This is new to me. There was one for the one year 2011/12 with a 10% penalty I do remember. A more general amnesty might be good idea because it will discourage bad estate agents and those who work with them to cheat their clients as they know they are more likely to be found out in the future.
The deadline is past – it was something like end November 2012.
I think it covered all undeclared wealth that you could prove had a legitimate source. It was 10pc tax, but I’m told that turned out to be just on interest income, so the effective rate was much lower.