Pro-Rata Holiday Calculator
Calculate your holiday entitlement when starting or leaving a job part-way through the leave year. Pro-rata calculations ensure you receive the correct proportion of annual leave based on the time you'll actually work during the leave year.
How Pro-Rata Holiday is Calculated
The calculation uses calendar days to determine your entitlement. Divide the number of days you'll work in the leave year by the total days in the leave year, then multiply by your full annual entitlement. For example, if you work 3 days per week and start mid-year, your entitlement is proportionally reduced.
When You Need This Calculator
- Starting a new job part-way through the leave year
- Leaving employment before the leave year ends
- Changing from full-time to part-time (or vice versa)
- Starting or leaving during a probation period
- Any mid-year change affecting your working pattern
Understanding the Calculation
The calculator accounts for your start date, leave date (if applicable), working days per week, and full annual entitlement. Results are rounded up to the nearest half day as required by UK employment law. Bank holidays may or may not be included depending on your contract type. Source: GOV.UK Holiday Entitlement Rights
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Frequently Asked Questions
How is pro-rata holiday calculated in the UK?
Pro-rata holiday is calculated using calendar days. Divide the number of days you'll work in the leave year by the total days in the leave year, then multiply by your full entitlement. For example, if you work 3 days per week and start on 1 July: (275 ÷ 365) × 16.8 = 12.6 days. Always round UP to the nearest half day.
When should I use a pro-rata calculator?
Use a pro-rata calculator if you started or are leaving your job mid-way through the leave year (April to April in the UK). Your holiday entitlement is reduced proportionally based on how much of the year you'll be working. See GOV.UK for full details.
Does the 28 days include bank holidays in pro-rata calculation?
Yes, the pro-rata calculation uses your full 28 days (or pro-rata equivalent for part-time workers) which may or may not include bank holidays depending on your employer's policy (Model A vs Model B).
How do I calculate holiday if I started mid-year?
Calculate the number of days from your start date to the end of the leave year. Divide by 365 and multiply by your full annual entitlement. UK law requires you round UP to the nearest half day — you cannot lose entitlement from rounding.