
Why So Many Expats Discover in January That They Overpaid Thousands in Taxes — And How It Happens
Every January, the same quiet shock spreads through expat communities across Europe. People open tax summaries, simulation tools, or letters from authorities and realise something unsettling: they paid far more tax than they should have. Not because they broke the law. Not because they earned unexpectedly more. But because of structural misunderstandings that only become visible once the year is over. This discovery often happens too late to fix. This article explains why so many expats overpay taxes, why the realisation almost always comes in January, and how perfectly reasonable decisions throughout the year quietly compound into expensive mistakes.
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