Inclusive vs Exclusive Tax Calculations in Australia: Guide & Examples'

What Does Inclusive of GST Mean vs Exclusive of GST?

Inclusive of GST means the price shown already includes the 10% tax so customer pays exactly what they see. Exclusive of GST means the 10% tax is added on top of the displayed price at checkout. In Australia, most retail store prices are GST inclusive, while B2B invoices are typically GST exclusive. In shorthand, inc GST meaning is tax included, while excl GST meaning is tax not yet added.

Taxes are included in every purchase and sale. In this article, we will discuss the differences between tax inclusive vs exclusive methods to determine which is the best option for Australian businesses. The method you choose affect your pricing strategy, customer's experience and how clearly your records reconcile at BAS lodgement. To understand the difference, first you need to know what these methods actually are.

What are Inclusive Vs. Exclusive Tax Calculations?

There are two methods of applying taxes to the price of goods. Let's explore them one by one.

Inclusive Tax calculation

When the tax amount is already included in the total price of the product, it is called an inclusive tax calculation. This method of calculation reduces the confusion of customers at checkout, as they know the actual price. In inclusive GST calculation, the base price and tax proportion are already included. Small businesses can simply calculate the tax on any product with a formula. Here is an example to understand how you can calculate your inclusive GST. The ATO recommends the simple 1/11 formula — divide any GST-inclusive price by 11 to find the GST component. Let's suppose the total price of a product is $550, which includes a 10% tax. The base price of the item is $500, and the tax portion is $50, as you can see following: Tax Amount = (550 × 10) / 110 = $50 Base Price = 550 − 50 = $500

What are the benefits for small businesses of using an inclusive method?

There are some benefits that you can enjoy, using inclusive tax calculation.

• Retail goods e.g. when you buy something at coles
• By Australian consumer laws the price should be GST inclusive
• Clear pricing at checkout unlike some countries do have different shelf pricing
• Faster checkout as customer already know the pricing

Exclusive Tax Calculation

When the tax amount is not already included in the base price, it is called an exclusive tax calculation. In this method, the tax is displayed on top of the base price and calculated separately. After the calculation, this tax amount is added to the total price. This method gives the businesses more visibility and clarity. In this way, they can control how much the tax price is and how much actual revenue is.

How to Calculate Exclusive Tax in Australia?

GST calculator online Just imagine a product’s base price is $500 and the tax rate is 10%. The customer pays $550, while $500 is the base price and $50 is the tax, as you can see following calculation: Tax Amount = 500 × (10 / 100) = $50 Total Price = 500 + 50 = $550

What are the benefits for small businesses of using an exclusive method?

As an inclusive method carries some significant benefits, there are also some key advantages of exclusive tax calculation, as follows

• Beneficial for B2B users
• Easier tax tracking
• Control, visibility, and clarity
• Clear GST breakdown on tax invoices

The Difference Between Inclusive and Exclusive GST

GST means Goods and Services Tax. Businesses can claim input tax credit (ITC) using GST on the purchases. This 10% tax was introduced on 1 July 2000, which replaced Australia's former wholesale sales tax. The table below breaks down how inclusive and exclusive GST comparison:  

Feature	Inclusive GST	Exclusive GST	Key Benefits
Definition	Tax included	Tax added on top	Simple easy to understand
Customer View	Total price shown	Base + tax shown	Transparent for customers
Formula	GST = Total ÷ 11	Total = Base × 1.1	Easy to calculate
Example (10% GST)	$110 → $10 → $100	$100 → $10 → $110	Quick checkout
Best For	Retail, e-commerce	B2B, manufacturing	Fits business type

Why is GST 1/11 of the GST-inclusive price?

Goods and Services Tax in Australia is 10% of the base (GST-exclusive) price, so a GST-inclusive total is one hundred ten percent(110%) of the base price which is 100% for the item + 10% for the tax. The GST portion is therefore 10/110, which evaluates to 1/11.

ATO shortcut works: to find the GST portion inside any GST-inclusive price, divide by 11. For a $1100 total, $1100 ÷ 11 = $100 GST, leaving a $1000 base/actual price. This holds at the 10% rate while at any other rate the fraction changes.

How to Add or Remove GST

Add GST (exclusive → inclusive): multiply the base price by 1.1. Example: $500 × 1.1 = $550.

Remove GST (inclusive → exclusive): divide the inclusive price by 1.1. Example: $550 ÷ 1.1 = $500.

Find the GST component of an inclusive price: divide by 11. Example: $550 ÷ 11 = $50.

General Sales Tax(GST) abbreviations: Quick Reference

• inc GST / incl GST: inclusive, the price already includes General sales tax.
• ex GST / excl GST / exc GST: exclusive, GST is added on top.
• + GST / plus GST: exclusive, GST is applied to the amount shown.

Worked Examples: Adding GST to Common Amounts

"Plus GST" means the 10% is added on top. To add GST, multiply the amount by 1.1; to find the GST portion alone, multiply by 0.1. Here are three common amounts:

Amount (ex GST)	GST (10%)	Total (inc GST)
$550	$55	$605
$1,000	$100	$1,100
$2,800	$280	$3,080

To get value from a GST-inclusive total, divide by 11 for the GST and by 1.1 for the base. For example, a $605 inclusive price contains $55 GST ($605 ÷ 11) and a $550 base ($605 ÷ 1.1).

