I've reported on witholding tax on my us pension distributions before and here's some good news. I'm a US citizen, UK resident. 3 years ago both Fidelity and TIAA said they were required to take 10% witholding on distributions. 2 years ago Fidelity said they didn't have to take any witholding. This year, TIAA has finally followed suit (although they messed up the administration of this, then rectified). It's just one less little hassle - there's no tax to claim with my US return, and there's now no need to fill out the UK foreign tax credit page. If you're in the same boat, by all means tell your pension company you don't want witholding and see how it goes. The tide seems to be turning.