Beginner's guide to SMSF related party rent rules

Leasing property held in your SMSF to a related party requires you to charge market rent.

The arm's length requirement under section 109 of the SIS Act applies to all SMSF transactions. When your fund owns property and leases it to a related party, the rent must reflect what an independent tenant would pay for comparable premises in the same location. Anything less risks non-arm's length income provisions, which apply a 45 percent tax rate to the entire rental income stream.

Why Market Rent Matters for SMSF Compliance

The sole purpose test requires your SMSF to exist only for retirement benefits. Allowing a related party to occupy fund property for less than market rent constitutes a financial benefit that undermines that purpose. The ATO treats below-market rent as a breach, and the income generated may be taxed as non-arm's length income under section 295-550 of the Income Tax Assessment Act 1997.

Consider a fund that owns a commercial warehouse leased to a related company. If the lease specifies rent of $30,000 per annum when comparable properties in the same industrial precinct lease for $45,000, the entire $30,000 becomes taxable at the top rate rather than the concessional 15 percent rate that ordinarily applies to rental income in an SMSF. The shortfall doesn't just create a tax problem. It also exposes trustees to penalties for breaching their duties.

Business Real Property and the Related Party Exception

Business real property can be acquired from or leased to a related party without breaching in-house asset rules, but only if the lease is at market value. Section 66 of the SIS Act defines business real property as land and buildings used wholly and exclusively in one or more businesses. The business doesn't need to be operated by the tenant, but the property must be used in that business, not for private or domestic purposes.

A related party operating a retail business can lease a shopfront from the SMSF at market rent. The property qualifies as business real property if the tenant uses it wholly for the business. If the tenant also uses part of the premises as a residence, the property no longer meets the definition unless the dwelling occupies less than two hectares and the main use remains commercial.

How Market Rent is Determined

Market rent is the amount a willing tenant would pay a willing landlord for comparable property on arm's length terms. Both parties are assumed to be dealing independently, fully informed, and acting prudently without compulsion. Comparable evidence includes recent leases of similar properties in the same area, adjusted for differences in size, condition, location, and lease terms.

You cannot rely on outdated valuations or informal estimates. The ATO expects trustees to obtain an independent valuation from a qualified valuer before entering a lease with a related party. That valuation should be updated at intervals consistent with market conditions. In areas where property values and rental demand shift quickly, annual reviews are prudent.

What Happens When Rent Falls Below Market

If the ATO determines that rent charged to a related party is below market value, the entire income from that lease may be treated as non-arm's length income. The fund pays tax at 45 percent on that income rather than the concessional rate. The difference between the rent charged and market rent may also be treated as a benefit provided to the related party, triggering additional compliance issues including potential breaches of the sole purpose test.

In a scenario where an SMSF leases a commercial property to a member's company for $40,000 per annum and a valuation later confirms market rent should have been $55,000, the fund's trustees face both a tax liability on the discounted income and potential penalties for providing a benefit to a related party. Rectifying the issue requires adjusting the lease to market terms and addressing the historical shortfall, which may involve voluntary disclosure to the ATO.

Lease Terms That Preserve Arm's Length Character

Market rent is one element of an arm's length lease. Other terms must also reflect what independent parties would agree to, including lease duration, outgoings, rent reviews, and maintenance obligations. A lease that sets market rent but allows the tenant to defer payment indefinitely or avoid responsibility for repairs may still fail the arm's length test.

Rent review clauses should specify how and when rent will be adjusted. Fixed annual increases must remain within the range that independent landlords and tenants negotiate for similar properties. Market review clauses should require periodic revaluation by an independent valuer. The lease should be documented in writing and executed before the tenancy commences.

Residential Property and the 2026 LRBA Ban

From approximately 10 August 2026, new limited recourse borrowing arrangements can only be used to acquire business real property. Residential property no longer qualifies. Existing LRBAs over residential property remain protected if the contract was exchanged before the operative date. Grandfathered residential property can continue to be leased to third parties at market rent, but leasing residential property to a related party remains prohibited under the in-house asset rules regardless of when the property was acquired.

An SMSF that acquired residential property before the ban using an LRBA cannot lease that property to a fund member or their relatives even at market rent. The prohibition on related party leasing of residential property is separate from the 2026 borrowing changes and continues to apply.

Documentation and Ongoing Compliance

Trustees must retain evidence that the rent charged reflects market value at the time the lease commenced and throughout its term. This includes the independent valuation report, comparable lease evidence, and any subsequent rent review documentation. Where rent is reviewed annually or at other intervals, a new valuation or comparable market analysis should be obtained to support the revised rent.

If market conditions shift and the rent originally set at market value becomes higher or lower than current market rates, the lease terms should be adjusted at the next review point. Continuing to charge rent that no longer reflects market value exposes the fund to the same risks as setting below-market rent at the outset.

When to Seek Advice Before Entering a Related Party Lease

Before entering any lease arrangement between your SMSF and a related party, obtain advice from an SMSF specialist and an independent valuer. The valuer should be qualified, independent of both the fund and the related party, and able to provide a written report that sets out comparable evidence and the basis for the market rent conclusion. The SMSF specialist can review the lease terms to confirm they satisfy the arm's length requirement and do not create unintended breaches of the SIS Act.

Related party transactions are subject to heightened scrutiny. The cost of obtaining professional advice before entering a lease is substantially lower than the cost of rectifying a breach after the ATO raises concerns. If you're considering leasing SMSF property to a related entity, the structure must be right from the outset.

Call one of our team or book an appointment at a time that works for you. We work with SMSF specialists who understand the compliance framework and can help structure arrangements that meet both your retirement objectives and regulatory requirements.

Frequently Asked Questions