Everything You Need to Know About Family Loan Agreements

A family loan agreement is a formal document that sets out the terms when a family member provides funds for your property purchase.

Most lenders treat family contributions as either a genuine gift or a loan, and the distinction determines how they assess your borrowing capacity. If your parents are lending you $50,000 for a deposit and expect repayment, that needs to be documented correctly or the lender will either decline the application or reduce what you can borrow. The agreement itself protects both parties and satisfies the lender's requirement to understand your full financial position.

Why Lenders Require Written Agreements for Family Loans

Lenders need to know whether family contributions increase your debt obligations. An undocumented loan can be treated as an unknown liability, which means the lender either assumes a monthly repayment amount that reduces your borrowing capacity or declines the application outright. A properly drafted family loan agreement confirms the repayment terms, whether interest applies, and when the loan must be repaid.

Consider a scenario where a professional couple is purchasing their first property with a $40,000 contribution from parents. Without a written agreement, one lender might assume a monthly repayment of $500, reducing what the couple can borrow by around $100,000. Another lender might reject the application entirely until the source and terms are clarified. With a signed agreement showing interest-free repayments of $200 per month over fifteen years, the lender can factor that obligation into serviceability calculations accurately.

What a Compliant Family Loan Agreement Must Include

The agreement should state the loan amount, repayment schedule, interest rate if applicable, and what happens if circumstances change. It must be signed by both parties and ideally witnessed or prepared by a solicitor. Lenders want to see that the arrangement is genuine and that both parties understand the obligation.

In our experience, agreements drafted informally often omit key details like what happens if the property is sold before the loan is repaid, or whether the loan is secured against the property. These gaps create problems during the home loan application process when the lender's credit team requests clarification. Including a clause that specifies whether the loan is subordinate to the mortgage, and whether early repayment is allowed without penalty, removes ambiguity and speeds up approval.

Family Loan vs Gift: How Lenders Treat Each Option

A gift does not require repayment and does not affect your borrowing capacity beyond the deposit it provides. A loan must be repaid and will reduce how much you can borrow because the lender includes it as an ongoing commitment. The key difference is whether the family member expects the money back.

If the contribution is genuinely a gift, the lender will ask for a signed statutory declaration from the family member confirming there is no expectation of repayment. If it is a loan, even an informal one, the lender needs a written agreement. Attempting to classify a loan as a gift to improve serviceability will usually be identified during the assessment process when the lender requests bank statements or interviews the applicant. Misrepresenting the arrangement can result in the application being declined and the lender noting the file, which affects future applications.

Structuring Repayments to Preserve Borrowing Capacity

The repayment terms directly influence how much the lender will let you borrow. A family loan with no fixed repayment schedule will typically be assessed at a higher monthly commitment than one with defined, affordable repayments over a long term. Structuring the loan with lower monthly payments over a longer period reduces the impact on serviceability.

As an example, a $60,000 family loan repaid at $1,000 per month reduces borrowing capacity by approximately $200,000, depending on the lender's serviceability buffer. The same loan repaid at $300 per month over sixteen years reduces capacity by around $60,000. For a professional purchasing in a market where every dollar of borrowing matters, that difference can determine whether the property is within reach. The family loan agreement should reflect a repayment structure that supports your borrowing capacity while remaining realistic for both parties.

Interest Rates and Tax Implications for Family Loans

Family loans can be interest-free, charge a nominal rate, or apply a market rate depending on what the parties agree. From a lender's perspective, the interest rate only matters to the extent it affects your repayment commitment. From a tax perspective, charging interest may have implications for the family member providing the loan, particularly if the funds are drawn from a trust or investment account.

If the property being purchased is an investment property, and the family loan charges interest, that interest may be tax deductible in the same way mortgage interest is deductible. The loan agreement should specify the interest rate and how it is calculated to ensure clarity for both the lender and the Australian Taxation Office. If no interest is charged, the agreement should state that explicitly.

Security and Subordination: Protecting the Mortgage Lender's Position

Most lenders require that any family loan remain unsecured or be formally subordinated to the mortgage. Subordination means the family member agrees their loan ranks behind the lender's mortgage if the property is sold and there are insufficient proceeds to repay both debts. Without this clause, some lenders will not approve the application.

The family loan agreement should include a subordination clause if the loan exceeds a nominal amount or if the lender requests it. This does not disadvantage the family member in most scenarios because the mortgage will almost always be repaid in full from sale proceeds, but it provides the lender with confidence that their security is not compromised. If the family member wants their loan secured by a second mortgage, that requires separate legal documentation and will be assessed differently by the mortgage lender.

When Family Loans Affect Offset Accounts and Loan Features

If your home loan includes an offset account, funds held in that account reduce the interest charged on your mortgage. Some borrowers use offset accounts to accumulate savings for family loan repayments, which can be effective if the offset is linked to an owner-occupied variable rate loan. The interest saved on the mortgage often exceeds any interest charged on the family loan, particularly if the family loan is interest-free.

Lenders do not restrict how you use your offset account, but they do assess whether your income supports both your mortgage repayment and your family loan commitment. Relying on offset savings to meet family loan obligations without addressing serviceability will not resolve a shortfall in the lender's assessment. The loan agreement and your financial position need to demonstrate that both debts are sustainable from your regular income.

Updating or Refinancing with an Existing Family Loan Agreement

If you refinance your mortgage or apply for additional borrowing, the existing family loan will be reassessed by the new lender. They will request a copy of the agreement and calculate the remaining balance and repayment term. If the original agreement was informal or poorly documented, this can delay or prevent approval.

When considering refinancing, confirm that the family loan agreement is current and reflects any changes to the repayment terms. If the family loan has been partially repaid or the terms have been extended, update the agreement in writing and have both parties sign the variation. This avoids confusion during the credit assessment and ensures the lender bases their decision on accurate information.

Call one of our team or book an appointment at a time that works for you to discuss how a family loan agreement fits with your property and finance plans.

Frequently Asked Questions