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UK PAY CALCULATOR

Pro Rata Salary Calculator (UK)

Working part-time? Turn a full-time salary into the pay, holiday and pension you actually get.

Calculate your UK pro rata paySample values shown — replace them with your figures.

£
days
%
Your pro rata annual salary
£21,000.0060%
Monthly gross: £1,750.00·Holiday: 16.8 days·Estimated employee pension on qualifying earnings: £738.00
Calculation methodYour days ÷ full-time days

    Gross estimates only. The pension estimate uses the 2026/27 qualifying-earnings band (£6,240–£50,270); your scheme rules take priority.

    How it works

    One working-pattern ratio, three useful figures

    The main calculation is full-time salary × (your working days ÷ full-time working days). The same ratio gives a comparable part-time holiday allowance. Your pension estimate is then calculated from the pro rata salary.

    Use the UK part-time salary calculator for a focused pay conversion, the UK pro rata holiday calculator to scale a full-year allowance to a weekly working pattern, or the pro rata annual leave calculator when employment starts or ends during the leave year.

    £35,000 × (3 ÷ 5) = £21,000 a year

    ▲ Before relying on the figure

    Use the full-time comparison written into your offer or contract. Employers may express a working pattern in days or hours, and pensionable pay can differ from total gross pay.

    Check GOV.UK holiday entitlement guidance →

    Questions

    Frequently asked

    How do I calculate a pro rata salary in the UK?
    Divide the days or hours you work by the full-time pattern, then multiply the full-time annual salary by that fraction. For example, 3 days out of 5 is 60%, so £35,000 becomes £21,000 gross a year.
    Is pro rata pay before or after tax?
    Pro rata salary is normally a gross figure before Income Tax, National Insurance, pension contributions and other deductions.
    How much holiday does a part-time worker get?
    A common calculation scales the full-time entitlement by the same working-pattern fraction. Someone working 3 days instead of 5 receives 60% of the comparable full-time entitlement. GOV.UK says statutory leave is 5.6 weeks, capped at 28 days for people working 5 days or more.
    Are bank holidays included?
    An employer can include bank holidays within statutory annual leave. Check whether the full-time entitlement you enter already includes them so they are not counted twice.
    Does this calculate take-home pay?
    No. It calculates gross pro rata pay and a simple pension contribution estimate. It does not calculate tax, National Insurance or scheme-specific pension rules.

    Also try

    More single-purpose calculators

    Pro rata holiday calculator →Pro rata annual leave calculator →Part-time salary calculator →