Why your charge-out rate isn't your old wage
The biggest mistake new sole traders make is charging close to what they earned as an employee. If you were on $45/hr as a wage, charging $55/hr "to add a margin" will quietly send you broke — because as your own boss you now pay for everything the boss used to cover.
Your charge-out rate has to fund three things: the income you want to take home, plus every business cost (insurance, tools, vehicle, fuel, phone, software, accountant), plus the fact that you can't bill 40 hours a week. That's why a realistic tradie charge-out rate is usually 2 to 3 times an equivalent wage.
Billable hours vs hours worked
You might be on the job 45 hours a week, but you can't invoice all of them. Quoting, driving, buying materials, chasing payments, paperwork and dead time between jobs aren't billable. Most solo tradies bill 20–30 hours of a 40-hour week. The calculator uses billable hours on purpose — charging as if every hour is billable is the fastest way to undercharge.
The maths it's doing
- Revenue needed = income you want + yearly business costs + super
- Billable hours a year = billable hours/week × weeks worked
- Charge-out rate = revenue needed ÷ billable hours a year
It's deliberately conservative. Add a buffer on top for tax (see the tax set-aside calculator) and for profit beyond just paying yourself.
FAQ
What's a good hourly rate for a tradie in Australia?
It depends entirely on your costs and target income, but most solo tradies need a charge-out rate of $80–$150+ per hour (ex GST) to actually make a living once overheads and non-billable time are covered. Use the calculator with your own numbers rather than copying someone else's rate.
Should I charge by the hour or quote a fixed price?
Many tradies quote fixed-price per job (customers prefer the certainty), but you still need your true hourly rate to price those quotes properly. Work out your rate here, then build it into your quotes.
Do I include GST in my hourly rate?
Quote your rate ex-GST, then add 10% if you're registered. Don't bury GST inside the rate or you'll undercharge by 10%.
More free tools for tradies
General information for Australian businesses, not financial advice. Your real numbers depend on your trade, location and costs.