Negative vs positive gearing: the 10–20 year wealth reality check

Negative gearing and positive gearing get argued about like politics.

One camp says negative gearing is a rort that only works because of tax breaks. The other says you have to negatively gear to get ahead.

Both views miss the real question:

Over 10–20 years, which mix of debt, cashflow and tax settings is most likely to grow your net worth without blowing up your household budget?

This guide answers that using plain English, worked numbers and the 2026–27 tax reforms that are already reshaping the rules.

1. Quick definition: what actually is negative vs positive gearing?

Gearing just means borrowing to invest.

• Negative gearing: after rent and expenses, your investment makes a loss before tax. You’re tipping in cash from your wages or business to hold it. Under current rules, that loss often reduces your tax bill.
• Positive gearing: after rent and expenses, your investment makes a profit before tax. It pays for itself and gives you extra income (which you pay tax on).
• Neutral (or near‑neutral) gearing: you’re roughly cashflow break‑even before tax.

Across 10–20 years, the real contest is:

1. Wealth build: How much equity and net assets do you have at the end?
2. Survivability: Can your cashflow and risk tolerance handle the bumps along the way?

The answer is almost never "negative is good" or "positive is good". It’s:

• What does the specific property look like on a cashflow and growth basis?
• How much leverage are you using?
• How do the new tax rules from 1 July 2027 change the after‑tax picture?

If you want detailed cashflow examples, pair this article with:

• Real Numbers: After‑Tax Cashflow on Investment Loans Before and After Reforms
• Cashflow Modelling for Geared Property: Real Numbers, Real Risks

2. The three levers that actually drive long‑term wealth

Forget the slogans. Over 10–20 years, your result comes from three big levers:

1. Pre‑tax investment performance

   • Rental yield
   • Capital growth
   • Holding costs (interest, strata, maintenance, etc.)

2. Leverage (LVR) and loan structure

   • How much you borrow
   • Interest‑only vs principal‑and‑interest (P&I)
   • Offset and redraw use
   • Fixed vs variable mix

3. Tax and policy settings

   • Negative gearing rules
   • Capital gains tax (CGT)
   • Ownership structure (personal, trust, SMSF, company)

Tax is changing the fastest, especially from 1 July 2027:

• The 50% CGT discount is being abolished for individuals and most trusts.
• There will be a 30% minimum tax on many capital gains for resident individuals.
• Many residential rental losses will be quarantined instead of offsetting your salary, especially on newer established properties.

Those reforms (outlined in the 2026–27 Federal Budget and Treasury Laws Amendment (Tax Reform No. 1) Bill 2026) mean you should now:

• Model investments assuming no immediate negative gearing refund, and
• Treat any tax benefit as a bonus, not the spine of your strategy.

For more detail on the rule changes, see:

• Negative gearing after the Budget: practical rules investors must know
• Why Sensible Gearing Still Works for Many Property Investors in 2026

3. How gearing really works over 10–20 years (simple maths)

Let’s strip it back to the core equation.

Wealth after 10–20 years ≈

Final property value
minus remaining loan
minus selling costs and CGT (if you sell)
minus the cash you tipped in along the way (net of tax)
plus any tax refunds you received

Negative vs positive gearing mainly affects two lines:

1. The cash you tip in along the way

   • Negative gearing: higher out‑of‑pocket early on.
   • Positive gearing: lower or even negative out‑of‑pocket.

2. Tax refunds vs tax payable each year

   • Negative gearing: often reduces your tax bill.
   • Positive gearing: usually increases your tax bill.

But the biggest swing factor over 10–20 years is usually capital growth multiplied by your leverage.

3.1 A quick leverage example (illustrative only)

Assume:

• Purchase price: $800,000 investment property
• Deposit/costs from you: $200,000 (25% including stamp duty and legals)
• Loan: $600,000 (75% LVR)

If the property grows at an average of 4% p.a. for 15 years:

• Value after 15 years ≈ $800,000 × (1.04^15) ≈ $1,440,000
• Capital gain ≈ $640,000

Ignoring costs and tax for a moment:

• You started with $200,000 of your own funds.
• You now have ~$640,000 of capital gain on top.

That’s the power of leverage: you controlled an $800k asset with $200k and captured the growth on the whole asset.

Now layer in:

• The loan balance after 15 years (depends on IO vs P&I),
• The cash you’ve tipped in or received each year, and
• Tax on the annual cashflow and on the gain if you sell.

Outcome: two investors can both own this $800k property, yet end up with very different 15‑year results depending on:

• Interest rate and loan structure, and
• How aggressively (or not) they geared and managed cashflow.

For a full 10‑year worked example, see:
Real Numbers: $750k Investment Unit at 80% LVR Over 10 Years

4. Negative vs positive gearing: cashflow and tax side‑by‑side

Let’s compare indicative scenarios. These are not live rates and are simplified to show direction.

Assumptions (for both scenarios)

• Purchase price: $800,000 established unit
• Loan: $640,000 (80% LVR)
• Interest rate: 6.5% p.a. variable (interest‑only for 5 years, then P&I)
• Other costs (rates, strata, insurance, maintenance, etc.): $10,000 p.a.
• Investor marginal tax rate: 37% + Medicare (assume 39% total for simplicity)

Then we change rent and yield to swing from negative to positive.

4.1 Year 1 cashflow snapshot

*Under current rules and assuming losses are fully deductible against salary; after 1 July 2027 many such losses will be quarantined for newer established properties.

Key points:

• The pre‑tax difference is big: −$19,600 vs −$7,600.
• The after‑tax difference narrows because the negative scenario gets a refund and the positive one pays tax.
• Both are still out‑of‑pocket before and after tax—just different amounts.

When you extend this over 10–20 years and allow for rents, rates and interest to change, the picture can flip multiple times.

That’s why you need modelling, not slogans. Use the frameworks in:

• Cashflow Modelling for Geared Property: Real Numbers, Real Risks
• Real Numbers: After‑Tax Cashflow on Investment Loans Before and After Reforms

Leverage multiplies both gains and risks, so cashflow resilience matters as much as potential upside.

5. The 2026–27 reforms: why the game is shifting

From 1 July 2027, three changes alter how negative vs positive gearing affects long‑term wealth:

1. Negative gearing quarantining
   Many residential rental losses on established properties purchased after 12 May 2026 will no longer offset your wage income. They’ll be quarantined to future rental profits or capital gains.

2. CGT discount removal
   The familiar 50% CGT discount for individuals and most trusts will be abolished. Instead, cost bases are indexed to CPI and there’s a minimum 30% tax on capital gains accruing after 1 July 2027 unless an exception applies.

3. More complexity for trusts
   Discretionary trust losses are more likely to be trapped in the trust, and there’s a minimum tax on some distributions.

What this means in practice:

• Aggressive negative gearing on established properties becomes less attractive as a core strategy.
• High‑growth, high‑leverage plays still might work—but they rely much more heavily on strong pre‑tax growth and your cashflow capacity, not on tax refunds.
• Sensible levels of positive or near‑neutral gearing on quality assets can look better on a risk‑adjusted basis over 10–20 years.

For a full rundown of the post‑2027 world, see:
Negative gearing after the Budget: practical rules investors must know