Part 2: The 10-Year Retirement Runway - How to Pay Off Your Mortgage Before Retirement

In Part 1 of this series, we showed you how to supercharge your superannuation and find your hidden catch-up cap space. Today we tackle the other side of the ledger: the roof over your head.

If you're 50 to 60, there's a good chance your mortgage is your single biggest ongoing expense and your single biggest opportunity. Every dollar you free up from non-deductible mortgage interest is a dollar you get to redirect toward the retirement you actually want. The goal of this instalment is simple: engineer your mortgage down to $0, on purpose, before your retirement date.

Why the Mortgage Comes Before (Or Alongside) Super

It might seem counterintuitive to focus on debt reduction in a series about building wealth. But non-deductible mortgage interest is one of the few guaranteed returns available to you, pay down debt costing you ~6%, and you've effectively earned a guaranteed, tax-free 6% return. For most pre-retirees, entering retirement mortgage-free is what actually makes the numbers work: a lower cost of living in retirement means a smaller nest egg has to work a lot less hard.

That's why this strategy isn't about choosing between your mortgage and your super. It's about structuring your cashflow so both are working for you at the same time.

The Mortgage Payoff Framework

Here's the core framework we use with clients to reduce non-deductible mortgage debt faster, without starving day-to-day lifestyle:

1. Review  your loan structure first. Confirm it actually supports offset,  redraw, and extra repayments without penalty. This is also the moment to check whether a refinance could secure a cheaper interest rate. Even a modest rate reduction compounds significantly over a 10-year runway, and it's the foundation everything else in this framework is built on.
2. Set up an offset account structure and direct all income into it, so interest on your home loan is calculated daily on a lower balance. If offset is not available a similar strategy can be implemented with a redraw facility.
3. Switch to fortnightly repayments. Because there are 26 fortnights in a year (not 24), this alone delivers the equivalent of one extra full monthly repayment annually, with no change to your budget.
4. Increase your regular repayments incrementally, and direct part of your surplus cash each month above the minimum required. Every additional amount above the minimum compounds meaningfully over a 10-year runway.
5. Direct lump sums straight to the offset account - bonuses, tax refunds, inheritances, and other windfalls, as they arrive. These larger additional repayments are also an opportunity to implement debt recycling, which we will discuss in further detail in our next instalment of this blog series.
6. [Where applicable] Apply for a PAYG Withholding Variation. If you hold an investment property or share portfolio that's negatively geared and you're receiving a decent-sized tax return each year, a withholding variation lets you access that benefit throughout the year via your regular pay, rather than waiting up to 12 months to get it back as a lump sum at tax time. This can make a considerable difference, as additional cashflow can be applied each pay cycle to your mortgage rather than waiting a year until your tax return is complete.

Next Steps: Beyond the Framework

Once the six steps above are in place and running on autopilot, there's a broader picture to consider alongside them:

• Build a parallel wealth reserve (super, investment bonds, share portfolio) alongside your debt reduction, so you're not putting all your eggs in one basket.
• Consider debt recycling, where appropriate, to convert non-deductible debt into deductible debt. This is a separate, fully documented strategy in its own right. This works especially well in conjunction with step 5 above when lump sums are put into the offset/loan balance.
• Weigh investment versus extra repayments for any surplus cashflow, based on your risk profile and your loan's interest rate.
• Coordinate this cashflow plan with your broader lending, tax, super, and investment position, rather than running it in isolation.

Stay tuned for the next instalment of this blog series to learn more about building parallel wealthbuilding strategies.

 Building a Mortgage Offset Account Strategy That Runs Itself

The framework above only works if the cashflow behind it is automated. This is where a proper mortgage offset account strategy earns its keep. It involves a small number of linked offset accounts, each with one job,so your money moves on autopilot instead of relying on willpower.

Here's how it typically looks in practice. Take a hypothetical couple, Dave and Michelle, both 54, with a $600,000 mortgage and 10 years until they plan to retire:

• Hub  Account (joint offset): All income: salary, business profit, investment income lands here first. It covers fixed expenses and the mortgage repayment and holds a maintained buffer of around $10,000 for cashflow variability. Both partners hold a debit card linked to this account.
• Spending Accounts (individual offsets): Dave and Michelle each get their own account for discretionary spending, funded by a weekly transfer from the Hub, say $400 each.
• Bills Account (offset): Funded by a monthly transfer, building toward quarterly and annual bills like insurance and rates.
• Holiday Account (offset): Funded monthly, building toward travel and lifestyle spending.
• Surplus: Anything left over once the Hub buffer is maintained is directed to additional debt reduction or investment, depending on their goals and risk profile.

