In the UK or elsewhere, you might have built wealth using ISAs, premium bonds, or investment portfolios with little thought for cross-border implications. But once you become tax resident in Spain, those same structures can start working against you rather than for you.
A New Life, a New Set of Rules
One of the biggest surprises for newcomers to Spain is that Spain taxes your worldwide income and gains — not just what’s earned here. That includes dividends, interest, and even growth within investment funds.
It’s easy to assume that investments left “back home” can be ignored, but in reality, the Spanish tax authorities (Hacienda) expect full reporting of your global assets.
That’s where many expats fall into avoidable tax traps:
– Selling shares or funds that trigger capital gains tax at 19–28%
– Holding money in non-compliant offshore accounts
– Missing annual reporting obligations on overseas assets (Modelo 720/721)