GST Invoice Template
Goods and Services Tax (GST) is the backbone of indirect taxation in some of the world's most dynamic economies, from Australia and Canada to New Zealand, Singapore, and India. If your business is registered for GST in any of these jurisdictions, you are legally required to issue tax invoices that correctly show the GST you have collected on behalf of the tax authority. A GST invoice template is your tool for creating compliant, professional documents that satisfy both your clients and your tax authority's reporting requirements—without requiring you to become a tax expert.
Eonebill's free GST invoice template is designed to handle the nuances of multiple GST systems, whether you operate under Australia's 10% GST, Canada's combined HST system, New Zealand's 15% GST, Singapore's 9% GST, or India's multi-rate CGST/SGST framework. It provides clearly labeled fields for your GST registration number, the client's GST ID (where required), GST rate breakdowns, and GST-free supply notations. Download it today and get your GST invoicing right from the first invoice.
What Is a GST Invoice?
A GST invoice is a document issued by a GST-registered business to a buyer that records a taxable supply of goods or services and specifies the GST collected on that supply. It is the legal instrument that enables businesses to claim input tax credits (the GST paid on their own purchases) and that allows tax authorities to verify that GST collected on sales has been properly remitted.
The structure of a GST invoice is similar to a VAT invoice but with country-specific fields and terminology. The core requirements across most GST jurisdictions include:
- The supplier's business name, address, and GST registration number
- The recipient's business name and address (and GST registration number for B2B transactions in most jurisdictions)
- A unique invoice number
- The date of the invoice and, in some cases, the date of supply
- A description of the goods or services
- The quantity and unit price
- The GST-exclusive subtotal
- The GST rate applied and the GST amount
- The total amount including GST
One important distinction that varies by GST jurisdiction is whether B2B transactions require the buyer's GST number and whether they are zero-rated or exempt. In Australia, for example, most B2C and B2B supplies are taxable at the same rate, with input tax credits claimed through the BAS (Business Activity Statement). In Canada, B2B supplies are generally zero-rated (0% GST) when the buyer is registered for GST and will use the inputs in their own taxable supply chain.
How to Create a GST Invoice
Creating a compliant GST invoice requires understanding your specific jurisdiction's rules. Here is a general guide that applies across most GST systems.
Step 1: Confirm Your GST Registration
Only a GST-registered business can issue a GST invoice. Your GST registration number (e.g., ABN in Australia, GST/HST account number in Canada, IRD number in New Zealand) must appear on every GST invoice. If you are not registered—or if your turnover is below the registration threshold—you generally cannot charge GST and must not issue GST invoices.
Step 2: Classify Your Supplies
Before invoicing, classify each item you are selling as either taxable, GST-free, input-taxed, or exempt. The classification determines how GST appears on the invoice. Common GST-free items in Australia include basic food, medical services, educational courses, and exported goods. If an item is GST-free, you show its full value but charge no GST and note it as "GST-free."
Step 3: Determine the Correct Rate
Each GST jurisdiction has its own rate structure. Australia's general rate is 10% on most taxable supplies. New Zealand's is 15%. Singapore's is 9% (as of 2024). Canada's federal GST is 5%, but when combined with provincial HST it can range from 13% to 15%. India uses a multi-rate system (5%, 12%, 18%, 28%). Apply the correct rate to each line item.
Step 4: Show the GST Calculation
On the invoice, display the pre-GST subtotal, the GST rate and amount, and the total including GST. If you have items at different rates or GST-free items, group them separately. Eonebill's template handles this automatically.
Step 5: Include Required Additional Information
Some jurisdictions require additional information on GST invoices:
- Australia: ABN (Australian Business Number) for both parties. Note whether the total includes GST.
- Canada: GST/HST number for both parties. For HST provinces, state the combined rate. For provinces with separate PST, show both GST and PST.
- New Zealand: GST number for both parties. Note "Zero-rated supply" for B2B exports if applicable.
- Singapore: GST registration number. As of 2025, e-invoicing is mandatory for certain businesses under Singapore's PEPPOL-based system.
Step 6: Retain Records
GST law in most jurisdictions requires you to retain GST invoices (both those you issue and those you receive) for a minimum period—typically 5 to 7 years. Maintain digital copies in a format that can be produced for a tax audit.
Key Elements of a GST Invoice
Supplier Business Name and Address: Your legal business name and principal place of business as registered with the tax authority.
Supplier GST Registration Number: Your GST, ABN, IRD, or equivalent registration number. This is mandatory on all GST invoices.
Buyer Business Name and Address: For B2B transactions in most GST jurisdictions, the buyer's registration number is also required.
Invoice Number: A unique, sequential identifier required for audit trails and GST reporting.
Invoice Date: Date the invoice is issued.
Date of Supply (if required): Some jurisdictions require the supply date, which may differ from the invoice date for advance payments.
Description of Goods or Services: Clear descriptions sufficient to classify the supply for GST purposes.
Quantity and Unit Price: Standard invoice elements.
GST-Exclusive Amount: Total before GST is added.
GST Rate and Amount: The percentage rate and calculated GST for each rate category.
GST-Free Notation: For GST-free items, clearly mark them as "GST-free."
Total Including GST: The final amount payable.
Currency: State the currency clearly (AUD, CAD, NZD, SGD, INR, etc.).
Sample GST Invoice Example
Here is an example of a GST invoice from an Australian business:
Business: Melbourne Digital Marketing Pty Ltd
45 Collins Street, Melbourne, VIC 3000, Australia
ABN: 12 345 678 901
Bill To: Adelaide Retail Group Pty Ltd
88 Rundle Mall, Adelaide, SA 5000, Australia
ABN: 98 765 432 109
Invoice No.: INV-2026-078
Date: April 14, 2026
Due: May 14, 2026 (Net 30)
Line Items:
| Description | Qty | Unit Price (AUD) | Total (AUD) |
|---|---|---|---|
| Monthly SEO Services (April 2026) | 1 | $2,500.00 | $2,500.00 |
| Google Ads Management | 1 | $950.00 | $950.00 |
| Content Writing (4 blog posts) | 4 | $350.00 | $1,400.00 |
Subtotal (Ex GST): $4,850.00
GST (10%): $485.00
Total Amount (Incl. GST): $5,335.00
Payment: Bank transfer to Melbourne Digital Marketing Pty Ltd, BSB: 123-456, Account: 78901234. Reference: INV-2026-078.
This GST invoice example clearly shows the pre-GST amount, the GST component, and the total payable, meeting all Australian GST invoicing requirements.
Related GST Invoice Templates
Find the right GST invoice template for your region and industry:
- Professional Services GST Invoice — For consultants and service providers in GST jurisdictions
- Consulting GST Invoice — For business consultants in Australia, Canada, NZ
- Construction GST Invoice — For builders and contractors
- Retail GST Invoice — For product retailers
- Accounting GST Invoice — For financial services firms
Get Started with Your GST Invoice Template
Whether you are an Australian business remitting GST through the BAS, a Canadian company navigating HST and PST complexities, or a New Zealand or Singapore operator meeting mandatory e-invoicing requirements, Eonebill's free GST invoice template gives you a professional, compliant foundation. Download it today and invoice with complete confidence.
Download the Free GST Invoice Template Now and ensure your GST compliance across every jurisdiction.