Not only that, you are required to disclose all of your foreign bank accounts and their balances on a special "FBAR" form to the FinCEN (separate agency from the IRS). Penalties for any "violations" start at $10,000 each (for so-called "non-willful" violations such as using the wrong currency conversion rate or a different bank branch address) and go up to 25% account value for willful violations (everything is conveniently considered "willful" whenever possible to FinCEN in absence of fact, even the aforementioned common mistakes). Many expats get screwed because they simply didn't know about this esoteric form. Hiring a professional to properly prepare your FBAR with their signature on it is necessary as a form of "insurance" (you are welcome to roll the dice and self-prepare), and of course, it is also an expensive proposition.
There is also no clear guidance for what the disclosure requirements are for foreign cryptocurrency exchange accounts or wallets. Anyone living inside or outside the US with a Binance account could get slammed at anytime in the future for not submitting an FBAR.
If before leaving the US, you lived in California, you also have to pay California state taxes on all world-wide income every year, since you are still considered a California "resident."
There is a foreign earned income exemption up to around 100k. This applies to ordinary income only, not capital gains (e.g. cryptocurrency), and you have to meet rather-stringent requirements to qualify. Also, the exempted income still pushes up your capital gains bracket to the highest applicable rate. This exemption does not apply to your California taxes, only your federal taxes.
You almost never hear about how disfavorable the US tax laws are for expats because there are only 8 million of us.
No taxation without representation, right?
There are exceptions for local taxes, but you still have to file tax returns.
It’s quite irregular. As an American abroad, we get zero awareness or sympathy from people „back home“. They either assume it is normal among countries or that it doesn’t exist.
Taxation treaties only go so far. Declaration overhead, schedule category, and tests make the process hellish. And I haven’t even begun to mention the FBAR and other disclosures. It hurts everyday Americans abroad and barely differentiates against real versus nominal income and cost level.
