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Tax & compliance

GST & BAS calculator

Add or back out 10% GST, get a rough net-GST figure for your quarterly BAS, and check whether your turnover has crossed the $75,000 registration threshold.

GST quick maths
Add GST to a price, or pull GST out of a GST-inclusive price.
BAS estimate (this quarter)
A rough net GST position. Enter GST-inclusive totals.
Do I need to register for GST?
GST registration is required once your turnover hits the threshold.
Estimated GST to pay
$2,800.00
Net GST you’d owe the ATO this quarter (GST collected minus GST credits).
GST collected on sales$4,000.00
GST credits on expenses− $1,200.00
Net GST to pay$2,800.00
GST on the amount
Price excluding GST$1,000.00
GST (10%)$100.00
Price including GST$1,100.00
You must register for GST
Your turnover of $82,000 is at or above the $75,000 threshold, so GST registration is required (you have 21 days from reaching it).

traqR calculates GST on every quote and invoice and gives you a BAS-ready summary, so you’re not piecing this together from a shoebox at quarter’s end.

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How it works

1

GST is 1/11th of the total

In Australia GST is 10%, so the GST inside a GST-inclusive price is the total divided by 11 — not divided by 10.

2

BAS nets it off

On your BAS you pay the GST you collected on sales, minus the GST credits on your business purchases. The difference is what you owe (or get back).

3

Register at $75k

Once your rolling 12-month turnover reaches $75,000 you must register for GST within 21 days and start charging it.

Frequently asked questions

When do I have to register for GST in Australia?

You must register once your GST turnover reaches $75,000 in a rolling 12-month period (or you expect it to). You then have 21 days to register. Taxi, rideshare and some other activities must register regardless of turnover.

How do I work out the GST in a price?

For a GST-inclusive price, the GST is the price divided by 11. For example, $1,100 inc GST contains $100 of GST and $1,000 ex GST. To add GST to an ex-GST price, multiply by 1.1.

What can I claim GST credits on?

You can claim GST credits on business purchases that included GST and that you have a valid tax invoice for. Wages, bank fees, and GST-free items (like most basic food) don’t have GST, so there’s nothing to claim.

Is this my actual BAS figure?

No — it’s an estimate to help you plan. Your real BAS depends on GST-free and input-taxed items, capital purchases, and any PAYG. Always confirm with your accountant or the ATO before lodging.

General information only, current at the time of writing — not tax advice. The GST registration threshold is $75,000 (rolling 12-month turnover). Always confirm your obligations with the ATO or a registered tax agent.

Never piece together a BAS again

traqR tracks GST on every invoice and expense and hands you a BAS-ready summary. Try it free for 14 days.

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