If you work for a local council and are employed part-time, your salary will usually be calculated on a pro rata basis. This means your pay is adjusted according to the hours or working pattern you complete compared with a comparable full-time employee.

Understanding Local Government Pro Rata Pay can be particularly important when checking a job offer, comparing part-time and full-time salaries, calculating monthly earnings, or checking whether your payslip appears correct.

Local government employees may be covered by the National Joint Council (NJC) for Local Government Services and its national terms and conditions, commonly known as the Green Book. The Local Government Association (LGA) states that the Green Book provides the national framework for pay and employment conditions for local government services, although individual councils can have local variations.

This guide explains how local government pro rata pay works, how to calculate it, what happens with annual leave and public holidays, and what you should check before relying on a calculation.

What Is Local Government Pro Rata Pay?

Local Government Pro Rata Pay is the salary a part-time local government employee receives in proportion to the hours they work compared with a full-time equivalent employee.

For example, suppose a full-time council role pays £32,000 a year for 37 hours per week, while you work 18.5 hours per week.

You work:

18.5 ÷ 37 = 0.5

You are therefore working 50% of the full-time hours.

Your basic annual salary would be:

£32,000 × 0.5 = £16,000

So your pro rata salary would be £16,000 per year, before tax, National Insurance, pension contributions and any other deductions.

The important point is that the advertised full-time salary is normally the starting point. Your actual salary depends on your contractual hours and working arrangement.

The Green Book specifically states that part-time employees should receive pay and conditions of service on a pro rata basis compared with comparable full-time employees in the authority.

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How Does Pro Rata Pay Work in Local Government?

Local government pay can look complicated because councils use different job roles, pay points, working patterns and local arrangements.

The NJC negotiates national pay arrangements for many local government employees. However, there are not nationally determined grades for every individual local government job. Councils decide where particular roles sit on the pay spine, taking factors such as job size and local labour market conditions into account.

This means two important calculations should not be confused:

1. Determining the full-time salary for the role
2. Calculating the part-time employee’s pro rata salary

Once the full-time equivalent salary is known, the basic pro rata calculation is relatively straightforward.

Basic Local Government Pro Rata Formula

A common formula is:

Pro Rata Salary = Full-Time Salary × (Employee’s Contracted Hours ÷ Full-Time Hours)

For example:

• Full-time salary: £30,000
• Full-time hours: 37 per week
• Part-time hours: 22.2 per week

Calculation:

£30,000 × (22.2 ÷ 37) = £18,000

The employee would therefore earn £18,000 per year before deductions.

Local Government Pro Rata Pay Example

Consider a council employee who is offered a role with a full-time equivalent salary of £35,000.

The comparable full-time working week is 35 hours, but the employee works 21 hours per week.

First calculate the fraction of full-time hours:

21 ÷ 35 = 0.6

Then multiply the full-time salary by 0.6:

£35,000 × 0.6 = £21,000

The employee’s annual pro rata salary is therefore £21,000.

Their approximate gross monthly salary would be:

£21,000 ÷ 12 = £1,750

This is gross pay, not take-home pay. Income Tax, National Insurance, pension contributions and other deductions may reduce the amount actually received.

Local Government Pro Rata Calculator Formula

A Pro Rata Calculator UK can make this calculation faster.

For a straightforward part-time council position, you can use:

Annual Pro Rata Salary = Full-Time Equivalent Salary × Part-Time Hours ÷ Full-Time Hours

You can also calculate the percentage of a full-time role first:

Full-Time Percentage = Part-Time Hours ÷ Full-Time Hours × 100

For example, if you work 24 hours and the full-time week is 37 hours:

24 ÷ 37 × 100 = 64.86%

If the full-time salary is £33,000:

£33,000 × 64.86% = approximately £21,404

Your annual gross salary would therefore be approximately £21,404.

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Why the Full-Time Working Hours Matter

One of the most common mistakes when calculating pro rata pay is assuming that every local government employee has the same full-time working week.

That is not necessarily the case.

Your contract may specify a particular full-time working pattern for the comparable role. The relevant figure could differ between employers, occupations or working arrangements.

For this reason, do not automatically assume that 37 hours is the correct denominator.

Instead, check:

• Your employment contract
• The job advertisement
• The council’s terms and conditions
• Your full-time equivalent hours
• The relevant local pay and grading arrangements

The LGA notes that individual local authorities can have alternative local provisions alongside national Green Book arrangements.

Example Using Different Full-Time Hours

Suppose the full-time salary is £30,000.

