How extra repayments shave years off your Australian home loan

How small extra payments create big savings in 2026

With the RBA cash rate sitting at 4.35% and lowest variable rates hovering around 5.69% (Australian Prudential Regulation Authority 3% serviceability buffer), every dollar you put towards your mortgage matters more than ever. A $600,000 loan at 5.99% over 30 years carries a required monthly repayment of roughly $3,598. Add just $100 per month – that’s $25 a week, less than a takeaway dinner – and you will save approximately $34,000 in interest while cutting over 4 years off the loan term. That is real money you can redirect to investments, travel, or simply financial freedom sooner.

The illustration above uses a typical 2026 rate for owner-occupiers paying principal and interest. Lower your rate or top up your extra payments, and the savings multiply. This article explains how extra repayments work, the numbers behind them, and how to choose the best method – redraw, offset, or lump sum – so you can tailor a strategy to your own loan size and cash flow.

Why extra repayments accelerate your mortgage

Every home loan calculates interest daily on the outstanding balance. When you make a repayment larger than the minimum, the surplus reduces the principal immediately. Because interest is a percentage of the principal, lowering that balance lowers the total interest charged over the life of the loan – and pushes the loan’s maturity date closer.

At 5.99% per annum, a $600,000 loan paid over 30 years costs about $695,000 in interest. By adding $100 every month, you:

• Reduce the principal faster after each payment.
• Decrease the portion of future payments that goes to interest.
• Increase the proportion hitting the principal with every subsequent payment.

Within a few years, the compounding effect becomes dramatic. The $34,000 saving quoted earlier assumes no change in the interest rate over the loan term. If rates drop and you refinance, you can save even more; if they rise, the value of extra repayments increases because you are reducing a more expensive debt.

Example scenarios: how much you save at different loan sizes

The numbers vary depending on your loan size, interest rate, and how much extra you can contribute. Below are three common 2026 scenarios using a rate of 5.99% and a 30-year term. Each shows the total interest saved and years shaved off by paying an extra $200 per month (not just $100) to illustrate the multiplying effect.

• $400,000 loan: Required monthly payment $2,398. Add $200 per month → total repayment $2,598. Interest saved: $58,000. Loan term reduced by 6 years 2 months.

• $600,000 loan: Required $3,598. Add $200 → $3,798. Interest saved: $87,000. Term cut by 6 years 5 months.

• $800,000 loan: Required $4,797. Add $200 → $4,997. Interest saved: $116,000. Term cut by 6 years 8 months.

Doubling the extra payment to $400 per month on a $600,000 loan would save roughly $158,000 in interest and cut the term by over 10 years. The key takeaway: even modest, consistent additional payments produce outsized results because of the time value of money and compound interest working in your favour.

The three tools for making extra repayments in 2026

Extra repayments are only effective if you can access them when needed and manage them wisely. In 2026, Australian borrowers have three main options:

· Redraw facility: Most variable and some fixed-rate loans allow redraw. You pay extra into the loan, and you can withdraw that money later (subject to minimum balances and fees). Redraw reduces your loan principal immediately, so interest savings start straight away. However, access is not automatic – you may need to apply online or via a branch, and some lenders limit redraws to a maximum amount per day.

· Offset account: A transactional savings account linked to your mortgage. The balance offsets the loan principal before interest is calculated. You earn no interest on the offset account itself, but you effectively pay less interest on the loan. Offset offers maximum flexibility – you can deposit and withdraw as often as you like without reducing your available redraw. For borrowers with irregular income or big expenses (e.g., renovations, medical bills), offset is often preferred. The downside: offset accounts typically come with a monthly fee ($5–$15) and higher interest rates than basic variable loans.

· Lump-sum repayment: An occasional large payment (e.g., bonus, tax refund, inheritance) applied directly to the loan principal. This works like extra repayments in bulk. Most lenders allow lump sums without penalty on variable or qualifying fixed-rate loans (check your product disclosure statement for caps). A single $10,000 lump sum on a $600,000 loan at 5.99% saves $10,300 in interest and cuts the term by 7 months.

Which option is best depends on your financial habits and certainty of cash flow. For most borrowers, an offset account provides the best balance of accessibility and interest savings, especially if you have a buffer for emergencies. Redraw is almost as good but requires discipline not to treat the loan as a spending account.

