CONSTRUCTION CHART OF ACCOUNTS
FOR SUBCONTRACTORS.
A construction-specific chart of accounts separates true cost of goods sold, direct labor, materials, equipment, and subcontracted work, from overhead, and includes the WIP-specific accounts, costs in excess of billings and billings in excess of costs, that percentage-of-completion accounting requires. A generic small-business chart of accounts has neither distinction built in.
A chart of accounts is the foundation everything else in the financial system sits on, and a generic one, built for a retail or service business, doesn't separate direct job cost from overhead the way construction accounting requires. It also has no accounts for the WIP-specific entries percentage-of-completion accounting needs, costs in excess of billings and billings in excess of costs, which means those positions get tracked outside the accounting system entirely, if they get tracked at all. Getting the chart of accounts structured correctly from the start is what makes accurate job costing and WIP reporting possible in the first place.
THE FIRST DISTINCTION THAT MATTERS.
True cost of goods sold for a subcontractor includes direct labor, materials, equipment costs tied to a specific job, and subcontracted work. These are the costs that job costing and gross margin calculations depend on being isolated cleanly from general overhead.
Overhead, office staff, general admin, equipment not tied to a specific job, has to sit in its own category so it doesn't distort job-level gross margin, and so it can be allocated to jobs deliberately rather than blended into COGS by accident.
WHAT PERCENTAGE-OF-COMPLETION REQUIRES.
Percentage-of-completion accounting requires two specific balance sheet accounts most generic charts of accounts don't include: costs and estimated earnings in excess of billings, representing underbilling, and billings in excess of costs and estimated earnings, representing overbilling.
Without these accounts built into the chart of accounts, the WIP position either doesn't get tracked in the accounting system at all, or gets reconstructed manually outside it every month, both of which introduce risk of the WIP schedule not reconciling to the actual financial statements.
WHAT MATTERS MOST.
WHERE IT GOES WRONG.
Common belief: "Our chart of accounts came standard with our accounting software, that should be fine."
What's actually true: Standard templates are built for general small businesses, not construction. They typically don't separate true job cost from overhead correctly and don't include the WIP-specific accounts percentage-of-completion accounting requires.
Common belief: "We track WIP in a separate spreadsheet, so it doesn't need to be in the chart of accounts."
What's actually true: Tracking WIP outside the accounting system creates a reconciliation risk between the spreadsheet and the actual financial statements. Building the WIP accounts into the chart keeps both in sync by construction.
Common belief: "Overhead and job cost being blended together is a minor detail."
What's actually true: It's not minor. Blended overhead and job cost is one of the most common reasons gross margin numbers look inconsistent from job to job in ways that don't reflect actual job performance.
FREQUENTLY ASKED.
