ETF

ETF

Index Fund or ETF: Why the Fund Usually Wins in Spain (and the Condition Almost Nobody Checks)

September 8, 2026

If you’ve read anything about passive investing, you’ve probably come across this idea: an index fund and an ETF tracking the same index are, in practice, the same product with a different wrapper. Similar fees, same diversification, same “don’t try to beat the market” philosophy. And up to that point, it’s true.

What almost nobody spells out with the same detail is that, in Spain, they’re not taxed the same at all. One lets you move your money from one place to another without paying tax along the way. The other doesn’t. And the advantage of the first one is only real if a very specific condition is met, one that most people don’t even know exists, let alone check.

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