Do you have to pay tax on your German earnings (earned in Germany, which you already pay tax to the German authorities on)? Almost all countries only tax you o

Do you have to pay tax on your German earnings (earned in Germany, which you already pay tax to the German authorities on)? Almost all countries only tax you on the money earned (approximately) within their borders. So for most 'expats' it amounts to taxing interest and dividends, and maybe rental income on your old house. Not so the USA, which has a claim on all money earned by Americans world-wide. There's a ~U$100k earnings exemption (so many people aren't paying much tax back to the USA), but high-earning USA expats are in a different tax-world from their overseas colleagues.