How does the repair shop profit calculator work?

You enter what a job brings in, what parts cost, the labour time it takes, and your real monthly overhead — rent, power, software, admin salaries. The calculator allocates that overhead across your actual job volume, so the profit figure it returns is what you genuinely keep per job, not just price minus parts. For example, two shops charging the same price for a screen replacement can keep very different amounts once overhead is counted.