Existing investment properties may be grandfathered under the proposed negative gearing changes if they were held before 7:30 pm AEST on 12 May 2026. This means eligible investors may be able to keep using the current negative gearing rules for those properties, even if future investors face tighter limits.
From 1 July 2027, the proposed rules may limit negative gearing to qualifying new builds, while established properties bought after the Budget night cut-off may have rental losses quarantined instead of being offset against salary, wages or other income.
Although the proposal is not yet law, investors should understand how grandfathering may affect tax deductions, cash flow, capital gains tax planning and property records before making major investment decisions.
What is negative gearing grandfathering?
Negative gearing grandfathering means existing tax rules may continue to apply to certain properties after new rules begin.
Negative gearing occurs when an investment property costs more to hold than it earns in rent. These costs may include:
- loan interest
- council rates
- insurance
- repairs and maintenance
- property management fees
- other deductible holding costs
Under current rules, many investors can use a rental loss to reduce other taxable income, such as salary or wages. This can lower their tax bill and improve after-tax cash flow.
Grandfathering may protect some existing property owners from proposed rule changes. Under the 2026 Federal Budget proposal, investors who held eligible properties before the Budget night cut-off may continue using the current negative gearing rules for those properties.
In simple terms, the key question is whether you held the property before the proposed changeover date, and whether it falls within the grandfathering rules.
Quick summary of the proposed negative gearing changes
| Investor situation | Likely proposed treatment | Main issue to check |
|---|---|---|
| Existing investment property held before 7:30 pm AEST on 12 May 2026 | May be grandfathered | Ownership and contract records |
| Established property bought after the cut-off | Rental losses may be quarantined | Whether losses can offset salary or wages |
| Qualifying new build bought after the cut-off | May keep broader negative gearing treatment | Whether the property adds new housing supply |
| Property sold after the cut-off | Grandfathering may not transfer | Future buyer may face new rules |
| Investor selling after 1 July 2027 | CGT planning may become more important | Valuation, cost base and carried-forward losses |
Are existing investment properties grandfathered?
Under the 2026 Federal Budget proposal, existing investment properties held before 7:30 pm AEST on 12 May 2026 may be grandfathered.
This means eligible investors may be able to keep using the current negative gearing rules for those properties.
A grandfathered property may allow rental losses to continue reducing other taxable income, such as:
- salary
- wages
- business income
- other taxable income
This could help preserve the annual tax treatment that many existing property investors currently rely on.
However, grandfathering is expected to apply to the current owner, not the property forever. If the property is sold after the cut-off, the next owner may be subject to the new negative gearing rules.
The final treatment will depend on legislation.
Key dates property investors need to know
Negative gearing grandfathering depends heavily on timing. Investors should understand the key dates that may affect their position.
| Date or timing issue | Why it matters |
|---|---|
| 7:30 pm AEST, 12 May 2026 | Proposed Budget night cut-off for grandfathering |
| 1 July 2027 | Proposed start date for the new negative gearing rules |
| Contract date | May help determine whether a property was acquired before the cut-off |
| Settlement date | May be relevant depending on final legislation |
| Sale date | May affect whether grandfathering ends |
| Future CGT event | May affect how carried-forward losses and capital gains are treated |
Property investors should keep clear records of:
- contract date
- settlement date
- purchase price
- property type
- rental income
- deductible expenses
- renovation and improvement costs
- sale date, if the property is later sold
What did the 2026 Federal Budget propose?
The 2026 Federal Budget proposed major changes to negative gearing for residential property investors.
From 1 July 2027, negative gearing may be limited to qualifying new residential builds. This means investors who buy eligible new builds may still be able to offset rental losses against other taxable income.
Established residential properties may be treated differently. If an investor buys an established property after the Budget night cut-off, rental losses may no longer reduce salary, wages or other non-property income.
Instead, those losses may be quarantined. This means they may be carried forward and used against future residential property income or residential property capital gains.
