How to Use a Redraw Facility vs Offset Account to Optimise Your Home Loan
When managing a home loan in Australia, two popular features often come up: redraw facilities and offset accounts. Both can help you save on interest and pay off your mortgage faster, but they work in different ways and suit different financial situations. Understanding the nuances between them is crucial for making the most of your home loan. This article provides an in-depth comparison, covering mechanics, tax implications, and practical strategies to optimise your mortgage.

Understanding the Basics: What Are Redraw Facilities and Offset Accounts?
Before diving into strategies, it’s essential to grasp how each feature functions.
What is a Redraw Facility?
A redraw facility allows you to make extra repayments on your home loan and then access those additional funds if needed. When you pay more than your minimum required repayment, the surplus is credited to your loan account. This reduces your principal balance, which in turn lowers the interest charged. However, unlike a transaction account, you don’t earn interest on these extra funds; instead, you save on interest costs because your loan balance is smaller.
For example, if you have a $500,000 loan and make an extra $10,000 repayment, your outstanding balance drops to $490,000. Interest is then calculated on this lower amount. If you later need the $10,000, you can “redraw” it from the loan, subject to the lender’s terms. Some lenders offer free redraws, while others may charge a fee or impose minimum redraw amounts.
What is an Offset Account?
An offset account is a transaction account linked to your home loan. The balance in this account is “offset” against your loan balance for interest calculation purposes. For instance, if you have a $500,000 loan and $20,000 in your offset account, you’ll only pay interest on $480,000. The funds in the offset account remain liquid and accessible, usually through a debit card, online transfers, or ATMs. This makes it a highly flexible tool for managing everyday cash flow while reducing mortgage interest.
Offset accounts can be either full (100% offset) or partial. Most competitive home loans offer 100% offset accounts, meaning the entire balance is used to reduce interest. Partial offset accounts only reduce interest by a portion of the balance, which is less beneficial.
Key Differences Between Redraw and Offset
While both features reduce interest, they differ in accessibility, tax treatment, and suitability for various goals. The table below summarises the main distinctions.
| Feature | Redraw Facility | Offset Account |
|---|---|---|
| Access to funds | May involve a request process, fees, or delays. Not instant like a transaction account. | Immediate access via debit card, transfers, etc. |
| Interest reduction | Reduces loan balance directly; interest saved on the reduced amount. | Balance offsets loan amount; interest charged on net balance. |
| Tax implications | Redrawing for investment purposes may affect deductibility of interest. See ATO rulings. | Withdrawals do not alter the loan balance, so tax deductibility of investment loan interest is preserved. |
| Fees | Often free, but some lenders charge per redraw or have limits. | May come with monthly or annual fees, though many packages waive them. |
| Best for | Disciplined savers who want to pay off the loan faster and don’t need frequent access. | Those with fluctuating cash flow, such as business owners, or investors wanting to maximise tax benefits. |
Tax Implications: A Crucial Consideration
Tax treatment is one of the most critical factors when choosing between a redraw facility and an offset account, especially for property investors.
Redraw and Tax Deductibility
According to the Australian Taxation Office (ATO), the purpose of the redrawn funds determines whether the interest remains tax-deductible. If you redraw money from an investment loan and use it for personal expenses (e.g., buying a car or holiday), the interest on that portion of the loan may no longer be deductible. This is because the loan’s purpose has been mixed. The ATO applies the “purpose test” to interest deductibility, so maintaining a clear separation between investment and personal borrowings is vital.
For example, if you have an investment property loan of $400,000 and you’ve paid an extra $50,000 into the redraw facility, the loan balance is $350,000. If you then redraw $20,000 to pay for a holiday, the ATO will apportion the interest: only interest on $330,000 (the portion still used for investment) may be deductible, while interest on the $20,000 used for personal purposes is not. This can create complex record-keeping challenges.
Offset Account and Tax Deductibility
With an offset account, the loan balance itself remains unchanged. The funds in the offset account are your own savings, not a repayment. Therefore, withdrawing money from the offset account does not affect the loan’s purpose or its tax deductibility. This makes offset accounts particularly attractive for investors who want to reduce interest on their investment loan while keeping their savings accessible without jeopardising tax benefits.
Strategies to Optimise Your Home Loan
Both redraw and offset can be powerful tools when used strategically. Here are some approaches to consider.
For Owner-Occupied Loans
If your home is not an investment property, tax deductibility of interest is generally not a concern. In this case, the choice between redraw and offset often comes down to discipline and access needs.
- Use a redraw facility if you are confident you won’t need to dip into extra repayments frequently. It can help you pay off the loan faster because the funds are less accessible, reducing temptation.
- Use an offset account if you want to keep your savings liquid for emergencies or upcoming expenses (e.g., renovations, school fees) while still reducing interest. The offset account acts as a high-interest savings account because the effective return is equal to your mortgage interest rate, tax-free.
A common strategy is to park your salary and all savings into the offset account, use a credit card for daily expenses, and pay off the card in full each month from the offset account. This maximises the time your money offsets the loan.
