Simple hacks to cut SMSF loan costs with refinance

Refinance SMSF Loan Without Changing Repayment Structure

You can refinance an SMSF loan and switch between principal and interest and interest only repayment structures without triggering compliance issues, provided the refinance relates to the same single asset and maintains limited recourse terms. The ATO considers refinancing to be entering a new loan contract for the same property with the same or a different lender.

Trustees with residential LRBAs established before 10 August 2026 can refinance SMSF loan arrangements to a new lender without the refinanced arrangement being subject to the post-commencement residential restrictions. Commercial property LRBA refinancing remains unaffected by the recent rule changes. The critical compliance point is that the refinanced loan must relate to the same single acquirable asset originally purchased under the arrangement.

Principal and Interest Cuts the Balance, Interest Only Holds Cash

Principal and interest repayments reduce the loan balance each month, building equity in the property held by the fund. Interest only repayments keep the balance static and redirect cash flow back into the fund's operating account.

Consider a South Australian SMSF trustee with a $400,000 commercial property loan in Port Adelaide at 6.2% variable. Under principal and interest, monthly repayments sit around $2,450, with roughly $380 going to principal reduction in the first month. Under interest only at the same rate, repayments drop to $2,067 per month, freeing up approximately $380 monthly or $4,560 annually. That cash stays in the fund. Whether that matters depends on rental yield, member contribution capacity, and whether the fund intends to sell the property within a defined time frame or hold it through to pension phase.

SMSF Refinance Interest Rate and Safe Harbour Compliance

Any refinanced SMSF loan must meet arm's length terms, which the ATO defines through Practical Compliance Guideline PCG 2016/5. The guideline publishes annual safe harbour interest rates for both real property and listed securities. Arrangements that fall outside these rates risk having rental income or dividends classified as non-arm's length income and taxed at 45 percent rather than the concessional 15 percent rate.

PCG 2016/5 applies to all SMSF trustees with LRBAs regardless of when the arrangement commenced. When comparing SMSF refinance lenders, confirm that the proposed rate and loan structure align with the current safe harbour benchmarks. A rate that appears attractive on the surface may expose the fund to significant tax consequences if it sits below the arm's length threshold for the relevant asset class and loan-to-value ratio.

How Interest Only Affects Commercial SMSF Loan Refinance in South Australia

Interest only terms extend cash runway for SMSF commercial property holdings, particularly where the fund holds industrial assets in suburbs like Wingfield or Gepps Cross with net yields above 7 percent. The rental income covers the interest cost, and surplus cash accumulates in the fund rather than being absorbed by principal reduction.

In our experience, trustees refinancing commercial LRBAs typically select interest only when they intend to sell the property within five to seven years or when member contributions are irregular. The structure works when the fund generates sufficient income to meet the interest obligation without relying on member cash top-ups. A $600,000 loan at 6.5% interest only costs $3,250 per month. If the property yields $42,000 annually after outgoings, the fund retains roughly $3,250 per month after loan servicing, which can be directed toward insurance premiums, accounting fees, or accumulation for the next acquisition.

SMSF Residential Loan Refinance and Offset Accounts

Genuine offset accounts offered by an authorised deposit-taking institution are not treated as a borrowing or a charge over fund assets under ATO guidance. An offset account linked to a refinanced SMSF residential loan reduces the interest charged on the loan balance without requiring principal repayments.

Offset functionality works identically under principal and interest or interest only structures. The balance held in the offset account reduces the loan balance on which interest is calculated daily. For a $500,000 loan at 6.0%, an offset balance of $50,000 saves approximately $3,000 annually in interest. That saving applies whether the loan is structured as principal and interest or interest only, and the cash in the offset remains accessible to the fund for operating expenses or future investment opportunities.

When SMSF Fixed Rate Expiring Triggers Refinance Review

When an SMSF fixed rate term ends, the loan typically reverts to the lender's standard variable rate, which can sit 0.5% to 1.2% above the market variable rate offered to new borrowers. That revert rate difference costs a fund with a $400,000 loan balance an additional $2,000 to $4,800 per year.

Refinancing to a new lender at a lower variable rate, or refixing with a competitive lender, eliminates the revert rate penalty. Trustees should review refinance options at least 90 days before the fixed term expires to allow time for application, valuation, and settlement. The refinance process for an SMSF loan typically requires updated trust deed and trustee documentation, a current property valuation, and confirmation that the fund remains compliant with the sole purpose test and in-house asset rules.

Switch SMSF Lender Without Ending the Existing Arrangement

Refinancing to a new lender does not end the existing LRBA arrangement provided the refinanced loan relates to the same single asset, maintains the limited recourse character of the original arrangement, and does not involve borrowing for an asset not contemplated under the original arrangement. Changing the ultimate beneficiaries of the arrangement or introducing terms inconsistent with the original structure may end the existing arrangement and trigger a new one.

For residential LRBAs established before 10 August 2026, this distinction matters. A refinance that ends the existing arrangement and creates a new one entered into after the commencement date would be subject to the post-commencement residential restrictions and could not proceed. Trustees should confirm with a specialist SMSF refinance broker that the proposed refinance structure preserves the existing arrangement rather than terminating it.

Can I Refinance My SMSF Loan and Change Repayment Type

Yes. Switching from interest only to principal and interest, or the reverse, during refinance does not breach LRBA compliance rules provided the loan continues to relate to the same asset and maintains limited recourse terms. The choice between the two structures should be driven by the fund's cash flow position, the property's rental yield, and the trustee's investment time frame.

Trustees approaching pension phase may prefer principal and interest to reduce the loan balance before commencing an account-based pension, minimising the debt serviced from pension income. Trustees in accumulation phase with strong member contribution capacity may prefer interest only to retain liquidity and flexibility for additional investments. Both structures are available under refinance, and neither compromises the compliance status of the arrangement when structured correctly.

Call one of our team or book an appointment at a time that works for you to review your SMSF loan structure and refinance options tailored to your fund's position.

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