SMSF Capital Gains Tax: Australian Property Guide for 2026

SMSF capital gains tax is usually paid at 10% on eligible long-term property gains in accumulation phase, but it can fall to nil when the asset fully supports pension accounts. The actual outcome depends on tax phase, 12-month ownership, capital losses, and SMSF property rules.

SMSF Capital Gains Tax Basics

A self managed super fund is a separate tax entity. When an SMSF sells residential property, commercial property, shares, or other assets for more than their cost base, the fund makes capital gains. The ATO says a complying SMSF includes net capital gains in its assessable income, along with rent, interest, dividends, and assessable contributions.

For a complying SMSF in accumulation phase, the fund's assessable income is generally taxed at 15%. If the relevant asset has been owned for at least 12 months, the SMSF can usually apply a one third CGT discount. That reduces the taxable gain by one third, turning the effective tax rate on the discounted capital gain into 10%.

Personal capital gains tax is different: individuals may receive a 50% CGT discount, while complying SMSFs receive one third.

Capital Gains Tax And Assessable Income

An SMSF does not pay tax on each asset in isolation. It calculates total capital gains for the financial year, subtracts eligible capital losses, applies the CGT discount where available, and includes the net capital gain in assessable income.

Non-Arm's Length Income (NALI) is taxed at the highest marginal rate of 45% if transactions are not conducted at market value. A non-complying fund can also face a 45% tax rate on capital gains and other income, so compliance status is not a footnote.

For example, assume an SMSF bought a Brisbane commercial suite for $620,000 and sold it in 2026 for $790,000. Selling costs were $18,000 and the adjusted cost base was $638,000.

The effective tax on the original $152,000 capital gain is about 10%, because the asset was held for more than 12 months and the SMSF was a complying fund. If the same asset had been sold within 12 months, the full $152,000 gain would generally be included, creating $22,800 of fund tax at 15%.

CGT Discount Rules For SMSF Capital Gains

The cgt discount is available to a complying SMSF when the asset has been owned for at least 12 months. Trustees need settlement dates, purchase contracts, selling costs, stamp duty records, and improvement costs so the cost base is documented.

The one third discount applies after capital losses are used. If the fund has a $152,000 gross gain and $20,000 of current year capital losses, the loss is applied first. The one third discount then applies to the remaining $132,000 gain.

That sequence matters. Capital losses from the current year or previous years can reduce capital gains before discounts are applied, lowering the SMSF's overall tax liability. Net capital losses can be carried forward to offset future capital gains.

Capital Losses And Future Capital Gains

Capital losses are useful, but they have strict limits. An SMSF with a net capital loss for the year carries it forward. The fund cannot use that capital loss to reduce rental income, concessional contributions, or dividends.

Consider an SMSF that sold listed securities at a $30,000 capital loss in 2025 and then sold a residential property with a $120,000 capital gain in 2026. The carried forward loss reduces the gain to $90,000 before the one third discount is considered, assuming the property qualifies for the discount.

This is where portfolio records matter. PropBoss handles this automatically -- the portfolio return calculator helps track purchase price, sale value, income, costs, and return on investment before your accountant finalises the tax position.

Exempt Current Pension Income

Exempt current pension income can change the tax result completely. The ATO describes ECPI as ordinary and statutory income that an SMSF earns from assets supporting retirement phase income streams. It can include capital gains where the pension phase rules are met.

If all of the fund's assets are segregated current pension assets for the whole relevant period, income from those pension assets may be exempt. In that case, capital gains and capital losses from those segregated pension assets are ignored for tax purposes. If an SMSF is entirely in pension phase for the full financial year, capital gains on assets supporting those pensions are typically exempt from tax.

If the fund has both accumulation and pension phase members, the SMSF may need the proportionate method and an actuarial certificate. The net capital gains are added to assessable income before the exempt percentage is applied.

Here is a simplified example:

The exact method depends on the fund's financial situation, member balances, pension documents, and the fund's assets. Get professional advice before treating a sale as tax exempt.

Borrow Money In An SMSF

An SMSF can borrow money only in limited circumstances, most commonly through a limited recourse borrowing arrangement. Under an LRBA, the SMSF trustee obtains a loan to buy a single acquirable asset, the asset is usually held in a separate holding trust, and recourse is limited to that asset.

