Before 12 May 2026, the choice between buying new versus established investment property was largely about cashflow timing and preference. New builds offered depreciation benefits and tenant appeal. Established properties offered known history and immediate yield.
Budget 2026 has fundamentally changed this equation. The tax treatment of new builds and established property is now materially different — and the numbers favour new builds by a measurable margin.
The New Tax Reality
From 1 July 2027, here is how the two property types compare:
New builds:
- Full negative gearing maintained against all income including wages
- CGT: investor can choose either the old 50% discount method OR the new 30% flat-rate-on-real-gains method — whichever produces the lower tax
- Full depreciation deductions on building and fixtures
Established properties purchased after 12 May 2026:
- Negative gearing losses can only be offset against rental income, not wages
- CGT: 30% flat rate on real gain only (no option to use the old 50% discount)
- Depreciation limited to plant and equipment only (no building depreciation)
The asymmetry is now significant.
Modelling the Difference
Let's run a side-by-side comparison. Same investor, same purchase price, similar suburb. The only difference is new build versus established.
Assumptions:
- Purchase price: $650,000
- Investor income: $120,000/year (37% marginal rate)
- Annual rent: $28,000 ($540/week)
- Annual expenses (mortgage, fees, rates, insurance): $42,000
- Annual rental loss: $14,000
Negative Gearing Comparison
| | New Build | Established (post-Budget) | |---|---|---| | Annual rental loss | $14,000 | $14,000 | | Deductible against wages? | Yes — full | No | | Annual tax saving (37% rate) | $5,180 | $0 | | Weekly cashflow advantage | +$100/week | Nil |
The new build investor saves $5,180/year in tax the established investor does not. On a weekly basis, that is approximately $100/week better after-tax position from the same property at the same price.
CGT Comparison (Selling after 7 years)
Assume $200,000 capital gain, inflation averages 3% over the hold period.
| | New Build | Established | |---|---|---| | Nominal gain | $200,000 | $200,000 | | Inflation adjustment (3% × 7yr) | ~$65,000 | ~$65,000 | | Real gain | $135,000 | $135,000 | | Old system: 50% discount, 37% rate | $37,000 tax | N/A | | New system: 30% of real gain | $40,500 tax | $40,500 tax | | Investor can choose | Yes — old system wins | No — stuck with new | | CGT payable | $37,000 | $40,500 | | CGT difference | | $3,500 more |
Combined over the 7-year hold: new build investor pays $5,180/year less tax (×7 = $36,260) plus $3,500 less CGT at exit = approximately $39,760 total advantage on the same $650,000 property.
Where New Builds Make Sense
The tax advantage of new builds doesn't apply equally across all markets. A new build in a high-vacancy, oversupplied suburb is still a bad investment. The tax treatment improves the economics — it doesn't rescue fundamentally weak markets.
New builds tend to work best where:
- Vacancy rates are below 1.5% — tight rental markets sustain rents regardless of property type
- Population growth is positive — demand for new housing is structurally supported
- Infrastructure investment is active — new suburbs with improving amenity attract tenants and future buyers
- Developer track record is strong — new builds carry construction and developer risk that must be assessed
Markets like Toowoomba (QLD), outer Brisbane corridors, South East Perth, and growth zones in Adelaide's northern suburbs have both the vacancy fundamentals and the new supply pipeline that suits this strategy.
The Risks of New Builds
The tax advantage is real, but new builds carry specific risks that established properties don't:
1. Construction risk. Until the property is built and titled, you don't own it in the traditional sense. Developer insolvency, delays, and specification changes are all real possibilities.
2. Valuation risk. New builds sometimes appraise below purchase price at completion — particularly if market conditions change during construction or if the developer marketed at a premium. Always get an independent valuation before settling.
3. Oversupply risk. Some new build corridors attract clusters of investment properties that compete for the same tenants. Check vacancy rates and rental yield data for the specific suburb and postcode, not just the broader region.
4. Depreciation timing. The tax benefits of depreciation front-load in the early years and reduce over time. Model the cashflow over the full hold period, not just year one.
5. Tenant profile. New builds tend to attract tenants who prioritise modern features. If the suburb doesn't attract that demographic, vacancy periods can be longer.
The Case for Established Property
Established property post-Budget is not necessarily a bad investment. It requires a different lens.
The key question is: does the deal work without the negative gearing subsidy?
If you're targeting high-yield established markets — regional Queensland, parts of Western Australia, outer Adelaide — the cashflow can work even without wage deductibility. A property yielding 6.5% on a $500,000 purchase in a tight vacancy market may generate positive cashflow before and after the tax change.
The investors who will struggle are those who were relying on negative gearing to subsidise below-market yields in expensive markets. Sydney and Melbourne established property at sub-3% yields simply doesn't work at 4.35% interest rates without the tax offset.
PropTime's Recommendation
The data-backed answer is: start with the market, then choose the property type.
Use the Strategy Selector to identify suburbs with the strongest demand fundamentals — low vacancy, rising rents, positive population growth. Then, within those markets, compare new build and established options with the Budget 2026 calculators.
In most strong markets, you'll find that the tax advantage of new builds makes them the superior choice on a post-tax basis. But the market fundamentals matter more than the property type — a new build in a weak market is still worse than established in a strong one.
PropTime currently scores 690 suburbs. The top quartile by score — 80+ — are the markets where either property type is likely to perform. The key questions then become specific to your income, deposit, and strategy.
Quick Reference Table
| Factor | New Build | Established (post-Budget) | |---|---|---| | Negative gearing vs wages | ✓ Full | ✗ Capped | | CGT treatment | ✓ Choose best method | 30% on real gain only | | Building depreciation | ✓ Full | ✗ Not available | | Construction risk | Higher | Lower | | Immediate rental income | After completion | Day 1 | | Established vacancy data | Limited | Available | | Price certainty | Lower | Higher |
This article provides general information only and does not constitute financial or tax advice. Always consult a qualified adviser before making investment decisions.