Markup & Margin Calculator for Auto Repair

Parts pricing in auto repair is where most shop owners either make their money or leave it on the table. The industry operates on a parts pricing matrix: the lower the part cost, the higher the markup percentage. A $5 gasket might carry a 200–300% markup (sell for $15–$20), while a $500 transmission carries a 40–60% markup (sell for $700–$800). This matrix approach achieves a blended parts margin of 45–55% across all jobs. Labor pricing follows a different logic: shops set a door rate ($80–$150/hour depending on market) and bill based on flat-rate labor times published by manufacturers, not actual time spent. A skilled tech who completes a 3-hour flat-rate job in 2 hours generates $150 in labor revenue at only $50–$70 in tech cost, an effective margin of 50–65%. This calculator is pre-filled with auto repair benchmarks so you can model your parts matrix, labor rate, and blended margin to see whether your pricing actually covers your overhead and produces profit.