How is construction accounting different from regular bookkeeping?
Regular bookkeeping records income and expenses into categories like materials, labor, advertising, and rent. At the end of the month you can see whether the company was profitable overall. That works fine for a retail shop or a consulting firm. It does not work for construction.
Construction accounting is built around jobs. Every dollar of income and every dollar of expense gets assigned to a specific project. You’re not just tracking “materials” as a lump category. You’re tracking materials for the Thompson bathroom remodel separately from materials for the Garcia roof replacement. The goal is knowing whether each individual job made or lost money, not just whether the company had a good month.
This is called job costing, and it changes everything about how you set up your chart of accounts, enter transactions, and read your financial reports. Within each job you track labor, materials, subcontractor costs, equipment, permits, and overhead. You compare actual costs against your original estimates so you can spot problems while a project is still active instead of finding out you lost money after it’s done.
Work in progress reporting is another major difference. A WIP schedule shows the financial status of every open job at a given point in time. It tells you whether you’ve billed more than you’ve earned (overbilled) or earned more than you’ve billed (underbilled). Overbilling feels great because cash is coming in, but it means you owe work you haven’t done yet. Underbilling means you’ve done work you haven’t collected for. Neither situation is visible in standard bookkeeping without WIP tracking.
Retainage is something most regular businesses never deal with. In construction, the customer or general contractor often holds back 5% to 10% of each payment until the project is finished. That money is technically owed to you but you can’t collect it yet. It has to be tracked separately from normal accounts receivable. Same goes for retainage you hold from your subcontractors. Miss this and your financial reports will overstate or understate what you’re actually owed.
Revenue recognition is more complex too. A regular business sells a product or performs a service and records the income. Construction projects can span weeks or months. You might receive a deposit before work starts, progress payments during the project, and a final payment with retainage released after completion. Recognizing revenue at the right time matters for accurate financial statements and for tax purposes.
Change orders add another layer. When the scope of a project changes mid-build, the original budget and contract amount change too. Your books need to reflect the updated numbers so your job cost reports still mean something. A bookkeeper who doesn’t understand change orders will either ignore them or record them incorrectly.
The practical takeaway for contractors in the Tampa Bay area is that general bookkeeping software and methods can handle some of this, but only if someone configures them properly and enters data with job-level detail. QuickBooks Online can do job costing, but it doesn’t do it automatically. Someone has to assign every transaction to the correct job and cost category every time.
Most contractors who feel like they’re flying blind financially aren’t using bad software. They’re using regular bookkeeping methods for a business that needs construction accounting. The numbers they’re looking at don’t answer the questions that actually matter, like which jobs are profitable and which crews are costing more than they should.
If your books just show total revenue and total expenses without breaking it down by project, you’re running a construction company with retail bookkeeping. Our Tampa Bay bookkeeping services are set up to handle the job-level tracking that construction businesses actually need so your financial reports give you information you can act on.
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