Reports & profitability
Plumbing Job Profitability Worksheet: Start With Direct Costs
A job profitability worksheet starts with consistently defined job revenue and the direct costs assigned to that work. The remainder is a direct-cost contribution, not automatically net profit: overhead, taxes, financing, and other costs may still need to be accounted for.
In this guide
Define the revenue figure
Use the amount associated with the job under your chosen reporting method, excluding sales taxes collected for authorities where appropriate. Record whether you use invoiced revenue, recognized revenue, or another accounting-approved basis.
Do not mix cash received with invoice value without explanation. A deposit can arrive before the work, and an unpaid invoice can exist after completion.
Ask the person responsible for bookkeeping to confirm the reporting basis, especially for work spanning periods, credits, or progress billing.
Gather the direct costs
| Cost category | Evidence to use |
|---|---|
| Direct labor | Actual job hours and an appropriate cost rate |
| Materials | Job-assigned purchases or supported material usage |
| Subcontract work | Related approved supplier charges |
| Other direct costs | Costs genuinely attributable to the job |
Keep estimated and actual costs distinct. A pricebook allowance can help estimate work, but it does not prove the actual cost incurred.
Avoid double-counting a cost. If payroll burden is already in the labor rate, do not add the same burden again under another category.
Use the direct-cost calculator
The calculator subtracts direct labor, materials, and other direct costs from the entered revenue. It then divides that contribution by revenue to show a percentage. It does not calculate tax liability or full-company net profit.
In a fictional example, revenue is $1,200, direct labor is $400, materials are $250, and other direct costs are $100. The remaining direct-cost contribution is $450, or 37.5% of revenue.
The business may still need that $450 to cover office costs, vehicles, insurance, software, and other expenses not already assigned. Do not describe it all as money the owner can take home.
Compare estimate and actual on the same basis
Job profitability review
Job / invoice references: [IDs]
Revenue basis and amount: [definition/value]
Estimated direct costs: [labor/materials/other]
Actual direct costs: [labor/materials/other]
Direct-cost contribution: [calculation]
Costs excluded from this worksheet: [list]
Reason for meaningful variance: [evidence]
Action for future estimating or execution: [owner/task]
If the estimate used a loaded labor rate and the actual report uses wages only, the variance is not a fair comparison. Align the definitions before drawing conclusions.
Investigate specific causes rather than blaming the price
Review scope changes, unrecorded material usage, repeat visits, unusual access, and errors in time assignment. A lower-than-expected contribution can arise from incomplete records as well as genuine operating issues.
Separate an authorized scope addition from extra work performed without a clear approval record. The appropriate commercial and process response may differ.
Use the result to improve decisions
Look for recurring, evidence-supported estimating or handoff problems across comparable jobs. Do not treat one unusual job as an industry benchmark.
GoPlumber's estimates, jobs, and invoices can form part of this review. Verify how actual costs and exports are handled in the current product; this worksheet does not imply a native full job-costing or accounting module.
Sources and editorial notes
Product and documentation references checked September 29, 2026. GoPlumber publishes this guide about its own product category. Examples and templates are original illustrative material, not customer case studies or market benchmarks. Confirm current vendor terms before acting.