Pro-rata calculator

Calculate your take-home pay from your prorated salary if you work part-time. Or find out how your salary will be affected if you reduce working hours.
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How to use the pro-rata calculator:

Use the part-time wage calculator to work out your salary or take-home once National Insurance and Income tax deductions have been made:

  • Enter the full-time annual salary, before any taxes and deductions have been taken out.

  • Enter the number of weekly hours that are considered full-time.

  • Enter the pro-rata number of weekly hours or weekly hours worked.

  • The pro-rata calculator will work out your take-home pay, pro-rata salary, Tax Free Allowance, Taxable Income, National Insurance and Income Tax.

Get the pro-rata salary calculator now.


This calculator is intended only as a guide and uses normal UK tax and NI information to calculate the net salary of an employed person. Tax is complex, and your personal circumstances might mean your take-home pay is different. Seek professional advice if you want to learn more.

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A Wise account is the perfect alternative to having a bank account abroad.

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How much tax will I pay on my take-home?

Under the UK’s PAYE (Pay as you earn) system, employers deduct tax and National Insurance (NI) contributions before they pay you.

Most people can earn a certain amount tax free: in 2020/2021, this is set at £12,500. Tax is then calculated according to the amount you earn, with a 20% tax rate for income up to £37,500, and 40% tax on amounts above this, to £150,000. These figures are adjusted annually, and may vary across different regions of the UK.

Starting with your gross salary, your employer will calculate your tax and NI liabilities, taking into account your tax-free allowance and the tax bands your wage falls into.


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Self-employed income tax calculator

If you’re self-employed in the UK, you can work out your profit after tax, and what you need to pay in Income Tax and National Insurance, with this easy to use self-employed income tax calculator.

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What is pro-rata salary?