The hourly billing rate is the key performance indicator for every auto repair shop: It determines whether each hour of work generates profit. If you set it too low, your business will operate at a loss; if you calculate it correctly, you ensure the profitability of your business. Here’s how to calculate it step by step.
Key Takeaways
- The hourly billing rate covers labor costs, overhead, and the projected profit.
- What matters is the number of productive (billable) hours—not the number of hours worked.
- Realistic capacity utilization is often well below 100 %.
- The software automatically analyzes actual times and workload.
What is the hourly rate?
The hourly billing rate is the amount a repair shop charges per productive hour of work to cover all costs and generate a profit. It differs from an employee’s base hourly wage because it also includes a portion of overhead costs and a profit margin.
How to Calculate Your Hourly Rate
The basic formula is:
Hourly billing rate = (labor costs + overhead + profit) ÷ productive hours
Follow these four steps:
- Calculate labor costs: Gross wages of productive employees, including employer contributions.
- Record overhead costs: rent, utilities, tools, insurance, administrative expenses, and depreciation.
- Calculating productive hours: Hours present minus vacation, sick leave, setup time, and unproductive time—multiplied by the realistic utilization rate.
- Add a profit margin: Calculate an appropriate profit margin.
Here’s a rough calculation: If the annual cost per technician is €60,000 (including a proportionate share of overhead costs and profit) and the number of productive hours is 1,400, this results in a rate of approximately €43—plus your profit margin and sales tax.
Why Capacity Utilization Is Crucial
The most common error in cost estimation is assuming too many productive hours. Setup times, waiting times for parts, internal tasks, and idle time significantly reduce the number of billable hours. Knowing your actual capacity utilization allows you to make more realistic cost estimates. With CATAMA’s workshop software and time tracking, you can see exactly how many hours were actually billed per job.
Quickly Calculate Your Hourly Rate
Our free hourly rate calculator for auto repair shops provides an initial estimate. For ongoing billing, simply transfer the rate to your auto repair invoicing software.
Frequently Asked Questions
How do you calculate the hourly rate?
The hourly billing rate is calculated by dividing the sum of labor costs, overhead, and profit by the number of productive (billable) hours.
What are productive hours?
Productive hours are the hours of work that can actually be billed to the customer—that is, hours worked minus vacation, sick leave, setup time, and unproductive activities.
Why is my hourly rate too low?
Often, too many productive hours are assumed, or overhead costs are underestimated. A realistic capacity utilization rate and full overhead costs usually result in a higher, cost-covering rate.
Does software help with cost estimates?
Yes. The software tracks actual hours worked per job and displays the actual workload, which makes it possible to calculate the hourly billing rate more realistically.