The proposal creates three main investor categories.
| Property category | Proposed treatment |
|---|---|
| Existing property held before the cut-off | May be grandfathered |
| Established property bought after the cut-off | Rental losses may be quarantined |
| Qualifying new build | May keep broader negative gearing treatment |
Because the rules are not yet law, investors should avoid making decisions based only on the proposal.
Who may qualify for negative gearing grandfathering?
Under the proposal, negative gearing grandfathering may apply to investors who held an eligible residential investment property before the Budget night cut-off.
The proposed cut-off is 7:30 pm AEST on 12 May 2026.
The final legislation will determine the exact eligibility rules, but the following factors may be relevant.
| Question | Why it matters |
|---|---|
| Did you own the property before the cut-off? | This may determine whether the property is grandfathered |
| Was the property contracted before the cut-off? | Contract timing may be relevant under final rules |
| Did settlement occur after the cut-off? | Final legislation may clarify how this is treated |
| Is the property an established residential property? | Different rules may apply to established properties and new builds |
| Is the property used to produce rental income? | Negative gearing generally depends on income-producing use |
| Has the property been sold? | Grandfathering may end when the current owner sells |
A grandfathered property may keep its existing tax treatment while the current owner continues to hold it.
Once sold, the grandfathering status is not expected to pass to the next buyer.
What happens to established properties bought after Budget night?
Established residential properties bought after the Budget night cut-off may not receive the same negative gearing treatment as grandfathered properties.
Under the proposal, investors who buy an established residential property after 7:30 pm AEST on 12 May 2026 may not be able to offset rental losses against salary, wages or other non-property income from 1 July 2027.
Instead, those losses may be quarantined.
This means the rental loss may be:
- carried forward
- used against future residential property income
- used against future residential property capital gains
- unavailable as an immediate offset against salary or wages
This could affect short-term cash flow. The investor may still have the same holding costs, but the tax benefit may be delayed.
| Example | Current rules | Proposed treatment for affected post-cut-off established property |
|---|---|---|
| Rental loss | $10,000 | $10,000 |
| Offset against salary income? | May be allowed | May not be allowed |
| Immediate tax benefit | Possible | Delayed |
| Loss treatment | Claimed in the year incurred | Carried forward and quarantined |
For investors looking at established properties after Budget night, after-tax cash flow modelling may become more important.
What does it mean if rental losses are quarantined?
A quarantined rental loss is a loss that cannot be used immediately against other types of income.
Instead of reducing salary or wage income in the same financial year, the loss may be carried forward and used later.
Under the proposal, quarantined losses from affected established properties may be used against:
- future residential property income
- future capital gains from residential property
This could change the way investors assess property cash flow.
| Current negative gearing treatment | Quarantined loss treatment |
|---|---|
| Rental loss may reduce salary or wage income | Rental loss may not reduce salary or wage income |
| Tax benefit may be received sooner | Tax benefit may be delayed |
| May improve annual cash flow | May increase short-term holding pressure |
| Loss is used in the year incurred | Loss may be carried forward |
The property may still produce a tax benefit in the future, but the timing of that benefit could change.
How do new builds fit into the proposed rules?
New builds may receive more favourable tax treatment under the proposed negative gearing changes.
From 1 July 2027, the proposal may limit negative gearing to qualifying new residential builds. This means investors who buy an eligible new build may still be able to offset rental losses against salary, wages or other taxable income.
The policy aim is to direct investor demand towards properties that add new housing supply.
