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25 min read
8 chapters

The Complete Guide to Job Costing for Contractors

Master job costing to protect your margins. Learn to track labor, materials, and overhead accurately with real examples and practical strategies.

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Chapter 1

Why Job Costing Matters

Most contractors don't know their true job costs until it's too late. They estimate a job at 20% profit margin, only to find out months later they actually made 5%—or lost money entirely. Job costing is the discipline of tracking every dollar spent on a project as it happens, so you can: - Catch budget overruns before they eat your profit - Make informed decisions about change orders - Price future jobs accurately based on real data - Identify which types of work are actually profitable Without job costing, you're flying blind. With it, you have the data to run a profitable business.

Key Takeaways

Track costs in four categories: labor, materials, equipment, subcontractors
Calculate loaded labor rates including all burden costs
Allocate overhead to jobs based on labor hours
Review job costs weekly to catch problems early
Document and track change orders separately
Do post-job analysis to improve future estimates

Automate Your Job Costing

Our AI Accounting Agent tracks job costs automatically from your invoices, timesheets, and purchase orders. Know your margins in real-time.