If the full-time working week is 37 hours and you work 20 hours:

£30,000 × 20 ÷ 37 = £16,216.22

But if the comparable full-time working week is 35 hours:

£30,000 × 20 ÷ 35 = £17,142.86

The difference is more than £900 a year.

That is why identifying the correct full-time hours is essential.

Does Pro Rata Apply to Annual Leave?

Yes, part-time local government employees generally receive annual leave on a pro rata basis compared with comparable full-time employees.

However, annual leave calculations can be more complicated than simply multiplying the number of full-time days by a percentage.

The Green Book’s pro rata principle applies to pay and conditions, while local government guidance also addresses the calculation of public holiday entitlement for part-time employees.

For example, if a full-time employee receives a particular annual leave entitlement and you work 60% of full-time hours, your entitlement will generally reflect your part-time proportion.

The exact calculation should follow your employer’s contractual arrangements.

Read More: Pro Rata Calculator UK- Fixed-Term Contract Pay

What About Bank Holidays for Part-Time Council Employees?

Bank and public holiday calculations can be particularly confusing for part-time workers.

Suppose a full-time employee works five days a week, Monday to Friday, while a part-time employee works three days a week.

A public holiday that falls on a day the part-time employee does not normally work still needs to be considered when calculating the employee’s overall entitlement. Simply ignoring that holiday can produce an unfair result.

The LGA has specific guidance on part-time employees and public holidays because authorities have historically faced difficulties implementing pro rata public holiday entitlement consistently.

Your council may express the entitlement in hours rather than days. This can make the calculation fairer when employees work different numbers of hours on different days.

What About Term-Time Only Local Government Employees?

Term-time working requires a slightly different approach.

Some local authority and school support employees work during school terms rather than throughout the entire year. Their annual pay can incorporate:

• Weeks actually worked
• Pro rata annual leave
• Public holidays
• Other applicable paid leave or entitlement

The Green Book guidance explains that term-time-only employees may work around 39 weeks in a year, with their accrued holiday and other entitlement included in the calculation. Their annual salary may then be paid in 12 equal monthly instalments.

This means the amount paid in a particular month does not necessarily correspond directly to the number of hours worked during that month.

For example, an employee may receive the same monthly salary throughout the year even though they do not work during school holiday periods.

Therefore, a simple annual salary × hours formula may not be enough for a term-time-only calculation.

Local Government Pro Rata Pay and NJC Pay Scales

Many local authority employees are covered by the NJC pay framework.

The NJC agrees national pay arrangements for the relevant workforce, while councils apply the pay spine to their own roles. The LGA describes the NJC as the body responsible for negotiating pay and terms and conditions for local government services employees.

The pay spine is periodically updated through national pay agreements.

For example, the LGA’s 2026 NJC employer circular proposed a 3.30% increase from 1 April 2026 across NJC pay points 3 to 43, as part of the 2026 pay round. The status and implementation of a pay award should always be checked against the latest official council or NJC information rather than relying on an old pay table.

This distinction matters because a calculator should use the current full-time equivalent salary applicable to your role, not an outdated figure.

Local Government Pro Rata Pay Table

The following example shows how the same full-time salary changes according to contracted hours.

Assume:

• Full-time salary: £32,000
• Full-time working week: 37 hours

Part-Time Hours	Full-Time Percentage	Annual Pro Rata Salary
7.4 hours	20%	£6,400
14.8 hours	40%	£12,800
18.5 hours	50%	£16,000
22.2 hours	60%	£19,200
25.9 hours	70%	£22,400
29.6 hours	80%	£25,600
33.3 hours	90%	£28,800
37 hours	100%	£32,000

These figures are examples only. Your actual salary depends on the full-time equivalent salary and contractual hours for your position.

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How to Calculate Monthly Pro Rata Pay

Once you know the annual pro rata salary, calculating gross monthly pay is simple if the salary is paid evenly over 12 months.

Monthly Gross Pay = Annual Pro Rata Salary ÷ 12

For example:

• Full-time salary: £34,000
• Full-time hours: 37
• Part-time hours: 18.5

First calculate the annual salary:

£34,000 × 18.5 ÷ 37 = £17,000

Then calculate monthly pay:

£17,000 ÷ 12 = £1,416.67

So the employee’s gross monthly salary would be approximately £1,416.67.

This does not represent the employee’s net pay. Tax, National Insurance, pension contributions and other deductions are calculated separately.

What If You Start or Leave a Council Job Partway Through the Year?

Starting or leaving employment partway through a pay period can introduce another calculation.

