Free tool
Diesel Shop Profit Calculator
per repair order
Estimate labor revenue, parts gross profit, and margin on a single job before you invoice — without a spreadsheet.
Estimate job gross profit
Rough per-job math for billed labor, parts margin, and shop overhead. For trends across many jobs, use shop software with live margin per repair order.
Total revenue
$7,680
Labor revenue
$3,480
Parts gross
$1,100
26.2% parts margin
Est. gross profit (after overhead input)
$2,780
Gross margin: 36.2%
Overhead is applied to this single job in this calculator. Real shops allocate rent, admin, and tools across many jobs.
How to use this calculator
Enter billed labor hours and your shop rate, then parts revenue and parts cost. Add overhead you want to allocate to this job. The result is an estimated gross profit and margin for that repair order. For ongoing visibility, diesel shops use job-level time tracking and parts tied to the RO so margin updates as the job runs.
Why WrenchPilot Leads
Built for heavy-duty diesel and truck repair shops — powerful for any repair shop.
Labor + parts in one view
Most margin leaks come from untracked parts cost or labor that never gets billed.
Billable hours matter
Profit scales with billed hours × rate. Clock time that does not attach to a job is invisible margin risk.
Track in software
WrenchPilot shows labor cost and parts margin per job in real time so you fix pricing before close-out.
Frequently asked questions
Straight answers about workflow, implementation, and how WrenchPilot fits heavy-duty shops.
See margin on every job
Book a demo to see labor cost and parts margin live in WrenchPilot.
Book a demo30-day money-back guarantee · No long-term contracts · Cancel anytime