Field notes
Why Service Firms Lose Track of Subcontractor Costs
Cleaning crews, design studios, and field maintenance teams often rely on subcontractors whose invoices lag the work by weeks. By the time the bill arrives, the job may already be invoiced to the client and closed in the ledger.
The bookkeeping consequence is predictable: costs hit a general expense account, margins look healthier than they were, and the next month’s profit swings the other way when someone finally reclassifies the charge.
During an aging and payables review, we match vendor statements against job codes and ask one blunt question—was the cost recognized in the same period as the related revenue? If not, we flag the gap and propose a posting rule the bookkeeper can follow without waiting for a year-end scramble.
Owners who fix this early spend less time explaining margin volatility to partners who only see the monthly summary.