For Investment Property Loans
Investors should generally prioritise an offset account over a redraw facility to preserve tax deductibility. However, there are scenarios where a redraw can still be useful:
- If you have a non-deductible owner-occupied loan, you might use a redraw facility to park extra cash and then redraw it for investment purposes. By doing so, you increase the loan balance for investment, and the interest on that portion may become tax-deductible. This is known as debt recycling, but it requires careful planning and advice from a tax professional.
- Always avoid contaminating an investment loan with personal redraws. If you have both an owner-occupied and an investment loan, consider keeping an offset account against the investment loan and a redraw on the owner-occupied loan to optimise tax outcomes.
Combining Both Features
Some borrowers use both a redraw facility and an offset account simultaneously. For instance, you might have an offset account for your day-to-day savings and transaction needs, while also making extra repayments into the redraw facility as a forced savings mechanism. This dual approach can accelerate debt reduction while maintaining liquidity.
Recent Trends and Data (2023-2025)
As of 2025, Australian lenders continue to innovate with offset and redraw features. According to the Reserve Bank of Australia (RBA), as of December 2024, approximately 40% of owner-occupier home loans had an offset account attached, while redraw facilities were available on over 60% of variable-rate loans. The average offset account balance was around $35,000, providing significant interest savings for borrowers.

In 2023, the Australian Prudential Regulation Authority (APRA) noted that many borrowers were using offset accounts to build buffers against rising interest rates. With the cash rate peaking at 4.35% in November 2023 and holding through early 2025, the effective tax-free return on offset accounts has become highly attractive. Financial comparison sites like Canstar and Mozo reported in 2024 that the best offset accounts offered 100% offset with no monthly fees, often bundled with professional packages.
Potential Pitfalls to Avoid
While these features offer benefits, there are common mistakes to watch out for:
- Not checking the fine print: Some loans with offset accounts have higher interest rates or annual fees. Always compare the overall cost, not just the feature.
- Mixing purposes in a redraw: As discussed, this can lead to lost tax deductions and complex accounting.
- Over-reliance on redraw as an emergency fund: Redraw facilities are not guaranteed; lenders can freeze or deny access in certain circumstances, such as financial hardship.
- Ignoring offset account fees: If the annual fee exceeds the interest saved, the offset account may not be worthwhile. Calculate the breakeven point based on your typical balance.
How to Decide Which Is Right for You
Your choice should align with your financial goals, discipline, and tax situation. Consider the following steps:
- Assess your cash flow needs: If you need frequent access to savings, an offset account is more practical.
- Evaluate tax implications: If you have an investment property, an offset account is generally safer for preserving deductibility.
- Compare costs: Look at the interest rate, fees, and any restrictions. Sometimes a basic loan with a redraw facility may be cheaper than one with an offset account.
- Seek professional advice: A mortgage broker or tax accountant can help you model the long-term savings and tax outcomes.
FAQ
Can I have both a redraw facility and an offset account on the same loan?
Yes, many lenders allow you to have both. You can use the offset account for everyday transactions and the redraw facility for extra repayments. However, ensure you understand how each works to avoid unintended tax consequences.
Is money in a redraw facility or offset account protected if the lender fails?
Offset accounts are typically covered by the Australian Government’s Financial Claims Scheme (FCS) up to $250,000 per account holder per institution. Redraw facilities are not considered deposits and may not be covered. Instead, the funds reduce your loan balance, which is generally protected if the lender fails because your loan is an asset to the lender.
Which feature saves more interest: redraw or offset?
Both save the same amount of interest if the extra funds are equal, because they both reduce the loan balance for interest calculation. The difference lies in accessibility and tax treatment. For example, $10,000 in an offset account against a 6% loan saves $600 in interest annually, identical to an extra repayment of $10,000 into a redraw facility.
Do fixed-rate loans offer offset accounts or redraw facilities?
Some fixed-rate loans offer partial offset accounts, but full offset is less common. Redraw facilities are rarely available on fixed-rate loans due to break costs. Always check with your lender.
References
- Australian Taxation Office, “Interest Deductibility on Investment Loans”, 2024. https://www.ato.gov.au/individuals-and-families/investments-and-assets/rental-property/rental-expenses/interest-expenses
- Reserve Bank of Australia, “Statement on Monetary Policy – February 2025”, Box B: Household Balance Sheets. https://www.rba.gov.au/publications/smp/2025/feb/box-b-household-balance-sheets.html
- Canstar, “Offset Home Loans Comparison”, 2024. https://www.canstar.com.au/home-loans/offset/
- Australian Prudential Regulation Authority, “Quarterly Authorised Deposit-taking Institution Performance Statistics, December 2023”. https://www.apra.gov.au/quarterly-authorised-deposit-taking-institution-performance-statistics
- Mozo, “Best Offset Accounts 2024”, 2024. https://mozo.com.au/home-loans/offset-accounts