Auto Dealerships: How to Calculate Your Payroll Costs (2026)

Managed payroll by headcount for an auto dealership

10 employees: $450 a month, $5,400 a year; 25 employees: $1,125 a month, $13,500 a year; 50 employees: $2,250 a month, $27,000 a year; 100 employees: $4,500 a month, $54,000 a year. Every row is $45 per employee per month, all-inclusive, inside the payroll software you already use, with no monthly minimum, so the per-employee cost is the same at 10 as at 100. Nothing in the auto dealership setup, front-end and back-end commission structures, flat-rate tech pay, F&I chargebacks and draw-against-commission, is billed as an add-on.

The employer-side tax that rides on every auto dealership wage

At the May 2025 national median for automotive service technicians and mechanics, $50,620 a year or about $24 an hour, the employer share of Social Security and Medicare is $3,872 per employee per year and FUTA is $42 after the state credit, before state unemployment at the assigned rate. Those costs are the same whoever runs payroll; the calculator question is only who does the work and who carries the error.

Under IRC section 132(j)(3), qualified demonstration use of a dealership vehicle by a full-time automobile salesperson is a working condition fringe excluded from wages, so the dealer does not withhold income tax or pay FICA on that value. The full exclusion requires use within the dealer's sales area (safe harbor radius of 75 miles) and personal use outside working hours, less commuting, averaging no more than 10 miles per day.

The in-house line in the calculation

BLS OEWS May 2025: payroll and timekeeping clerks, national median $58,260, mean $59,630. Add roughly 30 percent for benefits and employer taxes, about $75,738, before the software that person runs, and set it against the headcount rows above. Managed payroll stays under that loaded figure until about 140 employees.