GST Inclusive vs Exclusive in Australia: 'Inclusive of GST' Explained

GST touches almost every sale most Australian small businesses make. But the wording around price displays can be confusing - especially when you see phrases like “inclusive of GST” or “exclusive of GST” in quotes, invoices and contracts.

Getting this right isn’t just a finance exercise. It affects how you advertise prices, how customers understand your offers, and whether your paperwork complies with Australian Consumer Law and tax rules.

In this guide, we’ll explain the inclusive of GST meaning in plain English, walk through simple calculations, and share practical tips for how to show prices on your website, quotes and invoices the right way.

What Does “Inclusive Of GST” Mean?

“Inclusive of GST” (also written as “GST inclusive” or “incl. GST”) means the total price shown already includes the 10% Goods and Services Tax. If a price tag says $110 inclusive of GST, the customer pays $110 - not $110 plus extra.

Put another way, the GST component is inside the total price. For a standard taxable sale:

• GST-inclusive total = GST-exclusive amount × 1.10
• GST amount = GST-inclusive total ÷ 11

Why it matters: when you’re selling to consumers, the Australian Consumer Law expects you to display the full price a consumer will pay, which generally means GST inclusive. We cover the advertising rules below.

GST Exclusive: What It Means And When To Use It

“Exclusive of GST” (or “GST exclusive”, “excl. GST”, “+ GST”) means the price shown does not include GST yet. If a quote says $1,000 exclusive of GST, you’ll add 10% GST ($100) at invoice time, for a total of $1,100.

Businesses often use GST-exclusive pricing in B2B quotes or wholesale price lists, but this is only appropriate if your audience understands that GST will be added and your document clearly says so. A simple statement like “All prices are exclusive of GST” near the numbers helps avoid confusion.

If you’re advertising to consumers, using exclusive pricing can be risky because consumers must be able to see the total price that includes all mandatory charges. Your best bet is to show a clear GST-inclusive total.

How Should You Show Prices And Quotes Legally In Australia?

Under the Australian Consumer Law (ACL), when you advertise prices to consumers, you must prominently display the total price - that is, the amount payable including GST and any mandatory fees. If you show a GST-exclusive amount, you should also show the inclusive total just as prominently so customers are not misled.

Make sure your marketing and website comply with these advertised price laws. Clear, upfront pricing helps you avoid complaints and builds trust.

For quotes and proposals, especially in business-to-business settings, you can use GST-exclusive figures if you prefer - but clarity is key. State “All prices are exclusive of GST” and include a line showing the calculated GST and the GST-inclusive total. This can also help where clients need to budget the full amount.

If your quote forms part of a binding offer, it’s wise to pair it with clear quote terms so there’s no ambiguity about what’s included, validity periods, or taxes. Many businesses use a short set of quote terms or fold these into their Terms of Trade. If you’re unsure whether a quote could be binding, it’s worth reading up on is a quotation legally binding? and using consistent wording.

Online, your checkout or pricing page should make the GST position obvious - e.g. “$109 (incl. GST)” - and provide a tax invoice after purchase. Your invoice should then clearly show the GST amount.

Calculating GST-Inclusive And GST-Exclusive Amounts (With Examples)

If You Have A GST-Exclusive Price

To add GST: multiply by 10% (or by 1.10 to get the total).

• Exclusive price: $1,000
• GST (10%): $100
• Total inclusive of GST: $1,100

If You Have A GST-Inclusive Price

To find the GST inside a total price: divide by 11.

• Inclusive total: $110
• GST component: $110 ÷ 11 = $10
• Exclusive amount: $110 − $10 = $100

Common Scenarios

• Fixed inclusive price on your website: If your product is listed at $55 incl. GST, your invoice should still show the GST amount (i.e. $5) and the total price of $55.
• Wholesale or B2B price list: You may list $50 excl. GST, then add GST at invoicing. Be sure your price list clearly states it’s exclusive of GST.
• Mixed supplies: If an invoice includes both taxable items (10% GST) and GST-free items (e.g. some basic foods or certain health services), only add GST to the taxable items and show the GST and total clearly.

Invoices, RCTIs And Payment Terms: Getting The Wording Right

Once you’ve settled on how you present prices, make sure your invoices consistently reflect the inclusive or exclusive approach and include the required tax details. If you’re registered for GST and making taxable sales, your tax invoice should clearly show:

• The words “Tax Invoice”
• Your business details and ABN
• The date, description of goods/services, quantity and price
• Either the GST amount shown separately, or a statement that “Total price includes GST”

Some industries and supply chains use Recipient Created Tax Invoices (RCTIs), where the purchaser issues the tax invoice to the supplier. If you use or are asked to accept RCTIs, make sure your process and agreement meet the ATO’s requirements for recipient created tax invoices.

It’s also a good idea to standardise your payment terms across quotes and invoices so there’s no mismatch. A short clause that sets due dates, methods of payment, and whether late fees apply can save headaches. If you’re deciding how to set due dates or clarify when an amount becomes overdue, this guide to setting invoice payment terms is helpful. If you intend to charge late fees, make sure your terms comply with the rules around late payment fees and that customers are notified in advance.

To keep everything consistent and legally robust, many businesses embed these points in a master set of Terms of Trade or customer terms that apply to all sales. Then, each quote and invoice simply refers back to those terms.

“Inclusive Of GST” And “Exclusive Of GST”: Wording You Can Use

On Quotes

• GST inclusive approach: “Total price (incl. GST): $5,500”
• GST exclusive approach: “Subtotal (excl. GST): $5,000; GST (10%): $500; Total (incl. GST): $5,500”
• Global notice when all line items are exclusive: “All prices are exclusive of GST. GST will be added at 10%.”

