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Related-party SMSF leases: keeping your business premises compliant

If your SMSF owns your business premises and leases it back to your company, the numbers and paperwork must be exactly right. This guide shows how to set rent, document the lease and avoid new ATO pitfalls.

16 Sept 2026Updated 16 Sept 20267 min read

Key Takeaway

When an Australian SMSF owns business premises and leases it to a related party, the rent, terms and conduct must be demonstrably arm’s length to satisfy ATO rules, or all income could be treated as non‑arm’s length with tax of up to 45%. Key compliance tests cover independent market rent, a formal commercial lease, prompt payments, and clear records of reviews and arrears management. Trustees should benchmark rent annually and stress test cashflow before entering or renewing related‑party leases.

Related-party SMSF leases: keeping your business premises compliant

If your SMSF owns your business premises and leases it back to your company, you must charge market rent on fully commercial terms or risk the ATO treating income as non‑arm’s length and taxing it at up to 45%. That means independent evidence of rent, a written lease, on‑time payments and clean records that would satisfy any third‑party auditor.

In a week, you can review your lease, fix obvious gaps and line up advice so your SMSF–business setup is safer before the next audit.

Reviewing an SMSF related-party commercial lease document A formal, commercial lease is essential when your SMSF rents to your own business.

1. SMSF related‑party leases in plain English

A related‑party SMSF lease is where your SMSF owns a property and rents it to your business or a related entity. This is allowed for business real property under SIS rules, but only if everything is at arm’s length – as if you were dealing with a stranger.

Core compliance tests:

Market rent based on solid evidence.
Written, commercial lease terms.
Payments made on time, in full.
Clear treatment of outgoings and fit‑out.
Proper documentation for any changes.

If any of these look like “favourable treatment”, the ATO may argue the fund has non‑arm’s length income (NALI) and apply punitive tax.

When a related‑party lease makes sense

Your business is stable and can commit to a medium‑term lease.
The property is genuinely used in the business (no holiday houses disguised as ‘offices’).
You’ve already weighed up owning in super versus personally – see /insights/hold-next-property-in-super-vs-personally-after-budget.

2. Setting arm’s length rent (and proving it)

The ATO’s focus has shifted from just having a lease to proving that every key number is commercial — especially rent.

What counts as arm’s length rent?

Similar level to comparable local properties.
Adjusted for size, quality, parking, incentives and fit‑out.
Backed by evidence you can show an auditor, not just a guess.

Good evidence options:

Independent rental valuation from a qualified valuer.
Local commercial agent letter or rental appraisal.
At least three comparable listings, printed and file‑noted.

Worked example: checking your rent

SMSF owns a small warehouse in Mascot.
Independent agent says market rent is $75,000 + GST p.a.
Your business currently pays $54,000 + GST p.a.

You are $21,000 p.a. under market (28% below). If that’s not corrected, the ATO could argue the SMSF is giving the business a benefit and re‑characterise part of the fund’s income as NALI.

Practical fix this week:

Get up‑to‑date evidence.
Agree a plan to lift rent in one or two steps (document it).
Minute the decision as trustees and update the lease schedule.

Compare: tight vs loose rent practices

Practice	Compliant approach	Risky approach
Rent level	Based on independent evidence, documented	‘Mates‑rates’ guess, no supporting data
Rent reviews	Annual CPI/market review in lease	Never reviewed; same rent for 8–10 years
Incentives/fit‑out	Clearly documented and amortised	Informal rent‑free periods, no paperwork
Adjusting under/over market rent	Plan and minute staged corrections	Hope no‑one notices until audit

3. Lease terms, arrears and new ATO red flags

Recent ATO guidance and review activity show they’re looking beyond the headline rent at how the lease actually operates. ### Lease terms that must look commercial At minimum, your lease should clearly state: - Parties (SMSF landlord, company tenant, ABNs). - Premises description and permitted use. - Rent, reviews and payment dates. - Outgoings: who pays what. - Term and options, with market reviews. - Default and termination clauses. If your current lease is a two‑page template without defaults, options or review clauses, that’s a compliance risk, not a convenience.…

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Frequently asked questions

Can my SMSF charge below market rent to my business?▾

Charging clear ‘mates-rates’ to your own business is not acceptable under SMSF rules because it fails the arm’s length test. Small differences that can be justified with evidence and negotiation are less risky, but deliberate under-charging can trigger non-arm’s length income issues. If you find your rent is too low, document a plan to move it back to market as soon as practical.

What if my business falls behind on rent to my SMSF?▾

Short-term arrears can be managed if you treat them commercially, record them properly and charge interest where appropriate. Persistent arrears, informal rent waivers or large, irregular catch-up payments with no paperwork are red flags for auditors. They suggest the arrangement is not arm’s length and may invite ATO scrutiny and potential penalties.

Does a related-party SMSF lease need a formal lease document?▾

Yes, a written commercial lease is essential when your SMSF rents property to a related business. It should clearly set out rent, reviews, terms, outgoings and default provisions, just like a third-party lease. Relying on informal arrangements or email chains makes it very hard to prove arm’s length dealing if the ATO reviews your fund.

How often should SMSF rent be reviewed for a related-party tenant?▾

Most commercial leases include annual CPI or fixed increases plus periodic market reviews, and related-party leases should follow similar patterns. You don’t necessarily need a full valuation every year, but you do need reasonable evidence that the rent remains within market range. Agent appraisals, comparable listings and periodic valuations should be kept on file.

Can my SMSF pay for fit-out works in my business premises?▾

Your SMSF can fund landlord-style fit-out works, but the terms must be clearly documented and reflected in rent or incentives. If the SMSF pays for business-specific improvements without a commercial adjustment to rent, it can be seen as providing financial assistance to a member or related party. That risks breaching SIS rules and creating non-arm’s length income problems.

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