National Insurance and Payroll Setup
If you plan to work, sort out your National Insurance number and payroll details early.
Last updated: 10.05.2026
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1. Check if you already have a National Insurance number
A National Insurance number is important for work and tax in the United Kingdom. Some people already have a number without realising it.
What to do: Use the GOV.UK service to find a National Insurance number and follow the steps to check if a number is already linked to you. Look at old payslips or letters if you worked or studied in the country before.
What do you need: You need your personal details, such as full name, date of birth and address history, and any old tax or work documents.
Outcomes: You will know whether you need to apply for a new National Insurance number or simply use your existing one.
Lifehack: Save your National Insurance number in a secure place because you may need it many times for jobs and benefits.
2. Apply for a National Insurance number if you need one
3. Give your employer your right to work proof
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