Downsizing, CGT and Debt: A Practical Pre‑Retirement Playbook

You can use downsizing contributions, the main residence CGT exemption and deliberate debt reduction together to turn a property‑heavy balance sheet into reliable retirement income. The key is to map your loans, properties and tax position before you sell, then decide how much of the sale proceeds should clear debt, how much should go into super, and what (if anything) you keep outside super for flexibility.

In this guide we’ll step through how the downsizer rules work, how the main residence CGT exemption interacts with the new capital gains tax settings from 1 July 2027, and how to choose between deleveraging, keeping some gearing, or staying invested in property.

Coordinating home sale proceeds across super contributions and debt reduction creates a more stable retirement income base.

1. Big picture: what you’re really trying to optimise

For most pre‑retirees and downsizers, the real goal is not “pay the least tax” or “have zero debt”. It’s:

1. Sustainable, low‑stress income in retirement – enough after‑tax cashflow to live the way you want, without lying awake over interest rates.
2. Manageable risk – so one rate hike, vacancy or business shock doesn’t force a fire sale.
3. Flexibility – to help kids, fund aged care, or pivot if rules change again.

To get there, you need to coordinate three moving parts:

• Capital gains tax (CGT) – especially the main residence exemption and new 2027 rules.
• Superannuation contributions – including downsizer contributions that bypass normal caps.
• Debt levels and loan structures – home, investment and business lending.

If you haven’t already, it’s worth reading the broader property‑heavy pre‑retirement strategy piece: Smart moves for pre‑retiree property investors under new tax rules. This article zooms in on one specific play: selling or downsizing your home and redeploying the proceeds.

2. Key concepts in plain English

2.1 Downsizer contributions – what they really are

A downsizer contribution is a special one‑off contribution you can make to super using the proceeds from selling your home. Key points (at time of writing):

• Up to $300,000 per person ($600,000 per couple) regardless of standard contribution caps.
• You must be at least 55 at the time of contribution (check current age settings when you act).
• The property must generally have been your main residence (or at least eligible for the exemption) for part of the ownership period.
• You must contribute within 90 days of settlement (some extensions possible from the ATO).

The contribution itself isn’t tax‑deductible, but once inside super, earnings are taxed at up to 15% in accumulation, and often 0% in pension phase, which is where the long‑term tax benefit lives.

2.2 Main residence CGT exemption – why your home is special

Generally, selling your main residence in Australia triggers no CGT if:

• It’s been your main residence for the entire ownership period, and
• The land is 2 hectares or less, and
• You haven’t used it mainly to produce assessable income.

If it’s been partly rented out or used as a business base, you can get a partial exemption.

With the 2026–27 reforms, from 1 July 2027 most individuals and trusts lose the 50% CGT discount and instead get indexation and minimum tax settings. But the main residence exemption remains incredibly valuable – often the last big tax‑free card you can play. (See Capital gains tax, your home and geared property under new rules for a deeper dive.)

2.3 Debt – why structure matters as much as size

Not all debt is equal:

• Home loan (non‑deductible) – interest is usually not tax‑deductible because loan purpose is personal housing, regardless of which entity is on title. (This follows from the rule that interest deductibility follows purpose, not security.)
• Investment property loan (usually deductible) – interest is often deductible where the borrowing is used to produce assessable income.
• Business/working capital loans (usually deductible) – interest is generally deductible for business purposes.

From a purely tax perspective, you want less non‑deductible debt and, if you’re comfortable with risk, you can sometimes justify keeping some deductible investment or business debt.

But tax is only one lens. You also have to weigh:

• Interest rate differentials (home vs investment vs business loans).
• Cashflow volatility (e.g. rent, business profit, vacancy risk).
• Your realistic retirement spending and risk tolerance.

3. How these three levers interact

3.1 The intuitive but incomplete plan

A common first thought is:

“We’ll sell the big house, clear all debt, and put whatever’s left into super.”

Sometimes that’s exactly right. But it can be sub‑optimal if:

• You wipe all your cheap‑ish, deductible investment debt instead of non‑deductible home or business debt.
• You miss the chance to use the downsizer contribution because of timing or age.
• You accidentally boost assets in the wrong place for Age Pension tests.

3.2 A better approach: sequence and structure

A more robust plan usually runs in this order:

1. Map everything: properties, loans, super balances, ages, entity structures, and whether each property is main residence, investment or business.
2. Clarify your 10‑year picture: where you’ll live, whether you want to keep any investment property, and when you plan to partially or fully retire.
3. Decide what to sell, and when: factoring in CGT, new 2027 rules, and property market realities.
4. Prioritise which debts to clear: non‑deductible first, subject to rates and risk.
5. Plan contributions to super: downsizer vs non‑concessional and timing of pension phase.
6. Rebuild your loan structure: keep remaining debt cleanly split between home, investment and business purposes.

You might find it helpful to cross‑reference long‑term planning guides like Designing a 10‑Year Property and Mortgage Roadmap in Sydney’s East or Turn Your Mascot Home Loan into a 10‑Year Property Strategy for how to think about the planning horizon.