Offset accounts and redraw facilities both reduce the interest on your home loan. That part is simple. Where most borrowers get tripped up is understanding the structural difference between them, and why that difference matters far more than the interest savings alone.
The short version: an offset account holds your savings in a separate account linked to your loan. A redraw facility lets you access extra repayments that have already gone into the loan. Both reduce what you pay in interest. But only one keeps your money legally separate from the loan balance, and that distinction can be worth tens of thousands of dollars in tax deductions if you ever move house and turn your current property into an investment.
How offset accounts and redraw facilities work
Offset account
An offset account is a standard transaction account linked to your home loan. You can use it like any everyday bank account. You receive your salary into it, pay bills from it, transfer money in and out. The key difference is that the balance in this account is deducted from your loan balance before the lender calculates daily interest.
If you owe $500,000 and hold $40,000 in your offset account, you pay interest on $460,000. The $40,000 is still your money, sitting in your account, accessible at any time. It has not been paid into the loan.
Most lenders offer a 100% offset, meaning every dollar in the account offsets the full equivalent dollar against the loan. Some offer partial offset (only a percentage of the balance counts), which is less valuable. Always confirm you are getting a 100% offset if that is what you are comparing.
Redraw facility
A redraw facility works differently. When you pay more than the minimum repayment on your home loan, the extra amount goes directly into the loan and reduces the principal. That lowers the balance interest is charged on, just like an offset. The difference is that the money is now part of the loan, not sitting in a separate account.
If you want that money back, you "redraw" it from the loan. The lender gives you access to the extra repayments you have made above the minimum. Some lenders let you redraw online instantly. Others have minimum amounts, processing times or fees.
Here is a practical distinction: with an offset, your $40,000 in savings is still $40,000 in a bank account. With redraw, your $40,000 in extra repayments has already reduced your loan balance. It is no longer technically yours until you draw it back out.
Offset vs redraw: side-by-side comparison
The table below shows the main structural differences between offset accounts and redraw facilities in Australia.
| Feature | Offset account | Redraw facility |
|---|---|---|
| What it is | Separate transaction account linked to your loan | Feature built into your loan that lets you access extra repayments |
| How it reduces interest | Balance offsets your loan for daily interest calculation | Extra repayments reduce your loan principal directly |
| Access to funds | Full access, same as any bank account (card, BPAY, transfer) | Access via redraw request. Some lenders impose minimums or processing delays |
| Your money or the lender's? | Your money in your deposit account | Lender's funds, available to you as a loan feature |
| Can the lender restrict access? | No, standard deposit account protections apply | Yes. Some lenders can restrict or suspend redraw access |
| Tax deductibility (investment loans) | Withdrawals do not affect loan deductibility | Redraw for private use can create a mixed-purpose loan, reducing deductions |
| Available on fixed rate? | Rarely. Most fixed rate loans do not offer full offset | Some lenders allow limited redraw on fixed rate loans |
| Typical cost | Often requires a package loan with annual fee ($300 to $400/year) | Usually included free on standard variable loans |
| Best for | Investors, borrowers planning to convert to investment, high-balance savers | Owner-occupiers focused on paying down the loan with low fees |
The tax trap: why offset matters for investors
This is the section most borrowers skip and then regret. If you are buying a home you plan to live in forever, the tax difference between offset and redraw probably does not matter much. But if there is any chance you will one day move out and rent the property, offset becomes significantly more valuable.
How redraw creates a tax problem
Under ATO Taxation Ruling TR 2000/2, when you redraw from a loan, the ATO treats it as a new borrowing. The tax deductibility of the interest depends on what you use the redrawn funds for, not what the original loan was for.
So if you have an investment loan of $500,000 and you redraw $25,000 for a family holiday, you now have a mixed-purpose loan. Only $500,000 is connected to the investment purpose. The $25,000 is a personal borrowing. From that point, you can only claim interest on the investment portion, which is roughly 95% of the total. The remaining interest is not deductible.
That calculation gets more complicated with every redraw. And the contamination is permanent for the life of the loan unless you restructure it.
Why offset avoids this problem
An offset account is a deposit account, not a loan account. When you withdraw money from your offset, you are spending your own savings. You have not borrowed anything. The original loan balance remains unchanged, the purpose of the loan stays clean, and 100% of the interest remains deductible (assuming the property is genuinely available for rent).
The ATO has confirmed this position: withdrawals from an offset account do not trigger the mixed-purpose rules in TR 2000/2 because they are not borrowings. The loan's character is preserved.
Investment loan with offset account
- $500,000 investment loan stays at $500,000 on the books
- $50,000 in offset reduces interest charged daily
- You withdraw $25,000 from offset for a car purchase
- Loan balance unchanged. Still $500,000. Still 100% investment purpose
- All interest remains fully tax-deductible
- No ATO contamination risk
Investment loan with redraw facility
- $500,000 investment loan reduced to $450,000 via extra repayments
- Lower balance means less interest. Good so far
- You redraw $25,000 for a car purchase
- Loan goes back to $475,000 but now has mixed purposes
- Only $450,000 portion is deductible. The $25,000 is personal
- Interest must be apportioned for the rest of the loan's life
In practice, the difference can add up to over $15,000 in lost deductions over a decade for a typical investor, depending on the loan size, redraw amounts and marginal tax rate. That is a real cost that comes from a structural decision made years earlier.
Interest savings: how much difference does each make?
The interest savings from offset and redraw are effectively the same, assuming you hold the same balance. The mechanism is different, but the maths works out. Where the cost difference shows up is in the fees you pay to access each feature.
