When someone passes away, the question of who inherits what can quickly become complicated, especially when grieving loved ones include spouses, ex-partners, stepchildren, or people who relied financially on the deceased.
As family structures continue to evolve and change, for example the increase in ‘blended families’ - the law has also had to adapt to reflect that reality. As a result, your own relationship to the deceased has now become the most influential factor as to whether you can inherit automatically, how strong your claim is, and how likely an inheritance dispute is to arise.
Spouses and Civil Partners
A legally married spouse or civil partner typically always starts from the strongest legal position. If there is no valid will, most intestacy rules place them at the top of the list, often receiving the bulk of the estate. Therefore, even when a spouse is excluded from a will, they usually have a strong case for claiming ‘financial provision’ under the Inheritance (Provision for Family and Dependents) Act 1975. Especially if they shared a long marriage, owned property together, or maintained a particular lifestyle.
Disputes tend to arise when the marriage was complex such as second marriages, estranged spouses, or unclear financial arrangements. But legally, spouses remain the most protected group when it comes to inheritance disputes.
Cohabitees
Long-term partners who live together but aren’t married or in a civil partnership occupy a more uncertain position. Cohabitees do not automatically inherit under intestacy rules. However, they can still make a claim if they lived with the deceased for a qualifying period (two years) or if they were financially dependent.
The biggest source of disputes is simply proving the nature of the relationship. It is common for families to dispute whether the cohabitee was a ‘partner” or just a ‘housemate’, or argue over the extent of shared finances. It’s one of the areas where making a will is most crucial.
Children and Adult Children
Children, including adopted children, typically have very clear inheritance rights in circumstances where there is no will. Where there is a will, they may also challenge it, but only if they were financially dependent on the Deceased or if they feel the Will is invalid.
Stepchildren
Stepchildren face an uncertain legal position because, unlike biological children, they do not automatically inherit unless formally adopted. However, they may still bring a claim if the deceased supported them financially or played a parental role.
Disputes commonly involve stepchildren competing with biological children, especially in long-term relationships where formal adoption never took place.
Financial Dependents
This category can include partners, relatives, friends, or even non-family members who relied on the deceased for housing, bills, or day-to-day support. Courts often look closely at actual financial behaviour rather than labels or titles.
When disputes arise, they usually centre around the extent of the dependency and whether it qualifies as ‘maintenance’ under the law.
Parents, Siblings, and Extended Family
Parents may inherit if the deceased had no spouse or children, but siblings, cousins, and other relatives usually come into play only when the immediate family is absent. Their ability to challenge a will is limited unless dependency or procedural issues can be shown.
Conclusion
In inheritance disputes, blood isn’t the only thing that matters, the nature and strength of the relationship often carry more weight. As family structures grow more complex, understanding how the law treats different relationships can help you make informed decisions, minimise conflict, and ensure loved ones are protected.
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