An Inheritance Act claim is filed under the Inheritance (PFD) Act 1975, commonly known as the 1975 Act. It allows a person who has not received adequate financial provision under a will (or the intestacy rules in the absence of a will) to make an Inheritance Act claim. To be eligible to bring such a claim, the person must belong to one of the categories specified in the Act. This may include a spouse, a cohabiting partner of at least two years, or someone financially supported by the deceased.