I am unsure what to do with US investment income. I will owe UK tax on the income for 2017/18, but haven't paid any tax yet.
Do I pay US tax on this as though it was US income and then do the re-sourced by treaty 1116's next year? Or do I fill them in this year with 0 tax? Or something else?
Also, I am assuming that tax does not count as "accrued" until the end of the UK tax year - is that correct?