We Switch Payroll
12.07% is not a rate you may always use

Holiday pay, done the way the rules actually say

Since the 2024 reforms there are three different correct answers depending on what kind of worker you are looking at — and rolled-up 12.07% is unlawful for most of them. Pick the worker, get the method, see the working.

Total actual hours, not contracted hours.
£
Excluding any holiday pay already added.
£
Used to value the accrued hours.

One free calculation per company. Company number and a work email, and the accrual runs on the same engine we use in payroll — including the unpaid weeks most calculators average in as zero.

The working LIVE

Holiday is the one that gets backdated.

Underpaid holiday is a two-year claim, and it compounds quietly across a workforce before anyone notices. A payroll that accrues entitlement every period — and knows which of the three methods each worker is on — never has that conversation.

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Free either way: the calculators stay free and stay in your browser.

The other calculators

Take-home payTax, NI and student loan on a wage Employer costWhat a hire really costs you Auto-enrolmentWho must be enrolled, and for how much Minimum wageAre you actually compliant? Statutory paySSP, SMP, SPP and the rest CIS deductions20%, 30% or gross
5.6
Weeks statutory leave
12.07%
Rolled-up rate (irregular only)
52
Weeks in the averaging window
2 yrs
Backdated claim window

How to read this. Rolled-up holiday pay (the 12.07% uplift — source: gov.uk, holiday pay and entitlement reforms from 1 January 2024) became lawful again from 1 April 2024, but only for irregular-hours and part-year workers. Paying it to a regular full-time worker does not discharge the obligation — they are entitled to 5.6 weeks of actual leave, paid at their normal rate. The 52-week average applies where pay varies; weeks with no pay at all are skipped and the window reaches back further, which is the Harpur Trust correction. This tool computes; it does not advise. Complex cases — term-time-only staff, sickness overlapping leave, carry-over — go to a qualified adviser.