By The Chipkie Team, Personal Finance Editorial Team · Last updated 14 August 2026
Handing money to an adult child or a sibling is rarely as simple as pressing “send”. Most lenders in a family setting care less about the interest rate than about where the money actually goes — which is why family loan spending conditions have become one of the most common features of the agreements we see. A £15,000 loan intended for a kitchen extension that quietly becomes a car and a holiday is how relationships fracture.
The good news: you can put a purpose on the money, and in the UK you can make that purpose legally binding. The risk is doing it badly, or worse, doing it in a way that misleads a mortgage lender.
Key Takeaways
- A loan purpose clause states what the money may be spent on and lets you demand immediate repayment if it is spent elsewhere — but it only works if it is written down.
- Use a deed rather than a simple contract: obligations in a deed carry a 12-year limitation period under the Limitation Act 1980, against six years for an ordinary contract.
- If the money is destined for a property deposit, the lender must be told it is a loan. Signing a gifted deposit letter for money that is really a loan is fraud, not paperwork tidying.
- According to HMRC, the inheritance tax nil-rate band is £325,000 and remains frozen, so whether a transfer is a loan or a gift materially changes your estate position.
- Conditions work best when they are specific, evidenced (invoices, direct payment to a supplier) and agreed before the money moves.
What is a loan purpose clause, and what can it actually restrict?
A loan purpose clause is a written term stating the specific use the borrower may put the money to, and what happens if they deviate. In practice it converts a vague family understanding into an enforceable obligation, usually paired with an acceleration right allowing the lender to demand the full outstanding balance immediately if the money is misapplied.
Conditions that work well in family agreements include:
- Single-purpose wording: “solely towards the purchase of the freehold property at [address]” rather than “to help with housing”.
- Payment routing: funds paid directly to the solicitor, builder, university or care provider instead of into the borrower’s current account.
- Evidence obligations: the borrower supplies invoices or completion statements within a set number of days.
- Negative covenants: the money must not be used to repay other debts, lent onward, or placed in a joint account with a partner.
- Acceleration and default interest: the consequence of breach, spelled out in pounds and days.
Our experience across the agreements Chipkie users create is consistent: the clause almost never gets litigated. Its value is that it forces the awkward conversation before the transfer, not after. Where families skip it, we routinely see disputes about whether money was ever a loan at all — a problem explored in more depth in our guide to proving a verbal family loan in court.
Are family loan spending conditions enforceable in the UK?
Yes. A private loan between family members is a contract, and conditions on use are enforceable like any other term, provided there is evidence of what was agreed. Enforcement is a civil matter — usually a County Court claim for the outstanding sum. Executing the agreement as a deed extends your enforcement window from six years to twelve.
Three practical points most articles miss:
- Family lending is generally unregulated. Occasional private lending does not normally require FCA authorisation, but if you lend repeatedly at interest as a business you may stray into regulated territory. If in doubt, check the Financial Conduct Authority perimeter guidance.
- Presumption of advancement. Money from a parent to a child is more readily assumed by a court to be a gift. A written agreement with a stated purpose and repayment schedule rebuts that assumption.
- Tax follows substance. HMRC looks at reality, not labels. Interest you receive is taxable income; a “loan” never intended to be repaid may be treated as a gift within your estate. See our explainer on the gift versus loan tax trap and what HMRC says about family money transfers, and the guidance at HMRC personal tax.
If you do decide the money is a gift instead, GOV.UK confirms the annual gift exemption is £3,000 per tax year, with one unused prior year available to carry forward, plus small gifts of £250 per recipient where no other exemption is used for that person. Larger gifts are potentially exempt transfers under the seven-year rule; taper relief between three and seven years reduces the tax payable, not the value of the gift itself — a distinction families get wrong constantly.
What happens if the money is going towards a mortgage deposit?
This is where spending conditions collide with mortgage law. If your money forms part of a deposit, the lender must be told whether it is a gift or a loan. A borrowed deposit is a different credit risk entirely, and many UK lenders will refuse a deposit funded by a family loan outright, regardless of affordability.
What lenders typically require and assess:
- Source of funds: evidence of where the money came from, under anti-money-laundering rules. Conveyancers will ask for bank statements and an explanation of large credits.
- A gifted deposit letter: confirming the money is a genuine gift and that the giver retains no interest in the property and no right to repayment.
- Affordability: if a loan-funded deposit is accepted at all, the monthly repayments to you count as a commitment in the stress test, reducing how much the borrower can borrow.
Disclaimer: The information provided in this article is for informational purposes only and should not be considered financial or legal advice. Property and lending laws in the United Kingdom vary and may change over time. We always recommend consulting with a qualified solicitor and mortgage broker before entering into a property purchase or financial arrangement with another party.
