I am British, and am married to an american. My wife moved to the UK and has never worked since. I had no idea about her obligation to file anything. She&#x27;s been here for over a decade.<p>Like a lot of people we use a joint bank account. My salary, and anything else goes in there.<p>A couple of years ago I sold my flat in central London, and had 400K (600K USD) in there at various points. I have no idea how to bring my wife into compliance, as if I do, she will be expected to hand over 25% of the maximum balance of this account for every year it was undeclared to a maximum of 5 years. I.E. 125% of the maximum balance!<p>She remains unaware, and I don&#x27;t file for her. We&#x27;d risk losing our house (brought with the proceeds of the previous sale), if I attempt to fix this. I live in absolute dread of the IRS, and what they may do to our happy family.