National Minimum Wage and National Living Wage: An Employer's Compliance Guide

Underpaying the National Minimum Wage or National Living Wage is one of the easiest compliance breaches for an employer to commit entirely by accident, and one of the most expensive once HMRC identifies it. Unlike many employment law obligations, minimum wage compliance is enforced with financial penalties that can significantly exceed the value of the underpayment itself.

Current rates

From April 2026, the National Living Wage — the rate that applies to workers aged 21 and over — is £12.71 an hour, up from £12.21. Workers aged 18 to 20 are entitled to at least £10.85 an hour, and the rate for 16 and 17-year-olds and apprentices is £8.00 an hour. These rates are reviewed annually by the Low Pay Commission and typically take effect each April, so employers need a process for updating pay in line with the new rates rather than relying on memory or an outdated payroll template.

Who the rules apply to

Minimum wage law covers workers as well as employees, which catches many employers out — casual staff, agency workers and some categories of self-employed people who are genuinely controlled and directed like an employee can still be entitled to the minimum wage even without a traditional employment contract. Apprentices are entitled to at least the apprentice rate for the first year of their apprenticeship, or if they're over 19, for as long as they remain in the first year, after which they move to the rate for their age.

How pay is calculated for minimum wage purposes

The calculation isn't simply hourly pay divided by hours worked. Certain deductions — for uniforms, equipment the employer requires, or accommodation charges above a set offset rate — can reduce a worker's pay below the minimum wage threshold for enforcement purposes, even if their gross pay looks compliant on paper. This connects closely to the record-keeping issues covered in our guide to holiday pay and leave record-keeping. Unpaid working time is another frequent trap: time spent on mandatory training, travelling between appointments during the working day, or waiting for security checks before or after a shift often counts as working time for minimum wage purposes, even where it isn't paid.

Common compliance failures

HMRC's enforcement reports consistently identify the same handful of causes: making unlawful deductions from pay (for example, docking pay for till shortages or damaged stock without contractual authority), failing to pay for travel time between assignments in sectors like domiciliary care, failing to pay for mandatory training time, and simply not uplifting pay when a worker moves into a higher age band on their birthday. Salaried workers paid an annual salary in equal instalments can also fall foul of the rules if their contracted hours mean their effective hourly rate dips below the minimum during particularly busy pay reference periods.

Enforcement and penalties

HMRC can investigate on its own initiative or in response to a worker complaint, and can order employers to repay arrears at current minimum wage rates (not the lower historic rate that applied when the underpayment occurred) alongside a penalty of up to 200% of the arrears, subject to a minimum and maximum penalty per worker. Employers found to have deliberately underpaid can also be publicly named by the government as part of its minimum wage enforcement scheme.

Building a compliant pay process

A defensible approach includes reviewing pay rates every April against the new bands, auditing deductions and unpaid working time annually, and paying particular attention to salaried workers whose contracted hours vary seasonally. Keeping clear records of hours worked, not just hours rostered, gives an employer the evidence needed to demonstrate compliance if HMRC ever asks.

Minimum wage and zero-hours or casual staff

Employers relying heavily on zero-hours or casual arrangements face particular exposure, because hours can be irregular and informally recorded, making it easy to lose track of exactly what someone was paid for a given shift. Building minimum wage checks into payroll software, rather than relying on managers to manually verify rates, reduces the risk of an inadvertent breach slipping through unnoticed across a large casual workforce.

Frequently asked questions

What's the difference between the National Living Wage and National Minimum Wage? The National Living Wage is simply the name for the top minimum wage band, currently applying to workers aged 21 and over; the National Minimum Wage is the umbrella term covering all the age-banded rates.

Do minimum wage rules apply to self-employed contractors? Generally no, but genuine self-employment status matters — someone labelled self-employed but actually controlled and directed like a worker can still be entitled to the minimum wage.

Does travel time count towards minimum wage calculations? Travel between assignments during the working day, such as a domiciliary care worker travelling between clients, generally counts as working time; an ordinary commute to a single fixed workplace does not.

How often do minimum wage rates change? Rates are typically reviewed annually and take effect each April, based on recommendations from the Low Pay Commission.