Contractor Quote Markup Calculator
Add overhead, contingency, profit and GST to a base cost to land on a defensible quote.
General tool only. This calculator gives estimates based on the values you enter. Always check your contract terms and any state-specific rules before relying on the figures.
Include GST in quote
Results
Enter your quote costs to calculate a recommended quote.
How it works
Behind the numbers
Stack each cost component, then layer contingency, profit and GST on top. Adjust the percentages until the price feels right for the risk on the job.
Formula
The maths, written out
Base = Labour + Material + Sub + Overhead Subtotal = Base × (1 + Contingency%) Profit = Subtotal × Profit% Quote = Subtotal + Profit Inc. GST = Quote × 1.10
Worked example
A quick scenario
$91,000 base + 5% contingency ($4,550) = $95,550 subtotal; +15% profit ($14,333) = $109,883 quote — $120,871 with GST.
Frequently asked
Is this calculator free to use?
Yes. All calculators on Contractor Calc are free and do not require sign-up.
How accurate are the results?
The calculators use standard formulas. Results are estimates only and depend on the values you enter. Always check against your contract.
Can I export the results?
Most calculators include a download or copy-to-clipboard option for sharing with clients or storing in your records.