Every one of these is an offset account, not aseparate savings account, which matters more than it might seem.

Offset Account vs Redraw Facility

People often ask whether it's better to build up offset savings or simply make extra repayments and redraw if needed. The practical difference: an offset account keeps your funds fully accessible while still reducing the interest calculated on your loan daily. A redraw facility can achieve something similar, but access to those funds isn't guaranteed and it depends on your lender's terms. Some lenders restrict or limit redraw amounts or restrict direct debits. For most pre-retirees who want both flexibility and discipline, a linked offset structure is the more reliable tool.

Fortnightly vs Monthly Mortgage Repayments

It's a small administrative switch with an outsized effect. Paid monthly, you make 12 repayments a year. Paid fortnightly at half the monthly amount, you make 26 fortnightly repayments. This is the equivalent of 13 monthly repayments. That one extra repayment goes straight to reducing your principal, which can shave years off a 25 or 30-year loan termwhen maintained consistently over a decade.

Why Not Just Use a High-Interest Savings Account?

It's a fair question, and one we work through with every client. A standard high-interest savings account looks attractive on paper, but the interest you earn is assessable income, taxed at your marginal rate. Money sitting in an offset account, by contrast, reduces non-deductible interest without generating any extra taxable income. This is a more tax-effective outcome for most pre-retirees. On top of this, the interest rate on your home loan is also likely to be higher that of a high interest savings account. For the best return on every dollar of savings, it is likely that the money will be better in an offset account. Note that high interest savings accounts do have a benefit, if the home loan is fully offset.

Things You Should Know

• Multiple linked offset accounts may attract account-keeping fees, depending on your lender and loan product. These should be factored into the overall cost-benefit before you set the structure up.
• Not every lender offers multiple linked offsets on the one loan; you may need to confirm what your current product supports or consider refinancing.
• The buffer held in your Hub Account is there to manage cashflow variability, not to be drawn down for everyday discretionary spending.
• This strategy should be reviewed regularly alongside your broader debt, tax, and investment position, particularly if your income, expenses, or lending arrangements change.
• Interest rates, offset arrangements, and fee structures vary and change over time, and should be confirmed with your lender before implementation.

Frequently Asked Questions

How can I pay off my mortgage before I retire? The most reliable approach combines automated cashflow (an offset account structure), an extra annual repayment via fortnightly payments, incrementalincreases to your regular repayment, and directing lump sums straight to youroffset balance, coordinated with your broader super and investment strategy rather than run in isolation.

What is a mortgage offset account and how does it work? An offset account is a linked transaction or savings account where the balance is used to reduce the amount of interest charged on your home loan. Interest is typically calculated daily on your loan balance minus your offset balance, so every dollar sitting in the offset account is effectively earning a return equal to your mortgage interest rate, tax-free.

Is it better to pay extra off my mortgage or invest the surplus? It depends on your interest rate, your risk profile, and your time frame. Paying down non-deductible debt delivers a guaranteed, tax-free return equal to your mortgage rate. Investing offers the potential for a higher return, but with risk and volatility attached. Most pre-retirees benefit from ablended approach. This is where personal advice matters most, since the right balance depends on your full financial picture.

The Next Step on Your Runway

Structuring your cashflow is the easy part on paper. Building a structure that survives real life, a variable income, and ten years of changing circumstances is where the value of advice shows up.

In Part 3 of the 10-Year Runway, we'll look at how toput your freed-up cashflow to work, building parallel investments: investment accounts, investment property, and investment bonds alongside your debt reduction.

Want help mapping out your own mortgage payoff timeline? Contact our team today, or book a meeting here.

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Disclaimer: This article contains general advice only. It has been prepared without considering your personal objectives, financial situation, or needs. Before acting on any information in this article, you should consider its appropriateness having regard to your personal objectives, financial situation, and needs, and seek professional advice from a qualified financial adviser.

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