Guide hub
Practical guides that support the calculator library
These guide pages explain common pricing, GST, payroll, and quoting decisions in plain English so the calculators are easier to use well.
Published guides
Current BizTools.au guides
Published guides are mapped around the same high-intent pricing, payroll, GST, cashflow, and quoting questions as the calculators.
Margin vs Markup: What is the difference?
Compare margin and markup clearly so you can price from cost without misreading the profit left in the final sale price.
Understand the differenceHow to Price Services Profitably in Australia
Build more reliable service prices from labour, overhead recovery, and margin targets instead of rough guesswork.
Price services betterHow to Set a Sustainable Hourly Rate
Set an hourly rate that covers income goals, overheads, and real billable hours instead of copying someone else’s number.
Set your hourly rateHow to Price Services for Profit
Build service prices from cost, overhead, and target profit so the job still works after delivery.
Price for profitLate Payment Fees on Invoices in Australia
Use late fee logic more carefully by pairing the calculator with clear payment terms and a realistic overdue process.
Review late fee logicHow to Calculate Cash Flow Runway
Measure how many months of runway the business has left based on current cash, revenue, and monthly burn.
Check your runwayEmployee vs Contractor Costs in Australia
Compare employee and contractor costs more realistically before you hire, restructure, or lock in the wrong staffing model.
Compare staffing optionsContractor vs Employee Cost — Small Business Guide
Compare contractor and employee cost with small-business realities like workload certainty, control, and utilisation in view.
Weigh the cost trade-offsHow Tradies Should Build a Profitable Quote
Build tradie quotes with clearer labour recovery, materials, markup, GST, and job-profit checks.
Build better quotesGST on Quotes and Invoices in Australia
Keep GST-inclusive and GST-exclusive numbers straight on quotes and invoices so totals stay consistent and easier to explain.
Check GST wordingGST Registration Threshold in Australia (2026): When You Must Register
Understand the $75,000 GST threshold, the rolling 12-month test, and when an AU sole trader or small business must register.
Check the thresholdSole Trader vs Pty Ltd in Australia: When to Switch
Decide when to switch from sole trader to Pty Ltd in Australia — with the real tax, liability, and admin trade-offs spelt out.
Read the decision guideHow Much Tax Should I Save as a Sole Trader in Australia?
Work out what percentage of each invoice you should set aside for income tax, GST, and super as an AU sole trader.
Set aside the right amountSingle Touch Payroll (STP) Explained for Australian Small Business
Understand the STP reporting rules for AU employers and which payroll platforms handle them automatically.
Read the STP basicsSole Trader Bank Account in Australia: Do I Need a Separate One?
Decide whether you need a separate business bank account as an Australian sole trader, and what your real options are.
Read the guideFeatured reads
Start with the highest-intent guide topics
These are some of the most commercially useful guide pages to read first if you are tightening pricing, staffing, or cashflow decisions.
How to Price Services for Profit
Build service prices from cost, overhead, and target profit so the job still works after delivery.
Price for profitHow to Set a Sustainable Hourly Rate
Set an hourly rate that covers income goals, overheads, and real billable hours instead of copying someone else’s number.
Set your hourly rateHow to Calculate Cash Flow Runway
Measure how many months of runway the business has left based on current cash, revenue, and monthly burn.
Check your runwayLate Payment Fees on Invoices in Australia
Use late fee logic more carefully by pairing the calculator with clear payment terms and a realistic overdue process.
Review late fee logicContractor vs Employee Cost — Small Business Guide
Compare contractor and employee cost with small-business realities like workload certainty, control, and utilisation in view.
Weigh the cost trade-offsHow Tradies Should Build a Profitable Quote
Build tradie quotes with clearer labour recovery, materials, markup, GST, and job-profit checks.
Build better quotesConnected categories
Every guide sits inside a calculator category
This keeps internal linking predictable and helps BizTools.au grow into tighter content clusters around pricing, GST, payroll, and tradie workflows.
Pricing & Profit
Australian pricing and profit calculators — service pricing, markup, margin, break-even, cashflow runway, late fees, and SEO ROI checks.
View categoryPayroll & Staff Cost
Australian payroll and staff cost calculators for wages, on-costs, super, contractor comparisons, utilisation, leave, and real employer spend.
View categoryGST & Tax
Australian GST and tax calculators for quote totals, invoice checks, BAS planning, and GST-inclusive pricing.
View categoryTradie Tools
Australian tradie calculators for job costing, quoting, quote profit, labour rates, materials, call-out fees, and project profitability.
View category