Whether it’s through second marriages, civil partnerships formed later in life, or long-term cohabiting relationships, bringing together children from previous relationships creates shared lives and emotional bonds that feel no different to traditional parent-child relationships. Scots law is clear on its distinction between biological children and stepchildren, and understanding the legal position is essential for any blended family that wants to ensure their loved ones are properly and fairly provided for.

Can stepchildren inherit if there is no will?

Under Scots law, only biological and legally adopted children possess automatic legal rights to a share of their parents’ moveable estate. Stepchildren have no such entitlement, no matter how close the relationship or how long they've been part of the family. If you wish to leave your stepchildren provisions after your death, you must specify this in a properly drafted will. If you die without a will, intestacy rules will leave your stepchild empty-handed.

If you have legally adopted your stepchild, they will be treated the same as a biological child for all legal purposes, including inheritance. However, this route to adoption is relatively uncommon, particularly where the child's other biological parent is still alive and involved in their life.

Family Law (Scotland) Act 2006

Providing a potential avenue for stepchildren in genuine cases of need, the Family Law (Scotland) Act 2006 allows individuals who were financially dependent on the deceased but not left provisions in the will to apply for financial provision from the estate. A stepchild who can demonstrate ongoing financial need may be able to make a claim, but these applications are rare, and success is far from guaranteed.

Making a will when stepchildren are involved

In order to inherit, stepchildren must be explicitly named in a properly drafted will. Every scenario is different, and those with complicated family structures should always seek legal support.

Be clear about your intentions 

Stating "I leave my estate in equal shares to my children" could be interpreted to exclude your stepchildren. Avoid general language, and name your children to make it clear who you’re including: “I leave my estate in equal shares to my children [list names of all biological children and stepchildren]".

Inheritance tax

Residence Nil Rate Band (RNRB) is an additional inheritance tax allowance in the UK that applies when you leave your main residence to direct descendants, raising the standard allowance of £325,000 by an extra £175,000 (£500,000 total). Stepchildren are seen as ‘direct descendants’ for inheritance tax purposes, meaning that including them in your will won’t create any inheritance tax disadvantage compared to biological children.

Unequal treatment and balancing competing interests

Blended families come in all shapes and sizes, and each immediate family member you wish to provide for may have different needs and expectations:

• Your biological children may expect to inherit family heirlooms or property that’s been in your side of the family for generations
• Your stepchildren may be financially dependent on you, especially if their relationship with their other biological parent is difficult or non-existent
• Your current spouse or partner may need financial assistance for the remainder of their lifetime

You’re allowed to distribute your estate however you wish, and there are plenty of reasons you may choose to leave uneven amounts to each of your children. However, your spouse and biological children have a legal right to claim their entitlement from moveable property, no matter what your will sets out. These legal rights exist regardless of what your will says, and cannot be completely overridden. 

It can be helpful to include a letter of wishes alongside your will with in-depth explanations for your reasoning. This letter is not legally binding, but it can help executors and other family members understand your decisions and reduce the likelihood of disputes.

Can stepchildren contest a will?

In Scotland, anyone can try to contest a will, including stepchildren, but the grounds for challenge are limited. There must be sufficient evidence that, at the time of making the will, the deceased lacked capacity or was under undue influence, force, or fear. Wills that do not meet legal requirements may also be contested.

Unlike biological children, stepchildren have no right to challenge a will simply due to being excluded or receiving less than they believe they deserve.

Don’t leave inheritance to chance

Wills involving blended families require balancing emotional relationships, legal rights, financial needs, and competing expectations. Attempting to draft such a will yourself is risky, and the consequences of getting it wrong can be severe.

A solicitor experienced in Scottish succession law can help you navigate these complexities, helping achieve the outcome you desire, or as close to it as legally possible.