UK Holiday Entitlement

It surfaces during a year-end leave audit. You pull the reports, cross-reference the balances, and realise three part-time employees were underpaid holiday for the entire year.

Not because anyone ignored the law, but because the payroll system was still calculating their entitlement using a method the government changed two years ago.

Holiday entitlement in the UK looks straightforward until you try to run it accurately for a workforce that includes part-timers, irregular hours workers, and employees returning from extended leave. The statutory minimum is 5.6 weeks.

The complexity sits in how you calculate those weeks, what counts as pay when someone takes them, and what happens to days they never used.

This guide covers how UK holiday entitlement actually works in practice, where the calculation traps sit, and what changed in April 2026 that makes getting it wrong considerably more expensive.

If you manage UK payroll or oversee absence policy, these are the rules that matter.

What is UK statutory holiday entitlement?

In our review of how employers calculate entitlement across different contract types, we find the irregular-hours provisions introduced in 2024 generate the most compliance uncertainty for businesses using zero-hours or variable-shift arrangements.

Every worker in the UK is legally entitled to 5.6 weeks of paid holiday per year. For someone working five days a week, that translates to 28 days. The entitlement is set by the Working Time Regulations 1998 and applies from day one of employment.

There is no qualifying period.

That 5.6 weeks is not a single block in legal terms. It is built from two separate entitlements that carry different rules. The first 4 weeks come from the EU-derived Working Time Directive (Regulation 13 leave).

The remaining 1.6 weeks are a UK-specific addition (Regulation 13A leave).

This split matters when you reach carry-over rules, holiday pay calculations, and enforcement.

The legal protections differ between the two portions, and most payroll disputes trace back to treating them as identical.

The entitlement is capped at a statutory maximum of 28 days. A worker on a six-day week still gets 28 days, not 33.6.

Employers can offer more than the statutory minimum through contracts or company policy, but the legal floor does not move above 28 days regardless of working pattern.

For payroll teams, the operational point is that this entitlement applies to all workers, employees. Agency workers, zero-hours contract staff, and casual workers all qualify.

If someone is classed as a worker under UK employment law, they accrue holiday from their first shift.

How do you calculate holiday entitlement for part-time and irregular hours workers?

For part-time workers on fixed schedules, the calculation is simple. Multiply the number of days worked per week by 5.6.

A three-day-per-week employee gets 16.8 days of statutory holiday per year. A four-day worker gets 22.4 days. The cap at 28 days still applies, but it rarely bites below a five-day week.

Irregular hours workers and part-year workers are where the calculation changes significantly. From 1 January 2024, the government introduced a new accrual method for these groups.

Holiday entitlement accrues at 12.07% of hours worked in each pay period. That percentage comes from dividing 5.6 weeks by the 46.4 working weeks in a year (52 minus 5.6).

This matters because the definition of “irregular hours worker” is specific. A worker qualifies if the number of paid hours they work in each pay period is wholly or mostly variable under their contract terms.

Term-time workers, seasonal staff, and zero-hours contract workers typically fall into this category.

If your employee works fixed hours every week, even if those hours are part-time, they are not an irregular hours worker. The standard days-times-5.6 calculation applies to them.

The operational risk is misclassification. We reviewed how payroll teams categorise workers for holiday purposes, and the most common error is treating all part-timers as irregular.

A teaching assistant who works fixed hours during term time is a part-year worker. A retail worker who picks up different shifts each week is an irregular hours worker.

Both use the 12.07% method, but for different reasons, and getting the classification wrong means your audit trail will not hold up.

How does holiday pay work and what counts as normal remuneration?

Holiday pay for the first 4 weeks of statutory entitlement (Regulation 13 leave) must reflect “normal remuneration.” That phrase sounds simple.

In practice, it means basic pay plus any element of pay that your employee normally receives as part of their earnings.

Regular overtime must be included, whether it is compulsory, non-guaranteed, or genuinely voluntary but worked consistently.

If an employee regularly works overtime shifts, stripping that element out of their holiday pay means you are underpaying them.

Commission that forms a regular part of earnings must also be included. So must shift premiums, attendance allowances, and any other payments intrinsically linked to the work performed.

The calculation uses a 52-week reference period. You look back at the last 52 weeks in which the worker was paid, ignore any weeks where no pay was received, and average the earnings across those weeks.

If the worker has been employed for fewer than 52 weeks, you use however many complete weeks are available.

For the remaining 1.6 weeks of UK additional leave (Regulation 13A), the rules are slightly different. Employers can pay this portion at basic pay only, without including overtime or commission.

Most employers pay all 5.6 weeks at the same rate to avoid the administrative burden of splitting calculations, but the legal requirement only mandates normal remuneration for the first 4 weeks.

For irregular hours and part-year workers, there is now an additional option.

Employers can use rolled-up holiday pay, where a 12.07% uplift is added to each pay packet instead of paying holiday separately when the worker takes time off.

Do bank holidays count toward statutory holiday entitlement?

In our assessment of contract wording across common employment templates, we find most disputes arise from contracts that do not explicitly state whether bank holidays are in addition to or part of the 5.6-week minimum.

There is no legal right to take bank holidays off. This is the single most misunderstood point in UK holiday entitlement, and it catches employers and employees alike.

Your statutory 5.6 weeks can include bank holidays.

An employer is perfectly entitled to say “your 28 days include the 8 bank holidays in England and Wales, leaving you with 20 days to allocate as you choose.” That is legal and common.

