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
Best CRM for Small Business in Australia (2026)
The best CRM for Australian small business in 2026: HubSpot, Zoho, Pipedrive, Capsule, ServiceM8 and Tradify compared, with real pricing and picks by type.
Branding on a Budget: Logo, Colours and Name for Under $500
Build a small business brand for under $500 in Australia. What to DIY in Canva, when to pay a designer, the brand kit checklist and real 2026-27 costs.
Buying a Franchise in Australia: What the Code Protects
Buying a franchise in Australia: what the Franchising Code gives you, the 14-day disclosure and cooling-off rules, the real costs, and the red flags to check.
Director ID: What It Is and How to Get One (Free)
A director ID is free and takes about 15 minutes online, and you must have one before you're appointed. How to apply, and the penalties if you don't.
How to Do Your Own Bookkeeping: A Monthly Routine for Owners
You can do your own bookkeeping with a separate bank account, software with bank feeds, 20 minutes a week and a monthly close checklist. Here's the routine.
How to Start a Lawn Mowing or Gardening Business
What it costs to start a lawn mowing business in Australia, what to charge per lawn, the ABN and insurance you need, and how to find your first 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.
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.
Read the starting-out guides