Tools · UK statutory

UK holiday entitlement calculator

Calculate statutory paid leave under the Working Time Regulations 1998 — for regular-hours, irregular-hours and part-year workers, including the 12.07% accrual method introduced by the 2024 reforms. Free. No login. The maths is shown next to the answer.

Worker type
5.6 weeks × days/week = annual statutory minimum (capped at 28 days).
12.07% of hours worked = statutory accrued holiday hours.
If your contract is silent, the worker's start date is the leave-year anchor (gov.uk).
Some employers give more than statutory. If yours does, enter the contractual number.

The rules this calculator follows

  • 5.6 weeks statutory minimum — Working Time Regulations 1998, Reg 13 (4 weeks EU origin) + Reg 13A (1.6 weeks UK addition). Capped at 28 days for a 5-day worker.
  • Pro-rata for part-time — 5.6 × days worked per week. So 3 days/week = 16.8 days.
  • 12.07% accrual for irregular hours and part-year workers — applies to leave years starting on or after 1 April 2024 under the 2024 reforms. 12.07% derives from 5.6 weeks ÷ (52 − 5.6) = 5.6 ÷ 46.4.
  • Bank holidays are NOT separately statutory — they may or may not be inside the 5.6 weeks, depending on contract.
  • Sources verified 2026-09-21 against gov.uk, legislation.gov.uk and Acas. We re-verify quarterly.

Automate this across every employee

WagePerks tracks holiday entitlement and absence on HR Starter — £0 / month for up to 25 employees. For irregular-hours and part-year workers, 12.07% holiday accrual comes with the Shift Management bolt-on: £49 a month for your first team, plus £39 for each additional team. Prices exclude VAT.

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