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
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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
Allocate Overheads to Jobs: Choose a Cost Driver That Fits
Compare labour-hour, job-count and revenue allocations for two jobs. Check overhead recovery, capacity assumptions and the effect on your next quote.
Call-Out and Travel Charges: Calculate the Cost of a Visit
Calculate travel, setup and on-site cost for a service visit. Compare a call-out component with a bundled minimum price and test more distant jobs.
Cost of Goods Sold (COGS): Reconcile Stock and Purchases
Work through a cost-of-goods-sold reconciliation with opening stock, purchases and closing stock, plus a separate record for returns and stock differences.
Discount Campaign Cost Sheet: How Many Extra Sales Do You Need?
Calculate the extra units a discount must sell to preserve contribution. Include payment fees, fulfilment and campaign spending, then test capacity.
Free Shipping Threshold: Can the Basket Pay for Delivery?
Test a free-shipping threshold across basket sizes and delivery zones. Include product margin, packing, heavy items and a target contribution per order.
Job Profitability Review: Compare Your Quote with Actual Costs
Compare quoted and actual labour, materials, travel and rework. Use a worked job-cost review to find the estimating assumption to change next time.
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.
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