The RBA raised the cash rate by 25 basis points to 4.60% on 29 September 2026. The highest level since 2011 and the fourth increase this year. CBA, Westpac, NAB and ANZ are passing the full 0.25% increase on to variable home loan rates from 9 October 2026, with the RBA’s next decision scheduled for 3 November 2026.
For Australian homeowners, rate anxiety is understandably high. However, a higher-rate environment also makes it more important to understand how your loan works and how to reduce mortgage interest deliberately.
The good news is that learning how to pay off your mortgage faster is often easier than many people expect. The key is not simply paying more. It is structuring your loan and cash flow so that each dollar works harder.
Step 1: Understand how your mortgage interest is calculated
Most Australian home loans calculate interest daily on the outstanding balance, even though the interest is usually charged to your account monthly.
The basic calculation is:
Daily interest = loan balance × annual interest rate ÷ 365
This is the engine behind almost every effective home loan payoff strategy. When the balance falls sooner, or when money in an offset reduces the balance used for the calculation, less interest accumulates each day.
Check these three details on your loan
- Daily versus monthly calculation: Confirm how interest is calculated and charged.
- Genuine offset versus redraw: An offset is a separate transaction account linked to your loan. Redraw is access to eligible extra repayments already paid into the loan. They can produce similar interest savings, but access, conditions and tax treatment may differ.
- Minimum versus ahead repayments: Your lender may show that you are “ahead”, but check whether this represents a reduced principal balance or simply repayments held in advance.
Understanding these mechanics helps you decide whether an offset, extra repayments or a different loan structure will suit your situation.
For official general guidance, see MoneySmart’s guide to paying off your mortgage faster.
Step 2: Put your offset account to work properly
An offset account is a transaction account linked to your home loan. Its balance is subtracted from your mortgage balance before daily interest is calculated.
For example, if you have:
- A home loan of $600,000
- An offset balance of $30,000
- An interest rate of 6.2%
You are effectively paying interest on approximately $570,000 rather than $600,000. The initial saving is roughly $1,860 in the first year, calculated as $30,000 × 6.2%. As the saving remains in place, the benefit can compound because more of each repayment goes towards the principal.
Mortgage offset account benefits include:
- Your money remains accessible for emergencies and planned expenses.
- The offset works at your mortgage rate, rather than a separate savings rate.
- You generally avoid creating a taxable interest income event because you are reducing interest paid rather than earning bank interest.
- It can provide a practical home for your emergency buffer and pay-cycle float.
- Your salary and regular cash flow can reduce the net balance used for interest throughout the month.
One commonly missed move is to have your salary paid directly into the offset account and run household spending, bills and mortgage repayments from it. This keeps your money working against the loan for as many days as possible while maintaining normal access.
However, an offset is not automatically the best choice for everyone. Full-offset loans can have higher interest rates, annual fees or package costs. They are also generally associated with variable-rate loans. A fixed loan without an offset may impose annual extra-repayment caps or break costs, so check the product terms before making changes.
Read MoneySmart’s explanation of mortgage offset accounts before comparing features.
Step 3: Add planned extra repayments
Small, consistent additional repayments can be highly effective because they reduce the principal earlier. That means future interest is calculated on a smaller balance.
The following table is illustrative only, based on a $600,000 loan at 6.2%. Actual results will vary with lender calculations, rate changes, fees, repayment timing and your starting balance.
| Repayment approach | Approximate payoff period | Approximate time saved |
|---|---|---|
| Minimum repayments over a 30-year term | 30 years | – |
| Repay over a 25-year term | 25 years | 5 years |
| Add $300 per month | 24.5 years | 5.5 years |
| Add $500 per month | 22 years | 8 years |
| Fortnightly repayments | 26 years | 4 years |
Fortnightly repayments can help because 26 half-payments equal 13 monthly payments over a year. In effect, you make one additional full monthly repayment annually, provided the lender calculates the arrangement in this way.
Make extra repayments easier to maintain
- Automate the extra amount for the day after payday.
- Increase repayments when your income rises.
- Direct bonuses, tax refunds and pay rises towards the loan.
- Avoid reducing repayments when the interest rate falls unless your budget requires it.
- Check whether your lender applies extra payments immediately to principal.
Consistency matters more than making an ambitious payment that becomes difficult to sustain. A realistic amount maintained for years can be more valuable than a larger amount paid sporadically.
For a related discussion, see “Own Your Home Sooner: How Offset Accounts and Extra Repayments Can Slash Your Mortgage Term.”
