GST Knowledge Hub

Everything you need to know
about Australian GST

In-depth guides on registration, BAS lodgment, invoicing, input tax credits, and more. All written specifically for Australian businesses.

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All GST guides10

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Flowchart showing the 3-step GST registration process with ATO: check turnover threshold, apply via ABN portal, receive GST registration confirmation
finance5 Apr 2026

How to Register for GST in Australia (2026 Guide)

Step-by-step guide to registering for Australian GST. Learn when you must register, how to apply through the ATO, and what happens after registration.

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Comparison table of Australian GST supply categories: taxable supplies at 10 percent, GST-free supplies at 0 percent, and input-taxed supplies with no GST charged
finance5 Apr 2026

What Items Are GST-Free in Australia? Complete List

A complete guide to GST-free supplies in Australia. Find out which goods and services carry no GST, including food, medical services, and exports.

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Quarterly BAS calendar showing four lodgment periods with ATO due dates for Australian small businesses
finance5 Apr 2026

How to Lodge Your BAS: Step-by-Step for Small Business

Learn how to lodge a Business Activity Statement (BAS) in Australia. Covers quarterly deadlines, what to report, and how to pay or claim your GST refund.

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Annotated layout of a compliant Australian GST tax invoice showing required fields: Tax Invoice header, ABN, date, description, GST amount, and total
finance5 Apr 2026

How to Write a GST Invoice: Australian Requirements

Everything Australian businesses need to know about tax invoices. Covers required fields, invoice amounts, abridged invoices under $1,000, and common errors.

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Diagram showing the two Australian GST formulas: adding GST (multiply by 1.10) and removing GST (divide by 1.10) with worked dollar examples
finance5 Apr 2026

The Australian GST Formula Explained (With Examples)

Learn the exact formulas for adding and removing 10% Australian GST. Includes worked examples, the divide-by-11 shortcut, and why rounding matters.

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Diagram showing how input tax credits work: GST collected on sales minus GST credits on purchases equals net GST payable to ATO
finance5 Apr 2026

How to Claim GST Input Tax Credits on Business Expenses

Learn when you can claim GST input tax credits on Australian business purchases. Covers eligibility rules, tax invoice requirements, partial credits, and BAS reporting.

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Decision flowchart for Australian GST registration: check turnover, compare to $75,000 threshold, decide voluntary vs mandatory registration
finance5 Apr 2026

The $75,000 GST Threshold: When You Must Register

Understand the Australian GST registration threshold of $75,000. Learn how to calculate your GST turnover, what counts, and when voluntary registration makes sense.

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Grid showing the 8 most common Australian GST mistakes businesses make, from late registration to incorrect BAS lodgment
finance5 Apr 2026

8 Common GST Mistakes Australian Businesses Make

Avoid the most frequent Australian GST errors. From late registration to misclassifying supplies, these mistakes cost businesses money. Here's how to fix them.

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Comparison chart showing GST treatment of three property types in Australia: new residential (taxable), existing residential (input-taxed), and commercial (taxable)
finance5 Apr 2026

GST on Property in Australia: What Buyers and Sellers Need to Know

A plain-English guide to GST on Australian property. Covers new residential premises, commercial property, the margin scheme, and going concern sales.

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Timeline diagram showing Australian GST on imports: 2017 digital services, 2018 goods under $1000, and current rules for overseas sellers
finance5 Apr 2026

GST on Imported Goods and Online Purchases from Overseas

Learn when Australian GST applies to overseas purchases. Covers the $1,000 threshold changes, digital services, cross-border GST rules, and how to claim credits.

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