Alternatively, an employer can offer bank holidays on top of the statutory minimum, giving 28 days plus 8 bank holidays for a total of 36 days. The contract determines which approach applies.

The trap for payroll sits in the 2026-27 leave year for businesses running April-to-March cycles. That year contains 10 bank holidays rather than the usual 8, because of where Easter falls in both 2026 and 2027.

If your contracts include bank holidays within the 28-day entitlement, your employees have fewer discretionary days that year.

If bank holidays sit outside the 28 days, your cost increases by 2 additional paid days per employee.

Part-time workers must receive pro-rata bank holiday entitlement. A three-day worker does not get 8 bank holidays. They get 4.8 (8 multiplied by 3/5).

The practicality is awkward because bank holidays fall on specific dates, often Mondays. A worker whose regular days are Tuesday to Thursday never works a Monday but still needs the pro-rata entitlement added to their leave balance.

Your payroll software should handle this automatically, but the setup requires the bank holiday allocation to be converted to hours, not left as whole days.

What are the carry-over rules for unused holiday?

We find the pandemic-era carry-over provisions continue to create reconciliation problems for businesses that did not formally track and cap outstanding leave during 2020-2022.

The default position is use-it-or-lose-it. Statutory holiday is meant to be taken in the leave year it accrues.

But the carry-over rules are more nuanced than that default suggests, and the nuance depends on which portion of the 5.6 weeks you are dealing with.

The first 4 weeks (Regulation 13 leave) cannot be carried forward under normal circumstances. The law treats this leave as a health and safety protection.

It must be taken. You cannot pay it in lieu unless the worker is leaving employment.

If the employer genuinely prevented the worker from taking it, the entitlement carries over, but the employer has to have been at fault.

The additional 1.6 weeks (Regulation 13A leave) can be carried over into the next leave year if there is a relevant agreement in writing between employer and worker. Many contracts include a carry-over clause allowing 5 or 8 days to roll forward.

Without that written agreement, the 1.6 weeks is also use-it-or-lose-it.

The exceptions matter more than the defaults for most payroll teams. Holiday accrued during sick leave can carry over. For the Regulation 13 portion, workers can carry over up to 20 days if they were unable to take leave due to sickness.

This carry-over right extends for 18 months from the end of the leave year in which it accrued.

Holiday accrued during maternity, paternity, adoption, or shared parental leave can also carry over into the following year without a cap.

That uncapped carry-over is the one that catches teams off guard when an employee returns from 52 weeks of maternity leave with a full year of untaken entitlement.

The practical difficulty is tracking which days fall under which regulation. If your system records “28 days statutory” as a single pot, you cannot accurately apply carry-over rules because the first 20 and the last 8 have different legal treatment.

This is one of the configuration details that most off-the-shelf payroll systems handle poorly unless specifically set up.

How does holiday accrue during maternity, sick leave, and other absences?

In our review of how payroll teams handle long-term absence, we find holiday accrual during sick leave is the entitlement most often overlooked until an employee returns and presents a large leave balance.

Holiday entitlement continues to accrue during any period of statutory leave. That includes maternity leave (all 52 weeks, the paid portion), paternity leave, adoption leave, shared parental leave, parental bereavement leave, and sickness absence.

The accrual runs at the normal rate throughout.

For a worker on 52 weeks of maternity leave, the full 5.6 weeks of holiday accrues during that absence. If their leave year runs January to December and they are on maternity leave for the entire year, they return with 28 days of untaken holiday that must be accommodated.

In practice, most employers arrange for the worker to take accrued holiday immediately before or after maternity leave to reduce the balance.

Sickness absence follows the same accrual principle but with tighter carry-over limits. A worker who is off sick for an extended period accrues holiday normally.

If they cannot take it because of their illness, the Regulation 13 portion (4 weeks) can be carried forward for up to 18 months. Beyond that, it expires.

The Regulation 13A portion (1.6 weeks) follows whatever carry-over arrangements are in your contract or workplace agreement.

The scenario that creates the most payroll disruption is an employee who returns from long-term sick leave with a large accrued balance and requests to take it immediately.

You are legally obliged to let them take it.

Refusing, or pressuring them to forfeit it, creates tribunal risk.

The pragmatic step is to monitor accrual balances during long absences and plan for the return, rather than discovering the liability on the day someone comes back to work.

From April 2026, parental leave and paternity leave are day-one rights under the Employment Rights Act 2025. That means more workers qualify for these absences earlier in their employment, and holiday accrual during those periods starts from a broader base.

If your headcount includes younger workers or recent hires, factor in higher leave accrual exposure than previous years.

What are the most common holiday entitlement mistakes employers make?

Six errors account for most of the underpayments, grievances, and tribunal claims we see in holiday entitlement disputes.

1. Excluding overtime and commission from holiday pay. Paying holiday at basic rate only when the worker regularly earns overtime, commission, or shift allowances.

The 52-week reference period exists specifically to capture these variable elements.

If your payroll calculates holiday pay from base salary alone, every worker with regular additional earnings is being underpaid.

2. Using the wrong accrual method for irregular workers. Applying the standard days-times-5.6 calculation to workers who should be on the 12.07% accrual method, or vice versa.

The definition of an irregular hours worker is specific: the paid hours in each pay period must be wholly or mostly variable under the contract.

Frequently asked questions