National Living Wage vs National Minimum Wage

Ask most people in the UK what the minimum wage is and they will give you a single number. Ask a payroll professional and they will give you several – because the UK’s minimum wage system is not a single rate. It is a tiered structure with different rates for different age groups, a separate rate for apprentices, and a naming convention that has evolved in ways that create genuine confusion even among experienced HR and payroll teams.

The National Living Wage (NLW) and the National Minimum Wage (NMW) are not two separate schemes. They are two names within a single legal framework – the National Minimum Wage Act 1998 and its regulations – with the NLW label applied to the highest rate applicable to workers aged 21 and over, and the NMW label covering the lower rates for younger workers and apprentices.

The distinction matters because the rates differ materially, because the age thresholds have changed over time and continue to evolve, and because non-compliance with minimum wage law carries consequences that go well beyond a payroll correction – including HMRC enforcement, financial penalties, mandatory arrears payment, and public naming on the government’s minimum wage non-compliance register.

This guide covers the full NLW and NMW framework – current rates, worker coverage, the age band structure, the types of work that complicate compliance, enforcement mechanisms, and the payroll errors that most frequently result in underpayment.

Mercans provides fully managed UK payroll services, including minimum wage monitoring, rate updates, and compliance management for employers across all sectors and sizes.

The Legal Framework – One Act, Multiple Rates

The UK’s minimum wage obligation derives from the National Minimum Wage Act 1998 and the National Minimum Wage Regulations 2015 (as amended). These establish the legal entitlement to minimum pay, define the workers who are covered, specify what counts as pay for minimum wage purposes, and set out the enforcement regime.

The rates themselves are not set in the legislation – they are set annually by the government following recommendations from the Low Pay Commission (LPC), an independent statutory body that researches the impact of minimum wage rates on employment, businesses, and the wider economy. The LPC publishes its recommendations each autumn, and the government implements new rates from 1 April each year.

The nomenclature has evolved over time:

• Pre-2016: A single National Minimum Wage applied to all covered workers, with age-banded rates below the adult rate
• April 2016: The government introduced the National Living Wage as a new, higher rate for workers aged 25 and over – presenting it as an aspirational rate rather than merely a minimum wage
• April 2021: The NLW age threshold was lowered from 25 to 23 and over
• April 2024: The NLW age threshold was lowered further to 21 and over – its current position

The progressive lowering of the NLW age threshold is a deliberate policy direction – the government has stated an intention to extend the NLW to all adults over 18 over time. Employers should anticipate further threshold changes in coming years and build flexibility into their payroll age monitoring processes accordingly.

Current Rates – April 2024 to March 2025

The National Living Wage – £11.44 per hour

The NLW of £11.44 per hour applies to all workers aged 21 and over – including those who have just turned 21 during the pay reference period. The rate represents a significant increase from prior years, reflecting the government’s target of reaching two-thirds of median earnings as the NLW benchmark and continuing its upward trajectory toward that goal.

For salaried employees on annual contracts, the NLW minimum annual equivalent for a standard 37.5-hour working week is approximately £22,308 per year. Employers with salaried staff on older contracts that have not been reviewed in line with annual NLW increases are a persistent source of inadvertent non-compliance.

The 18 to 20 Rate – £8.60 per hour

Workers aged 18 to 20 are entitled to £8.60 per hour. This rate applies from the worker’s 18th birthday until the day before they turn 21 – at which point the NLW rate applies.

The transition from the 18-to-20 rate to the NLW upon turning 21 represents a £2.84 per hour increase – a meaningful jump that must be implemented in the payroll system on or before the worker’s first pay period following their 21st birthday. Failing to make this update is one of the most common NMW compliance failures identified during HMRC enforcement visits.

The 16 to 17 Rate – £6.40 per hour

Workers aged 16 and 17 – those above compulsory school leaving age but not yet 18 – are entitled to £6.40 per hour. This rate applies to employees, workers, and apprentices who are aged 16 or 17.

The Apprentice Rate – £6.40 per hour

The apprentice rate of £6.40 per hour applies to apprentices who are either:

• Aged under 19, or
• Aged 19 or over but in the first year of their apprenticeship

An apprentice who is 19 or over and has completed the first year of their apprenticeship is entitled to the NMW or NLW rate appropriate to their age – not the apprentice rate. Many employers incorrectly continue to apply the apprentice rate throughout the apprenticeship regardless of age and year – a systematic error that affects every pay period from the point the apprentice should have moved to a higher rate.

