Lent, Not Given: Keeping the Bank of Mum and Dad Out of the Courtroom

The Bank of Mum and Dad ranks among the UK's largest lenders. Parents and grandparents contribute billions of pounds towards deposits, weddings, university costs and business ventures every year, yet the overwhelming majority of these transactions are arranged over the kitchen table with nothing in writing. Most of the time, that works. When it does not — a marriage collapses, a sibling falls out, a parent dies — the absence of paperwork transforms a family arrangement into a contested legal claim.

This article examines the legal distinction between a gift and a loan, the evidence courts actually consider, and the modest documentation that prevents years of costly litigation.

Gift or Loan: The Legal Distinction

The starting point in English law is simple: money given away without conditions belongs to the recipient. Once a gift is complete, the donor cannot demand it back, however much they later regret the generosity. A loan, by contrast, creates a debt enforceable through the courts — but only if the lender can prove the money was never intended as an unconditional gift.

Courts look for evidence of an intention to repay. A bank transfer alone proves almost nothing; the description field reading 'deposit' or 'with love' is neutral at best. What matters is the surrounding conduct: was a repayment schedule discussed, was interest mentioned, was the money deducted from savings in a way consistent with a gift or with lending? In disputes between divorcing spouses and their in-laws, courts routinely hear the same money characterised by one side as a loan and by the other as a gift, and the outcome often turns on contemporaneous messages, emails and diary notes made years earlier.

Joint Ownership: The Hidden Trap

Many parents contribute to a property held in the child's name, or worse, are added to the title deeds with no formal declaration of trust. Both scenarios create avoidable problems.

Where parents contribute to a property held solely in a child's name, the contribution may be claimed as a beneficial interest under principles of resulting or constructive trust — but proving this requires evidence of a common intention that the parent should hold a share. Where parents are registered as joint owners without a declaration, the law presumes a joint tenancy, meaning the property may pass automatically to the surviving owner on death rather than forming part of the parent's estate.

A properly drafted declaration of trust, recording exactly what each party contributed and what share they are entitled to, resolves these ambiguities before they arise.

When Divorce Enters the Picture

If a child who received family money later divorces, that money becomes a battleground. A genuine loan is a liability that can be taken into account in financial remedy proceedings; a gift from a parent may be treated as part of the couple's resources and shared accordingly. Family loan agreements — ideally with the spouse's acknowledgment — dramatically improve the lender's position. Courts are more willing to respect parental loans where the documentation predates or accompanies the marriage, or where a postnuptial agreement records the arrangement.

The Probate Problem

Undocumented family lending resurfaces after death. Executors must administer the estate according to its true liabilities, and siblings frequently disagree about whether money advanced to one of them was a loan to be repaid into the estate or an early distribution of their inheritance. A written loan agreement, however informal, gives executors clarity and prevents estate administration stalling for years.

The Simple Fix

A family loan agreement need not be intimidating. At its core it should record:

• The parties and the amount advanced
• Whether interest applies and at what rate
• A repayment schedule or trigger events (sale of the property, repayment of the mortgage)
• What happens on death, divorce or insolvency
• Whether the loan is secured, for example by a second charge on the property

For substantial sums, particularly those secured against property, a solicitor-drafted agreement and land registry charge are strongly advisable. The cost is trivial compared to the litigation it prevents.

Practical Guidance

Family generosity is admirable, and most arrangements never see a courtroom. But goodwill is not a legal instrument. If you are lending a significant sum, put the terms in writing, even among close relatives — indeed, especially among close relatives. If you are receiving family money, understand how it will be treated if your relationship ends. And if a dispute has already arisen, take advice promptly: limitation periods, evidence preservation and negotiation windows all reward early action.

Bentley Law advises families on structuring intergenerational lending, drafting declarations of trust and loan agreements, and resolving disputes where informal arrangements have gone wrong. An early consultation is frequently the difference between a documented arrangement and an expensive argument.