ALL IMHO
@Virginia Slim
Thank you for your detailed explanation of your situation. I’m sorry you’ve found yourself in this predicament, but as you are likely aware, you’re certainly not alone.
Could you supply some additional information, please. It appears you are a naturalised UK citizen, occurring around 1972. Is this true, and are you not a dual US/UK citizen at birth (born in the US to a British parent)? It does make a difference.
If born dual, then the exit tax will not come into play. If naturalised, then you have already relinquished US citizenship. In 1972, the US did not allow dual citizenship, and if you became a naturalised UK citizen, you automatically gave up your US citizenship. UNFORTUNATELY, in the mid 1980’s, a US Supreme Court ruling overrode that situation, and gave you back US citizenship, whether you wanted it or not. The intent of your actions in ~1972 still apply, and if you chose to relinquish, you should insist it be based on that past action. The US passport acquisition of 2002 is a complication, but generally, if it was prompted by a US Immigration Agent when entering the US, it
may be overlooked.
As for destroying the forms from the UK financial institution, you’ve possibly deemed yourself to be recalcitrant (under the Intergovernmental Agreement). That means all information pertaining to that account will be forwarded to HMRC, and then be forwarded to the IRS, which brings about the question of a Social Security number, and gives rise to an interesting situation. Give it some thought. Has the FI threatened to close the account if there is no response to the forms?
Whichever way you decide to approach this, the cost will still be, at minimum, $2,350 (£1,600).
There is no quick fix to this situation, and each individual situation is different. The easiest, but possibly most costly depending on your aptitude to tackle US tax forms and your current UK financial situation (S&S ISA’s? OIC’s?, mutual funds?, [PFIC’s] etc.), is to renounce, but if you naturalised in 1972, the tax situation may be null and void. It all depends on your understanding (and stance) on a US Code Section, 877 and 877A.
For discussions on this more abstract and confusing complication (877A), you may find this site of interest:
http://www.citizenshipsolutions.ca/If you do decide to renounce, there are two other thoughts.
1) Nationality (and relinquishing/renouncing) and US tax obligations are two separate independent issues. It’s only if you decide to exit cleanly and legally do the two become intertwined. If you consider yourself a US citizen, then you currently have two differing citizenships, one under nationality law, and one under US tax law (877).
2) Obtaining a Social Security number may require some effort, and it’s needed to file US tax forms. Guya may have some thoughts on this, but it’s rumoured you have a 50/50 chance of being successful if you complete the forms on your own.
If you do decide to renounce, check the
exit tax. You may not be subject to this, but with your pension (worth ~$700,000 as a non-deferrable asset) and your savings (worth~$200,000 as an asset), you're almost halfway there. Homeownership, the type of ownership, and location (SE England?) could bring you very close to being a covered expatriate.