@Gasp0deTheW0nderD0g
It can get really complicated. It depends on what other gifts were also given in the seven years before death. Let me give you an example:-
Take your long-lost divorced uncle. He dies in 2020 but in the seven years previous to that he gave various gifts to his nephews/nieces:-
• 2013 A gets 100,000
• 2014 B gets 100,000
• 2015 C gets 100,000
• 2016 D gets 100,000
• 2017 E gets 100,000
Now, the first 325,000 is exempt so A, B and C don't have to pay any tax.
Since A, B and C have used up 300,000 between them, D only gets 25,000 tax free and has to pay tax on the remaining 75,000. But, because it is between 3 and 4 years ago they pay a reduced rate of 32%.
Poor old E, being the last to the party has to pay tax on their full 100,000 gift.
Hope that makes sense?
The recipient of a git is primarily responsible for paying the tax. Now, if D and E refuse to pay the tax (which they might do) then at the end of the day, it is the estate of the deceased that is responsible for paying the tax and would have to pay it.
However, while there is no statutory right for the executors to get the money from the recipient, following a 2015 tax case, it would be open for the executors of the will to sue the person that got the gift but refused to pay the tax.
The tax case in question was:-
Hutchings v Revenue & Customs (2015) UKFTT 9 (TC)
Mr Hutchings died in 2009 and his executors wrote to each member of the family asking if they had received any gifts from him in the previous 7 years. Only one daughter replied saying that she was not aware of anything.
The executors filed the inheritance tax account on that basis and arranged for the inheritance tax to be paid. Nearly two years later, HMRC received a tip-off that one of the sons had received a substantial cash gift from Mr Hutchings. HMRC wrote to the son demanding disclosure of the gift. It turned out that the gift was about £450,000. HMRC claimed an additional £47,000 of tax from the son personally, and, in addition, claimed a penalty from him of £87,000.
The son paid the tax but appealed against the penalty. Amongst other things he claimed that his father's executors had not made it clear to him that he should declare the gift and that they should, as a result, be liable to pay the tax themselves. The Court found against the son, saying that he had deliberately withheld information about the gift from his father's executors.
So, although there is no statutory right for an executor to claim the tax from the recipient, they just need to inform them of what HMRC are likely to do when they report that they have received a gift.
It can all get very nasty indeed.
(I have used a divorced uncle and nephews/nieces to keep it simple as different figures apply where there are spouses, children and property involved.)