National Minimum Wage: Why Paying Above the Hourly Rate Isn’t Always Enough

Worth Knowing

An hourly rate above the minimum on the payslip doesn’t mean you’re paying minimum wage. HMRC looks at the pay that counts against the hours that count, and plenty of employers fall below it without realising. Here’s how it’s worked out, the current rates, and where employers most often get it wrong.

Current rates (from 1 April 2026)

Worker hourly rates:

  • Aged 21 and over (National Living Wage): £12.71
  • Aged 18 to 20: £10.85
  • Aged 16 to 17:£8.00
  • Apprentice rate: £8.00

The rates go up every April, so pay that was compliant last year may not be now. Full detail is on GOV.UK’s National Minimum Wage pages.

How minimum wage is actually worked out

National Minimum Wage is a calculation, not just a rate. For each pay period, you take the pay that counts for minimum wage purposes and divide it by the hours that count as working time. The answer has to be at least the minimum rate for that worker’s age.

Both sides of that sum can move. If someone works more hours than you’re paying them for, their effective hourly rate drops. If something is deducted from their pay, or they have to pay for something the job requires, the pay that counts drops.

In practical terms, this means an employee aged 21 or over on £13 an hour who spends an unpaid 15 minutes opening up before every 7.5-hour shift is effectively earning about £12.58 an hour, below the £12.71 minimum.

Where employers most often trip up

Unpaid time around a shift. Opening up, closing down, cashing up, handovers and getting changed into a required uniform can all count as working time, even if nobody thinks of them as part of the shift.

Travel during the working day. Time spent travelling between jobs or sites counts. The normal commute from home to a regular workplace doesn’t.

Working through unpaid breaks. If staff regularly work through a break they aren’t paid for, that time counts.

Deductions for uniforms, tools or equipment. Deductions, or payments staff make, for things they need to do the job can reduce their pay for minimum wage purposes.

Salary sacrifice. Sacrificing pay for benefits such as pensions, cycle schemes or childcare can take someone below the minimum, even when their contractual pay is above it.

Salaried staff working extra hours. If a salaried employee regularly works beyond their contracted hours, their salary may no longer cover every hour at the minimum rate (the keen ones are often the ones most at risk).

Birthdays. Turning 18 or 21 moves someone into a higher band from the start of their next pay period, and it’s easy to miss.

Apprentices on the wrong rate. This one comes up often enough to need its own section.

So it isn’t enough to check the rate on the payslip. What matters is what people actually do, when they do it, and what comes out of their pay along the way.

Apprentices: the rate doesn’t always last the whole apprenticeship

The apprentice rate only applies to apprentices who are under 19, or who are 19 or over and in the first year of their apprenticeship. Once an apprentice is 19 or over and has completed that first year, they’re entitled to the full minimum wage rate for their age.

In practical terms, this means a 20-year-old starting a two-year apprenticeship can be paid £8.00 an hour in year one, but must move to at least £10.85 an hour from the start of year two.

Training time counts too. Time spent at college or completing required apprenticeship training forms part of the hours that need to be paid at the correct rate, not just time spent in the workplace.

What happens if HMRC finds an underpayment

It’s the employer’s responsibility to make sure the rules are being met, and HMRC can look back over several years of pay when it checks. If it finds an underpayment, the employer can be required to:

  • pay arrears to every worker affected, calculated at today’s rates where those are higher;
  • pay a penalty of up to 200% of the arrears, capped at £20,000 per worker; and
  • face being publicly named by the government, which can do far more damage than the bill itself.

The penalty is halved if the arrears and penalty are paid within 14 days, so acting quickly makes a real difference.

Running payroll through an accountant doesn’t transfer that responsibility. Payroll is processed at the rate you provide, and your payroll provider won’t necessarily know how many hours someone actually works, what happens outside their contracted hours or what arrangements you have with them.

Frequently asked questions about National Minimum Wage

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Here’s how we help

If you’d like a second pair of eyes on your payroll, we can look at how your staff are actually paid against the hours they actually work, and flag anything that could put you below the line before HMRC does. We’re also considering a dedicated payroll, pension and National Minimum Wage compliance audit, so if that’s something you’d find useful, do tell us.

If you’re already working with another accountant, moving over is more straightforward than most people expect, and our guide on how to change accountants walks you through it.

Need our help?

To talk it through, drop us a message, get in touch or call the office on 01904 202237.

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The information in this article was correct on 10 October 2026. It should not be used instead of professional advice. 

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