On Invoices

• Show each line with the exclusive amount and GST category, or provide a clear GST summary at the bottom.
• Include a statement if relevant: “The total price includes GST where applicable.”

In Contracts And Price Lists

• “All amounts stated are exclusive of GST unless expressly stated otherwise.”
• “If GST is payable on a supply, the recipient must pay to the supplier an additional amount equal to the GST payable, at the same time as the consideration is due.”

If your quote or email exchange forms part of your agreement, clarity becomes even more important. In many cases, an email exchange can create binding terms, so it’s prudent to be explicit about whether amounts are inclusive or exclusive and consider aligning your process with your quote practices and any Terms of Trade.

Special Cases: GST-Free, Input Taxed, Exports And Surcharges

Not every sale attracts GST. Keep these exceptions in mind when you label prices as inclusive or exclusive:

• GST-free sales: Certain goods and services (e.g. some basic foods, some health services, certain education courses) are GST-free. If an item is GST-free, there’s no GST to include, so the inclusive and exclusive prices are the same for that item.
• Input taxed supplies: Financial supplies and residential rent are common examples. You don’t charge GST on these supplies, but you usually can’t claim input tax credits on related purchases.
• Exports (supplies outside Australia): Often GST-free if eligible. If you sell to overseas customers, double-check your documentation and ensure your invoices reflect the correct GST treatment.
• Card surcharges and delivery fees: If these are mandatory for the customer, your consumer-facing price display should make the total cost clear. Avoid showing a headline price that hides compulsory charges until checkout - that can be misleading under the ACL.

“Total Inclusive Of GST” Vs Line-By-Line GST - Which Is Better?

Both approaches are acceptable if they are clear and accurate. Many customer-facing pages show a single GST-inclusive total to keep it simple. In your invoices, a line-by-line breakdown (or a clear GST subtotal) helps your customers (especially business customers) reconcile and claim input tax credits where eligible.

For larger projects or mixed supplies, we recommend:

• Show unit prices (exclusive), the GST column (tax code), and the total inclusive; and
• Repeat a clear grand total “inclusive of GST” at the end.

Common Pitfalls To Avoid

• Not stating your basis: If you quote exclusive figures but don’t say “excl. GST” or “+ GST”, customers may assume the price is inclusive. Always label your figures.
• Inconsistent labelling: Using “excl. GST” on one part of a document and “incl. GST” on another can cause disputes. Keep your wording consistent across your quotes, invoices and terms.
• Consumer advertising with exclusive figures only: If you market to consumers, ensure the total price (inclusive of GST and mandatory fees) is prominent to meet ACL requirements. Review your website and ads against the advertised price laws.
• Forgetting to align documents: Quotes, order forms, invoices and your Terms of Trade should all tell the same story about GST.
• Silence on late fees: If you plan to charge them, include a fair and compliant clause up front. Without clear notice, late fees can be challenged - check what’s permitted around late payment fees and ensure your payment terms reflect this.
• Missing tax invoice details: If you’re registered for GST, make sure your invoices include the details the ATO expects, including either a GST line or a statement that the price includes GST.

Quick Reference: Inclusive GST Meaning Vs Exclusive GST Meaning

• GST inclusive meaning: The price shown already contains the 10% GST. The customer pays that total. GST amount = total ÷ 11.
• GST exclusive meaning: The price shown does not include GST; add 10% to work out the total payable. Total = exclusive × 1.10.
• “All prices are exclusive of GST” means: Expect another 10% to be added at invoice time (unless an item is GST-free or input taxed).
• GST inclusive vs exclusive: Inclusive is preferred for consumer advertising; exclusive is common in B2B if clearly stated. In all cases, clarity and consistency are essential.

How To Bake GST Clarity Into Your Sales Process

To reduce disputes and keep your admin smooth, consider these practical steps:

1. Pick your default: Decide whether your standard practice is inclusive or exclusive pricing for each audience (consumer, wholesale, enterprise). Document this choice.
2. Standardise your templates: Update your quote template, price lists and invoice template with consistent labels (e.g. “(excl. GST)” or “(incl. GST)”) and a simple GST summary line.
3. Align your customer terms: Add a short tax clause in your Terms of Trade covering GST treatment, how GST will be added, and when tax invoices are issued.
4. Check your website and ads: For consumer offers, display the total price clearly and avoid hiding mandatory charges until checkout, in line with advertising obligations.
5. Train your team: Make sure sales and accounts staff use the same wording and calculations. Provide a one-page cheat sheet with examples (exclusive → inclusive and inclusive → exclusive).
6. Use confirmations wisely: If you confirm pricing by email, repeat whether the amount is inclusive or exclusive of GST. Where emails form part of the contract, clarity helps avoid disputes about what was agreed.

Key Takeaways

• “Inclusive of GST” means the price already contains the 10% GST; “exclusive of GST” means you add 10% to reach the total payable.
• For consumer advertising, show the total price clearly - GST inclusive - to comply with Australian Consumer Law.
• In B2B settings, you can use exclusive pricing if you clearly say “excl. GST” and show the inclusive total as part of your quote or invoice.
• Keep your quotes, invoices, website and Terms of Trade consistent about whether prices are inclusive or exclusive of GST.
• Show GST breakdowns on tax invoices and consider whether RCTIs apply in your industry or supply chain.
• Avoid common pitfalls: unlabeled prices, inconsistent wording, and consumer ads that hide mandatory charges.

If you’d like help reviewing your pricing wording, quotes, invoices or Terms of Trade, you can reach us at 1800 730 617 or team@sprintlaw.com.au for a free, no-obligations chat.