Holiday Entitlement Calculator
Calculate your UK statutory holiday entitlement for 2025/26. Work out pro-rata leave for part-time and zero-hours workers, and check your holiday pay rate including regular overtime and commission under the 52-week reference period.
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How to Use This Calculator
Holiday Entitlement tab
Enter the number of days you work per week (default 5 for full-time) and select your nation to see the correct bank holiday count. Toggle the bank holiday breakdown to see how your 5.6 weeks splits between bank holidays and additional leave. Use "More options" to calculate a part-year entitlement if you started or left partway through the leave year.
Part-Time & Irregular tab
Choose whether to calculate by hours per week or shifts per week. For hours-based calculation, enter your weekly hours and your workplace's full-time hours to get a pro-rata entitlement. Tick the zero-hours box for workers on irregular contracts — the calculator uses the statutory 12.07% accrual method and shows your rolled-up holiday pay entitlement.
Holiday Pay tab
Enter your basic weekly pay, then optionally include regular overtime and commission. The calculator works out your daily holiday pay rate based on the 52-week reference period, and shows how much more you should receive per day compared to basic pay alone.
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The Formula
UK statutory holiday entitlement is calculated under the Working Time Regulations 1998:
Part-time pro-rata = (your days per week / full-time days) × 5.6 weeks
Example: 3 days/week × 5.6 = 16.8 days
Zero-hours accrual = total hours worked × 12.07%
Where 12.07% = 5.6 / (52 − 5.6)
Holiday pay (daily) = average weekly pay ÷ working days per week
Average weekly pay = mean of last 52 worked weeks
(includes basic pay + regular overtime + commission + regular bonuses)
The 5.6-week entitlement includes both the 4 weeks mandated by EU Working Time Directive (now retained EU law) and the additional 1.6 weeks added by UK domestic legislation. The 28-day cap means workers on 6 or 7-day weeks still receive a maximum of 28 statutory days.
Example
Sarah — Office Manager, works 3 days per week
Sarah is a part-time office manager earning ยฃ400/week (basic), with ยฃ30/week regular overtime and ยฃ20/week average commission. She works 3 days per week in England.
Holiday Entitlement (pro-rata)
Holiday Pay
If Sarah's employer only paid her basic rate (ยฃ400 / 3 = ยฃ133.33/day), she would lose ยฃ16.67 per holiday day, or ยฃ280.06 per year. Since the British Gas v Lock ruling, employers must include regular overtime and commission in holiday pay calculations.