Should an Invoice Show GST Inclusive or Exclusive?

Both cases are are acceptable inclusive and exclusive, but a valid Australian tax invoice must make the GST identifiable. In practice, B2B invoices usually list items GST-exclusive, then show the GST as a separate line and a GST-inclusive total. So a buyer can see the base price and claim the GST back as an input tax credits.

The Australian Taxation office (ATO) accepts either the GST amount shown separately, or a statement e.g. "Total price includes GST" when GST is exactly 1/11th of the total. Consumer (B2C) receipts are typically shown GST-inclusive e.g. if you buy something in Bunnings, since displayed retail prices in Australia must already include GST.

A tax invoice is needed to claim GST credits on purchases over $82.50 (including GST), and for sales of $1,000 or more the invoice must also show the buyer's identity or ABN. Most business are already aware of these things so its a general practice.

Which Method is Best for Australian Businesses

Businesses can choose the method according to their business type. Inclusive GST is ideal for consumer facing items e.g. buying stationery at Officeworks the item prices in the aisles are GST-inclusive, while exclusive GST is the best option for B2B invoicing e.g. providing a lawn-mowing service a tradie quotes prices normally GST-exclusive. There are several reasons why.

Ease in Advertising and Marketing

As tax is already included in the actual price, it is easy to remember and respond better to promotions. It gives you clear, final, and rounded numbers or prices for advertising.

Straightforward and Transparent Pricing

Adding the tax in advance to the price gives clear signal of transparent pricing. There is no need to calculate additional charges at checkout. This simplicity builds the trust of customers and makes the purchasing faster and easier.

Simplified Receipts, Using the Instant Receipts App

The Instant Receipts app generates receipts quickly, showing the total price including GST. This helps businesses:

• Reduce confusion
• Minimise disputes
• Enhance the professional image

Best Option for Australian B2C Businesses

This method is recommended and most used for Australian consumer-facing businesses. It is ideal for them because it creates an easier calculation. By using Instant Receipts, you can make your sales with GST simpler.

Conclusion

The GST inclusive method includes the tax in the base price, while the GST exclusive calculation doesn't include tax in the actual price. Both methods provide transparent and customer-friendly pricing, especially to Australian businesses and consumers. Using our Instant Receipts app, you stay compliant with ATO receipt requirements. You can make a great impact in your business by saving hours at tax time when all your expenses, receipts, income documents and bankstatements are in order.

FAQs

Why is GST 1/11 of the GST-inclusive price?

GST is 10% of the actual base price, so a GST-inclusive total is 110% of the base (100% for the item plus 10% tax) or its written value + 10%. The GST portion is 10/110, which equates to 1/11. To find the GST inside any inclusive price e.g. divide by 11: $550 ÷ 11 = $50 GST, leaving $500 base.

What do inc GST, ex GST, incl and excl mean?

Inc GST and incl GST mean inclusive: this price already contains the 10% GST. Ex GST, excl GST and exc GST mean exclusive: GST is added on top of the written price. So $100 ex GST costs $110 once GST is added, while $110 inc GST already includes $10 of GST.

Does "plus GST" mean inclusive or exclusive?

Exclusive. "Plus GST" means the 10% gst rate will be added on top of the amount shown, so $500 plus GST comes to $550. It is standard wording on B2B quotes and invoices.

How do I calculate GST inclusive and exclusive amounts?

To add GST (exclusive to inclusive), multiply by 1.1: $500 × 1.1 = $550. To remove GST (inclusive to exclusive), divide by 1.1: $550 ÷ 1.1 = $500. To isolate the GST component of an inclusive price, divide by 11: $550 ÷ 11 = $50.

Are retail prices in Australia GST inclusive?

Yes by Australian consumer law the price shown should be gst inclusive .e.g. when you buy something at Coles or Bunnings item's price is gst inclusive. So at the checkout you dont need to gues the total. B2B quotes and invoices are often shown GST exclusive, marked +GST.

What is the GST rate in Australia?

GST is 10% on most goods and services. Some supplies are GST-free, such as basic food and certain medical/health and education services.

Is a net price inclusive of GST?

Usually its not. "Net" generally means before GST (exclusive), but it is ambiguous and depends on who wrote it. Always confirm whether a net figure is ex(exclusive) or inc(inclusive) GST before relying on it.

What does GST mean on a receipt?

It is the 10% Goods and Services Tax included in the total. On a compliant tax invoice the GST amount is shown separately, and that is the figure a registered business claims back as an input tax credit when lodging their BAS. Instant Receipts extracts this GST line automatically from each receipt.

Is inclusive tax calculation the right option for small businesses?

Yes, but it doesn't mean an exclusive tax calculation is not suitable. Anyway, it can be said that inclusive is better due to faster checkout and easier for consumer to udnerstand

What does the GST online calculator mean?

It is a digital tool that saves you from manual calculations. It is especially designed for Australian businesses. You can quickly add or remove the tax from the base/written price.

How does Instant Receipts work for generating an accurate report of exclusive or inclusive GST?

This app uses OCR to track the receipt, which gives an accurate results. You can use our reporting section for this purpose.