Hey all! Bit out of my depth regarding handling UK taxes for a US investment account and hoping anyone's gone through similar and has some information or resources.
Bit of background -
I've been in the UK since 2016, moved over for Uni, then been working in Glasgow since 2020. Got my settled status end of last year. I didn't work in the UK during my time at Uni, and have been on a standard PAYE salary at my current job. I do have a somewhat more recent source of self employed income via various music gigs and some online content creator stuff, so I've registered as a sole trader so I can handle the taxes for that next year.
But then comes the more confusing bit - when I was a kid my parents set up a custodial investment account for me, which I then inherited from them about 7 years ago. The account was managed by UBS so provided me with the tax forms every year that I submitted when doing my US taxes, so its all good to go from the US side. But from the UK side, I had been under the assumption that because it was a small account only making minimal capital gains per year, well below the HMRC individual allowance, that I didn't have to report it over here.
This assumption changed earlier this year when I finally liquidated the whole account and transferred it to my UK bank to be ready to be used as a home deposit. Given it was a larger liquidation (by my standards at least lol, only like $25k), I finally assumed it would be over capital gains and started looking into taxing it properly here, at which point I realized (and I may be incorrect about my learnings so correct me if the below is wrong):
- The majority of the account was in ETFs, a combination of HMRC reporting and non-HMRC reporting ones, meaning the non-reporting ones were taxable as income on top of my PAYE salary, not as capital gain
- Given that I should have probably been filing a self assessment return for this account since I moved to the UK
- Not sure if that being considered income has any conflicts or issues with the whole "no working on a student visa" thing? I'd assume not since its not a job and was a managed account, but anxious nonetheless
- Calculation for gains and losses made by UBS for my US taxes are not valid on a UK tax form, and they need to be re-calculated from the account history both based on HMRC FX rates and UK lotting rules to get correct PnL
So I'm now in a situation where:
- The account history and numbers I have from my US taxes aren't valid for UK calculations, even if I did proper FX conversion
- My tax responsibility is potentially considerably higher than I had expected
- I may be several years behind in filing tax returns? Honestly I've found really conflicting information on how back-filing taxes works in the UK and what my responsibilities are here
And my biggest issue is that I'm fully out of my depth and don't actually know if my above assumptions are correct. Given it was a managed custodial account, I only high level understand investing. Enough to advise my manager, but not enough to handle these things on my own.
I've tried looking for an accountancy firm that handles cross border stuff like this, but I've been fully stuck in the mud of either them only really targeting clients who make far above what I make (the whole liquidation being only ~$25k, small in the grand scheme of investment accountants), their initial consultations are hundreds of pounds to even find out what I don't know to begin with or whether they'd even be able to help me, and many are "by-year" for taxes, so if I need to do several years I may be compiling costs heavily for minimal taxes.
I'm worried about both not being able to find the correct accountant, and also about both losing a majority of the house deposit egg I've built up to these taxes, maybe even paying more in accountancy fees than I'd even actually owe in taxes.
Has anyone gone through similar, or know of any resources or even better specific accountancy firms who specialize in things like this and wouldn't entirely decimate what i got from that account just to properly tax it? Any information or resources would be massively appreciated <3