A qualifying new build may include:
- a newly constructed house
- an off-the-plan apartment
- a house-and-land package
- a new townhouse
- a new duplex
- a multi-dwelling development that increases housing supply
However, not every new-looking property may qualify. A cosmetic renovation or substantial upgrade may not be enough if it does not create additional housing supply.
| Property type | May qualify? | Why |
|---|---|---|
| Newly built house | Possibly | Creates a new dwelling |
| Off-the-plan apartment | Possibly | May form part of new residential supply |
| House-and-land package | Possibly | May create a new dwelling |
| New townhouse | Possibly | May add new residential stock |
| Duplex or multi-dwelling project | Possibly | May increase the number of homes on the site |
| Established house bought after the cut-off | Less likely | Does not add new housing supply |
| Cosmetic renovation | Unclear or less likely | May not create additional housing stock |
Investors should check contract documents, completion dates, development status and final legislative definitions before relying on negative gearing treatment for a new build.
How could grandfathering affect investor cash flow?
Negative gearing grandfathering may affect how much tax relief an investor receives each year.
A grandfathered property may continue to allow rental losses to reduce other taxable income. This may help improve after-tax cash flow because the investor may receive a larger tax refund or pay less tax.
A non-grandfathered established property may work differently. If losses are quarantined, the investor may still carry the loss forward, but the tax benefit may be delayed.
This timing difference can be important because investors may still need to pay:`
- loan interest
- council rates
- insurance
- property management fees
- repairs and maintenance
- strata levies
- land tax, where applicable
| Property type | Possible cash flow impact |
|---|---|
| Grandfathered property | Rental losses may still reduce other taxable income |
| Post-cut-off established property | Tax benefit may be delayed if losses are quarantined |
| Qualifying new build | May continue to provide broader negative gearing benefits |
| Highly geared property | May need closer cash flow modelling |
| Property with major repairs or holding costs | May be more sensitive to delayed deductions |
Investors may need to review both pre-tax and after-tax cash flow before buying, holding or selling.
Why records, valuations and tax depreciation schedules may matter more
The proposed negative gearing and capital gains tax changes may make property records more important.
Investors may need to prove ownership dates, purchase details, deductions, capital improvements and future capital gains calculations.
Strong records may help support:
- grandfathering eligibility
- rental loss calculations
- carried-forward loss tracking
- depreciation deductions
- capital gains tax calculations
- future tax advice
| Record or report | Why it may matter |
|---|---|
| Contract of sale | Helps support acquisition timing |
| Settlement statement | Confirms transaction details |
| Loan records | Supports interest deduction records |
| Rental statements | Tracks rental income and property performance |
| Expense records | Supports deductible holding costs |
| Renovation invoices | Helps distinguish repairs from capital improvements |
| Tax depreciation schedule | Identifies capital works and plant and equipment deductions |
| CGT valuation | May support future capital gains tax calculations |
| Sale documents | Helps determine when grandfathering ends |
A tax depreciation schedule may remain important because it can help identify eligible depreciation deductions during ownership.
These deductions may include:
- capital works deductions
- plant and equipment depreciation
- eligible fixed assets
- asset values
- improvement records
A capital gains tax valuation may also become more important if an investor needs to support a future cost base, market value or CGT calculation.
Example scenarios: grandfathered vs non-grandfathered properties
The impact of the proposed negative gearing changes may depend on when the property was acquired and what type of property it is.
| Scenario | Property type | Timing | Likely proposed outcome |
|---|---|---|---|
| Investor A | Established rental property | Held before 7:30 pm AEST on 12 May 2026 | May be grandfathered |
| Investor B | Established rental property | Bought after the cut-off | Rental losses may be quarantined from 1 July 2027 |
| Investor C | New residential build | Bought after the cut-off | May keep broader negative gearing treatment |
| Investor D | Grandfathered property later sold | Sold after the cut-off | Grandfathering may not transfer to buyer |
In simple terms:
- Existing properties held before the cut-off may be grandfathered.
- Established properties bought after the cut-off may face tighter treatment.
- Qualifying new builds may continue to receive more favourable negative gearing treatment.
- Grandfathering is expected to remain with the current owner, not the next buyer.
What should property investors do next?
Property investors do not need to panic, but they should prepare.
The proposed rules could change how investors assess established properties, new builds, rental losses and future capital gains.
