Quick answer: Your true hourly rate is identical whether you work full-time or part-time, provided both roles pay the same salary band. A £36,000 full-time job at 37.5 hours a week works out at £18.46 an hour — and the 22.5-hour part-time version of that same job pays £21,600, which is still £18.46 an hour. The smaller number on a part-time payslip isn’t a worse rate. It’s the full salary scaled down, hour for hour.
Two payslips compared side by side to calculate true hourly pay
The full time vs part time hourly pay uk question, answered plainly
Search “full time vs part time hourly pay uk” and you’ll find forums full of people convinced that going part-time means accepting a worse deal per hour. The salary looks dramatically smaller, friends raise their eyebrows, and it genuinely feels like a penalty. But the arithmetic tells a different story. In this article we’ll work through the actual maths — with real 2026/27 figures, step by step — show where the myth comes from, and flag the few situations where part-time workers genuinely do come off worse. Not because of the hourly rate itself, but because of what sits around it.
Full Time vs Part Time Hourly Pay UK: The Core Idea
That’s it. Your employer doesn’t pick a different number for part-timers. They take the full-time equivalent salary, divide it by the hours in the full-time week, and then pay you for the hours you actually work.
Take a typical office role advertised at £36,000 for a 37.5-hour week:
Hours per year: 37.5 × 52 = 1,950
Hourly rate: £36,000 ÷ 1,950 = £18.46
Now suppose you negotiate that same role at three days a week — 22.5 hours, or 0.6 FTE (full-time equivalent). The salary scales proportionally:
0.6 × £36,000 = £21,600
Hours per year: 22.5 × 52 = 1,170
Hourly rate: £21,600 ÷ 1,170 = £18.46
Same rate. Nothing hidden, nothing shaved off. The £14,400 “gap” between the two salaries is exactly the pay for the 780 hours you’re not working — 780 × £18.46 = £14,399 (the £1 is rounding). This is the entire principle of pro-rata pay: everything scales with hours, including the hourly rate, which stays constant.
Worked Example: One Job, Five Different Working Patterns
To make this concrete, here’s the same £36,000, 37.5-hour role stretched across five different patterns. In each case we compute the hours, the salary, and the true hourly rate:
Working pattern
Weekly hours
FTE
Annual salary
Hourly rate
Full-time
37.5
1.0
£36,000
£18.46
4 days
30.0
0.8
£28,800
£18.46
3 days
22.5
0.6
£21,600
£18.46
2.5 days
18.75
0.5
£18,000
£18.46
2 days
15.0
0.4
£14,400
£18.46
The hourly rate column is deliberately boring. That’s the point. Whether you work two days or five, each hour of your time is worth £18.46 to this employer.
Let’s do a second example at a higher salary, because the principle holds all the way up the scale. A £52,000 role on a 40-hour week:
Nice round numbers this time, but the lesson is identical: the rate is a property of the job, not of your working pattern.
Does Tax Punish Part-Time Workers? The 2026/27 Numbers
A common worry runs deeper than gross pay: “Sure, the gross hourly rate is the same — but won’t I end up worse off after tax?” Let’s run the actual 2026/27 figures and find out. For England, Wales and Northern Ireland the income tax setup is:
Personal allowance: £12,570 (0%)
Basic rate: 20% on £12,571–£50,270
Higher rate: 40% on £50,271–£125,140
Additional rate: 45% above £125,140
Take our £52,000 full-time role (37.5 hours a week, 1,950 hours a year) versus its exact half — £26,000 at 0.5 FTE (975 hours a year). Gross hourly rate for both: £52,000 ÷ 1,950 = £26.67.
Read that twice. After tax, the part-timer keeps more per hour — £23.91 against £22.44. That’s not generosity; it’s just how progressive taxation works. The full-timer’s extra earnings get taxed at higher marginal rates, which drags their average down. Tax doesn’t punish part-time work. If anything, the maths slightly favours it.
The same logic applies to National Insurance and student loan repayments: thresholds are annual, so lower annual earnings mean a smaller slice lost to deductions. The gross hourly rate is identical; the net hourly rate can actually tilt in the part-timer’s favour.
Where Part-Time Workers Really Can Lose Out
So the headline myth is busted. But it would be dishonest to stop there, because the sense that part-time work carries a penalty doesn’t come from nowhere. The hourly rate is equal — the package around it sometimes isn’t. Here’s where to look:
Overtime thresholds. Many contracts only pay overtime premiums once you’ve passed full-time hours. A full-timer who works 42 hours in a 37.5-hour contract gets time-and-a-half for 4.5 hours. A part-timer contracted for 22.5 hours who picks up an extra shift often gets paid at their standard rate up to the full-time threshold — no premium. Same hourly rate, but less access to the enhanced one.
Bonuses and pay rises. These are usually pro-rata (fair), but discretionary bonuses are sometimes awarded as flat amounts or tied to visibility. If you want to double-check your own numbers, run the numbers on a pro rata calculator and compare against your payslip line by line.
