Our wills are drawn up stating the surviving spouse inherits the house. The solicitor also added a clause stating it was to be tax free, even though ownership is Tenants in Common. The wills were made several decades ago. I'm not sure how a modern HMRC would view this, and in my case, if 1/2 the value of the house were added to other assets in my name only (bank accounts), tax would be due.
Of course, there are now new UK inheritance tax rules for the tax free threshold, but does that only apply if there are children? If so, does that mean for childless couples it remains at £325,000?
I believe there is also a specific treaty between the UK and US regards inheritance, aside from the normal tax treaty. How does that work?
The "married to an NRA" also is a question. Normal US estate tax free is $5+ million, but for an NRA, it reduces to $65,000 (?) plus a gift allowance of $120,000+ (?). Is that only on US situ assets, or does that apply to worldwide assets? Does that apply only if the NRA spouse is resident in the US, or anywhere in the world? And does the treaty come into play here? Those married to another USC don't have these immediate problems.
It's not something younger owners think to much about (but maybe they should), but as we get older, it definitely becomes worthy of attention. Yearly gifting to the NRA spouse becomes interesting.
Sadly, there are very few reliable references to be found anywhere, and those that are found usually relate to estates of 10+ millions. There is really no simple "go to" for information on this issue for answers.