Alex is Sprintlaw’s co-founder and principal lawyer. Alex previously worked at a top-tier firm as a lawyer specialising in technology and media contracts, and founded a digital agency which he sold in 2015.
If you’re building a business in Australia, you’ll quickly come across “GST” in conversations about pricing, invoicing and cash flow. Understanding what GST stands for - and what it means in practice - helps you set your prices correctly, draft solid terms, and stay compliant from day one.
In this guide, we break down GST in plain English, explain when you need to register, and show you how it flows through your quotes, invoices and contracts. We’ll also flag the legal documents that help keep your business protected as you grow.
What Does GST Stand For - And What Is It?
GST stands for Goods and Services Tax. It’s a 10% value-added tax on most goods and services sold in Australia.
At a high level, GST is designed to be collected by businesses at the point of sale and remitted to the Australian Taxation Office (ATO) via your Business Activity Statement (BAS). If you’re registered for GST, you generally:
- Charge 10% GST on your taxable sales.
- Claim credits for the GST included in business purchases (called input tax credits).
- Report and pay the net amount to the ATO (usually quarterly).
Not every sale attracts GST. Some sales are GST-free (like most basic food, certain health and education services and exports), and some are input taxed (for example, residential rent and many financial services). But for many small businesses selling everyday products and services, GST will be part of daily operations.
Do You Need To Register For GST?
You must register for GST if your GST turnover (your business’s gross income excluding GST) is $75,000 or more in a 12-month period. For not-for-profits, the threshold is $150,000.
There are also cases where you must register regardless of turnover. For example, ride-sourcing drivers (such as rideshare) must register for GST from the first dollar - the normal threshold doesn’t apply. If this is you, it’s worth reviewing the specifics around GST requirements for Uber drivers.
You can also voluntarily register before you hit the threshold. This can be helpful if you want to claim input tax credits on startup costs, or if your clients expect tax invoices showing GST. Just remember that once registered, you need to charge GST on taxable sales and lodge your BAS as required.
To register, you’ll need an ABN and to nominate a reporting cycle (monthly, quarterly or annually). Many small businesses lodge quarterly, which strikes a balance between admin workload and cash flow visibility.
How GST Affects Pricing, Invoicing And Contracts
Understanding how GST flows through your pricing and paperwork reduces confusion for customers and helps you avoid common mistakes.
Pricing And Display
If you sell to consumers, the Australian Consumer Law generally expects that displayed prices are “GST-inclusive” if GST applies. You can’t advertise a lower price and then add GST at checkout if the customer would reasonably expect the total price to include it.
Make sure your websites, quotes and menu boards present clear, total pricing so customers aren’t misled. This is not only good practice - it’s also part of complying with advertised price laws.
Quotes, Purchase Orders And Payment Terms
Where you issue quotes, state whether prices are inclusive or exclusive of GST. Consistency across your quote template, purchase orders and invoices avoids disputes later.
It also pays to set clear billing rules - due dates, late fees, and accepted payment methods - in your sales process. Many businesses codify this via their invoice payment terms and include a brief GST statement in their quotes and order forms.
Tax Invoices
If you’re registered for GST and you make a taxable sale, you must provide a compliant tax invoice within a reasonable period if your customer asks for one. A valid tax invoice typically includes:
- The words “Tax invoice”.
- Your identity and ABN.
- The invoice date.
- A clear description of what you sold.
- The price and the amount of GST, or a statement that the total price includes GST.
For invoices of $1,000 or more, you also need to show the buyer’s identity (or ABN). If you sell both taxable and GST-free items, list them separately so the GST treatment is clear.
Recipient Created Tax Invoices (RCTIs)
In some industries (like marketplaces, commission arrangements or freight), the buyer issues the invoice on your behalf. This is called a Recipient Created Tax Invoice. RCTIs are only allowed in specific situations and require both parties to agree in writing. If this applies to you, get familiar with Recipient Created Tax Invoices and ensure your contracts reflect the correct process.
Terms And Contracts
Your contracts should deal with GST plainly. A typical clause says whether amounts are inclusive or exclusive of GST, who’s responsible to pay any GST on top, how tax invoices will be issued, and what happens if the GST law changes or an adjustment is needed.
If you sell B2B, consider formal Terms of Trade or a Customer Contract that includes GST wording, payment terms, late fees and dispute resolution. Clear terms reduce the risk of price disputes and protect your cash flow.
Common GST Scenarios For Small Businesses
Every business looks different, but most fall into a handful of GST patterns. Here are common situations and what to consider.
Service Businesses (Consultants, Creatives, Trades)
Most services are taxable supplies, so you’ll likely charge 10% GST once you’re registered. Keep descriptions on tax invoices clear. Where you pass through expenses to clients, decide upfront if they’re disbursements (the client’s expense) or part of your fee - the GST treatment can differ.
Retail And E-Commerce
Prices shown to consumers should generally be GST-inclusive. Ensure your checkout displays a clear total before purchase and that your tax invoices are emailed automatically after payment. It’s also important to have a website Privacy Policy if you collect personal information and clear online terms that set out ordering, delivery and refunds. Many online retailers start with a compliant Privacy Policy alongside their sales terms.
Importers And Exporters
GST interacts with cross-border trade differently. Exports are generally GST-free (if specific conditions are met). Imports often attract GST at the border, with potential credits depending on your registration and the import method. If you’re growing an international supply chain, read up on GST on importation and ensure your contracts and record-keeping support your position.