Career progression. This is the big one, and it’s cultural rather than contractual. Part-time roles are disproportionately concentrated in lower-paid occupations, and part-timers get promoted less often. Over a decade, the cumulative earnings gap is real — but it comes from the career ladder, not from the hourly rate on day one.
Pension contributions. If you and your employer each contribute a percentage of salary, the part-timer’s pot grows more slowly in absolute terms. The percentage is the same; the pounds are smaller because the salary is smaller. Over 30 years, compounding turns that into a meaningful difference.
Holiday and sick pay. These are genuinely pro-rata and fair: 25 days of full-time holiday becomes 15 days at 0.6 FTE — which is exactly the same number of weeks off. Bank holidays can be fiddly for part-timers whose days off clash with them, though, so check your employer’s policy.
A subtle one: hourly rate versus hourly value. Even where the rate is equal, part-timers often report doing the same total workload squeezed into fewer days — a full-time job’s responsibilities on part-time hours. That’s not a pay-rate problem, it’s a job-design problem, and it’s worth raising at the point of negotiation rather than discovering six months in. Ask explicitly: is this role’s workload genuinely scaled to the hours, or is it a full-time role being done part-time? The answer affects your working life far more than any figure on the offer letter.
None of these change the core finding. Your hour is worth the same. But they explain why “the hourly rate is identical” and “part-time workers are worse off overall” can both be true at once.
Comparing Two Job Offers: A Practical Checklist
Suppose you’re choosing between a full-time offer and a part-time one — or negotiating reduced hours in your current role. The annual salary figures will look wildly different, and that’s precisely why you need to strip them back to an hourly comparison before you decide anything. Here’s how to compare them like an accountant:
Get both salaries onto the same footing. Convert everything to an hourly rate using the formula at the top of this article. A £30,000 salary on a 35-hour week (£16.48/hour) beats a £32,000 salary on a 42.5-hour week (£14.47/hour) — the bigger number isn’t always the better deal.
Check the contractual hours carefully. Some employers quote a 37.5-hour week but expect 40; others include unpaid lunch breaks in the figure. The hourly rate is only as honest as the hours going into it.
Ask about the overtime threshold. At what point do premium rates kick in — your contracted hours, or full-time hours? Get it in writing.
Compare the whole package, not just salary. Pension contribution rates, bonus eligibility, private healthcare, training budgets — these don’t always scale neatly, and they’re negotiable.
Run the tax numbers. As we showed above, the net picture can surprise you. Lower annual earnings can mean a higher effective hourly rate after deductions.
Think in years, not months. If career progression matters to you, ask directly: how many part-timers have been promoted in this team in the last two years? The answer tells you more than any salary figure.
Frequently Asked Questions
Is the hourly rate really the same for part-time and full-time workers?
Yes — when both are on the same pay scale. Pro-rata pay scales the salary with the hours, so dividing salary by hours gives the identical rate. If a part-timer’s hourly rate is genuinely lower for the same work, that may breach the Part-time Workers (Prevention of Less Favourable Treatment) Regulations 2000.
Do part-time workers pay a higher percentage of their income in tax?
No — it’s the opposite. The personal allowance (£12,570 in 2026/27) covers a bigger share of a smaller salary, and progressive bands mean lower earners face lower average rates. Our worked example showed a part-timer keeping £23.91/hour net versus £22.44/hour for the full-time equivalent.
How do I calculate my true hourly rate from my annual salary?
Divide your gross annual salary by your total yearly hours (weekly contractual hours × 52). For example: £36,000 ÷ (37.5 × 52) = £18.46/hour. Don’t forget to use your contractual hours, not the hours you actually end up working.
Can an employer legally pay part-time staff less per hour?
Only with objective justification. UK law requires part-time workers to receive the same hourly pay as comparable full-time workers doing the same or broadly similar work. Different rates need a genuine, documented business reason — “they’re part-time” isn’t one.
Why does my payslip’s hourly figure look lower than my calculation?
Common culprits: salary-sacrifice schemes (pension, cycle-to-work) that reduce your headline salary, unpaid breaks counted in your working week, or rounding in payroll software. Check your gross pay line and contracted hours before worrying.
Does going part-time affect my holiday entitlement?
It’s pro-rata, so you get the same amount of time off in weeks, just fewer days. 25 days at full-time becomes 15 days at 0.6 FTE — both equal five weeks. Watch out for bank holidays if they fall on your non-working days; good employers adjust for this.
Conclusion
The belief that part-time work means worse hourly pay is one of the most persistent myths in British employment — and the maths kills it cleanly. The same job pays the same hourly rate regardless of your FTE; the smaller salary is just the full figure scaled to your hours. Run the 2026/27 tax numbers and the picture gets even kinder to part-timers, who can end up keeping more per hour after deductions thanks to progressive taxation.
That doesn’t mean part-time work has no costs. Overtime thresholds, slower pension growth, and the very real promotion gap all deserve scrutiny before you sign. But scrutinise the right things. Judge a part-time offer by its hourly rate, its package, and its prospects — not by the shock of seeing a smaller annual number. Once you compare hour for hour, you’re comparing honestly, and that’s the only comparison that matters.
