Auto Repair: Effective Labor Rate

Excel Formulas › Auto Repair Shop

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Your posted door rate is not what you actually earn. Divide real labor revenue by the hours you billed and you see the effective labor rate — after discounts, comebacks, and waived time.


Quick formula: Labor revenue divided by hours billed:
=B2/C2

$4,500 of labor over 50 billed hours is a $90 effective rate — the honest number to compare against your posted rate.

Functions used (tap for the full reference guide):

The example

Three technicians' labor revenue against the hours they billed.

ABCD
1TechLabor revenueHours billedEffective rate
2Tech A$4,50050$90.00
3Tech B$6,00060$100.00
4Tech C$3,40040$85.00

The formula

A single division reveals the true rate:

=B2/C2 // labor $ / hours billed

How it works

The effective rate strips away the marketing number:

  1. B2 is the actual labor dollars collected — after any discounts or waived time.
  2. C2 is the hours you billed customers for that labor.
  3. Dividing them gives what each billed hour truly earned, which is usually below the posted door rate.

If your effective rate trails your door rate badly, discounts and comebacks are quietly eroding margin.

Try it: interactive demo

Interactive

Enter labor revenue and hours billed.

Variations

Compare to door rate

Show the gap as a percentage of your posted rate.

=B2/C2/DoorRate-1

Pitfalls & errors

Use labor revenue only — including parts revenue inflates the rate and hides labor leakage.

Bill hours, not clock hours: flat-rate shops should divide by the hours sold, not the time the tech spent.

Practice workbook

📊
Download the free Auto Repair: Effective Labor Rate practice workbook
Edit the yellow Labor revenue and Hours billed cells; the Effective rate column recalculates.

Frequently asked questions

How is this different from my door rate?
The door rate is what you advertise per hour. The effective rate is what you actually collected per billed hour after discounts and waived time — usually lower.
Should parts be included?
No. Keep parts out so the number reflects labor performance only.

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Related formulas: Auto Repair: Labor Efficiency · Auto Repair: Parts to Labor Ratio · Overtime Pay Calc

Function references: Division