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
Build a Progress Invoicing Schedule Around Project Cash Costs
Map billing milestones, evidence and expected receipts against project spending. See a six-week cash curve and the shortfall when one approval arrives late.
Consolidated Billing for a Customer with Several Locations
Choose consolidated billing or separate site invoices. Keep customer identity, order numbers, credits, approvals and location-level profitability visible.
Customer Balance Disagreement: Reconcile Invoices and Payments
Reconcile a customer balance when invoices, credits and payments disagree. Use a neutral email and a two-ledger worksheet to find and document the difference.
Customer Billing Details Checklist: Before You Start the Job
Collect the right customer name, purchase order and invoice contact before starting work. Includes a billing setup form and a traceable confirmation process.
Customer Invoice Portals: Track Submission and Approval
Track invoices through customer portals with a practical evidence checklist. Keep submission references, resolve approval holds and confirm when cash arrives.
Customer Payment Plan: Track Instalments and the Balance
Turn agreed invoice instalments into a clear tracking schedule. Match receipts, flag missed payments and preserve changes without recording the sale twice.
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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