Tatnall Service Gain Efficiency Calculator
Enter your actual service department numbers and test the impact of improving utilisation, productivity and recovery rate. This shows the real-world monthly gain from small efficiency improvements.
Enter Your Actual Service Data
Use one month of service department data. The calculator then models what happens when technician utilisation, productivity and recovery rate improve.
Set Your Improved Target
Adjust the targets below to see the commercial gain from better workshop control, improved productivity and stronger labour recovery.
What Good Looks Like
These benchmarks help you compare your current service department performance against high-performing operational standards. Use them as a guide when setting your improved targets below.
Current Position
Improved Position
What This Means
Improve your key service efficiency metrics and the calculator will show the estimated monthly labour sales and profit gain.
How To Increase The Gain
The root cause is rarely one number. Service gain usually comes from better control of idle time, stronger workshop loading, improved advisor process and disciplined labour recovery.
Increase Utilisation
- Reduce technician idle time.
- Improve diary loading and job allocation.
- Control waiting time between jobs.
- Review no-shows, parts delays and job preparation.
Increase Productivity
- Improve sold hours from hours worked.
- Review technician clocking discipline.
- Reduce lost time and workshop interruptions.
- Use daily performance reviews with technicians.
Increase Recovery Rate
- Review discounting and labour rate leakage.
- Improve estimate accuracy.
- Train advisors to present value confidently.
- Monitor retail, warranty and internal labour mix.
Protect Gross Profit
- Track labour sales against cost of sale.
- Control overtime and idle cost.
- Review labour GP daily or weekly.
- Act early before month-end damage is locked in.
Calculator Logic
Utilisation % = Hours Worked ÷ Hours Attended
Productivity % = Hours Sold ÷ Hours Worked
Overall Efficiency % = Hours Sold ÷ Hours Attended
Recovery Rate = Labour Sales ÷ Hours Sold
Labour Sales = Hours Sold × Recovery Rate
Labour Cost of Sale = Hours Worked × Average Labour Cost
Labour Gross Profit = Labour Sales − Labour Cost of Sale
Department Profit = Labour Gross Profit − Department Expenses
Want Tatnall To Review Your Figures?
Submit your service efficiency figures and receive a free operational review discussion.
Book A Review Call