Family help for a home purchase: gift and repayable loan are not the same equity
Document the family arrangement before relying on it in a mortgage application, and protect the parents’ own retirement liquidity.
The bank needs more than a family promise
Parents offer to help an adult child buy a home. The amount is clear, but the words gift, advance inheritance and loan are used interchangeably around the dinner table. They are not interchangeable in a financing file. Checked on 15 October 2026, this dossier focuses on documenting the arrangement before a mortgage commitment. It does not determine inheritance rights or cantonal gift tax. A transfer can improve cash available at purchase while leaving repayment obligations that weaken future affordability. Clarify what the family intends and what the lender will accept before signing a binding property transaction.
Identify repayment rights and funding conditions
For a loan, specify lender and borrower, amount, interest if any, repayment dates, termination rights and what happens on death or a sale. For a gift or advance inheritance, obtain legal advice about the intended treatment and other heirs where relevant. UBS's guidance distinguishes family loans from transfers without ordinary repayment obligations and stresses the parents' finances. Ask the mortgage lender how it classifies the arrangement and what evidence it requires. A loan being interest-free does not itself make it equity. If subordination is proposed, have its exact consequences explained to everyone rather than treating the word as a harmless formality.
A hypothetical purchase with two cash-flow results
Imagine a CHF 1 million purchase, CHF 120,000 of the buyer's own savings and CHF 80,000 from parents. With an unconditional gift accepted by the lender, those sources together provide CHF 200,000 before purchase costs and reserves. If the CHF 80,000 must instead be repaid over eight years, that adds CHF 10,000 a year, or about CHF 833 a month, before any interest. The bank must assess the complete financing rather than simply seeing CHF 200,000 arrive. These invented figures are not a lending offer, approval or statement that the buyer meets all equity and affordability requirements.
The parents need their own stress test
Ask what happens if care costs increase, one parent dies, investments fall or the child cannot repay on time. A family loan can preserve a repayment claim but does not guarantee liquidity precisely when needed. A gift simplifies the child's obligations but permanently reduces the resources available to the giver, subject to the legal arrangement. Build a separate retirement and emergency budget for the parents. Do not rely on the property being quickly sold at the original price. The FINMA mortgage dossier underlines why robust affordability and valuation matter; family generosity does not remove those risks from either household.
Align the documents before completion
Provide the lender with the signed arrangement, source-of-funds evidence and any professional advice required. Reserve money for transaction costs, maintenance and unforeseen work instead of allocating every franc to the down payment. Confirm tax reporting with the relevant cantonal authority; do not infer an exemption from a relative's experience elsewhere. Keep the family agreement consistent with bank declarations and estate documents. If terms change, inform the lender and record the change properly. The useful outcome is a transparent financing structure both generations can sustain, not a large apparent equity figure that hides an undocumented obligation to repay.
Sources and further reading
Original Clearwise analysis. External reporting provides context; rules and contract terms must be verified with the competent authority or provider. Some press articles may require a subscription.
Apply this to your situation
Compare your actual documents and clarify what matters before making a commitment.
Request a free consultationGeneral guidance, not a binding quote or personalised legal, tax or investment advice. Examples are hypothetical and results are not guaranteed.
