 1,500.00 | 1,500.00 | 18% | 1,770.00 |
| GST slab | Taxable | IGST |
|---|---|---|
| 18% | 73,500.00 | 13,230.00 |
Notes: Milestone 3 (go-live and handover) will be invoiced on launch.
Terms: Payment due within 15 days of invoice date.
How it works
From blank form to PDF in three steps
- 1
Add your details
Enter your business, GSTIN and bank details once. They are remembered in your browser for next time.
- 2
Add client and items
Pick the client's state and list your work with HSN/SAC and GST rate. Tax is calculated as you type.
- 3
Download the PDF
Choose a template, check the live preview and download a clean A4 PDF to send to your client.
Features
Everything a GST invoice needs, nothing it does not
Automatic CGST, SGST and IGST
Same state means CGST + SGST. Different state means IGST. No manual maths.
GSTIN validation
Catches wrong-length or malformed GSTINs and PAN before they reach a client.
Amount in words
Totals written in the Indian system: lakh and crore, with paise.
Three templates
Classic, Modern and Minimal, all print-ready on A4.
UPI and bank details
Put your UPI ID and bank account on the invoice so clients can pay immediately.
Private by design
No account, no server storage. Your invoices never leave your device.
Templates
Start from an invoice made for your work
- Web Developer
- Graphic Designer
- Photographer
- Content Writer
- Consultant
- Video Editor
- Tutor
- Social Media Manager
- SEO Specialist
- UI/UX Designer
- Translator
- Voice-Over Artist
- Interior Designer
- Event Planner
- Virtual Assistant
- App Developer
GST invoice format by state
Guides
GST, explained plainly
4 October 2026 · 7 min read
Invoice Payment Terms and How to Chase Late Payments
How to set payment terms that get you paid on time, what to write on the invoice, a reminder schedule with sample messages, and your legal options in India.
2 October 2026 · 6 min read
HSN vs SAC Codes: A Practical Guide for Small Businesses
HSN codes classify goods, SAC codes classify services. Learn how many digits you need, how to find the right code, and the SAC codes freelancers use most.
29 September 2026 · 6 min read
How to Invoice International Clients: LUT and Export of Services
Invoicing a client abroad from India: what counts as an export of services, how a Letter of Undertaking works, what to put on the invoice, and how to prove payment.
Frequently asked questions
Is BillBuddy free?
Yes, completely. There are no accounts, limits or watermarks.
Do I need to sign up?
No. Open the generator, fill in the form and download your PDF.
Is my data safe?
Your data stays in your browser. BillBuddy has no database and does not upload your invoices. A draft is saved in your browser's local storage so you can come back later.
Is the invoice GST compliant?
The PDF includes the fields required on a tax invoice: supplier and recipient details, GSTIN, invoice number and date, HSN/SAC, taxable value, tax rate and amount, place of supply and total. BillBuddy is a tool, not tax advice, so check with your accountant for your situation.
Can I use it if I am not GST registered?
Yes. Leave the GSTIN blank and set the GST rate to 0% to produce a plain invoice or bill of supply.