Tax season is here — Lodge early, get your refund faster! Call 03 9115 1581

GST Calculator Australia

Need to work out GST fast? Our GST Calculator Australia tool does the maths for you, just enter an amount to see it with or without 10% GST, ready for your next invoice or BAS. 

5,000+

Satisfied Clients

$2M+

Tax Refunds Secured

12+

Years Experience

100%

Satisfaction Guaranteed

How Our BAS/GST Calculator Works

Our BAS/GST Calculator makes working out GST fast and accurate. Simply enter any dollar amount, then select whether it’s GST inclusive or GST exclusive. With one click, the calculator instantly shows you the GST component, the price excluding GST, and the total GST-inclusive amount, all based on the current 10% Australian GST rate. There’s no need to remember formulas or reach for a spreadsheet. 

Whether you’re issuing an invoice, checking a supplier’s bill, or preparing figures for your next BAS lodgment, our calculator gives you reliable numbers in seconds. It’s completely free, with no sign-up required. 

Calculated Your GST? Let Us Handle the Rest.

Once you’ve worked out your GST, our tax professionals can help with BAS lodgments, GST registration and ongoing compliance.

Every Calculator You Need, in One Place

One settlement figure, many moving parts. Explore the rest of your purchase numbers before you commit with our other calculators.

Base Rate Entity

Check whether your company qualifies for the lower 25% base rate entity company tax rate.

Break-even

Find the sales volume your business needs to cover every fixed and variable cost.

Cashflow Forecast

Project money in and out over the coming months and spot shortfalls before they hit.

Division 293 Tax

See whether your income triggers the extra 15% tax on concessional super contributions.

Client Reviews

What Our Clients Say

Real reviews from real Australians. 300+ five-star Google reviews and counting.

FAQs

Got Questions? We've Got Answers

Quick answers to common questions about GST, BAS, and calculations.

The GST rate in Australia is a flat 10%, applied to most goods and services.

To add GST, multiply the price by 1.1. To find the GST component of a price that already includes GST, divide the total by 11.

No. Some items are GST-free, including basic food, many medical and health services, and certain educational courses.

Only if your turnover is $75,000 or more per year, or you provide ride-sourcing/taxi services. Below that, registration is optional.

Most small businesses lodge their BAS every quarter, but depending on your turnover and what the ATO requires, you might lodge monthly or just once a year instead. 

The ATO can apply Failure to Lodge (FTL) penalties and the General Interest Charge (GIC) on any outstanding amounts, so timely lodging is important. 

Absolutely. It’s a quick way to check your GST figures before sending out an invoice, or to double-check one you’ve received from a supplier.

No, you have to be registered for GST in order to get GST credits for things you buy for your business. 

Need Help Claiming GST Credits?

We’ll help you understand what you’re entitled to claim, and take care of your BAS so it’s done properly and never late, walk into your nearest AAD office or book online.