Subscription And Platform Businesses
Subscriptions are usually taxable supplies, and recurring billing needs accurate tax invoices, proration rules and clear cancellation terms. If you use direct debit or stored cards, make sure your billing complies with direct debit laws and that your system issues compliant tax invoices automatically on each charge.
Mixed Supplies (Taxable + GST-Free)
If you sell a mix of taxable and GST-free items (for example, a hamper that includes both basic food and non-food goods), you’ll need to apportion correctly so the right GST applies to each component. Clarity on your product list and SKU setup helps you stay consistent at the register and in your BAS.
Step-By-Step: Getting GST-Ready
Here’s a simple, practical roadmap to get your business GST-ready - whether you’re registering now or planning ahead.
1) Confirm Whether You Need To Register
- Estimate your GST turnover (gross income excluding GST) over a 12-month period.
- If it’s $75,000 or more (or you’re in a category that must register from the first dollar), plan to register.
- Decide if voluntary registration makes sense now (e.g. to claim input tax credits on setup costs).
2) Register And Choose Your Reporting Basis
- Get an ABN if you don’t have one yet.
- Register for GST and choose a reporting cycle (monthly, quarterly or annually) and accounting basis (cash or accrual, if eligible).
3) Update Pricing, Quotes And Sales Channels
- Decide whether you’ll display prices inclusive or exclusive of GST for B2B; consumer pricing should generally be inclusive.
- Update your price lists, menus, website product pages and checkout flows accordingly.
- Add a statement to quotes clarifying whether prices include GST.
4) Set Up Compliant Invoicing
- Configure your invoicing software to include ABN, “Tax invoice”, GST amounts and clear line descriptions.
- Use different tax codes for taxable, GST-free and input taxed items so your BAS is accurate.
- If you operate under RCTIs, ensure you have written agreements and processes in place.
5) Align Your Contracts And Policies
- Make sure your Customer Contract or Terms of Trade deal with GST, invoicing timelines, interest on late payment and adjustments.
- Online businesses should ensure their site terms and Privacy Policy reflect their billing and data practices.
- For complex arrangements (subscriptions, hybrid products, cross-border), it’s wise to get tailored wording drafted by a lawyer.
6) Train Your Team And Keep Good Records
- Teach staff how to code sales correctly at the register or in your CRM.
- Keep receipts and tax invoices for business purchases so you can substantiate input tax credits.
- Diary BAS due dates and set aside GST collected so you’re ready to pay on time.
GST FAQs For Small Businesses
Is GST The Same As VAT?
GST is Australia’s version of a value-added tax (VAT). The mechanics are similar - tax is collected at each stage of the supply chain, with credits for tax paid on inputs - but the rules are specific to Australian law.
Do I Charge GST To Overseas Customers?
It depends on the supply. Many exports of goods and certain services are GST-free if conditions are met. However, digital products and services supplied to Australian consumers may still attract GST even if delivered online. If you sell cross-border, get advice on the exact rules for your model.
What If I Forget To Charge GST?
If you’re registered, you’re responsible for remitting GST on taxable sales. If you undercharged, you might need to issue an adjustment note and correct it in your next BAS. Your contracts should allow for adjustments where there’s a GST mistake.
Do I Need Special Wording On My Invoices?
Yes - the basics of a compliant tax invoice include the “Tax invoice” heading, your ABN, invoice date, description of goods/services, and either the GST amount or a statement that the total includes GST. For higher-value invoices, include the buyer’s identity or ABN as required.
How Does GST Impact Refunds And Discounts?
If you issue a refund or discount after invoicing, you may need to issue an adjustment note and reflect the change in your BAS. Make sure your refund policy aligns with your obligations under the Australian Consumer Law and your invoicing processes.
What Legal Documents Will I Need?
GST touches your pricing, invoicing and customer communications - so it should also be reflected in your contracts and policies. Depending on how you operate, consider having:
- Customer Contract or Services Agreement: Sets out pricing (inclusive or exclusive of GST), billing, late fees, refunds and adjustments.
- Terms of Trade: A standard set of terms for repeat B2B sales, including GST clauses and invoice requirements.
- Website Sales Terms: Clear online terms covering ordering, delivery, cancellations and how GST is shown at checkout.
- Privacy Policy: Explains how you collect and use customer data (especially important for e-commerce and subscription billing).
- Supplier Agreements: Clarify if prices are GST-inclusive or exclusive and who issues tax invoices (and if RCTIs apply).
- Quote/Order Form Templates: State whether prices include GST and link to your master terms.
- Invoice Terms: Short, consistent payment terms on the invoice that match your contracts and your software settings.
Not every business needs every document, but most will need a solid customer-facing agreement and privacy documentation, plus invoice and quote templates that match how you charge GST.
Key Takeaways
- GST stands for Goods and Services Tax - a 10% tax on most goods and services sold in Australia.
- You must register if your GST turnover hits $75,000 (or earlier if you’re in a category that requires registration regardless of turnover).
- Make pricing clear and compliant - consumer-facing prices should generally be GST-inclusive to align with advertised price rules.
- Set up compliant tax invoices and align your quotes, payment terms and contracts so GST is handled consistently.
- Cross-border sales, RCTIs and mixed supplies have special rules - bake these into your contracts and invoicing processes.
- Protect your business with clear sales terms, a Privacy Policy, and templates that reflect your GST settings from day one.
If you’d like a consultation on setting up your contracts, invoicing templates and policies so they handle GST properly, you can reach us at 1800 730 617 or team@sprintlaw.com.au for a free, no-obligations chat.








