What Is GST in Australia?

If you’re starting or running a small business in Australia, Goods and Services Tax (GST) is one acronym you’ll see everywhere - on invoices, in your BAS, and in conversations with your bookkeeper or accountant.

Understanding what GST means, when you need to register, and how to handle it day-to-day will help you price correctly, stay compliant, and avoid surprise bills.

In this guide, we’ll explain GST in simple terms, answer the most common small business questions, and outline practical steps so you can manage your GST obligations with confidence.

What Does GST Mean In Australia?

GST stands for Goods and Services Tax. It’s a broad-based 10% tax on most goods and services sold or consumed in Australia.

When you’re registered for GST, you generally add 10% to the price of your taxable sales, collect that amount from your customers, and periodically send it to the Australian Taxation Office (ATO) via your Business Activity Statement (BAS).

What % Is GST?

GST is 10% in Australia. If an item or service is “taxable”, you add 10% to its pre-GST price. For example, a $100 service becomes $110 including GST.

Who Pays GST?

Your customers ultimately pay GST as part of the price. As the seller, you collect it on the ATO’s behalf and report it in your BAS. You can also claim credits for the GST you pay on business purchases (called input tax credits), so you only remit the net amount.

What Does GST Do For Your Business?

At a practical level, GST affects how you price, invoice, and report. It shapes the wording on your invoices, the way your point-of-sale shows prices, and your cash flow rhythm around BAS time. Getting it right builds trust with customers and reduces compliance risk.

Do I Need To Register For GST?

Many small businesses ask this early - for good reason. Registering has clear implications for pricing, invoicing and admin workload.

GST Registration Threshold

• If your business has a GST turnover of $75,000 or more (projected or actual) in a 12-month period, you must register for GST.
• For non-profits, the threshold is $150,000.
• Some industries (e.g. ride-sourcing) must register regardless of turnover.

If you’re unsure about your position or whether you meet the threshold, it’s wise to review your revenue forecasts and speak with a qualified advisor early.

ABN And Business Structure

You’ll need an Australian Business Number (ABN) to register for GST. When planning your setup, consider whether you’ll operate as a sole trader, partnership, or company. Many founders eventually incorporate for growth and liability reasons, while others start as sole traders and evolve later. To understand the practicalities of registering and trading, it helps to weigh up your ABN obligations alongside your broader structure and, if you’re ready, move ahead with a company set up.

Voluntary Registration

You can voluntarily register even if you’re under the threshold. This lets you claim input tax credits on your business purchases, but it also means you must charge and report GST on your taxable sales. Voluntary registration can make sense if you have significant setup costs, sell mainly to GST-registered businesses (who can claim credits), or want to look established to B2B clients.

What Sales Are Taxable, GST‑Free Or Input Taxed?

Not every sale attracts GST. Getting the category right determines whether you add 10% to your price and whether you can claim credits.

Taxable Sales (Most Common)

Most goods and services you sell are taxable. You charge 10% GST, issue a compliant tax invoice, and report it in your BAS.

GST‑Free Sales

Certain items are GST‑free (0% GST) - for example, some basic foods, certain health and education services, and exports. You don’t charge GST, but you usually can still claim credits for related business purchases.

Input Taxed Sales

Some sales (like most financial supplies and residential rent) are input taxed. You don’t charge GST, and you generally cannot claim credits for purchases that relate to these sales.

Exports And Imports

Exports are typically GST‑free if the goods leave Australia within the required timeframes. Imports are different: GST is usually payable at the border (or via deferred GST) based on the customs value of the goods. If importing is part of your model, be clear on how GST on importation works so you can manage cash flow and eligibility for credits.

How Does GST Work Day-To-Day?

Once you’re registered, the routine comes down to invoicing, record-keeping and BAS reporting.

Pricing: Display And Include GST

If you sell to consumers, the Australian Consumer Law requires that displayed prices are the total price payable - that means including GST in the advertised price. For B2B sales, it’s common to show prices “ex GST” and then specify the GST amount and total payable at checkout or on the invoice.

