National Insurance
Introduction to National Insurance
What National Insurance is, National Insurance classes and how much you need to pay.
National Insurance numbers
Find a lost National Insurance number, apply for one, or get a National Insurance number for a looked after child.
Paying Income Tax and National Insurance
How to pay Class 2 and Class 3 National Insurance and how to pay your Self Assessment and Simple Assessment tax bills
National Insurance rates and classes
Different rates and categories of National Insurance including self-employed National Insurance rates.
Refunds for National Insurance
How to apply for a National Insurance refund
Voluntary contributions for National Insurance
How and when to pay voluntary National Insurance contributions, eligibility and rates
Paying National Insurance for workers from the UK working in the EU, Gibraltar, Iceland, Liechtenstein, Norway, or Switzerland
Check if you should pay National Insurance in the UK or social security contributions in the EU, Gibraltar, Iceland, Liechtenstein, Norway, or Switzerland.
Paying social security contributions for workers coming to the UK from the EU, Iceland, Liechtenstein, Norway, or Switzerland
Check where you need to pay social security contributions if you’re from the EU, Iceland, Liechtenstein, Norway or Switzerland and are working in UK.