Enter last month's numbers. The math is shown line by line so you can check it. Nothing you type leaves this page.
Line 1: Fully loaded labor cost
Line 2: Total monthly cost your labor must cover
Line 3: After the parts gross profit credit
Line 4: Required labor revenue at your target margin
Your labor rate floor
The floor is what last month's numbers say you need per billed hour before your target margin means anything. If your market ceiling sits below this floor, the math has not failed. It has told you something nobody else will.