Service Categories

I charge an hourly rate in 15-minute increments. I categorize my labor as being off-site or on-site:
Off-Site

If I bring a computer back to my bench, I use a timer. I only track time when I am actively working on a task. I do not count idle time, such as when a large update is being installed.
On-Site

When I am at a customer's site, the timer starts when I arrive, and continues until the task is completed. 
Mileage

If a site is located outside of the New Braunfels city limits, I charge for mileage to and from the site.