For roughly a decade, a very common reason to establish a self-managed super fund was this: set one up, borrow inside it, buy a residential investment property.
That door closed on 10 August 2026.
The change is narrower than the headlines suggest, and the difference matters — particularly if you already hold a property this way, or you were mid-transaction when it commenced.
What actually changed
The Treasury Laws Amendment (Tax Reform No. 1) Act 2026 received Royal Assent on 26 June 2026. The relevant provisions commenced 45 days later, on 10 August 2026.
From that date, where an SMSF uses a limited recourse borrowing arrangement to acquire real property, the property must be business real property.
Residential property is out — unless the property is used wholly and exclusively in one or more businesses, which is a much narrower gate than it first sounds. A building with an office downstairs and an apartment upstairs does not qualify. Partial residential use disqualifies the whole asset.
What survives — four things worth knowing
Existing arrangements are grandfathered. If your fund entered into a residential LRBA before commencement, it remains valid. You are not required to unwind it, sell the property, or repay the loan early.
Refinancing is still permitted. An existing borrowing can be refinanced after commencement. This matters — a grandfathered arrangement is not locked to its original lender for the life of the loan.
Contracts exchanged before 10 August 2026 are protected, even where settlement occurs afterwards. If you had exchanged before commencement, you are inside the old rules.
Business real property LRBAs are untouched, as are LRBAs over non-real-property assets such as listed shares or units in widely held trusts.
The strategy that survived, and is now more prominent
For business owners, the more useful half of the rule is entirely intact.
An SMSF can still borrow to buy commercial premises and lease them to a business the members run — at market rent, on arm's length terms, properly documented.
It is one of the few genuinely elegant structures in Australian superannuation. Rent that was leaving the business as an expense now arrives in a fund taxed at fifteen percent, or at nothing once the members are in retirement phase. The premises appreciate inside the concessional environment rather than outside it. And business real property is one of the narrow exceptions to the related party acquisition prohibition, so premises the members already own can, in the right circumstances, be transferred in at market value.
That last point is the exception, not the rule. The general prohibition on acquiring assets from related parties is close to absolute, and the exceptions are listed securities at market value and business real property at market value. A residential property you already own does not become eligible because the arrangement is documented commercially.
If your fund was set up for residential property
This is the question worth being honest about.
If an SMSF was established primarily to execute the borrow-and-buy-residential strategy, and the property has not yet been acquired, the reason for the fund has gone.
What remains is a structure with fixed annual costs — realistically several thousand dollars in accounting, audit and advice — sitting on a balance that may not justify them. Below roughly $200,000 to $300,000 those fixed costs are a heavier drag than any percentage-based fee a large fund would charge. The honest response is to revisit whether the fund should continue, not to look for a workaround.
If the property was already acquired under a grandfathered arrangement, nothing needs to change. But the exit assumptions are worth revisiting, because the pool of future buyers who can use borrowed money inside super to buy that property has just shrunk.
The rules that did not change, and still catch people
The borrowing rule was never the constraint that caused most SMSF property failures. These were.
The sole purpose test. A fund-owned property cannot be used personally, at all. Not a fortnight in the holiday apartment, not a weekend. One trustee who used a fund-owned beachfront apartment for roughly eleven percent of its available nights did not make the fund eleven percent non-compliant. The fund was non-compliant, and the consequence was measured in six figures.
The no-improvement rule. Under an LRBA, borrowed money cannot be used to improve the asset. Repairs and maintenance are permitted; improvements are not, and the line between them is not where most property investors assume it is.
Liquidity. A fund holding one property and very little cash still has to pay the loan, the outgoings, the annual audit — and, once members reach retirement phase, the minimum pension. A property cannot be sold in twelve percent increments to meet a drawdown. Concentration is lawful in an SMSF, provided the investment strategy genuinely addresses diversification and liquidity. Most strategies dispose of that requirement in a sentence, and the auditor notices.
What to do now
If you are already in a grandfathered arrangement, nothing is urgent. Confirm in writing with your adviser that the arrangement is grandfathered and that any refinancing plan preserves that status.
If you were about to establish a fund for residential property, stop and reprice the decision without the borrowing. In most cases the arithmetic no longer supports the structure.
If you run a business and rent your premises, this is the moment to look at the strategy that survived — because it was always the better one, and it now has a great deal less competition for attention.
Figures and rules in this article are current as at August 2026. Superannuation law changes frequently; confirm the position against ATO guidance before acting.
Adapted from The Self-Managed Super Fund Handbook by Paul Yang. See the books.