Using the First Home Buyer Guarantee to start early with extra repayments

From July 2026, the expanded First Home Buyer Guarantee (administered by Housing Australia) allows eligible first home buyers to purchase with a 5% deposit and no lenders mortgage insurance. The property price caps are:

• Sydney: $1.5 million
• Melbourne: $950,000
• Brisbane: $1 million
• Perth: $850,000

There is no income cap under the 2026 scheme. This means more Australians can enter the market sooner. If you use the Guarantee, you will likely pay a higher interest rate (around 5.99%–6.49%) compared to a standard 20%-deposit loan. That makes extra repayments even more valuable. For a $900,000 loan (typical Melbourne apartment with 5% deposit), adding $100 per month saves $46,000 in interest and cuts 4.5 years off the loan. The earlier you start extra payments, the more you benefit from compounding.

APRA’s lending constraints and how they affect your ability to pay extra

Since February 2026, the Australian Prudential Regulation Authority requires lenders to apply a 3% serviceability buffer and cap debt-to-income ratios at 6 times for new borrowers. This means your maximum borrowing capacity is lower than in previous years. However, once you have a loan, making extra repayments does not breach any lending cap – you are simply paying down existing debt faster. In fact, reducing your loan faster improves your debt-to-income ratio and makes refinancing easier when you want a better rate.

If you are struggling to qualify for a new loan due to the DTI cap, focus on making even small extra repayments on your current loan. Every dollar reduces your debt-to-income ratio and strengthens your future borrowing position.

Common mistakes to avoid

• Not checking your loan’s extra repayment limit. Some fixed-rate loans allow only $10,000–$20,000 extra per year without penalty. Exceeding that incurs break costs. Always confirm with your lender.

• Using redraw for everyday spending. Treat your redraw facility as an emergency buffer, not a second transaction account. Dipping into redraw reduces your principal again and can extend your loan term.

• Choosing offset when you have a low balance. If you maintain less than $5,000 in your offset account consistently, the monthly fee may outweigh the interest savings. Calculate your break-even offset balance.

• Stopping extra payments after a rate cut. Lower rates reduce the absolute benefit of extra repayments, but the relative advantage remains. Keep paying extra unless you have a better use for the cash (e.g., paying off high-interest debt).

How to start extra repayments today

1. Check your loan product: Log into your lender’s portal or call them to confirm you have a redraw or offset facility. Ask about any maximum extra repayment limits, especially if you are on a fixed rate.

2. Set up an automatic transfer: Schedule a recurring payment of $100 from your everyday account to your mortgage (or offset account) on the same day as your salary deposit. Automating ensures you never forget.

3. Review your budget for additional cash: Tax refunds, work bonuses, or side-hustle income can be directed as lump sums. Even one $2,000 annual payment saves $2,200 in interest on a $600,000 loan.

4. Use our interactive calculator: Visit our extra repayments calculator to model your own loan size, rate, and extra payment amount. You can see exactly when your loan would end and how much interest you would save.

5. Enable the calculator widget: For a live estimate directly on your device, click the data-open-widget CTA below to open a mini calculator that works with your current loan details.

FAQ: Extra repayments on Australian home loans – 2026 edition

Q: How much interest can I save by adding $100/month to a $600,000 loan at 5.99%?
A: Using a 30-year term, you save $34,000 in total interest and your loan finishes 4 years and 1 month earlier. The exact figure depends on your rate and term, but the principle holds.

Q: I have a $750,000 loan at a variable rate of 6.19%. If I add $200 per month, what are the savings?
A: Your required monthly payment is about $4,584. With an extra $200, total payment $4,784. Interest saved is approximately $130,000, and the loan term reduces by 7 years 3 months.

Q: Should I put extra cash into my redraw or my offset account?
A: If your offset account has no monthly fee and your redraw is free, either works. For maximum flexibility (withdrawals without impacting your loan limit), choose offset. For pure principal reduction and no temptation to spend, choose redraw. Always compare the interest rates – offset accounts often carry a higher base rate.

Q: Do extra repayments affect my tax deduction if I have an investment property?
A: Generally, no. Extra repayments reduce the principal of a loan used for investment purposes. The interest on the remaining loan remains deductible as long as the loan is used for income-producing purposes. However, redrawing borrowed money for personal use can partially reduce deductibility. Consult a tax professional for your specific situation.

Q: Can I still make extra repayments if I’m on a fixed rate in 2026?
A: Yes, most fixed-rate loans allow up to $20,000 extra per year without penalty. Exceeding that cap may incur break costs equal to the lender’s loss of interest. Check your loan contract for the exact limit.

Sources

• Australian Prudential Regulation Authority. “APRA updates benchmarking guidance for home loan lending.” February 2026.
• Reserve Bank of