Labor Cost Percentage Formula for Retail (With a Worked Example)

Labor cost percentage tells you what share of every sales dollar went to payroll. It's the number most independent retailers reconstruct from memory at month-end — here's how to calculate it properly, and what tends to throw it off.

The formula

Worked example

$3,700 ÷ $18,500 × 100 = 20%. Whether that's healthy depends entirely on your margins and category — a 20% target is a common reference point for general retail, but it's a starting point to adjust from, not a rule to hit exactly.

Setting a target that actually fits your store

Rather than importing a generic "industry standard," work backward from your own gross margin: the lower your margin, the less room labor cost % has to eat into profit. A store running 35% gross margin can't sustain the same labor cost % as one running 55%. Track your own number over several months first, then set a target based on where you need it relative to your fixed costs — not a number pulled from a blog post (including this one).

Where the number quietly goes wrong

• Using base wages only. Leaving out payroll tax, workers' comp, and benefits understates true labor cost — fine for a rough daily check, misleading for monthly planning.
• Mismatched time periods. Comparing a payroll week that doesn't line up with your sales week (common with biweekly pay cycles) distorts the ratio in both directions.
• Ignoring salaried management time. If a store manager is salaried, their hours still need to be allocated into the period's labor cost — skipping this understates the real number.
• Reading one week in isolation. A single slow sales week will spike labor cost % even with identical staffing — look at the trend, not one data point.