(I've posted about this before, but a long time ago, so starting a new topic with an update.)
I'm a UK citizen who worked in the US for four years a while back. Last year I took all the cash from my 401k. Except that Fidelity, the provider, deducted 30% tax. That, I understand, is what they have to do.
I then filed a 1040NR using H&R Block's expat services. My expectation was that I could claim a refund, because this was my only source of US income in 2022, and 30% is far more than I would be taxed as a US citizen on that amount, based on their graduated rates.
After far too long a time spent trying to get a straight answer out of H&R Block (I do not recommend them), they are now telling me that no refund is due: that under the US/UK tax treaty, 30% is what the US takes, and that is that.
Are they right?