As explained on the UK government website, you can keep your UK ISA open if you move abroad. However, it is not possible to add money to the ISA in the tax year after you move (unless you are a crown employee working overseas or their spouse or civil partner). Furthermore, as soon as you stop being a UK resident you must inform your UK ISA provider. If you decide to move back to the UK in the future then you may continue to contribute to your ISA.
ISA’s in Spain – can I get a Spanish ISA?
In simple terms, it is not possible to get an ISA (Individual Savings Account) in Spain. In order to be eligible for a UK ISA, you must be a tax resident of the UK (or a crown employee working overseas or their spouse or civil partner). However, there are financial products available in Spain that are similar to an ISA which can be considered as a viable alternative.
Spanish compliant investment bonds – the ISA alternative?
Similar to the UK ISA, Spanish compliant investment bonds offer tax benefits. Only select accounts are eligible for these benefits, so one must be careful to open an account specifically designated as a Spanish compliant portfolio bond. Although in Spain the gains from the performance of the investment are not completely tax free like the UK ISA, the gains from the Spanish compliant investment bonds still hold notable tax advantages. These advantages can be summarised in the following table: