Do you know which property fits your investor profile?

The way you select property as an investor changed fundamentally in June when the Federal Government passed the Treasury Laws Amendment (Tax Reform No. 1) Act 2026.

From 1 July 2027, residential investment property will fall into two categories: properties that allow full negative gearing against your salary, and properties where rental losses can only offset other property income. Which category your property lands in depends entirely on when and what you buy. As someone managing complex technology implementations, you already know that system architecture decisions made early determine what's possible later. Property portfolio structure works the same way.

What qualifies as an eligible new build under the new rules

An eligible new residential dwelling is one constructed on previously vacant land, or a development that increases the total number of dwellings on a site. A property purchased from 7:30pm AEST on 12 May onwards qualifies for full negative gearing only if it meets this definition. A knock-down rebuild that replaces one dwelling with one dwelling does not qualify, even if the new structure is substantially larger or higher quality. Substantial renovations also fall outside the definition.

Once a new build has been occupied for more than 12 months and is then sold to a subsequent investor, that next purchaser cannot access negative gearing against their other income. The benefit attaches to the first investor only.

Properties purchased before the May announcement remain grandfathered

Any residential investment property you held at 7:30pm AEST on 12 May, or that you had under contract at that time, continues under the existing negative gearing rules until you sell. That includes established properties, renovations, and any dwelling type. If you were already building a portfolio, those assets retain their original tax treatment indefinitely.

Properties acquired between 12 May and 30 June 2027 fall into a transitional window. You can negatively gear them against your salary until 30 June 2027, but from 1 July 2027 onward, losses on those properties will be quarantined unless they meet the eligible new build criteria.

How the quarantine rule changes your cashflow and borrowing capacity

When rental losses from a non-eligible property can only offset other rental income or be carried forward, two things happen immediately. Your after-tax cost of holding that property increases because you no longer receive a tax refund on the loss each year. Your borrowing capacity for future purchases may also contract, depending on how lenders treat quarantined losses in their serviceability calculations.

Consider an IT project manager earning $160,000 who buys an established apartment generating a $12,000 annual loss after all deductible expenses. Under current rules, that loss reduces taxable income and delivers a refund of around $5,500 at the marginal rate of 45 per cent plus Medicare levy. From July 2027, if the property was purchased after 12 May and is not an eligible new build, the $12,000 loss carries forward but produces no immediate refund. The investor funds the full $12,000 shortfall from after-tax cash each year until the property becomes positively geared or is sold.

If you plan to build a portfolio of multiple properties, quarantined losses from one investment can offset income from another, but only once that second property starts producing a surplus. Until then, each negatively geared property increases your annual cash requirement without delivering a corresponding tax benefit.

Eligible new builds and the CGT indexation election

Eligible new residential properties also receive different capital gains tax treatment. From 1 July 2027, gains on most investment assets will be calculated using cost base indexation and a minimum 30 per cent tax rate, replacing the 50 per cent CGT discount. Eligible new builds, however, allow the investor to elect either the indexed method or the 50 per cent discount when the property is eventually sold.

The election happens at sale, not at purchase. You can assess which method produces the lower tax liability based on how inflation and property values moved during your ownership period. This optionality has value, particularly if you hold the property through periods of high inflation where indexation significantly reduces the real gain subject to tax.

Vacancy rates and rental yield affect which property type works for your situation

Properties that produce smaller losses, or reach positive cashflow sooner, reduce the impact of the quarantine rule. Rental yield and expected vacancy become more important selection criteria when you cannot offset losses against salary.

In our experience, investors who previously prioritised capital growth and accepted higher holding costs now need to recalibrate. A property with a 4 per cent gross yield and low vacancy will outperform a 3 per cent yield property in the same price range if both are subject to loss quarantine, even if the lower-yield property sits in a suburb with stronger historical capital growth. The difference is the speed at which rental income covers your interest and expenses.

Look at properties in precincts with consistent tenant demand and rental growth that outpaces expense growth. Units near major employment hubs, or properties suited to long-term tenants rather than short-stay or transient populations, reduce turnover costs and void periods. These factors mattered before, but the margin for error is now smaller when you are funding losses entirely from after-tax income.

How lenders assess new builds versus established property for investment loans

Lenders apply a serviceability buffer of 3 percentage points above the product rate and assess rental income at a discount, typically 80 per cent of the lease amount to account for vacancy and management costs. Some lenders apply additional haircuts to projected rental income on properties not yet completed, or in precincts with high investor concentration.

New builds, particularly off-the-plan purchases, may face more conservative rental income assumptions if the lender considers the area oversupplied or if comparable rental data is limited. This can reduce the loan amount you qualify for, even though the property itself offers negative gearing benefits. Established properties with an existing lease and rental history are generally assessed at face value, subject to the standard 20 per cent discount.

