Prison officer annual leave calculator

What this prison officer annual leave calculator does

Annual leave looks simple (25 days, rising with service) until you work a rolling shift pattern. A week off a rota of 10 or 12-hour shifts does not cost the same number of 'days' as a week off a Monday to Friday job, and whether your leave is counted in hours or in days changes the answer. This annual leave calculator converts your entitlement into hours, weeks and rostered shifts, tells you how much a planned holiday will take from your balance, and checks the total against the statutory minimum.

We are open about the limits. HMPPS describes its offer as 25 days annual leave increasing to 30 with long service, with the ability to carry over, buy or sell days. The service length at which the 30 days begins, how many privilege days an establishment grants, the leave year, and whether leave is held in hours or days are not published on the sources we use, so each of them is an editable input here, labelled as yours to confirm.

The rules we can state

• Statutory minimum. Almost all workers are entitled to 5.6 weeks' paid holiday a year. For a five-day week that is 28 days, and statutory leave is capped at 28 days (GOV.UK).
• Bank holidays. An employer may count bank holidays within statutory leave rather than give them separately (GOV.UK).
• HMPPS summary. HMPPS says officers get 25 days annual leave rising to 30 with long service, can carry leave over and can buy or sell days, alongside maternity, paternity and adoption leave and special leave.
• Scotland. The Scottish Prison Service says leave rises to 42 days after five years' service on its rewards page. That is the SPS's own wording and the days are not directly comparable with England and Wales; check how public holidays are counted.

Turning days into hours and shifts

For a 37-hour contract the working day is 7.4 hours (37 divided by 5). 25 days is therefore 185 hours, which is five weeks of contracted time. At 10 hours a shift that is 18.5 rostered shifts; at 12 hours it is about 15.4. The calculator does this for you and reports the answer in weeks, hours and shifts so you can plan against your actual roster.

Why it matters: if your leave bank is held in hours, a 12-hour shift uses about 1.6 of the 7.4-hour 'days' while a 7.4-hour shift uses exactly one. Two officers with the same 25 days can end up with different numbers of shifts off. If your establishment counts each shift off as a full day regardless of length, the answer flips. Switch between 'hours' and 'days' to see both, then ask which applies to you.

Planning a holiday

Enter how many weeks you want off. The calculator takes the hours you would have worked in that period from your contract, converts them into shifts using your shift length, and shows how many leave days it uses and what is left. A two-week holiday on a 37-hour contract is 74 scheduled hours: in an hours-based bank that is 10 days of leave, leaving 15 of 25.

Remember that leave is only half the planning question. Shift patterns and rest days interact with leave requests, and establishments have their own rules on how and when you can book. See our guides on leave and time off and shift patterns.

Part-year starters and leave you bring in

If you started part-way through the leave year, enter the months you have left and the calculator pro-rates your entitlement. Use 'Carried over' for days you brought in and 'Bought or sold' for any days you buy or sell. The way HMPPS prices and approves bought and sold days is not covered in our sources, so the calculator only adds or removes the days; it does not guess the cost.

What a day of leave is worth

Annual leave is paid time off, so taking it does not cost you money. But the value of a day is useful when you are weighing up selling leave or working a rest day: it is your annual pay divided by your contracted days. For a National Band 3 officer on the top pay point of a 37-hour contract (£36,778) it is about £141 a day gross. If you ever consider selling days, compare the offer with that number and ask what the payment is taxed at.

Common leave-planning mistakes

• Counting days when your bank is in hours. If leave is held in hours, a week of 12-hour shifts can cost more 'days' than the same number of shifts looks like on a calendar. Check which system applies before you book.
• Forgetting public holidays when you plan the year. If a public holiday falls on a day you are rostered, check whether it is paid as a holiday, a rest day or neither under your terms.
• Leaving it all until the end of the leave year. Rosters are tight in the summer and before Christmas. Spread your leave and see how much remains each quarter.
• Assuming carry-over is automatic. HMPPS says leave can be carried over, but the limits are set locally. Ask before you rely on it.
• Not planning around training and rest days. Courses and mandatory training can limit when leave is approved.

Limits and checks

• Pay for the 'value of a day' uses the published 2026/27 PSPRB tables for England and Wales or your own figure.
• Public holidays default to 8, the usual number of bank holidays in England and Wales. Your establishment may treat them and privilege days differently.
• It is a planning aid. Your contract, HR system and local policy decide your balance.