Hiring temp staff costs more than the hourly rate. This free calculator adds statutory holiday pay, your employer on-costs (NI, pension, etc.) and any agency margin so you can budget the real figure. All numbers stay in your browser.

Pay rate (£ per hour)

Hours per week

Number of weeks

Number of workers

Employer on-costs (%)

Employer NI, pension, app levy etc. Set to your current rate.

Agency margin (%)

Set to 0 if hiring direct.

Holiday pay is calculated at the statutory 12.07% method for irregular-hours/temporary workers (5.6 weeks' leave). Employer on-costs and agency margin are the figures you enter. Illustrative only — confirm current HMRC NI thresholds/rates and your contract terms. Updated 2026.

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How temporary staff cost is calculated

Gross pay = hourly rate × hours × weeks × workers.
Holiday pay = 12.07% of gross pay (statutory leave for irregular-hours workers).
Employer on-costs = your % (NI, pension, etc.) applied to pay + holiday.
Agency margin = your % applied to the total worker cost.