Blaze HR Logo
Book a demo
Try it for free
Blaze HR Logo
Book a free demo
calculator

Pro Rata Salary Calculator

Pro Rata Calculator UK makes it simple to work out part-time salary, holiday entitlement, and pension contributions accurately.

£
hours
hours
%
Press Enter in any field to re-calc.

Pro-rata Holiday (UK statutory)

days
Uses 5.6 weeks. Round fairly if you do so in practice.

Results

£0.00Hourly rate
£0.00Pro-rata weekly (gross)
£0.00Pro-rata monthly (gross)
£0.00Pro-rata annual (gross)
£0.00Employee pension deduction
£0.00NI (rough estimate)
£0.00Estimated net after pension & NI*
0.0 daysPro-rata holiday entitlement
* Net is indicative only. NI here is a simple 8% illustration when the NI box is unticked. For real payroll, use current HMRC thresholds/bands.

How to Use a Pro Rata Calculator UK

The Pro Rata Calculator is a simple way to work out part-time pay, holiday entitlement, and pension contributions in the UK. It adjusts a full-time salary to match the actual hours worked, giving you an accurate figure every time.

To use the calculator:

  • Enter the full-time annual salary.

  • Add the standard weekly hours for a full-time role.

  • Enter the number of hours worked part-time.

  • (Optional) Include a pension contribution percentage.

  • If National Insurance doesn’t apply, just tick the box.

Once the details are entered, the Pro Rata Salary Calculator UK will instantly show the adjusted salary in the blue results box. The calculation is based on the ratio of part-time to full-time hours, so as long as your inputs are correct, your pro rata pay will be accurate.

This makes the Pro Rata Pay Calculator useful for both employers checking staff wages and employees confirming their part-time salary. For more HR insights and updates, you can also follow Blaze HR on LinkedIn:
https://www.linkedin.com/company/104347012/

For more on statutory holiday entitlement, visit
GOV.UK holiday entitlement.

Helpful Guides

What is a pro rata basis?
How to calculate pro rata salary?
Working out pro rata holiday entitlement?
Is part-time working right for your business?
Making payroll simple with Blaze HR
Check Leave Balance

What is a pro rata basis?

“Proportional rate” is shortened to “pro rata.” In payroll, it refers to how part-time workers are paid based on their hours compared to full-time workers.

Full-time employees usually get a fixed yearly salary. Part-time workers also receive salaries, but their pay is pro rata, meaning it is adjusted for the fewer hours they work.

It’s important to note that pro rata pay is only for part-time workers. Typically, temporary employees, contractors, or freelancers do not receive pro rata compensation.

For more information about Blaze HR and its HR technology solutions, you can also view the company profile on Crunchbase:
https://www.crunchbase.com/organization/blaze-hr/tech_details

How to Calculate Pro Rata Salary Using a Pro Rata Calculator UK

Here is a breakdown to help you understand and calculate your employees’ pro rata salary on your own, even though our calculator tool makes it easy. First, find the full-time equivalent salary and divide it by 52 weeks. Then, divide that result by the number of full-time hours worked per week at your company, such as 37.5 out of 40. This will give you your hourly rate. Next, multiply this figure by the actual number of working hours per week (the pro rata hours per week).

Once you have this number, multiply it by 52 to get the annual pro rata salary. To find the actual amount, you need to consider several additional factors, including National Insurance. To make things a bit easier, our pro rata salary calculator does all the maths for you.

You can also explore how Blaze HR compares with other workforce management tools on SourceForge:
https://sourceforge.net/software/compare/Blaze-HR-vs-When-I-Work/

How to Work Out Pro Rata Holiday?

  1. To start, a full-time worker in the UK who works five days a week is entitled to 5.6 weeks of holiday each year, which usually equals 28 days including bank holidays.

  2. Check the working days of your part-time employee. Find out how many days a week they usually work, like three or four.

  3. Do the math. To figure out their annual holiday allowance, multiply the number of days they work each week by 5.6.

    • Four days a week: 4 × 5.6 = 22.4 days of holiday

    • Three days a week: 3 × 5.6 = 16.8 days of holiday

  4. Round if needed. Some employers round to the nearest half-day or full day. If you choose to do this, make sure it’s fair and consistent for all employees.

  5. Double-check compliance. Always ensure the entitlement you calculated matches their working pattern and meets the legal minimum. It’s better to verify than risk giving too little leave.

  6. Use Blaze HR’s holiday entitlement calculator. If you want to avoid the maths, Blaze HR’s calculator determines it quickly, saving time and ensuring accuracy.

You can also view the Blaze HR company listing on Cylex UK here:
https://basildon.cylex-uk.co.uk/company/blaze-hr-28825688.html

Is Part-Time Employment the Right Fit for Your Business? | Pro Rata Calculator UK

It’s important to think about whether moving someone to part-time hours or hiring them on a pro rata basis is the best choice for your business.

Part-time jobs can lower benefit-related expenses, increase employee flexibility, and save on payroll costs.

However, there are drawbacks. These include higher employee turnover, differences between full-time and part-time workers, and sometimes a drop in engagement with the company culture.

To ensure part-time workers feel as valued and committed as your full-time staff, you need to integrate them effectively. You have the final decision, but be sure their pay and paid time off are set fairly and accurately.

For more HR insights and updates, you can also follow Blaze HR on LinkedIn:
https://www.linkedin.com/company/blazehr/?originalSubdomain=uk

Payroll Made Easy with Blaze HR

Payroll management doesn’t have to be hard. Blaze HR keeps all your employee and pay information in one secure place, ready for payday.

You can export payroll data instantly, review employee records quickly, and ensure everything is correct and meets regulations.

Blaze HR makes payroll faster, simpler, and less stressful. You can also manage HR tasks on the go with the Blaze HR, available on Google Play:
https://play.google.com/store/apps/details?id=com.blazehr.blazhr

Let’s Work Together And Make HR Simpler

Start your free trial of Blaze HR and see how easy it is to save time, cut down admin, and give your team the tools they need to perform at their best. You can also explore the Blaze HR software profile on Software Suggest:
https://www.softwaresuggest.com/blaze-hr

Book 30‑min Demo
Start 30‑Day Free Trial
Check Leave Balance
Pro Rata Calculator

Frequently asked questions

What does “pro rata” mean?

"Pro rata” means something is calculated in proportion to the time, amount, or share you are entitled to. For example, if you start a job partway through the year, your salary or holiday entitlement is calculated on a pro rata basis, so you get only the portion you’ve earned.

Are bank holidays included in pro rata holiday entitlement?

Bank holidays may be included in pro rata holiday entitlement depending on company policy. If full-time staff receive bank holidays, part-time employees should get a proportional allowance.

Who is eligible for pro rata pay?

Part-time employees are eligible for pro rata pay, while freelancers and temporary staff usually are not.

How to work out pro rata holiday

To work out pro rata holiday, take your full annual entitlement and multiply it by the portion of the year you work.

Related UK Salary & HR Calculators

Scroll to Top