GST · AUD
Australia
ATO official PDF guidance and GST Act compilation 96 were read for ordinary taxable, GST-free and input-taxed treatments and single-supply rounding.
These references are not an approval of a tax rate. The calculator applies a percentage you enter manually. Selecting Australia changes the currency, not the applicable tax rules.
Official reference pages
- How GST works (HTML retrieval incomplete) Australian Taxation OfficeOfficial reference identified; direct retrieval incomplete. Full document not verified.
- GST guide (official PDF content read) Australian Taxation OfficePage content read during source research. Full rule validation remains pending.
- GST sales guidance (official PDF content read) Australian Taxation OfficePage content read during source research. Full rule validation remains pending.
- GST Act compilation 96: sections 9-70, 9-75 and 9-90 Federal Register of LegislationPage content read during source research. Full rule validation remains pending.
What still needs validation
Ordinary ATO HTML pages could not be directly parsed; official PDF retrieval succeeded. Human approval, category-specific eligibility, effective windows, multi-item rounding and special schemes remain pending. A compilation date is not a tax-rate effective start.
Before a rate can become a preset
Each executable rule needs a specific legal citation, jurisdiction, transaction category, tax base, effective period, exceptions and rounding policy. It also needs independent expected-result tests and recorded human approval. A retrieval date is not an effective date or a tax-professional sign-off.
Calculation method
For a single proportional percentage, add tax using net × rate ÷ 100. To extract included tax, divide the total by (1 + rate ÷ 100). This manual method does not determine whether that percentage legally applies.
Read the calculation and rounding limitations