Who Is Covered – The Worker Definition

Minimum wage entitlement applies to workers – a legal category broader than employees. Workers include:

• Employees under contracts of employment
• Agency workers
• Casual workers
• Zero-hours contract workers for the hours they actually work
• Homeworkers paid by output
• Agricultural workers
• Seafarers and offshore workers in certain circumstances
• Apprentices

The following are not entitled to the minimum wage:

• Genuinely self-employed individuals – but the distinction between worker and self-employed is determined by the substance of the working relationship, not the label applied
• Company directors who do not have a worker relationship with the company
• Volunteers who receive no pay or only reasonable expenses
• Members of the employer’s family who live in the employer’s home and participate in the running of a family business
• Students on work experience placements that are part of a UK-based higher or further education course, for the duration of that placement
• Workers outside the UK

The self-employed exclusion is a frequent source of compliance risk – businesses that engage individuals as self-employed to avoid minimum wage obligations face reclassification risk under HMRC’s IR35-adjacent worker status analysis and employment tribunal claims. The minimum wage applies based on working reality, not contractual labels.

What Counts as Pay for Minimum Wage Purposes

This is where minimum wage compliance becomes technically demanding – and where many inadvertent underpayments originate. The question is not simply whether the worker earns enough in total, but whether the specific payments that count toward the minimum wage calculation are sufficient when averaged over the pay reference period and compared against the applicable rate.

Payments That Count

The following payments count toward minimum wage:

• Basic salary and wages
• Incentive payments and bonuses paid based on performance
• Tips and gratuities paid through the employer’s payroll (from April 2024, tips paid through tronc that the employer controls also count – but see below)
• Piece-rate payments
• Salary sacrifice amounts received as wages before any sacrifice deduction

Payments That Do Not Count

The following do not count toward minimum wage:

• Tips and gratuities paid directly by customers to workers or through an independent tronc not controlled by the employer – these are categorically excluded regardless of amount
• Overtime and shift premium elements above the basic rate – only the basic element counts, not the enhancement
• Allowances – such as London weighting, unsocial hours allowances, or geographical supplements – where they are paid for a specific aspect of the work rather than as straightforward wages. Note that this area is nuanced and not all allowances are excluded
• Benefits in kind – employer-provided accommodation above the accommodation offset, meals, transport, and other non-cash benefits (except accommodation – see below)
• Employer pension contributions
• Loan repayments deducted from wages – such as season ticket loans
• Deductions for uniforms, tools, or equipment required by the employer – these reduce qualifying pay and must be considered carefully

The Accommodation Offset

Employer-provided accommodation is the only benefit in kind that partially counts toward minimum wage compliance. The accommodation offset allows employers to count a defined daily amount for each day accommodation is provided. For 2024/25, the offset is £9.99 per day. Where the employer charges for accommodation, only the offset amount reduces qualifying pay – charges above the offset reduce qualifying pay further.

The accommodation offset is a highly specific rule that affects employers in sectors where accommodation is routinely provided – hospitality, agriculture, domestic work – and requires precise calculation to avoid inadvertent underpayment.

The Four Types of Work – Different Calculation Methods

NMW compliance is not assessed as a simple annual average. The method for calculating whether the minimum wage has been paid depends on which of the four work types applies to the worker:

1. Time Work

Workers paid by the hour or whose pay is directly linked to the time worked. The minimum wage calculation is straightforward – total pay for the pay reference period divided by hours worked must equal at least the applicable rate.

2. Salaried Hours Work

Workers employed to work a defined number of basic hours per year under a contract, paid in equal instalments regardless of actual hours worked in each period. The annual salary divided by the annual contracted hours must produce at least the applicable hourly rate. A common compliance failure here is where contracted hours increase through a contract change but the salary does not increase proportionally – dropping the effective hourly rate below the minimum.

3. Output Work

Workers paid by reference to the number of pieces produced or tasks completed – piecework. Compliance is assessed against a fair piece rate – HMRC’s formula requires that the piece rate enables a worker of average ability to earn at least the minimum wage in the time it takes to complete the work. Employers of output workers must conduct and document a regular rated output work test to demonstrate compliance.

4. Unmeasured Work

Work that does not fit neatly into the above categories – where neither the hours nor the output are specifically contracted. Compliance can be assessed either by tracking actual hours or by using a daily average agreement – a written agreement between employer and worker specifying the average daily hours for minimum wage purposes.

