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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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.
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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
Company Tax Rate: 25% or 30%? The Base Rate Entity Test
Your company pays 25% if aggregated turnover is under $50M and 80% or less of income is passive — otherwise 30%. Both tests explained, with examples.
Google Workspace vs Microsoft 365 for Small Business (2026)
Google Workspace vs Microsoft 365 for Australian small business: real AUD pricing, email on your domain, Meet vs Teams, security and which suits your team.
How to Close a Business Properly in Australia
How to close a business in Australia: tell staff and customers, cancel your ABN and GST in the right order, deregister the company with ASIC, keep records.
How to Get Free Media Coverage for Your Small Business
How to get free media coverage for your small business in Australia: what journalists actually want, the one-paragraph pitch email, and where to find them.
How to Read a Balance Sheet (Small Business Edition)
How to read a balance sheet for a small business: assets, liabilities and equity in plain English, working capital, the quick ratio and what to check monthly.
How to Start a Personal Training Business in Australia
What you need to start a personal training business in Australia — Cert IV, insurance, gym rent vs mobile vs online, what to charge and how to find clients.
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.
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