Example: $600,000 loan at 6.2%
These are approximate reference figures to illustrate the scale of savings. Actual results depend on your rate, balance consistency, loan term and lender.
| Offset / extra repayment balance | Approximate annual interest saved | Approximate interest saved over 30 years |
|---|---|---|
| $20,000 | ~$1,240 | ~$37,200 |
| $50,000 | ~$3,100 | ~$93,000 |
| $100,000 | ~$6,200 | ~$186,000 |
Approximate only. Based on a $600,000 variable rate loan at 6.2%, calculated daily, charged monthly, with the offset or extra repayment balance maintained consistently. Actual savings depend on rate changes, balance fluctuations and loan term remaining. These figures do not account for annual package fees.
Even modest balances make a real difference over time. $20,000 consistently held in an offset or paid as extra repayments saves roughly $1,240 per year in interest. That compounds, because every dollar you save in interest is a dollar that goes toward principal reduction instead, which shortens the loan term.
The question is not whether offset or redraw saves more interest. They save the same amount. The question is whether the annual fee for an offset account is worth paying compared to using a free redraw facility. For most borrowers with $20,000 or more in savings, the answer is yes. A $395 annual package fee is recovered many times over by the interest saved.
Costs and fees: offset vs redraw
This is where the choice gets practical. Redraw is usually free. Offset usually is not.
Most standard variable rate home loans include a redraw facility at no additional cost. Some lenders charge a small fee per redraw transaction or impose a minimum withdrawal amount (often $500), but many allow free online access with no minimum.
A full 100% offset account is most commonly available on packaged loan products. These typically come with an annual fee of $300 to $400, though some lenders bundle offset at no extra cost on their premium products. The trade-off is usually a slightly higher interest rate or compulsory package.
Some loans advertise "offset" but only offer a partial offset. This means the balance in the account only offsets a percentage (sometimes 50% or less) against the loan. A partial offset provides less benefit than a 100% offset, so always confirm the offset percentage before comparing.
Some lenders let you link more than one offset account to a single loan, which can help with budgeting. Others limit you to one. If you want to run separate offset accounts for savings, bills and expenses, check the lender's policy before signing up.
The break-even point is straightforward. If you consistently hold enough in savings that the interest saved exceeds the annual package fee, offset pays for itself. On a $600,000 loan at 6.2%, roughly $6,400 in offset savings covers a $395 annual fee. Most borrowers with an active salary account will exceed that comfortably.
Which suits your situation: offset or redraw?
There is no universal answer. The right choice depends on whether you are an owner-occupier or investor, whether you might convert your home to an investment later, and how much savings you consistently hold.
Owner-occupier, staying long term
If you are living in your home and have no plans to move, redraw is a straightforward, low-cost option. You save on interest by making extra repayments, and you can access those funds if needed. No annual fee, no complexity. If you consistently hold over $10,000 to $20,000 in savings, an offset account may still be worth the package fee because of the daily interest savings.
Owner-occupier, might rent out later
This is the scenario that trips people up. If there is any chance you will move out and rent your property, use an offset account from day one. Do not make extra repayments into the loan. Keep your savings in the offset so that if you convert to investment, the full loan balance remains deductible. Restructuring after the fact is much harder.
Property investor
Almost always offset. Investors need to keep the loan purpose clean for tax deductions. Using redraw for personal expenses on an investment loan creates a mixed-purpose loan that permanently reduces the deductible interest. Use offset for the investment loan and keep the loan untouched.
First home buyer on a tight budget
If the annual package fee is a stretch and you have minimal savings, a standard variable loan with free redraw may be more practical in the short term. As your savings grow and your plans evolve, you can refinance into a product with offset later. The key is making extra repayments in the first place, whichever feature you use.
Split loan (fixed + variable)
If you have a split loan, the offset account usually links to the variable portion only. The fixed portion typically does not benefit from offset. Some borrowers make extra repayments on the fixed portion via redraw (where allowed) and keep their savings in offset against the variable portion. Check your lender's rules on each split.
Using both on the same loan
Many lenders offer both offset and redraw on the same product. You can park your everyday savings in offset for daily interest reduction and make extra lump-sum repayments into the loan for additional principal reduction (accessible via redraw). This works well if you want structure and flexibility, but compare the total package cost.
Common offset and redraw mistakes
Most of the costly mistakes with offset and redraw are not about choosing the wrong one. They are about using the right one incorrectly, or not understanding the fine print until it is too late.
Redrawing from an investment loan for personal use
This is the most expensive mistake on this list. Every dollar you redraw from an investment loan for a holiday, car or renovation permanently contaminates the loan's tax deductibility. The damage compounds over years and cannot be undone without restructuring the entire loan.
Use an offset account for personal savings on investment loans. Keep the loan itself clean.
Assuming partial offset is the same as full offset
Some lenders offer partial offset, which means only a fraction of your account balance counts against the loan. A $50,000 balance in a 50% partial offset only saves interest on $25,000. That is a significant difference over the life of the loan.
Always confirm the offset is 100% before comparing products. If it is partial, calculate the real benefit.
Paying a package fee when your savings are too low
If you rarely hold more than a few thousand dollars in the offset, the annual package fee may cost more than the interest you save. The offset only pays for itself if you consistently maintain a meaningful balance.
Calculate whether your typical savings balance generates more interest savings than the annual fee. If not, redraw may be more cost-effective.
Not checking redraw access restrictions
Redraw is a loan feature, not a guaranteed right. Some lenders have minimum redraw amounts, processing delays, or reserve the right to restrict access. During market disruptions, some lenders temporarily froze redraw access entirely. Your money in an offset account does not carry this risk.
Read the loan terms on redraw access. If you need reliable same-day access to your savings, offset is more secure.
