Free GST Invoice Generator
for Australian Freelancers
Create professional, GST-compliant invoices in seconds. FluxInvoice automatically calculates your 10% GST, uses AUD currency, and generates watermark-free PDFs — no sign-up, no monthly fees, no data stored on any server.
No account needed. Instant PDF download.
Auto GST Calculation
Enter your subtotal and FluxInvoice automatically calculates the 10% GST and adds it to your invoice total.
AUD Currency by Default
Invoices are pre-configured with Australian Dollars. No fiddling with currency settings required.
100% Private & Offline
Your client data and financial information is never sent to any server. Everything runs in your browser.
Professional PDF Export
Download a clean, watermark-free PDF invoice instantly. Ready to email to your Australian or international clients.
DD/MM/YYYY Date Format
Invoices use the correct Australian date format (18 Jun 2026), not the confusing US format.
Completely Free Forever
FluxInvoice is 100% free. There is no premium plan, no watermarks, and no credit card required. Ever.
Common Questions
Do I need to register for GST to use this invoice?
If your annual turnover is under $75,000 AUD you are not required to register for GST. You can use FluxInvoice to create standard invoices without the GST line. If you are registered, simply enter 10% in the GST rate field.
Is FluxInvoice compliant with ATO requirements?
FluxInvoice generates tax invoices with all the information required by the ATO: your business name, ABN field (enter it in the VAT/Tax ID field), the total GST amount, and a clear description of goods or services.
Can I save my invoices?
Yes! FluxInvoice automatically saves your invoice data to your browser's local storage. You can also download a PDF copy at any time and your invoice history is stored in the History tab.