Once your estate is worth over £325,000, you have a potential exposure to tax at 40% on the excess above that figure.
This simple illustration gives an indication of how the rules currently operate:
David and Barbara are married and have two adult children. They were both born in Surrey and have lived there all their lives. David and Barbara own all their assets jointly, and the total value of these is £1,600,000.
Their house, owned as joint tenants, is worth £1,000,000. They have savings in joint bank accounts totalling £200,000 and they have investments in joint names worth £400,000.
David died in November 2015 and due to the survivorship rules, Barbara inherits his share of their joint assets. There is no Inheritance Tax payable because gifts to spouses are exempt.
Barbara died three years later in July 2018; the composition and value of the estate has not changed, and she is survived by both her children. The inheritance tax calculation for her estate is as follows:
Net Value of Estate
Less Barbara’s nil-rate band: £1,600,000 (£325,000)
Less transferable nil-rate band from David’s estate (none of his nil-rate band was used on his death) (£325,000)
Less Residence Nil-Rate Band (an interest in Barbara’s home has been left to a child) (£125,000)
Less transferable Residence Nil-Rate Band from David’s estate (David died before 6 April 2017 so his Residence Nil-Rate band was not used on his death) (£125,000)
Amount subject to Inheritance Tax: £700,000
Inheritance Tax at 40% on £700,000: £280,000