Salary Calculator Part Time
Calculate your exact part-time salary from any full-time figure
📊 Salary Calculator Part Time
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Part-Time Salary Calculator for UK Employees
This part-time salary calculator shows exactly what you'll earn working reduced hours in the UK. Enter the full-time equivalent salary and your actual hours to see your annual, monthly, weekly, daily, and hourly pay. The tool is designed for UK workers covered by the Part-time Workers (Prevention of Less Favourable Treatment) Regulations 2000.
Part-time work has grown significantly in the UK — ONS data shows 8.7 million people work part-time, representing 25.6% of all employment. Flexible working requests became a day-one right in April 2024, making part-time salary calculations more relevant than ever.
Part-Time Salary by Sector
Different sectors calculate part-time pay differently. The public sector (NHS, education, civil service) uses clearly defined FTE scales, while private sector employers may use various methods.
| Sector | Typical FT Hours | Common PT Patterns | Pay Method |
|---|---|---|---|
| NHS | 37.5 | 22.5h, 30h | AFC pay bands × FTE |
| Education | 32.5 (teachers) | 3-4 days/week | Pay scale × fraction |
| Civil Service | 36-37 | Flexible | Grade salary × FTE |
| Retail | 38-40 | 16-24h contracts | Hourly rate × hours |
For teaching-specific calculations, try our teacher salary calculator which uses the correct pay scales and teaching fractions.
Rights of Part-Time Workers in the UK
UK law guarantees part-time workers receive: the same hourly rate as full-time peers, proportional holiday entitlement (5.6 weeks pro rata), access to the same pension scheme, equal training opportunities, and protection from unfair dismissal. If you believe your part-time pay is incorrect, our salary checker can verify the calculation, and you can raise the matter with ACAS.
How to Use the Salary Calculator Part Time
Using our salary calculator part time is straightforward. Follow these steps to get accurate results for your situation:
- Enter your full-time salary — This is the annual salary for the equivalent full-time role, before any deductions. You'll find this on the job advert or your contract.
- Set the full-time hours — The standard working week for the role. Most UK employers use 37.5 or 40 hours per week.
- Enter your actual hours — Your contracted weekly hours. This is the number you actually work.
- Click Calculate — The salary calculator part time displays your results instantly, with annual, monthly, weekly, daily, and hourly breakdowns.
Worked Example: Salary Calculator Part Time
Let's work through a practical example of salary calculator part time. A marketing coordinator role advertises a full-time salary of £28,000 for 37.5 hours per week. You're offered the position at 25 hours per week.
Step 1 — Find your FTE ratio: 25 ÷ 37.5 = 0.667 (66.7%)
Step 2 — Calculate pro rata salary: £28,000 × 0.667 = £18,667 per year
Step 3 — Monthly breakdown: £18,667 ÷ 12 = £1,556 gross per month
Step 4 — Holiday entitlement: 28 days × 0.667 = 18.7 days pro rata
After income tax and NI (2025/26 rates), your monthly take-home would be approximately £1,377. Use our salary calculator part time above to check your own figures.
Tips for Using This Calculator
- Always use gross salary: Enter the salary before tax and deductions — the salary calculator part time works with gross figures.
- Check your contract: Your employment contract should state your full-time equivalent hours. Common UK standards are 35, 37, 37.5, and 40 hours per week.
- Know your rights: Under the Part-time Workers Regulations 2000, part-time employees must receive the same hourly rate, holiday entitlement (pro rata), and benefits as full-time colleagues.
- Tax personal allowance: For 2025/26, the first £12,570 of earnings is tax-free. If your pro rata salary falls below this, you pay no income tax at all.
- National Insurance: Employee NI is 8% on earnings between £12,570 and £50,270 (2025/26 rates). Check HMRC NI rates for the latest figures.
Pro Rata Holiday Entitlement
Under the Working Time Regulations 1998, all UK workers are entitled to a minimum of 5.6 weeks' paid holiday per year (28 days for full-time). If you work part-time, your entitlement is calculated pro rata based on your actual hours or days worked.
| Days Worked/Week | FTE Ratio | Statutory Days/Year | Bank Holidays (pro rata) |
|---|---|---|---|
| 5 days (full-time) | 1.0 | 28 days | 8 days |
| 4 days/week | 0.8 | 22.4 days | 6.4 days |
| 3 days/week | 0.6 | 16.8 days | 4.8 days |
| 2.5 days/week | 0.5 | 14 days | 4 days |
| 2 days/week | 0.4 | 11.2 days | 3.2 days |
Holiday entitlement is always rounded up — never down — when the result is not a whole number, per ACAS guidance on holiday entitlement. Bank holidays may be included in or added on top of your statutory 28 days, depending on your contract.
All calculations on this page follow ACAS pro rata pay guidelines and are consistent with the UK Employment Rights Act 1996. Tax figures use HMRC 2025/26 rates. The April 2025 National Living Wage of £12.21/hour is applied where relevant.
Related Salary Calculators
Our salary calculator part time is just one of the tools available on ProRataCalculator. You may also find these useful: pro rata calculator, term-time salary calculator, overtime calculator.
Last updated: February 2026. Verified against HMRC 2025/26 tax rates and April 2025 National Living Wage (£12.21/hour).
Frequently Asked Questions
Pro rata means "in proportion." In employment, it refers to adjusting a full-time salary proportionally based on the number of hours, days, or weeks actually worked compared to a full-time equivalent role.
Divide the full-time salary by full-time hours, then multiply by your actual hours. For example: £30,000 ÷ 37.5 hours × 25 hours = £20,000 pro rata.
Pro rata salary is usually calculated before holiday pay. Your holiday entitlement is also pro-rated — part-time workers get 5.6 weeks holiday pro rata, calculated proportionally to hours worked.
Not exactly. Pro rata is the method used to calculate part-time salary. It ensures part-time workers receive the proportional equivalent of the full-time rate, maintaining fairness under UK employment law.