The work type must be correctly identified before minimum wage compliance can be properly assessed – applying the wrong calculation methodology produces incorrect results even where wages appear adequate on the surface.

Pay Reference Periods

The pay reference period is the period over which minimum wage compliance is assessed – typically the interval between each payment of wages. For a worker paid monthly, the pay reference period is one month. For a worker paid weekly, it is one week.

Compliance is tested within each pay reference period independently – a worker cannot be underpaid in one month and have the shortfall offset by an overpayment in another month. This is particularly important for workers with variable hours or variable pay – a period of reduced hours or reduced output pay that results in an effective hourly rate below the minimum must be corrected within the same pay reference period, not carried forward.

Common Causes of NMW Non-Compliance

HMRC’s minimum wage enforcement activity consistently surfaces the same categories of underpayment year after year. The most frequent causes include:

Failing to update rates on 1 April: The NLW and NMW rates increase annually. An employer who does not update their payroll system on 1 April systematically underpays every covered worker from that date until the rates are corrected – potentially for weeks or months. Automatic rate updates in payroll software do not guarantee compliance if the software is not properly configured or if custom pay rates have been set that override the standard minimums.

Not adjusting rates when workers change age bands: A worker turning 18, 21, or any other age threshold during a pay reference period must receive at least the higher rate from the date of their birthday. Payroll systems that update rates only at the start of a new period – rather than mid-period at the birthday – create underpayment for the days between the birthday and the next pay period. Most payroll systems can be configured to apply rate changes from a specific date within a pay period.

Apprentice rate applied beyond the eligible period: As noted above, apprentices aged 19 or over who have completed the first year of their apprenticeship must receive the age-appropriate NMW or NLW rate. Applying the apprentice rate throughout a multi-year apprenticeship is a systematic underpayment.

Salary sacrifice reducing pay below the minimum: Where an employee’s gross pay after a salary sacrifice arrangement falls below the NLW or NMW, the arrangement is non-compliant regardless of the tax advantages the sacrifice provides. The minimum wage floor applies to qualifying pay after deductions, and salary sacrifice is a deduction. Employers offering salary sacrifice for pension, childcare vouchers, or cycle-to-work must monitor that the sacrifice does not reduce qualifying pay below the minimum for any worker.

Deductions for uniforms, tools, or equipment: Where an employer requires a worker to purchase a uniform, equipment, or tools as a condition of employment and deducts the cost from wages, the deduction reduces qualifying pay. If the deduction brings the effective hourly rate below the minimum, the employer is non-compliant even if the gross wage before deduction was above the minimum.

Tips incorrectly counted toward minimum wage: Following changes to tipping legislation – and the Allocation of Tips Act 2023 which took effect in October 2024 – the rules around tips and minimum wage compliance have become more prominent. Cash tips received directly by workers from customers and tips paid through independent tronc arrangements do not count toward the minimum wage. Employers in hospitality who rely on tip income to bring workers up to the minimum wage are non-compliant.

Unpaid working time: Time that constitutes working time for minimum wage purposes – but is not paid – reduces the effective hourly rate below the minimum. Common examples include mandatory pre-shift meetings, security queue waiting time, mandatory uniform changing time, and travel between work sites. Where these time elements are not compensated but represent genuine working time, the employer is potentially underpaying every affected worker.

Sleep-in workers: Workers who are required to sleep at or near their workplace and available to respond if needed – common in care settings – have been the subject of significant litigation over whether sleep-in time constitutes working time for minimum wage purposes. HMRC guidance distinguishes between periods of availability (which may count) and periods of genuine sleep (which may not count), but the legal position remains nuanced and sector-specific guidance should be sought.

HMRC Enforcement – How Non-Compliance Is Identified and Penalised

HMRC’s National Minimum Wage team is responsible for enforcement in Great Britain. It investigates complaints from workers, conducts proactive enforcement visits across sectors with high rates of non-compliance, and processes referrals from other agencies.

How Investigations Are Triggered

• Worker complaint to HMRC’s Pay and Work Rights helpline (0800 917 2368)
• HMRC-initiated proactive sector visits – hospitality, retail, care, and cleaning are frequent targets
• Referrals from Employment Tribunals following related claims
• Information sharing between HMRC and other government bodies
• Anonymous tip-offs from workers or third parties

Consequences of Non-Compliance

Arrears payment: The employer must pay all underpaid workers the full amount of arrears calculated at the current rate – not the rate at the time of underpayment. Where rates have increased since the underpayment occurred, the arrears are calculated at the higher current rate, increasing the total liability for historic underpayments.

