If you want to work or claim benefits in the UK, you must have a National Insurance number. On this page we explain what a National Insurance number is, where to get one and what to do if you lose or forget it.

You pay National Insurance contributions (NICs) to build up your entitlement to certain state benefits, including the state pension. Here we look at what happens to your National Insurance payments once you reach state pension age.

We look at the special tax rules that can sometimes apply when a trust is created for the benefit of a disabled person.

If you are a trustee or personal representative, you may need to register your trust or a deceased person’s estate under the trust registration service. This page gives an overview of whether and how you need to register.

National Insurance credits are different from National Insurance contributions. Credits are sometimes given in certain situations where you do not work, or only have a limited ability to work and therefore might not be paying National Insurance contributions. These credits protect your future ...

These pages tell you how to claim back overpaid tax from HM Revenue & Customs (HMRC) and what the time limits are for making such a claim.