The ATO says borrowed money can be used to acquire the asset and to pay certain acquisition expenses, including loan costs and stamp duty. It cannot be used to improve the asset under current LRBA rules. Trustees also need documentation showing a genuine borrowing, especially where a related party lender is involved.

SMSF borrowing affects capital gains tax records because loan interest, purchase costs, and sale costs need to be separated correctly.

Buy Property From A Related Party

SMSF trustees need to be careful when they buy property from a related party. The rules against acquiring assets from related parties are strict, although exceptions can apply for assets such as listed securities and business real property acquired at market value.

Residential property is especially sensitive. A member generally cannot transfer personally owned residential property into the SMSF and treat it like an ordinary investment. Commercial premises can be more workable if they satisfy business real property requirements and all dealings are at market value.

The fund must also satisfy the sole purpose test. The SMSF's investments must be maintained for retirement benefits, not for current personal use by members, relatives, or related entities.

Commercial Property And Residential Property

Commercial property often appears in SMSF strategies because business real property can sometimes be leased to a related business at market rent. The lease must be documented, rent must be paid on commercial terms, and the property should be valued properly.

Residential property is less flexible. If fund members or related parties use it, the arrangement can breach SMSF rules. If the property is acquired through an LRBA, trustees also need to monitor borrowing terms, repairs, improvements, and related party transactions.

For a practical view of portfolio returns, compare the SMSF property against other assets using return on investment, cash yield, capital growth, tax rate, insurance, loan repayments, and vacancy risk.

Fund's Assets And Record Keeping

The fund's assets should be supported by clean documentation. For property, keep contracts, settlement statements, stamp duty records, loan agreements, bank statements, rental statements, valuations, and sale documents. Accurate valuation records help prevent over-calculation of capital gains.

Trustees should also keep notes about major decisions. If the SMSF purchased commercial premises, record why the purchase matched the investment strategy and how market value was determined.

ATO reporting is easier when records are captured as transactions happen.

Capital Gains In A Portfolio Context

SMSF capital gains tax should not be reviewed only at sale time. Investors should model the sale before they sell, because timing can change the fund's tax, member balances, pension phase percentages, and future retirement savings.

When property is sold within an SMSF, the proceeds are paid into the SMSF bank account and the sale is a CGT event. Capital losses from a property sale can offset capital gains from other assets in the same financial year, or be carried forward to future years until used.

A property with a $180,000 unrealised gain might look attractive to sell, but the after-tax result could be very different if the sale happens one month before a member starts a retirement phase income stream.

Portfolio planning also compares property against alternatives, because each choice changes income, liquidity, and future capital gains.

For broader portfolio planning, see the PropBoss guide to building a property portfolio in Australia and compare sale scenarios with the capital gains tax calculator.

Trustee Checklist Before A Sale

Before a sale transaction, trustees should check whether the property is owned by the fund or a bare trust, whether it is leased to a related business or company, and whether fund members can access benefits only after meeting a condition of release. The account records should show purchase costs, loan repayments, contributions, rent income, expenses, market value evidence, and net capital calculations. A property sold to, from, or in relation to a related party must comply with SMSF regulations, and any eligible exemption should be documented before money moves.

FAQ

Is SMSF capital gains tax 10% or 15%?

It is generally 15% on taxable fund income in accumulation phase, but an eligible SMSF asset held for at least 12 months can receive a one third CGT discount. That makes the effective tax rate on the discounted gain about 10%.

Does an SMSF pay capital gains tax in pension phase?

It may pay no tax on capital gains from assets that fully support retirement phase income streams and qualify as exempt current pension income. Mixed accumulation and pension phase funds may need an actuarial percentage, so the answer depends on the fund's facts.

What happens to SMSF capital losses?

Capital losses can offset capital gains. If capital losses exceed capital gains, the net capital loss is generally carried forward and used against future capital gains. It does not reduce rent, interest, dividends, or assessable contributions.

Can an SMSF borrow money to buy property?

Yes, but only in limited circumstances such as an LRBA. The borrowed money must be used for an allowable asset and related acquisition expenses, and the arrangement must comply with superannuation law.

Is there a tool that does this automatically?

PropBoss tracks SMSF property performance with portfolio dashboards, automated bank feeds, depreciation schedules, and ATO-compliant reporting. It handles purchase costs, sale estimates, income, expenses, and portfolio return tracking. Start with PropBoss.

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External references: ATO guidance on SMSF tax, exempt current pension income, and limited recourse borrowing arrangements.