If you are purchasing an eligible new build to retain negative gearing, confirm the lender's valuation and rental income approach before exchanging contracts. Off-the-plan valuations on completion can differ from the contract price, and any shortfall will need to be funded from your own resources. Investment loans for tech industry workers are assessed on both the property's income-producing capacity and your ability to service the loan during construction or settlement delays.

Debt-to-income caps and portfolio expansion from February onwards

From 1 February, APRA introduced a debt-to-income cap that limits the proportion of new loans a lender can write at six times income or higher. The cap applies separately to investor and owner-occupier lending, and it affects your ability to add properties to an existing portfolio if your total debt is already high relative to your income.

If you hold multiple investment properties and your combined debt sits above six times your gross income, a lender may decline a new application even if you meet serviceability tests, because approving your loan would push them over their portfolio limit. This is not a hard regulatory ceiling on individual borrowers, but a constraint on how much high-DTI lending a bank can do in aggregate. In practice, it means borrowers with strong income and equity may still face difficulty accessing additional investment loan products unless they reduce debt or increase income first.

New dwelling construction loans and bridging finance for owner-occupiers are exempt from the DTI cap, which creates a structural advantage for investors willing to build or buy newly constructed properties. If expanding your portfolio is part of your wealth-building strategy, focusing on new builds not only preserves negative gearing but may also improve your chances of loan approval under the current prudential settings.

The foreign investment ban and its effect on established property supply

Foreign persons, including temporary residents, have been prohibited from purchasing established dwellings since 1 April 2025. The ban was extended to 30 June 2029 in the most recent Federal Budget. Foreign buyers can still acquire new dwellings and developments that increase housing supply, but the established property market is now restricted to Australian citizens, permanent residents, and New Zealand citizens.

This restriction has reduced competition for established stock in some submarkets, particularly apartments in inner-city precincts that previously attracted offshore buyers. Whether that results in lower prices or simply slower turnover depends on local supply and domestic demand. For investors, it means established property in areas historically popular with foreign buyers may take longer to sell when you eventually exit, and rental demand from temporary visa holders in those precincts may soften over time as that cohort finds it harder to purchase and transitions to longer-term renting or returns home.

Choosing property type when your income structure includes variable components

IT project managers often receive a mix of base salary, short-term incentives, and equity compensation. Lenders assess variable income components differently depending on payment history and contract terms. If a significant portion of your income is not recognised in full by the lender, your borrowing capacity may already be constrained before factoring in investment property serviceability.

In that scenario, selecting a property with lower holding costs becomes even more important. A positively geared or neutral cashflow property allows you to expand your portfolio without relying on lender recognition of STI or equity income to service the loan. Alternatively, structuring your investment loan as interest-only can reduce the annual repayment and improve serviceability, though you will need to demonstrate a plan for repaying principal over the loan term.

If you hold RSUs or other equity that vests periodically, you may also consider timing your property purchase to align with vesting events, using the proceeds to increase your deposit and reduce the loan amount. A lower loan-to-value ratio improves your interest rate, may eliminate or reduce Lenders Mortgage Insurance, and increases the likelihood of approval if your income assessment is marginal. More detail on how equity compensation is treated in lending assessments is covered in our guide to understanding your income.

Where offset accounts and loan features affect your after-tax position

Investment loans commonly include offset accounts, redraw facilities, and the option to split between variable and fixed rates. The value of these features changes depending on whether your property is subject to loss quarantine.

If you can fully negatively gear a property, every dollar of interest you pay is deductible. Parking surplus cash in an offset account linked to the investment loan reduces the interest charged, which reduces your deduction and increases your taxable income. In that case, it may be more efficient to place surplus funds in an offset account linked to non-deductible debt, such as an owner-occupied mortgage, or to invest surplus cash elsewhere.

If your property losses are quarantined, reducing interest costs becomes more valuable because you are funding those costs from after-tax income without receiving an immediate refund. An offset account linked to the investment loan reduces your out-of-pocket cashflow, and the foregone deduction has no immediate tax impact because the loss is carried forward rather than claimed.

The same logic applies to interest-only versus principal-and-interest repayment structures. Interest-only loans maximise your deduction when negative gearing is available. When losses are quarantined, paying down principal faster can reduce future interest costs and improve cashflow over time, though it ties up capital in the property rather than leaving it available for other investments. The right structure depends on your broader portfolio and liquidity needs. Reviewing your loan structure as part of an investment loan refinance can improve alignment with the new tax rules.

Your approach to property selection now depends on whether you are building a portfolio before July 2027 while transition rules still allow negative gearing, or whether you are structuring for a post-2027 environment where property type determines tax treatment. Either way, the decision you make about which property to buy has more permanent consequences than it did 12 months ago.

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