Common Mistakes in SMSF Loan Refinance Serviceability

Serviceability assessment for an SMSF loan refinance is calculated on the fund's rental income and existing super balances, not your personal income.

Most refinancing applications fail because trustees assume the lender will assess their SMSF the same way a residential owner-occupier loan is assessed. The fund is treated as a standalone entity. Your salary, your spouse's income, and your household expenses are irrelevant. The lender wants to know whether the property generates enough rent to service the loan and whether the fund holds sufficient liquid assets to cover holding costs if the tenant vacates.

How Lenders Calculate SMSF Refinance Serviceability

Lenders apply a shading rate to the rental income and stress-test the loan at a higher interest rate than the actual rate offered. Rental income is typically shaded by 20 percent, meaning a property generating $30,000 in annual rent is assessed at $24,000. The loan is then stressed at a floor rate, often between 7 and 8 percent depending on the lender, regardless of whether the actual rate is lower. The fund must demonstrate it can meet repayments at that stressed rate using only the shaded rental income.

Consider a fund refinancing a commercial property in Osborne Park generating $48,000 annual rent. After 20 percent shading, the lender assesses serviceability at $38,400. If the proposed loan is $600,000 and the lender applies an 8 percent stress rate, annual repayments would be approximately $48,000 on a principal and interest basis. The shaded rental income falls short, so the lender will ask for evidence of liquid reserves within the fund to cover the shortfall. A fund holding $150,000 in cash or listed securities may still be approved because the lender can see the capacity to manage repayments during a vacancy period or rate increase.

Liquid Reserves and Buffer Requirements

Most SMSF lenders require the fund to hold liquid reserves equal to six to twelve months of loan repayments. These reserves must be held within the fund and cannot include personal savings or assets outside the SMSF structure. Acceptable reserves include cash, term deposits, and in some cases listed shares or managed funds that can be liquidated without triggering a breach of the single acquirable asset rule. If the fund's only asset is the property being refinanced, serviceability becomes much harder to demonstrate.

In a scenario where a fund is refinancing an SMSF loan for a residential property in Scarborough, the lender will look at the fund's cash balance at the most recent member statement. If the property is tenanted at $550 per week and the fund holds $80,000 in a transaction account, the lender can offset a shortfall in shaded rental income with the reserve buffer. If the fund holds no reserves and the rental income barely covers the stressed repayments, the application will be declined even if the property has significant equity.

The Role of Fund Contributions and Rental Reviews

Lenders cannot include future employer or member contributions in the serviceability calculation. Contributions are not guaranteed income and cannot be relied upon to service a loan. Some lenders will accept evidence of a rental review or a lease renewal at a higher rate, provided the new lease is executed and the increase is reflected in the rental income at the time of application. A lease showing rent increasing from $2,000 to $2,200 per month in three months will not be accepted unless the application is lodged after the increase takes effect.

Interest Rate Type and Serviceability Impact

Fixed rate loans are assessed at the fixed rate if it exceeds the lender's floor rate, otherwise at the floor rate. Variable rate loans are always assessed at the floor rate. If a fund is refinancing from a fixed rate that is expiring, the new variable rate may result in a lower actual repayment but a higher stressed repayment for serviceability purposes. This can create a scenario where the fund comfortably meets current repayments but fails the refinance assessment because the floor rate applied is higher than the expiring fixed rate.

A fund holding a commercial property loan with a fixed rate of 6.5 percent expiring will face assessment at the new lender's floor rate, potentially 8 percent. If the rental income was marginal under the old rate, the refinance may not proceed unless the fund can demonstrate increased rent or additional reserves. Lenders do not offer latitude on the floor rate, even when the trustee can show a history of meeting repayments without issue.

Arm's Length Terms and PCG 2016/5 Compliance

Any refinanced loan must meet the arm's length terms outlined in Practical Compliance Guideline PCG 2016/5. The interest rate must fall within the ATO's published safe harbour rates for the relevant financial year, and the loan-to-value ratio must not exceed 80 percent for residential or commercial property. If the refinance involves a related party lender, the terms must be identical to those a commercial lender would offer an unrelated borrower. Non-compliance can result in rental income being taxed as non-arm's length income at 45 percent.

If a fund refinances a residential SMSF loan at a rate below the safe harbour floor, the ATO may treat the shortfall as a benefit conferred on the fund and assess the rental income accordingly. The lender's serviceability assessment is separate from the ATO's compliance review, but both must be satisfied for the refinance to proceed without tax consequences.

Limited Recourse and Personal Guarantees

The refinanced loan must maintain the limited recourse structure of the original arrangement. The lender's recourse in the event of default is limited to the asset being acquired, and no other fund assets can be used to satisfy the debt. Some lenders require a personal guarantee from the trustee or a related party, but that guarantee must also be limited in recourse to the single asset. A guarantee that extends to other fund assets or personal assets outside the fund will breach the limited recourse requirement and invalidate the arrangement.

Funds refinancing after the commencement of the Treasury Laws Amendment (Tax Reform No. 1) Act 2026 must also ensure the refinance does not constitute a new arrangement under the ATO's existing position. A significant change to the terms or conditions of the original loan may end the existing arrangement and trigger the post-commencement residential LRBA restriction. As at the date of publication, the ATO had not released updated guidance on the circumstances that constitute a new arrangement under the amended legislation.

Why Offset Accounts Affect Serviceability

Some lenders offer offset accounts against SMSF loans, but the funds held in the offset are not counted as liquid reserves for serviceability purposes unless the lender explicitly allows it. The offset reduces the interest charged but does not reduce the loan balance used in the serviceability calculation. A fund holding $50,000 in an offset against a $500,000 loan is still assessed on the full $500,000 balance unless the lender's policy permits the offset balance to be deducted from the loan for serviceability.

Funds considering an offset should confirm with the refinance lender whether the offset balance will be recognised in the serviceability assessment. If it is not, the fund may need to hold additional reserves in the transaction account to meet the buffer requirement, effectively duplicating the liquidity held in the offset.

Serviceability for SMSF loan refinancing is a technical calculation based on fund-specific income and reserves. If your fund is approaching a fixed rate expiry or you are comparing lenders for a lower rate, the numbers need to support the application before you proceed. Call one of our team or book an appointment at a time that works for you.

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