There's also Farage's own arrangements when it comes to stamp duty.
While he described Angela Rayner's tax error as "screaming entitlement", his financial arrangements to avoid stamp duty are now under scrutiny.
Farage boasted last year that he bought a house in his Clacton constituency. Only it's not in his name. It's in the name of his girlfriend.
That way Farage has also avoided paying £40,000 in stamp duty, as he owns multiple properties already. His portfolio is worth about £3 million.