Turn this into a tax invoice in GlideQuote — free
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How it is calculated
Adding GST: GST = price × 10 ÷ 100 · total = price + GST
GST inside a GST-inclusive price: GST = total ÷ 11 · price excluding GST = total − GST (10 ÷ 110 simplifies to 1 ÷ 11).
Worked example: A$100 excluding GST → GST A$10.00 → A$110.00. The other way: A$110 ÷ 11 = A$10.00 GST, A$100.00 excluding GST.
No-ABN withholding
The ATO's rule for the business paying the invoice: if a supplier does not provide an ABN, you generally withhold the top rate of tax from the payment — 47% — and pay it to the ATO, unless the total payment is A$75 or less excluding GST or another exception applies (for example the supplier gives you a Statement by a supplier form). withheld = total payment × 47 ÷ 100
Worked example: a A$1,000 invoice from a supplier with no ABN → withhold A$470.00 → pay the supplier A$530.00.
Common questions
How do I work out the GST in a price that includes GST?
Divide by 11. A A$110 price includes A$10 GST. That is the arithmetic of a 10% rate: 10 ÷ 110 = 1 ÷ 11.
Do I have to charge GST?
Only if you are registered for GST. The ATO sets the registration turnover threshold — check ato.gov.au for the current figure before you decide.
What is no-ABN withholding?
If a supplier does not quote an ABN on their invoice, the business paying them generally withholds the top rate of tax — 47% — from the payment and sends it to the ATO, unless the payment is A$75 or less excluding GST or another exception applies, such as the supplier providing a "Statement by a supplier" form.
Does GST vary by state?
No. GST is one rate of 10% across Australia.
What does GlideQuote put on an Australian tax invoice?
The document is headed "Tax Invoice", shows your ABN and the GST on the taxable lines, and prints your business details, logo and signature on the PDF.
What GlideQuote does with this
GlideQuote is set up for Australia: documents headed "Tax Invoice" with your ABN, GST on the taxable lines, A$ formatting, quotes that convert to invoices, and deposits or milestone payments for staged jobs.
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Sources
ATO — Goods and services tax (GST): a broad-based tax of 10%:
ato.gov.auATO — Withholding if ABN not provided (top rate of tax; A$75 exception; updated 11 June 2025):
ato.gov.au · Statement by a supplier not quoting an ABN (47% from 1 July 2017):
ato.gov.auThis calculator shows the arithmetic of the published rates; it is not tax advice. For your own situation ask an accountant.
Last updated: 2 November 2026
