Discretionary Will Trusts.
A Discretionary Trust Will is a way in which married couples can minimise or even eliminate the IHT liability simply by making and implementing a pair of correctly worded Wills - known as Discretionary Trust Wills and sometimes referred to as Nil-Rate Band Discretionary Trust Wills.
Discretionary Trust Wills work by making use of the Nil-Rate band (£312,000) of both spouses, rather than just that of the surviving spouse (as would normally be the case).
You can download a comprehensive “Guide to Discretionary Trust Wills” or Make a Discretionary Trust Will here