What share of revenue your payroll takes — or, run the other way, the payroll a target share allows you to carry. Nothing stored.
The formula, both directions
payroll % of revenue = monthly payroll / monthly revenue x 100
payroll budget = monthly revenue x target %
The forward direction describes the present; the reverse direction is the one that prevents mistakes. Deciding a target share first and deriving the payroll budget from it turns “can we afford another person” from a feeling into arithmetic — and the budget has to hold in a normal-to-weak month, because revenue flexes and payroll does not. What one specific hire adds to the payroll side, fully loaded, is the employee cost calculator's job.
What the benchmarks actually say
The range quoted almost everywhere is 15 to 30 percent of gross revenue. It is worth knowing what that range is: a rule of thumb that payroll providers and finance writers repeat, not a measured statistic with a study behind it. It is a sane starting point for a product business and misleading for a service one, where payroll is the cost of the thing being sold. The figures that do carry a named source point the same direction: the National Restaurant Association's 2024 Restaurant Operations Data Abstract put median salaries and wages including benefits at 36.5 percent of sales for full-service restaurants and 31.7 percent for limited-service — comfortably above the rule of thumb, in an industry that is functioning as designed.
So use the range as a prompt, not a verdict: if you are far outside it, know why. A consultancy at 45 percent has a business model; a shop at 45 percent has a problem. The reference ranges for the other numbers founders track — runway, churn, burn multiple and the rest — are collected with their sources on the benchmarks page.
One definitional trap to avoid: decide whether your payroll figure is gross pay or the loaded cost with employer taxes and benefits, and keep it consistent. The loaded version — the true labor cost — is typically 20 to 30 percent higher, and the labor cost calculator computes it for a whole team, hourly and salaried staff together.