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Holiday calculator to work out statutory holiday leave in days or hours

Working time directive and maximum weekly working hours including how to calculate your weekly working hours and working time limits if you're a young worker.

• Overview

  You cannot work more than 48 hours a week on average - normally averaged…

• Calculating your working hours

  Average working hours are calculated over a ‘reference’ period, normally…

• Opting out of the 48 hour week

  You can choose to work more than 48 hours a week on average if you’re over…

What to do if you need to pay more tax or you're due a refund, including P800 tax calculations from HM Revenue and Customs (HMRC).

• If you’ve not paid the right amount of tax

  If you’ve paid too much or too little tax by the end of the tax year (5…

• If your tax calculation letter (P800) says you’re due a refund

  Your tax calculation letter (also known as a P800) will tell you how you…

• If your tax calculation letter (P800) says you owe tax

  HM Revenue and Customs (HMRC) will collect the tax you owe over the next…

Holiday entitlement or annual leave - information for employers and workers on entitlement, calculating leave, taking leave, accruing leave and disputes

Your pay - your payslip, performance-related pay, deductions and how to work out your weekly pay

Calculate an employee’s maternity pay (SMP), paternity or adoption pay, relevant period and average weekly earnings

Calculate your part-year profits to end your Tax Credits award and claim Universal Credit if you’re self-employed

Use form PSA1 or send an informal calculation to tell HMRC about the value of items included in your PAYE Settlement Agreement.

• Updated: 4 June 2025

Employer calculator - calculate your employee’s statutory redundancy payment

Direct Earnings Attachment (DEA) and deducting any money an employee owes the Department for Work and Pensions (DWP) from their pay