Step 4: Choose the loan term and structure deliberately
A 30-year loan term usually produces a lower required repayment than a 25-year term, which can make cash flow easier. The trade-off is that you generally pay interest for longer.
A 25-year term may encourage faster principal reduction, but it also creates a higher contractual repayment. This is where an offset account can provide flexibility: you can aim to repay ahead without permanently committing every dollar to the loan.
You may also consider a split loan, with:
- A variable portion linked to an offset account.
- A fixed portion providing repayment certainty.
- Extra repayments directed to the portion where they produce the greatest benefit.
The right structure depends on your income stability, cash reserves, rate expectations and willingness to accept variable repayments. The lowest advertised interest rate is not automatically the best loan if it lacks the features you will actually use.
Review the full cost, including:
- Annual package fees
- Offset or redraw availability
- Extra-repayment limits
- Fixed-rate break costs
- Discharge and refinancing fees
- The loan’s comparison rate
A smart home loan is designed around your behaviour and payoff timeline, not just a headline rate.
Step 5: Review the whole picture at least once a year
Your mortgage strategy should not be set and forgotten. A yearly home loan health check can identify opportunities that are easy to miss.
Ask:
- Is your interest rate still competitive?
- Has your equity increased enough to support a restructure?
- Is cash sitting in a low-interest account instead of your offset?
- Are you using the loan features you are paying for?
- Does your current term still match your preferred payoff date?
- Would debt recycling suit your objectives better than pure debt reduction?
Debt recycling involves reducing non-deductible home debt and then borrowing separately for suitable investment purposes. It can offer potential tax benefits, but it also introduces investment risk, additional debt and record-keeping requirements.
The order in which you reduce debt matters when you hold both non-deductible home debt and investment debt. This is one area where tax and financial advice may be appropriate. You can also read “Debt Recycling vs Offset Account: Which Strategy Actually Saves You More Interest?” for a broader comparison.
How much could you actually save?
A well-structured loan, combined with consistent offset use and extra repayment habits, may bring your payoff date forward by up to 17 years compared with a standard 25-year term, depending on your circumstances and strategy.
Flexible Mortgages also highlights an important long-term cost: across a standard 25-year mortgage, the average Australian homeowner may pay two to three times the original value of the home in interest over the life of the loan.
Your result will depend on your loan size, interest rate, repayment capacity, cash flow and future rate movements. Nevertheless, even modest improvements can create substantial savings over time.
Frequently asked questions
Is an offset account better than making extra repayments?
Neither is universally better. An offset usually keeps your money accessible while reducing the balance used for interest calculations. Extra repayments reduce the loan principal directly, although access may depend on a redraw facility and lender conditions.
The better option depends on your need for flexibility, the loan’s fees, your offset balance and whether your interest rate is fixed or variable.
How much money does an offset account need to be worthwhile?
There is no universal threshold. Compare the loan’s interest-rate premium and annual fees with the interest saved by your expected average offset balance.
For example, an offset balance of $30,000 against a 6.2% loan could save approximately $1,860 per year before considering balance changes and fees. If the offset feature costs less than the resulting saving, it may be worthwhile.
Can I pay off my mortgage faster without refinancing?
Yes. You can often increase repayments, switch to fortnightly payments, use an existing offset effectively or make permitted lump-sum payments without refinancing.
Check your loan terms first, particularly if the loan is fixed or has repayment limits. Refinancing is only one possible mortgage reduction strategy.
Should I reduce my mortgage or invest instead?
Reducing non-deductible home debt provides a predictable saving broadly equal to the mortgage interest rate, without market risk. Investing may provide higher long-term returns, but returns are not guaranteed and asset values can fall while the debt remains.
The appropriate balance depends on your objectives, time horizon, tax position, risk tolerance and cash reserves. Consider qualified financial and tax advice before using investment borrowing or debt recycling.
Explore a smarter path to mortgage freedom
If you would like to understand how these strategies could apply to your own circumstances, Flexible Mortgages offers a free, no-obligation Smart Home Loan Discovery Discussion.
Based in Endeavour Hills, Victoria, we can review your current loan structure, cash flow and payoff goals to identify potential opportunities to reduce interest and own your home sooner.
There is no pressure to proceed. For a smooth, informed starting point, contact:
- Email: gary@flexiblemortgages.com.au
- Website: www.flexiblemortgages.com.au
The right strategy can support greater financial security, faster equity growth and long-term financial freedom.