Aug 13, 2026 · 17 min · 9 segments
A brown envelope from HMRC. A letter saying they have information about offshore income or gains you may not have disclosed. No detail about what that information is. If that has happened to you, or…
Simon RoueHost
Laura SantHost
So the ones we tend to see most regularly at the moment is to do with offshore income because of the type of firm that we are.

If they have reason to believe that you have received certain sources of income or gains that you haven't disclosed to them through your tax return, obviously if it's offshore income, they won't automatically be told about it.


So recently we get these simple assessments that come through where they say, oh, HSBC have told client A that they've got 5,000 quid of interest and they just do a recalculation to try and keep people outside of the self-assessment scheme.

But there's something similar in terms of foreign income where there's reporting between OECD countries.



But generally speaking, it's communications between governments that then give rise to an auto letter coming out saying, oh, have you got anything?

Maybe you'll say, well, yes, I've got this income, but I've paid tax in that other country.

So we have misunderstandings where people have thought because there's a double tax treaty, I've paid tax in one country because I shouldn't be double taxed.

The whole thing with the double tax treaty is it's supposed to prevent double taxation where at all possible.

So the ones we tend to see most regularly at the moment is to do with offshore income because of the type of firm that we are.

If they have reason to believe that you have received certain sources of income or gains that you haven't disclosed to them through your tax return, obviously if it's offshore income, they won't automatically be told about it.


So recently we get these simple assessments that come through where they say, oh, HSBC have told client A that they've got 5,000 quid of interest and they just do a recalculation to try and keep people outside of the self-assessment scheme.

But there's something similar in terms of foreign income where there's reporting between OECD countries.



But generally speaking, it's communications between governments that then give rise to an auto letter coming out saying, oh, have you got anything?

Maybe you'll say, well, yes, I've got this income, but I've paid tax in that other country.

So we have misunderstandings where people have thought because there's a double tax treaty, I've paid tax in one country because I shouldn't be double taxed.

The whole thing with the double tax treaty is it's supposed to prevent double taxation where at all possible.
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