Australian GST Calculator: Add or Remove 10% GST
Work out the GST-exclusive price, GST amount and total for an ordinary taxable sale in Australia. Choose whether your starting figure already includes GST.
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Run your small business with confidence
Plain-English help with the things that actually trip up Australian business owners — tax and BAS, choosing software, business structures, cash flow and getting customers.
100% free to read Written for Australia No jargon, no waffle
What we cover
Help for every part of your business
The areas where small business owners lose the most time and money — explained properly, for Australian conditions.
Starting a Business
Structures, registrations and business plans
Explore guidesFinance, Tax & Accounting
BAS, GST, cash flow and staying ATO-ready
Explore guidesHiring & People
Hiring, awards, pay and managing a small team
Explore guidesLegal & Insurance
Contracts, consumer law, insurance and staying compliant
Explore guidesSoftware & Tools
The right tools for accounting, payroll and more
Explore guidesMarketing & Growth
Get found locally and grow without a big budget
Explore guidesIndustry Guides
How to start and run specific types of business
Explore guidesWork it out
Free calculators for everyday decisions
Check GST, test a price and see how many sales will cover your costs.
Break-Even Calculator for Small Business
Find how many sales you need each month to cover operating costs, then test a profit target. Use one product, one service or a realistic average sale.
Calculate nowProfit Margin & Markup Calculator
See what you keep from each sale before overheads. Compare margin with markup, or work backwards from the margin you want to a selling price.
Calculate nowHourly Rate Calculator for Sole Traders & Freelancers
Build a rate from the income you need and the hours you can actually invoice. Adjust time off and unpaid admin to see their effect on your pricing floor.
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Start with these
12 Months of Email Newsletter Ideas for Small Business
Stuck on what to send? 12 monthly newsletter themes any Australian small business can use, plus subject line formulas and outlines for three business types.
Content Marketing for Small Business: Blogging That Actually Works
Content marketing for small business, minus the fluff: how to pick topics customers actually search, write one useful article a month and measure it.
Hobby or Business? The ATO Test (and When You Must Declare Income)
Hobby or business? The ATO test has no dollar threshold — it's about profit intent, repetition and how you operate. What changes for tax, ABN and GST.
How to Open a Business Bank Account in Australia
How to open a business bank account in Australia: what you need for a sole trader, company or trust, big four vs online accounts, fees and the tax account.
How to Start a Consulting Business in Australia
How to start a consulting business in Australia: sole trader vs company, the PSI rules that limit deductions, pricing, PI insurance, contracts and clients.
Intellectual Property Basics: Trademarks, Copyright and Designs
Copyright is automatic in Australia. Trade marks, designs and patents aren't. What each protects, who owns work your contractors create, and what it costs.
Why this site
Advice that fits how Australia actually works
Most small business content online is written for the US — different tax system, different laws, different software. Everything here starts from the Australian reality: the ATO, GST, ASIC, awards and super.
- Australian-specific. BAS, GST, ABNs, STP — the acronyms you actually deal with, explained without assuming prior knowledge.
- Practical first. Every guide ends with clear next steps, not theory. Checklists, comparisons and worked examples throughout.
- Dates and sources. Guides show when they were published and link to sources so you can check rules and figures before acting.
- Free and independent. No paywalls. Where we compare products we say what's good and what isn't.
New to business? Don't start with guesswork.
Get your structure, registrations and plan right the first time — it's far cheaper than fixing them later.
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