Now that the Brexit transition period has ended, you may be worried about when and where you will have to pay National Insurance or social security contributions.
A lot of this will depend on your circumstances and the country you’re working in.
When and Where You Will Pay Social Security/NI Contributions
If you’re from the UK and working within the EU, or in Norway or Switzerland, you’ll only have to pay into one country’s social security system at a time - in the country where the work is taking place. However if you’re a temporary worker in these areas (or in Iceland or Liechtenstein) then there’s the possibility you can get documentation from HMRC to enable you to continue making NI contributions - meaning you won’t pay social security whilst abroad.