The UK has a double taxation agreement with Spain to make sure that you do not pay tax on the same income in both countries. You can ask the relevant tax authority about double taxation relief.
Existing double taxation arrangements for UK nationals living in Spain have not changed.
As a Spanish resident, you must declare your global income to the Spanish authorities, no matter which country it came from. If you are not a resident, you will only pay tax on income that came from Spain.
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You should get professional advice on paying tax in Spain. You can use a registered ‘gestor’ or find an English-speaking lawyer.
Declaration of overseas assets
You may need to file an annual declaration of overseas assets called a Modelo 720. There are severe penalties if you do not file, or give incorrect or incomplete information.
Find out if you need to pay National Insurance in the UK or social security contributions in Spain.
Whether UK banks can provide service to customers living in the EEA is a matter of local law and regulation. Your bank or finance provider should contact you if they need to make any changes to your product or the way they provide it. If you have any concerns about whether you might be affected, contact your provider or seek independent financial advice.
Read the Money and Pension Service guidance on banking, insurance and financial services changes for more information on cross-border banking.