How is construction bookkeeping different from regular bookkeeping?
The core difference is job costing. Regular bookkeeping tracks income and expenses by category. You see total revenue, total materials, total payroll for the month. Construction bookkeeping tracks all of that by individual project too. Every expense, every labor hour, every material purchase gets coded to a specific job so you know which projects made money and which ones ate your profit.
A restaurant or retail store can look at their monthly profit and know roughly how they’re doing. A contractor running four jobs simultaneously needs to know that the Smith addition made $8,000 while the Johnson renovation lost $2,000, even if the month looked profitable overall. Without job-level tracking, you’re flying blind.
Progress billing adds another layer of complexity. Most businesses invoice when work is complete or products ship. Construction contractors bill based on percentage of completion, often monthly on larger projects. Your books need to track what’s been billed versus what’s been earned versus what’s been collected. These three numbers are rarely the same.
Retainage complicates both receivables and payables. When a general contractor holds back 10% of your invoice until the project is complete, that money sits in limbo for months. You’ve earned it but can’t collect it yet. Standard bookkeeping doesn’t handle this well. Construction bookkeeping tracks retainage separately so you know your real cash position and don’t accidentally spend money you haven’t received.
Work in progress accounting matters for any job spanning multiple months. Revenue recognition gets complicated when you’re buying materials in January, doing work in February, billing in March, and collecting in April. Recognizing all the revenue when you bill doesn’t reflect reality. Neither does waiting until the job is fully complete.
Subcontractor management creates additional bookkeeping requirements. You need to track payments by sub, collect W-9s before paying anyone, and issue 1099s at year end. Miss these requirements and you’re facing IRS penalties. Regular businesses might have one or two contractors annually. Construction companies often have dozens working across multiple jobs.
The cash flow timing in construction is brutal compared to other industries. You buy materials before work starts, pay labor weekly, wait 30 to 60 days for payment after billing, then wait another 60 to 90 days for retainage release. Your books need to show this cash timing clearly or you’ll run short without warning despite having plenty of work.
Equipment costs also need different treatment. Allocating equipment expenses to specific jobs, tracking depreciation on machinery, and managing maintenance costs all flow into job costing. Without this, you underestimate what each project actually costs you.
If you’re using generic bookkeeping methods or working with someone unfamiliar with construction, you’re probably missing critical information about your business. A bookkeeper near Fayetteville who understands job costing and construction workflows can set up your books so they actually tell you which jobs are profitable and which types of work to pursue or avoid.
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