The “Bank of Mum and Dad” remains one of the UK’s largest sources of property finance.
With high property prices and strict mortgage criteria, parental gifts and loans are often essential to help children onto the property ladder. In fact, the bank of mum and dad has become increasingly relevant in modern property transactions. Yet many families overlook a crucial question: what happens to the money if the relationship breaks down?
In England and Wales, the legal position can differ significantly depending on whether a couple is married or cohabiting. It also depends on whether there is a cohabitation agreement, nuptial agreement or other protective documentation in place.
This article outlines how families can protect parental contributions, and what can happen if no formal agreement exists. Notably, issues with protecting funds from the bank of mum and dad often arise if no agreement is in place.
The myth of the “Common Law Marriage”
It remains one of the most persistent misconceptions in family law: there is no such thing as a common law spouse in England and Wales. Unmarried couples who live together do not acquire the same legal rights as married couples, regardless of how long they have been together.
If a cohabiting couple separates, disputes over property are determined primarily by:
- Legal ownership (whose name is on the title deeds)
- Trust law principles under the Trusts of Land and Appointment of Trustees Act 1996 (TOLATA)
- In some cases, financial provision for children under Schedule 1 of the Children Act 1989.
This framework can produce outcomes very different from those many families expect.
How cohabitation agreements can help
A cohabitation agreement is a formal contract between unmarried partners that can set out:
- How the property is owned (for example, unequal shares reflecting a parental deposit)
- What happens if the property is sold
- How mortgage payments and outgoings are treated
- Whether parental contributions are gifts or loans.
While not automatically binding in the same way as a court order, a properly drafted cohabitation agreement is highly persuasive. This is particularly the case where both parties receive independent legal advice and full financial disclosure. It provides clarity and significantly reduces the risk of costly litigation. In situations involving the bank of mum and dad, legal clarity is especially important to preserve family harmony.
Often, a declaration of trust (or deed of trust) and a cohabitation agreement can work together to ensure all aspects of ownership and financial contributions are properly considered.
What about marriage?
The position is very different if the couple are married. On divorce, the court has broad discretion under the Matrimonial Causes Act 1973 to redistribute assets to achieve fairness. The starting point in many cases is equality, particularly after long marriages.
Importantly:
- Assets owned before marriage can be shared.
- Inherited or gifted funds may be treated as non-matrimonial but can still be drawn upon if needed to meet housing or financial needs.
- The family home is often treated as central, even if funded by one side.
Without a nuptial agreement, parental deposits are not automatically ring-fenced.
Prenuptial and postnuptial agreements
For couples who are marrying (or already married), a prenuptial or postnuptial agreement can offer additional protection. Although not strictly binding in England and Wales, the Supreme Court decision in Radmacher v Granatino (2010) established that courts should give effect to nuptial agreements where:
- Both parties entered into the agreement freely
- There was full financial disclosure
- Each party received independent legal advice
- The agreement is fair and does not prejudice children.
A nuptial agreement can:
- Ring-fence parental deposits
- Define certain assets as non-matrimonial
- Protect inherited wealth
- Clarify expectations in second marriages or blended families.
Without such an agreement, a gifted deposit may form part of the matrimonial pot and be shared on divorce.
If there is no agreement
If no cohabitation agreement, declaration of trust, loan agreement or nuptial agreement exists:
- Outcomes become uncertain and fact dependent.
- Litigation risk increases.
- Legal costs can be substantial.
- Family relationships may suffer long-term damage.
- Parents may have limited recourse to recover contributions.
In divorce proceedings, the court’s wide discretion means there are few guarantees. In cohabitation disputes, technical trust law principles apply. This can sometimes lead to outcomes that feel arbitrary or unfair.
Practical steps for advisers and families
For independent financial advisers working with families, early signposting is key. Similarly, advisers should always address bank of mum and dad arrangements when guiding clients.
Our advisers work holistically across all teams to properly consider how to protect financial support provided by parents. Importantly, these discussions are best had before money changes hands or before a wedding, rather than during relationship breakdown.
Giving you the full picture
Parental financial support is often given with generosity and optimism. But in the absence of proper legal protection, significant sums can become vulnerable if relationships end. Cohabitation agreements, declarations of trust and nuptial agreements are not about anticipating failure, they are about providing clarity, reducing conflict and safeguarding family wealth.
For families investing in the next generation’s future, a modest investment in legal planning can prevent substantial financial and emotional cost later.
If you are helping a child onto the property ladder, or receiving financial support from family, it is worth considering how that contribution should be protected. Our family law team advises on cohabitation agreements, declarations of trust and nuptial agreements, helping families put clear arrangements in place from the outset.
As a result, careful management of bank of mum and dad gifts or loans can help secure family assets for future generations. If you would like to discuss your situation, our team are here to help.
