How often do Inheritance Tax Laws change?
Generally speaking changes are announced in the Budget each year, but the Inland Revenue is constantly on the prowl to challenge avoidance techniques which it is less than happy with. Sometimes the Law is effectively changed by the Courts, so quite significant changes can occur at any time, so it is important to keep your planning under review (see www.WillCustodian.co.uk which provides an inexpensive storage and review reminder facility). Technically the Courts do not change the Law, they just refine its interpretation.