Invoicing: Tax Invoice Requirements

When you make a taxable sale of $82.50 or more (including GST), customers can ask for a tax invoice. A valid tax invoice generally includes:

• Your business name and ABN
• The invoice date and a unique invoice number
• A clear description of the goods/services
• The GST amount for each item or a statement that the total includes GST
• The total price payable

It’s a good idea to standardise your template, keep your invoice payment terms consistent, and ensure your systems can easily generate compliant tax invoices.

Recipient Created Tax Invoices (RCTIs)

In some industries, your customer may issue the invoice on your behalf (for example, marketplaces or certain supply arrangements). These are called RCTIs. You’ll need a written agreement that meets ATO conditions and processes that align with your BAS reporting.

Cash vs Accrual Accounting For GST

You can account for GST on a cash basis (when you receive or pay cash) or an accrual basis (when you invoice or are invoiced). Many small businesses prefer cash basis because it better matches GST payments to actual cash flow, but your choice should suit your operations and software.

Claiming Input Tax Credits

You can claim credits for GST included in the price of goods and services you buy for your business (if you hold tax invoices and the purchases relate to making taxable or GST‑free sales). Keep accurate records and check that your suppliers are registered for GST if you’re relying on their invoices for credits.

BAS Reporting And Payments

Most small businesses lodge a BAS quarterly. You’ll report:

• GST you collected on sales
• GST credits on business purchases
• The net amount payable (or refundable)

Plan ahead for BAS deadlines. Good bookkeeping throughout the quarter makes this straightforward and reduces the risk of errors.

Common GST Scenarios For Small Businesses

Every business is different, but the following situations come up frequently and are worth planning for.

Online Stores And Platforms

If you sell online, your website should clearly show prices inclusive of GST (for Australian buyers), and your checkout and invoices need to identify GST amounts correctly. It’s also important to have fit‑for‑purpose Online Shop Terms and Conditions and a compliant Privacy Policy if you collect customer data. If you’re setting up from scratch, consider using tailored Online Shop Terms and Conditions that cover payments, shipping, returns and tax.

Mixture Of Taxable And GST‑Free Sales

Businesses in food, health or education often sell a mix of taxable and GST‑free items. You’ll need itemised invoices and clear coding in your accounting system so GST is applied (or not applied) correctly, and so your BAS reflects the right totals.

Deposits, Vouchers And Gift Cards

Deposits are usually subject to GST when applied to the final sale. For vouchers and gift cards, the GST timing can depend on the type of voucher and how it’s redeemed. If your model relies on prepayments or credit systems, align your process with your invoicing rules to avoid mismatches.

Selling Services To Overseas Customers

Some services supplied to non-residents can be GST‑free if certain criteria are met (for instance, the service is used outside Australia). Keep documentation that supports GST‑free treatment - and ensure your tax invoices reflect it.

Importing Stock Or Equipment

When you import goods, GST is generally payable at importation, although deferral and special rules can apply. Map how imported goods flow into your pricing and cash flow, and ensure you’re addressing GST on importation correctly so you’re eligible to claim credits where allowed.

Pricing, Contracts And GST: What To Watch

GST isn’t just a bookkeeping line - it has real world effects on how you sell and contract with customers and suppliers.

Clarity In Pricing And Quotes

When selling to consumers, show the total price including GST. For B2B, you can state a price “ex GST”, but be explicit in your quote or contract that GST will be added. Ambiguity can lead to disputes - and you don’t want GST eating into your margin because “we assumed it was included.”

Contract Terms That Reference GST

Most commercial agreements include a GST clause so both parties know how GST will be treated. If you regularly issue quotes or sign customer agreements, add a clear GST provision to avoid misunderstandings. This is particularly important for longer-term supply agreements and when pricing adjusts over time.

RCTI Clauses And Marketplace Models

If you sell through marketplaces or enterprise customers who issue invoices on your behalf, incorporate appropriate RCTI wording and ensure both sides are registered and in agreement about the process. This keeps your input tax credits and BAS reporting tidy.

