PAYE (Pay As You Earn)

How PAYE Affects Your Take Home Pay

PAYE is the system used by HMRC to collect income tax and National Insurance from employees throughout the year, rather than requiring a lump-sum payment. Your employer calculates your deductions each pay period based on your tax code and applies them before paying you.

The system works on a cumulative basis, meaning your tax-free allowance is spread evenly across the year. If you start a new job mid-year without a P45, you may be placed on an emergency tax code and temporarily over-taxed until HMRC issues the correct code. You can check your tax code through your HMRC personal tax account.

Most UK employees are on PAYE and never need to file a self-assessment tax return. However, if you have additional income sources (rental income, self-employment, or investment gains above your allowances), you may need to register for self-assessment alongside PAYE.

How Paye Works in Practice

Pay As You Earn (PAYE) is the system HMRC uses to collect income tax and National Insurance from employees. Your employer deducts tax before paying you, based on your tax code. Most UK employees are on PAYE, and if your tax code is correct, you should pay the right amount of tax automatically without needing to file a self-assessment return.

Practical Tips

Your PAYE tax code determines how much tax-free income you receive each pay period. The standard code 1257L gives you £12,570 tax-free per year (£1,047.50/month). If your code is wrong, you could be overpaying or underpaying tax. Check your tax code on your payslip or P60 — if it does not look right, contact HMRC to correct it. See tax code 1257L explained.

Related Topics

Common PAYE issues include emergency tax codes (applied when starting a new job without a P45), incorrect tax codes from HMRC, and underpayment notices. If you receive a P800 from HMRC, it means your tax was calculated incorrectly and you owe money or are due a refund.