Financial penalty: A penalty of 200% of total arrears owed to all underpaid workers – subject to a minimum of £100 and a maximum of £20,000 per worker. The penalty is halved if paid within 14 days. For employers with large numbers of underpaid workers, the total penalty exposure can be substantial.

Public naming: HMRC publishes the names of employers found to have underpaid the minimum wage on a public register – the NMW naming scheme. Named employers include the amount of arrears owed, the number of workers affected, and the employer’s name and sector. The reputational damage of naming is significant and permanent – entries remain in the public record.

Criminal prosecution: In cases of deliberate and systematic minimum wage non-compliance – particularly where employers have falsified records or actively deceived workers – criminal prosecution with unlimited fines and potential imprisonment is available, though used selectively.

Employer Records Obligations

Employers must maintain NMW records for each pay reference period – sufficient to demonstrate compliance for every covered worker. Records must be retained for a minimum of six years. HMRC inspectors can require access to payroll records, time and attendance data, contracts, and payment receipts.

Employers who cannot produce adequate records when requested by HMRC face the presumption that they have not complied – the burden of proof lies with the employer, not HMRC.

The Real Living Wage – An Important Distinction

Employers and payroll teams sometimes encounter references to the Real Living Wage – a voluntary rate set annually by the Living Wage Foundation, a campaigning organisation independent of the government. The Real Living Wage rates for 2024/25 are higher than the statutory NLW:

• Real Living Wage (outside London): £12.00 per hour
• London Living Wage: £13.15 per hour

The Real Living Wage is not legally enforceable – it is a voluntary commitment made by employers who choose to accredit with the Living Wage Foundation. Accredited employers commit to paying at least the Real Living Wage to all directly employed and regularly contracted workers.

The key distinction for payroll compliance is that failure to pay the Real Living Wage has no legal enforcement mechanism – it is a reputational and ethical commitment, not a statutory one. Failure to pay the NLW and NMW, by contrast, carries the full enforcement consequences described above.

Employers who have made Living Wage Foundation accreditation commitments must track both the statutory rates and the Foundation’s voluntary rates – ensuring compliance with the statutory minimum as a legal floor and the Real Living Wage as an accreditation obligation.

Salaried Employees and Minimum Wage – A Persistent Risk Area

The minimum wage is most visibly associated with hourly-paid workers – but salaried employees on annual contracts are equally subject to minimum wage law. For salaried employees, non-compliance typically arises in one of three ways:

Annual salary not uplifted alongside NLW increases: An employee on a salary that was above the NLW minimum annual equivalent when agreed may fall below the equivalent minimum if the salary is not reviewed annually alongside the 1 April rate increase. This is particularly common for part-time salaried employees and lower-paid administrative roles.

Salaried employees working unrecorded additional hours: A salaried employee whose contracted hours are 37.5 per week but who regularly works 50 hours has an effective hourly rate significantly below the annual salary calculation implies. Where working time above contracted hours is regular and expected by the employer – even without formal overtime arrangements – those hours may constitute working time for minimum wage purposes, reducing the effective hourly rate.

New starters on salaries set at prior NLW levels: A salary agreed in January may have been above the NLW at that time, but if the employee is still employed in April when the new NLW rates take effect and their salary has not been reviewed, they may be underpaid from 1 April onward.

How Mercans Supports NLW and NMW Compliance in UK Payroll

Minimum wage compliance is an ongoing operational discipline – not a one-time configuration exercise. It requires annual rate updates on 1 April, age-triggered rate changes throughout the year, monitoring of salary sacrifice impacts, and systematic review of any deductions that reduce qualifying pay.