“Out Of Scope” Items And Reimbursements

Some amounts you pass on - like government charges - may be out of scope for GST. Reimbursements can also be tricky. A clear contract and itemised invoices will help you apply GST correctly and explain charges to clients.

Setting Up Systems To Handle GST Smoothly

With the right foundations, GST becomes a simple rhythm in your business rather than a quarterly headache.

Choose The Right Accounting Method And Software

Decide whether cash or accrual accounting suits your cash flow and customers, then configure your accounting software accordingly. Set up tax codes for taxable, GST‑free and input‑taxed sales and purchases, and check your default templates for compliant tax invoices.

Standardise Your Documentation

Use consistent invoice and receipt templates, and make sure your terms of trade or customer contracts include GST clauses. If you’re expanding or taking on larger clients, it may be time to move from informal quotes to more robust agreements that cover pricing, tax and payment triggers.

Establish Clear Payment And Credit Terms

Good cash flow supports timely BAS payments. Align your credit policy and invoice payment terms with your BAS cycle so you’re not out of pocket when GST is due to the ATO.

Get Your Structure And Registrations Right Early

Your business structure impacts how you register for GST, how you contract, and your long-term risk. If you’re moving beyond a hobby into a real commercial venture, consider formalising your structure and registrations - for example, by proceeding with a company set up once you outgrow a sole trader model.

Common GST Mistakes (And How To Avoid Them)

We often see the same pitfalls - and they’re all preventable with a little planning.

• Forgetting to register on time after crossing $75,000 turnover - monitor your revenue and apply early if you’re close.
• Charging GST on GST‑free items - set up your product/service list correctly in your accounting software.
• Claiming credits without valid tax invoices - ensure you capture supplier invoices and that suppliers are registered for GST.
• Using non-compliant invoice templates - update your templates to include all mandatory details and GST statements.
• Treating consumer price displays as “ex GST” - when selling to consumers, your displayed price generally must include GST.
• Not documenting RCTI arrangements - put a compliant RCTI agreement in place if relevant.
• Overlooking import GST treatment - plan for the cash flow impact and documentation so credits can be claimed.

Essential Documents And Policies That Support GST Compliance

Strong paperwork doesn’t just look professional - it underpins your GST accuracy and reduces disputes.

• Customer Contracts or Terms: Set out pricing clearly (ex or inc GST), include a GST clause, and explain what happens with variations, reimbursements and pass‑through costs.
• Tax Invoice Template: A compliant template with your ABN, GST breakdowns and totals makes life easier at BAS time.
• Supplier Agreements: Confirm whether prices are ex or inc GST and whether RCTIs apply, so credits are available and correctly timed.
• Website Terms And Refunds Policy: Ensure your online sales flow, pricing display and refund process align with the Australian Consumer Law and your tax invoices. If you sell online, pair these with a clear Privacy Policy and tailored Online Shop Terms and Conditions.
• RCTI Agreement (If Needed): Use ATO-compliant wording and process for any RCTIs.

Your legal and tax frameworks work best when they’re designed together. If you’re formalising your operations, it may also be the right time to finalise your ABN, consider a company set up, and standardise contracts and invoices.

Key Takeaways

• GST is a 10% tax on most goods and services in Australia; you collect it on taxable sales and report it in your BAS.
• You must register once your GST turnover reaches $75,000 (or earlier if you choose); registration affects pricing, invoicing and reporting.
• Map your sales correctly as taxable, GST‑free or input taxed, and set up templates and software to charge GST accurately.
• Issue compliant tax invoices, consider whether RCTIs apply, and keep good records so you can claim input tax credits.
• Be explicit about GST in quotes and contracts, and ensure your displayed prices for consumers include GST.
• If you sell online or import goods, align your documents and processes with privacy, consumer law and GST on importation rules.
• Getting your structure, ABN and contracts in order early will make GST compliance simpler as you grow.

If you’d like a consultation on GST setup and the legal documents that support smooth compliance in your business, you can reach us at 1800 730 617 or team@sprintlaw.com.au for a free, no-obligations chat.