Last edited by a moderator: Dec 6, 2016 Update: November 2016 - Letters regarding tax self-certification form for United Kingdom HMRC Some Nationwide UK (Ireland) customers recently received a letter from our Head Office in the United Kingdom regarding new international tax compliance regulations. The letter should only have been sent to customers of Nationwide in the United Kingdom. If you are a customer of Nationwide UK (Ireland) only and do not have any accounts with Nationwide in the UK then you do not need to respond or take any further action. We are deeply sorry for any concern or inconvenience this may have caused you. If you have any concerns or would like to discuss this matter further please do not hesitate to contact us on 1800 800 180 and we will be delighted to assist you. About 12 months ago I opened an account with the Nationwide U.K's. Ireland branch in Dublin. Today I got a letter asking me to complete a form called the International tax compliance regulations self certification form. I am being asked to give my Tax Identification number plus a certified copy of my passport or certificate of residency or national identity card or armed forces identity card or shotgun certificate issued by a U.K. police authority etc. They are saying if I don't complete this form and return the documentation they may be required to to share my account information with HMRC. My understanding is that the Nationwide U.K. Ireland is regulated by Ireland's Central Bank and that it was a stand alone Irish operation supported by the U.K. parent just as the Ulster Bank is owned by the Royal Bank of Scotland. Is this letter some sort of mistake sent out to their Irish customers in error?