This isn't very complicated...
I am a US citizen, never lived abroad. Unmarried partner is Canadian citizen who has worked in the US for the last several years and is a UK citizen. We are moving together from the US to the UK.
We own property together in the US which will be let out; the depreciation combined with the mortgage and the taxes results in a net loss for us, which we can deduct against our other earned income (each of our salaries respectively). This makes a huge difference to us, as otherwise we would be significantly cash-flow negative each month on the rental property.
So here's the question: we both move to the UK. How is that loss treated? Do we lose the value of it since we have no other US income to offset it against? I hope that makes sense...
Say for example, we have a $2000 mortgage and $400 in RE taxes each month and $200 in other expenses, for a total expense of $2600 per month. We only rent it for $2000, resulting in a loss of $600/month or $7200/year. We can also take a depreciation of the improvement (house) at $12,000 per year, resulting in a net writeoff of $19,200 per year (or $1600/month). Currently, if we were in the 30% tax bracket in the US, we'd be able to realize a tax savings of $480 a month by adjusting our witholding appropriately. (Thus making our effective cash flow only negative by $120). But what happens to that loss when we move to the UK and have no other US income? Do we lose that?
-B