# Pro rata salary calculator 2026/27 UK | ComputeNow URL: https://computenow.co.uk/pro-rata-salary-calculator/ > Work out a pro-rata salary for part-time hours or term-time work, and what you take home after tax and National Insurance. This calculator shows a worked example below. To use your own figures, add them to the URL as query parameters (listed in https://computenow.co.uk/llms.txt), for example https://computenow.co.uk/pro-rata-salary-calculator/?=. [What's Left, step 1 of 7: What will I take home?](https://computenow.co.uk/money-plan/#steps) # Pro-rata salary calculator Work out your salary and take-home pay for part-time or reduced hours. 2026/27 tax yearEngland, Wales and Northern IrelandRates checked 18 October 2026 By the ComputeNow team, checked against GOV.UK and HMRC[Sources (3)](#sources)[How we calculate](https://computenow.co.uk/methodology/) You'll take home about £1,553 a month. That's about £358 a week, or £18,640 a year, from £21,000 a year before tax. ## Where your money goes - Income Tax£141 a monthYou pay no tax on the first £12,570 a year, your tax-free allowance. Above that, most pay is taxed at 20%. - National Insurance£56 a month8% of what you earn between £12,570 and £50,270 a year, and 2% above that. It builds your State Pension. Of every £100 you earn, you keep £89 - Take-home £18,639.60 (89%) - Income Tax £1,686.00 (8%) - National Insurance £674.40 (3%) If you earned £1,000 more a year, you would keep about £720 of it, or 72p of every extra £1. If your hours or pay rate look wrong, ask your employer's payroll team. If your tax code looks wrong, HMRC sets it: check it in the HMRC app or on GOV.UK. Have your latest payslip and your P45 or P60 to hand. See every line ## Your full breakdown | Item | Year | Month | | --- | --- | --- | | Pro-rata salary | £21,000.00 | £1,750.00 | | Income Tax | £1,686.00 | £140.50 | | National Insurance | £674.40 | £56.20 | | Take-home pay | £18,639.60 | £1,553.30 | This is an estimate. Your payslip can be a little different because of how your employer rounds figures or when deductions are taken. We've assumed 2026/27 rates for England, Wales and Northern Ireland, a standard tax code, no pension and no student loan; change these under More options. ### Next steps - [Take-home pay calculator](https://computenow.co.uk/take-home-pay/?salary=21000)Your pro-rata pay after tax, ready to add to What's Left. [What's Left](https://computenow.co.uk/money-plan/) adds up your monthly figures from each calculator and shows what is left each month. [You'll take home about £1,553 Breakdown](#result) ## Why your payslip might differ Your payslip can be different from this if: - your tax code isn't 1257L (check the code on your payslip); - you pay into a pension or repay a student loan (add them under More options); - you started or changed job this tax year, and you're on an emergency code; - this month included a bonus or overtime; - you have more than one job; - you live in Scotland, where the tax rates are different. For hours or pay, ask your payroll team. For a tax code, ask HMRC. [Why is my pay different this month?](https://computenow.co.uk/guides/why-is-my-pay-different-this-month/) ## How pro-rata pay is worked out Pro-rata pay is the full-time salary × your hours ÷ full-time hours: £35,000 × 22.5 ÷ 37.5 = £21,000. Holiday entitlement is pro-rated in the same way, but your hourly rate stays the same as a full-time colleague's. ## Related calculators [Take-home pay calculator Your pay after Income Tax and NI](https://computenow.co.uk/take-home-pay/)[Hourly wage calculator Hourly rate to yearly salary](https://computenow.co.uk/hourly-wage-calculator/)[Compare two salaries See the difference after tax](https://computenow.co.uk/compare-salaries/) ## Guides and help ### Our guides [How Income Tax bands work in 2026/27 Personal Allowance, basic, higher and additional rate](https://computenow.co.uk/guides/income-tax-bands-2026-27/) ### Official services and free advice [Part-time worker rights GOV.UK: pay and benefits pro rata](https://www.gov.uk/part-time-worker-rights)[Calculate holiday entitlement GOV.UK: including part-time and shifts](https://www.gov.uk/calculate-your-holiday-entitlement)[National Minimum Wage rates GOV.UK: the lowest legal hourly pay](https://www.gov.uk/national-minimum-wage-rates) ## Sources Each source was last checked on 18 October 2026. - [GOV.UK: Rates and thresholds for employers 2026 to 2027](https://www.gov.uk/guidance/rates-and-thresholds-for-employers-2026-to-2027) - [GOV.UK: Income Tax rates and Personal Allowances](https://www.gov.uk/income-tax-rates) - [GOV.UK: National Insurance rates and categories](https://www.gov.uk/national-insurance-rates-letters) These results are an estimate, not financial advice. They use the 2026/27 rates in force on 24 October 2026 and the inputs shown, so your actual tax, pay or costs may differ. Before making a decision about your money, check the figures with HMRC or your provider, or speak to a regulated financial adviser. Free, impartial guidance is available from MoneyHelper. This page explains the rules using the 2026/27 rates in force on 24 October 2026. It is general information, not financial advice. For decisions about your own money, speak to a regulated financial adviser, or get free, impartial guidance from MoneyHelper.