Mercans’ UK payroll services manage NLW and NMW compliance as a continuous process:

• Annual rate updates applied from 1 April each year – NLW, all NMW age bands, and apprentice rate updated simultaneously
• Age monitoring for all workers – rate changes triggered on the worker’s birthday when they cross an age threshold
• Apprentice rate eligibility tracking – transition to age-appropriate NMW or NLW at the correct point in the apprenticeship
• Salary sacrifice impact monitoring – qualifying pay checked against the applicable minimum after any sacrifice deduction
• Payroll deduction review – uniform, equipment, and tool deductions assessed against minimum wage impact
• Salaried employee annual equivalence review – identifying salaries that fall below minimum wage equivalence following 1 April rate increases
• Working time pattern monitoring – flagging where additional uncompensated hours may affect minimum wage compliance
• Real Living Wage rate tracking for accredited employers – ensuring voluntary commitments are met alongside statutory obligations
• Record maintenance to HMRC’s six-year requirement – audit-ready documentation for all pay reference periods

For multinational employers managing a UK workforce alongside payroll operations in other markets, Mercans’ global payroll platform ensures UK minimum wage compliance is embedded within a professionally managed payroll process that keeps pace with annual legislative changes. Learn more at mercans.com.

Frequently Asked Questions

If a worker is paid above the NLW on average over the year, can the employer offset higher-pay periods against lower-pay periods to demonstrate compliance?

No – minimum wage compliance is assessed within each individual pay reference period, not on an annual average basis. A worker who is underpaid in March cannot have that shortfall offset by overpayment in January. Each pay period must independently meet the minimum wage requirement when qualifying pay is compared against hours worked in that period. This is particularly important for workers with variable hours or seasonal pay – a quiet month with reduced hours and reduced pay that drops below the minimum wage floor creates an underpayment in that period regardless of the annual picture. Employers of variable-hours workers should build minimum wage compliance checks into each payroll run rather than relying on annual compensation reviews.

Does the NLW apply to workers on zero-hours contracts?

Yes – zero-hours contract workers are entitled to the NLW or NMW for every hour they work, assessed within each pay reference period. The zero-hours nature of the contract does not reduce the minimum wage entitlement – it simply means the entitlement applies to the hours actually worked rather than to a fixed contracted amount. An employer who pays a zero-hours worker less than the applicable minimum for any hour worked – even in a period of very limited hours – is non-compliant for that period. Zero-hours workers also have the right to receive a written statement of their minimum wage entitlement, and employers must maintain records of hours worked for each pay reference period to demonstrate compliance.

A worker turns 21 on 15 June. When must the employer start paying the NLW rate?

The NLW rate must be applied from the worker’s 21st birthday – 15 June. The worker is entitled to the NLW for all hours worked from that date. In a monthly payroll context, this means the June pay should include the NMW rate for hours worked up to 14 June and the NLW rate for hours worked from 15 June onward. Most payroll systems can be configured to apply a rate change mid-period from a specific date – employers should verify their system handles age-triggered rate changes this way rather than applying the new rate only from the start of the next full pay period, which would underpay the worker for the days between the birthday and the next period start.

Can an employer count employer pension contributions toward minimum wage compliance?

No – employer pension contributions do not count toward the minimum wage. The minimum wage is assessed against the worker’s qualifying pay – amounts paid to the worker as wages – and employer pension contributions are payments made to a pension fund on the worker’s behalf, not wages received by the worker. Similarly, employee pension contributions deducted through salary sacrifice reduce the worker’s qualifying pay – a salary sacrifice pension arrangement that reduces gross qualifying pay below the minimum wage creates a compliance failure regardless of the total reward package value. Employers offering generous pension contributions should verify that the salary sacrifice element of any pension scheme does not inadvertently cause NLW or NMW underpayment for lower-paid workers.

The government publishes a list of named employers who have underpaid the minimum wage. What does being named actually mean for a business, and is there any way to avoid it?

Being named on the government’s minimum wage non-compliance register means the employer’s name, the amount of arrears owed, the number of workers affected, and the business sector are published on a publicly accessible government page and typically reported by national and trade press. The naming is permanent – entries are not removed once published. The reputational consequences are significant – for consumer-facing businesses, the publicity damage can affect customer relationships; for employers competing for talent, being named as a minimum wage non-complier creates a serious recruitment disadvantage. Naming is triggered by HMRC completing an enforcement notice requiring arrears payment – the naming follows automatically once the enforcement process concludes. The only effective way to avoid naming is to pay the minimum wage correctly in the first place, or – if a historic underpayment is discovered internally – to self-correct and proactively notify HMRC before an enforcement investigation begins. Voluntary disclosure of inadvertent underpayment, full payment of arrears, and cooperation with HMRC can in some circumstances result in reduced penalties, though the naming outcome for confirmed underpayments is generally unavoidable once enforcement proceedings conclude. Mercans’ UK payroll compliance team supports employers in conducting proactive NMW compliance audits to identify and correct any underpayments before they become enforcement matters.