London Setup
National Insurance matters for payroll, but it should not derail your whole first week
A practical guide to what a National Insurance number is, when it matters and how it fits into getting paid in the UK.
Quick answer
Understand NI number
A National Insurance number helps track tax and contributions. You may be able to start work before receiving one if you have the right to work, but you should follow official guidance and employer instructions.
- NI is connected to payroll and tax records.
- Right to work is separate from having the number.
- Ask payroll what they need and when.
What National Insurance is
National Insurance is part of the UK tax and benefits system. The number identifies your record.
- Used by payroll and government systems.
- Different from a visa or right-to-work proof.
- May already exist for some people.
Starting work and payroll
Employers may ask for NI details during onboarding. If you do not have the number yet, ask what they need from you.
Where it fits in setup order
NI is important, but it sits alongside banking, payroll and tax code setup.
| Task | Why | Connected guide |
|---|---|---|
| Confirm right to work | Legal employment basis | Right to work |
| Ask payroll | Know what employer needs | Getting paid |
| Apply or provide NI | Complete records | PAYE |
| Check payslip | Catch errors | PAYE tax |
Common NI mistakes
Do not confuse NI with the whole employment process.
- Assuming NI replaces right-to-work proof.
- Ignoring payroll emails.
- Waiting until first payday to ask questions.
- Not checking payslip details.
Personalised
Browse the Setup hubGet your payroll setup plan
Landing Connect can order NI, banking, PAYE and job-start admin around your move.
- NI number
- Payroll
- PAYE
- Right to work
Takes a few minutes - Free - No sign-up required