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Taxable Supply

A taxable supply is an Australian sale that meets the GST conditions and is neither GST-free nor input taxed.

Taxable supply is the GST law term. The ATO often uses the plainer phrase taxable sale. For an ordinary fully taxable sale, a GST-registered business includes 10% GST in the price, records the GST collected and reports the transaction through its activity statement.

The ATO’s GST definitions explain that taxable sales are made for payment, in the course of an enterprise and connected with Australia by an entity that is registered or required to be registered.

Where Taxable Supplies Appear

You will usually see taxable supplies in:

  • customer invoices and tax invoices
  • point-of-sale and e-commerce tax settings
  • GST tax codes
  • sales reports and the general ledger
  • BAS preparation
  • GST registration and turnover reviews
  • mixed sales containing taxable and GST-free lines
  • accountant or BAS agent adjustments

The word supply is broader than a sale of physical goods. It can include services, rights, leases and other transactions covered by the GST law.

How A Taxable Supply Works In Practice

For a common Australian transaction, check whether:

  1. the business is registered or required to be registered for GST
  2. the supply is made for payment or other consideration
  3. it is made in the course or furtherance of the business’s enterprise
  4. it is connected with the Australian indirect tax zone
  5. no GST-free or input-taxed rule applies

The GST Act contains the legal tests and exceptions. A business should check the specific rules for unusual transactions, exports, property, health, education, food, financial supplies and mixed supplies.

For a standard taxable price:

GST-exclusive price x 10% = GST

GST-exclusive price + GST = GST-inclusive price

To find GST already included in a fully taxable GST-inclusive price:

GST-inclusive price / 11 = GST

Simple Example

A GST-registered design studio sells a logo package for $2,000 excluding GST.

  • price excluding GST: $2,000
  • GST at 10%: $200
  • total price including GST: $2,200

The studio issues a tax invoice, records $2,000 revenue and a $200 GST liability, and includes the sale in its BAS records.

If the invoice also includes a genuinely GST-free line, the studio should not apply 10% to the whole document. Each line needs the correct tax treatment, and discounts or rounding should be allocated consistently.

Taxable Versus GST-Free And Input Taxed

The three treatments have different effects:

  • Taxable supply: GST is generally included in the sale, and eligible purchase GST credits may be claimed.
  • GST-free sale: no GST is charged on the sale, but related eligible purchase credits are generally preserved.
  • Input-taxed sale: no GST is charged, and credits for related purchases are generally restricted.

These differences affect invoice wording, pricing, purchase credits and BAS reporting. Using a generic no-GST code without identifying why the sale has no GST can create incorrect claims later.

Why Taxable Supplies Matter

The tax treatment controls how much the customer pays, how much GST the business owes and which figures appear in reports. Misclassifying a sale can produce underpaid GST, overstated revenue, incorrect prices or misleading BAS totals.

Common mistakes include:

  • charging GST before registration
  • failing to charge GST after the effective registration date
  • treating all food, health or education sales as GST-free
  • applying one code to a mixed invoice
  • calculating 10% of a GST-inclusive total instead of dividing by 11
  • posting GST collected as ordinary revenue
  • assuming an overseas customer automatically makes the sale GST-free

Regional Variations

Taxable supply is also used in other GST and VAT systems, but the rate, place-of-supply rules, exemptions and reporting differ.

New Zealand and Singapore use GST with their own rates and zero-rated rules. Ireland uses VAT, Canada uses GST/HST and the United States mainly uses state and local sales taxes. Apply the rules for the transaction’s jurisdiction.

How Gimbla Can Help

Gimbla can apply GST tax codes to invoice lines, separate revenue from GST collected and organise sales for BAS review. Line-level coding is especially useful when one invoice contains both taxable and GST-free items.

Helpful Gimbla Guides

In Short

A taxable supply is an Australian sale that attracts GST under the ordinary rules. Check the registration, transaction and exception tests, then apply GST at the correct line level and preserve the reporting trail.