For a tax refund check, see tax refunds.
Quick facts
- NI number
- Needed to work, but you can start without one
- Self-employed, profits under £6,845
- Can pay Class 2 voluntarily
- Profits over £12,570
- Class 4 is due
- State Pension
- Based on qualifying years
- Gaps
- Voluntary contributions
Your National Insurance number
You will need a National Insurance Number if you live in the United Kingdom (UK), have the right to work in the UK and you’re working, looking for work, or have an offer to start work. You can start work without a National Insurance number if you can prove you have the right to work in the UK. If you already have one you will not be sent a new one.
If you are self-employed
If your profits are less than £6,845 a year, you can voluntarily pay Class 2 contributions. If your profits are more than £12,570 a year, you must pay Class 4 contributions.
Qualifying years and gaps
You qualify for State Pension based on the number of qualifying years you paid National Insurance contributions (NICs). You need to make a minimum amount of contributions or credits in a year for it to count as a qualifying year. You may be able to fill gaps in your record with voluntary contributions.
Common questions
Can I start a job without a National Insurance number?
Yes, if you can prove you have the right to work in the UK.