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Salary to Contractor Rate Calculator Australia

Moving from employment to contracting or sole trader? Calculate the exact hourly and day rate you need to charge to match your current employee salary package, including leave cover, super, overheads, and profit margin.

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Working for yourself as a sole trader or subcontractor (subbie) in Australia is a great way to take control of your hours and earnings. But many new contractors make the mistake of setting their rates too low by simply dividing their previous employee salary by standard hours. In Australia, an employee package includes super, paid leave, and other benefits that you have to cover out of your own pocket once you run a business under your own ABN.

Why Your Old Salary is Not Your Contractor Rate

When you are a salaried employee, your employer pays several hidden overheads on top of your base wage. When you make the switch to contracting, those expenses become your responsibility. To avoid taking a pay cut, your hourly rate needs to factor in:

  • Superannuation: Employers in Australia must pay an additional 12.0% super guarantee on top of your base salary. As a contractor, you have to pay your own super contribution.
  • Paid Sick Leave & Annual Leave: Salaried workers get 4 weeks of paid annual holidays (20 days) and 10 days of personal/sick leave. As a contractor, if you don't work, you don't get paid. Your rate must cover these unpaid days off.
  • Public Holidays: Australia has 11 to 13 public holidays per year depending on your state. Employees get paid for these, while contractors cannot bill on these days.
  • Workers Compensation Insurance: Employers cover workers comp to protect employees in case of injuries. As a sole trader, you must pay for your own Income Protection or Personal Accident Insurance.
  • Business Expenses: You have to buy and maintain your work vehicle, pay for tools, get public liability insurance, and cover admin costs like accounting software (Xero or MYOB).

How to Convert Employee Salary to Contractor Rate: Step-by-Step

Here is how to calculate the equivalent hourly rate manually using a realistic example of an employee on a $75,000 annual salary who wants to go solo.

Step 1: Calculate the Total Employee Package Value

Add up the true cost of what your employer was paying for you. This includes base salary, super, and basic statutory costs:

  • Base Salary: $75,000
  • Superannuation (12.0%): $9,000
  • Workers Compensation Insurance (2.0% default): $1,500
  • Long Service Leave Accrual (1.67%): $1,253
  • Total Package Value: $86,753

Step 2: Add Yearly Contractor Running Expenses

Add up what it costs to run your business for a year. A typical one-person trade business averages:

  • Tool purchases, upgrades, and testing gear: $2,000
  • Work ute/van running costs (fuel, rego, services, tyres): $6,000
  • Public Liability & Professional Indemnity Insurances: $2,000
  • Admin, bookkeeping, accounting fees, and phone: $2,500
  • Total Yearly Business Expenses: $12,500

Step 3: Include a 15% Business Profit Margin

Running a trade business requires a profit buffer to cover quiet weeks, upgrade tools, and pay taxes. Add a 15% profit buffer to your total operating costs:

Target Revenue = (Employee Package + Business Expenses) × 1.15
Target Revenue = ($86,753 + $12,500) × 1.15 = $114,141 per year

Step 4: Find Your Real Billable Hours

An employee is paid for 38 hours a week, 52 weeks a year (1,976 hours). However, as a contractor, your active billable hours are much lower. Subtract annual leave, sick days, public holidays, and non-billable time spent on travel, quoting, and paperwork:

  • Weeks worked per year (excluding 4 weeks annual leave): 48 weeks
  • Active workdays: 48 weeks × 5 days = 240 days
  • Subtract: 10 sick/carer days & 11 public holidays = 219 billable days
  • Gross hours: 219 days × 8 hours = 1,752 hours
  • Subtract 20% non-billable time (quotes, invoicing, travel): 1,402 billable hours

Step 5: Calculate the Contractor Hourly & Day Rate

Divide your target annual revenue by your real billable hours to find your base contractor hourly rate:

Base Hourly Rate = $114,141 / 1,402 billable hours = $81.41 per hour (excl. GST)

To convert this into a day rate for standard builder contracts:

Day Rate = $81.41 × 8 hours = $651.28 per day (excl. GST)

If you are registered for GST (required if business turnover exceeds $75,000), you must add 10% GST to your invoices. Your final client-facing rates will be **$89.55 per hour** and **$716.41 per day**.

ATO Rules for Self-Employed Contractors in Australia

Before you start taking on work, make sure you understand the Australian Taxation Office (ATO) rules:

  • ABN Registration: You must register for an Australian Business Number (ABN) to operate as a sole trader or company contractor.
  • GST Registration: If your target gross revenue (turnover) exceeds $75,000, you must register for GST within 21 days of meeting the threshold.
  • Personal Services Income (PSI): If more than 80% of your income comes from one client, the ATO may classify your income as Personal Services Income. This limits the business expenses you can deduct, ensuring employees are not misclassified as contractors for tax purposes. Always consult a certified accountant to review your contract structures.

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Frequently Asked Questions

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