Your employer may need to calculate the salary due for the portion of the year or pay period you actually worked. The exact method depends on your contract and payroll rules.

For example, an annual pro rata salary of £24,000 does not automatically mean that someone who works for three months will receive exactly £6,000. The actual calculation can depend on the dates involved, payroll cut-off dates and the employer’s contractual method for calculating part-period pay.

This is one situation where a basic pro rata calculator should not be treated as a payroll authority.

Does Local Government Pro Rata Pay Affect Pension Contributions?

Part-time employees can still participate in an applicable workplace pension scheme, subject to the scheme’s rules and eligibility requirements.

Your pensionable pay may be based on the actual salary you receive rather than the full-time equivalent salary. However, pension arrangements can be more complex than simply applying the same percentage used for basic salary.

If you are enrolled in the Local Government Pension Scheme (LGPS), check the specific rules and your employer’s pension information when estimating contributions or benefits.

A salary calculator can estimate gross pay, but it should not be used as a substitute for an official pension calculation.

Common Local Government Pro Rata Pay Mistakes

Using the Full-Time Salary as Your Actual Salary

If a job advertisement says £30,000 to £35,000 full-time and you are working 50% of full-time hours, you should not normally expect to receive the full £30,000 to £35,000.

The salary needs to be adjusted according to your contracted hours.

Using the Wrong Full-Time Hours

Do not automatically use 37 hours unless that is the correct full-time working week for your role.

Check your contract or the job advertisement.

Confusing Gross Pay With Take-Home Pay

Pro rata salary calculations normally produce gross pay.

Your take-home pay will be lower after applicable deductions.

Ignoring Local Variations

The Green Book provides a national framework, but councils can have local provisions.

Always check the conditions attached to your particular employment.

Applying a Simple Formula to Term-Time Work

Term-time-only employees may have holiday entitlement and pay arrangements incorporated into their annual salary. A basic hours-based calculation may therefore produce an incomplete answer.

How to Check Your Local Government Pro Rata Salary

Before calculating your expected salary, collect these figures:

1. Full-time equivalent annual salary
2. Full-time weekly hours
3. Your contracted weekly hours
4. Your working pattern
5. Whether you are term-time only
6. Any applicable local pay arrangements
7. Any allowances included separately from basic salary

Then use:

Pro Rata Salary = Full-Time Salary × Contracted Hours ÷ Full-Time Hours

If your employment arrangement includes additional complexities, such as term-time working, irregular hours or special allowances, confirm the result with your employer’s HR or payroll department.

When Should You Use a Pro Rata Calculator UK?

A Pro Rata Calculator UK is useful when you want a quick estimate of part-time earnings.

You might use it when:

• Comparing full-time and part-time jobs
• Checking a council job advertisement
• Estimating annual gross income
• Calculating approximate monthly salary
• Comparing different working patterns
• Planning a household budget
• Checking whether a salary offer appears reasonable
• Estimating the effect of reducing your working hours

For local government roles, the calculator is most useful when you already know the correct full-time equivalent salary and working hours.

Expert Tips for Calculating Local Government Pro Rata Pay

Use the FTE salary, not an assumed salary.
The full-time equivalent salary should come from the actual job offer, contract or current council pay information.

Check the effective date of the pay rate.
NJC pay awards can change the underlying full-time salary. Use the rate applicable to the relevant period.

Calculate using hours where possible.
Hours are often more precise than simply counting working days, particularly when employees have different daily working patterns.

Separate basic salary from allowances.
Some allowances may have different rules from basic salary. The Green Book FAQ, for example, notes that the lump-sum element of the national car allowance scheme is not pro-rated in the same way as salary for part-time employees.

Treat calculator results as estimates.
An online calculator can show the mathematical result of a pro rata formula, but your employer’s payroll calculation is the authoritative figure.

Final Thoughts

Calculating Local Government Pro Rata Pay is straightforward when you know the correct full-time equivalent salary and working hours. The basic calculation is:

Full-Time Salary × Part-Time Hours ÷ Full-Time Hours

However, local government employment can involve additional factors, including NJC pay arrangements, council-specific provisions, annual leave, public holidays, term-time working and separate allowances.

The most reliable approach is to start with the salary and working hours stated in your contract or official job advertisement. Then use a Pro Rata Calculator UK to estimate your gross annual and monthly pay.

For anything affecting your actual payroll, always compare the calculation with your employment contract and the latest information from your council or payroll department. National local government arrangements can change, and individual councils may apply local provisions within the wider framework.