Before buying, selling or refinancing, investors should review their position and understand which rules may apply.
This is especially important for investors who:
- bought close to Budget night
- plan to buy after the cut-off
- own a negatively geared established property
- are considering a new build
- may sell after 1 July 2027
- have significant renovation or improvement costs
- need better tax records before future changes begin
Practical investor checklist
Investors should consider the following steps.
- Check whether the property was held before the Budget night cut-off.
- Keep contract and settlement documents.
- Confirm whether the property is established or a new build.
- Review rental income, expenses and expected losses.
- Model after-tax cash flow before buying another property.
- Track rental losses and carried-forward amounts.
- Keep records of renovations and capital improvements.
- Review whether your tax depreciation schedule is up to date.
- Consider whether a CGT valuation may be needed.
- Speak with a qualified tax adviser before making major decisions.
Key takeaways
- Existing investment properties held before the Budget night cut-off may be grandfathered.
- The proposed cut-off is 7:30 pm AEST on 12 May 2026.
- The proposed new rules may begin from 1 July 2027.
- Established properties bought after the cut-off may have rental losses quarantined.
- Qualifying new builds may continue to receive more favourable negative gearing treatment.
- Grandfathering is not expected to transfer to the next buyer when a property is sold.
- Property records, depreciation schedules and CGT valuations may become more important.
- The proposal is not yet law, so investors should wait for final legislation before acting.
Frequently asked questions
Will existing investment properties be grandfathered?
Under the proposal, existing investment properties held before 7:30 pm AEST on 12 May 2026 may be grandfathered. This means eligible investors may keep using the current negative gearing rules for those properties. The final treatment will depend on legislation.
What does grandfathering mean for negative gearing?
Grandfathering means existing tax rules may continue to apply to certain properties after new rules begin. For negative gearing, this may allow eligible existing investors to keep offsetting rental losses against salary, wages or other taxable income.
Does grandfathering transfer when a property is sold?
Grandfathering is expected to apply to the current owner, not the property forever. If a grandfathered property is sold after the cut-off, the next buyer may be subject to the new negative gearing rules.
What happens to rental losses on established properties bought after the cut-off?
Rental losses from some established properties bought after the cut-off may be quarantined. This means the loss may be carried forward and used against future residential property income or residential property capital gains, instead of reducing salary or wage income immediately.
Can I still claim negative gearing on a new build?
Qualifying new builds may continue to receive more favourable negative gearing treatment from 1 July 2027. Investors should check whether the property adds new housing supply and whether it meets the final legislative definition of a new build.
What is the difference between a grandfathered property and a new build?
A grandfathered property is an existing property that may keep the current rules because it was held before the Budget night cut-off. A new build may receive favourable treatment because it adds new housing supply under the proposed rules.
Why could a tax depreciation schedule still matter?
A tax depreciation schedule can help identify eligible deductions for capital works and plant and equipment. It may also support clearer records for improvements, asset values and future tax planning.
Why could a CGT valuation matter?
A CGT valuation may help support future capital gains tax calculations, especially if investors need to establish market value, cost base details or tax positions after the proposed changes begin.
Final thoughts about negative gearing & granfathering
Negative gearing grandfathering may protect some existing property investors if the proposed 2026 Federal Budget changes become law.
Investors who held eligible established residential property before 7:30 pm AEST on 12 May 2026 may be able to keep using the current negative gearing rules for those properties.
However, future purchases may face different tax treatment. Established properties bought after the cut-off may have rental losses quarantined, while qualifying new builds may continue to receive broader negative gearing benefits.
For property investors, the main issues are timing, property type and records.
Contract dates, settlement documents, depreciation schedules, valuation evidence, improvement costs and rental loss records may all become more important as the proposed rules take shape.
Because the final rules will depend on legislation, investors should seek professional tax advice before making decisions based on negative gearing grandfathering alone.
