Contractor Job Calculator combines common job-costing math with Washington-specific tax guidance so contractors can see the relationship between contract price, sales tax, B&O tax, direct job costs, gross profit and margin.
The main calculator is designed for quick planning before or after preparing an estimate. It does not replace bookkeeping, tax preparation, legal advice or a contractor's own job-costing system.
Calculator inputs are processed in the browser. The site also links directly to Washington Department of Revenue resources so users can verify current tax rates and classifications.
This site is operated by Contractor Lead Exchange, LLC (CLX), a Southwest Washington contractor-matching and contractor-support business.
Tax-related pages are intended to summarize official Washington Department of Revenue guidance in plain language. Rules can change and project facts matter, so users should confirm current requirements with DOR or a qualified tax professional before billing a customer or filing a return.