Most people start thinking about U.S. taxes after they arrive. By then, the most valuable planning opportunities are already gone.

If you have a bank, brokerage, or retirement account outside the U.S., filing your FBAR or Form 8938 is only half the job. The other half is keeping the records that prove those forms were right.

You set up a one-person company in Hong Kong, the U.K., or Taiwan to run your consulting work or hold a property. Someone told you it is "disregarded" for U.S. tax purposes, so the income just flows onto your return. That part may be true. What is often missed is that a disregarded foreign entity comes with its own information return, Form 8858, and a $10,000 penalty for each year it is not filed.

If you hold a foreign bank account, own international investments, or have financial ties outside the United States, you’ve probably heard the terms FBAR and FATCA — sometimes used as if they mean the same thing. They don’t. Understanding the difference matters, because each has its own form, its own deadline, its own threshold, and its own set of penalties for non-compliance. We know — you've heard about FBAR and FATCA before. But there's a reason we keep coming back to this

Here's the thing most international tax articles won't tell you: by the time you walk into a U.S. embassy to renounce your citizenship or file Form I-407 to abandon your green card, your exit tax exposure is already fixed. There is no going back, no last-minute restructuring, and no do-over. The exit tax under IRC Section 877A doesn't care when you start planning. It cares about what your financial life looked like on the day before you left. That's why identifying the warnin