Offset Account vs Redraw Facility: What's the Difference and Which Saves More?

What Is an Offset Account?

An offset account is a regular transaction account that is linked to your home loan. The balance sitting in that account is "offset" against your outstanding loan balance before the bank calculates your daily interest.

So if you have a $600,000 mortgage and $50,000 sitting in your offset account, you are only charged interest on $550,000. The $50,000 does not earn interest in the traditional sense — instead, it saves you interest at your mortgage rate, which is typically far higher than any savings account rate.

The money in your offset account is always yours. You can spend it at any time using a debit card, BPAY, or bank transfer. Your lender does not need to approve any withdrawal, and there is no application process. You simply use it like a regular bank account — because it is one.

What Is a Redraw Facility?

A redraw facility is different. It is not a separate account. Instead, it is a feature attached to the loan itself that lets you access any extra repayments you have made above your minimum scheduled amount.

For example, if your minimum monthly repayment is $3,000 and you have been paying $3,500 each month for two years, you have built up $12,000 in extra repayments. With a redraw facility, you can pull that $12,000 back out if you need it. But it is not your own separate account — it is money you have physically paid down on the loan, and accessing it means drawing that balance back up.

The interest savings work the same way as with an offset account while the extra money is sitting in the loan. But the access conditions are very different.

The Core Mechanics: How Each One Saves You Money

Both features reduce the daily loan balance on which interest is calculated. Since most Australian home loans calculate interest daily and charge it monthly, even a modest amount sitting in an offset account or paid ahead via redraw can produce meaningful savings over time.

Here is a worked example. Suppose you have a $600,000 home loan at 6.24% per annum with a 30-year term, and you consistently keep $30,000 in an offset account (or ahead in your redraw). Without any offset or extra repayments, your total interest over 30 years would be approximately $789,000. With $30,000 consistently working against the loan, you would save roughly $80,000 to $90,000 in interest and cut around three to four years off your loan term — depending on when you start and how consistently you maintain that balance.

Use CalcPhi's free Offset Account Calculator to see precisely how much your current or planned offset balance could save you over the life of your loan.

Key Differences You Need to Know

Access to Your Money

This is the most important practical difference. Money in an offset account is yours, full stop. There is no red tape, no approval process, and no limit on how many times you can withdraw. You can transfer it out tonight if you want.

Money in a redraw facility is also technically yours, but your lender controls the access conditions. Some lenders restrict redraws to a minimum amount (often $500 to $1,000). Some charge a fee per redraw, particularly on fixed-rate loans. A small number of lenders have historically changed redraw conditions mid-loan — including reducing available balances during periods of financial stress, as seen during the early COVID period when some banks quietly reduced accessible redraw balances. This is rare, but it has happened, and it is worth understanding the risk.

Tax Implications for Investors

This difference is critical if you ever plan to convert your home into an investment property, or if you already have investment intentions.

Interest on a loan used to produce income (such as rent from an investment property) is generally tax-deductible. But if you redraw from a loan that was previously used for your home and use that money for personal spending, the ATO may treat the new redrawn portion as non-deductible — because its purpose has shifted. This can create a messy loan with mixed purposes that is very difficult to untangle come tax time.

An offset account sidesteps this entirely. Your loan balance never changes — you are simply parking cash next to it. The loan purpose stays clean and intact. If you later turn that property into a rental, the full original loan balance remains deductible (assuming you have not physically redrawn anything for personal use).

This distinction is not theoretical — it regularly catches property investors off guard. If your long-term plan includes any investment property strategy, an offset account is almost always the cleaner choice.

Fees and Loan Types

Offset accounts usually come packaged with professional or premium home loan products. These often carry an annual package fee — typically between $300 and $400 per year — in exchange for the offset account, a discounted interest rate, and other features. On a large loan, that fee is easily justified by the interest savings. On a smaller loan, it is worth running the numbers.

Redraw facilities are more commonly available on basic variable loans with no annual fee. If your loan is under $300,000 and you plan to make only modest extra repayments, a basic loan with redraw and a lower rate might actually save you more overall than a packaged loan with an offset account.

Fixed-rate loans are also worth flagging here. Most fixed loans in Australia do not offer an offset account, or offer only a partial offset on a split loan. Redraw may be available on fixed loans but often comes with strict caps on how much you can redraw without incurring break costs. Always check the product disclosure statement carefully before assuming either feature applies to a fixed rate.

Which One Actually Saves More?

In pure interest-saving terms, a fully functioning 100% offset account and a redraw facility with the same amount in it will save you exactly the same amount of interest. The maths is identical — both reduce your daily outstanding balance by the same figure.

So the winner is not determined by the mathematics. It is determined by your behaviour, your goals, and your tax situation.

You will likely save more with an offset account if you tend to park salary, bonuses, and savings there and let the balance grow over time. The ease of access also means you are less likely to feel the urge to keep a separate emergency fund in a lower-rate savings account — your offset account can serve both purposes at once.

You will likely save more with redraw if you are disciplined about not touching extra repayments, you have a basic variable loan with a lower rate, and you have no investment property ambitions that would create tax complexity.

CalcPhi's Extra Repayment Calculator can help you model how making additional payments — whether parked in offset or made directly to the loan — affects your total interest and loan term.

A Practical Scenario: Sarah's Choice

Sarah is 34, earns $110,000, and has just bought a home in Brisbane for $750,000 with a $600,000 loan at 6.24% over 30 years. She has $40,000 in savings and receives quarterly bonuses averaging $8,000.

If Sarah uses a redraw facility and keeps paying the extra $8,000 each quarter, she will gradually reduce her loan balance and save a significant amount in interest. But if she later decides to move to a second property and rent out her Brisbane home, any money she redraws for personal expenses will compromise the deductibility of that portion of the loan.

If instead Sarah keeps her $40,000 in a linked offset account and directs each bonus there too, her loan balance stays at $600,000 but interest is calculated on $600,000 minus whatever is in the offset. Her loan purpose stays clean. Her accessible cash is always available for emergencies, renovations, or investment opportunities. And her deductibility is protected if the property ever becomes an investment.

For Sarah — and for most Australians who have any realistic prospect of owning a second property — the offset account is the more strategic choice, even if the fee-free redraw might seem simpler on the surface.

When Redraw Makes Sense

Redraw is not a second-rate option. It suits borrowers who want simplicity, have a no-frills loan with a sharp interest rate, and are committed to leaving extra repayments untouched as genuine mortgage-reduction payments rather than a liquid savings buffer. It also suits those who are close to paying off their loan and do not need the flexibility of an offset account anymore.

If you are on a tight budget and the annual package fee for an offset account would eat into your savings, compare the fee against your projected offset interest savings using CalcPhi's Offset Account Calculator. The calculator will tell you exactly when the savings outweigh the cost.

Can You Have Both?

Yes — many lenders offer both features on the same loan. You might have a split loan with a variable portion that has an offset account and a fixed portion that has a capped redraw facility. This is common among borrowers who want the certainty of a fixed rate on part of their debt while keeping flexibility on the rest. Use CalcPhi's Mortgage Calculator to model the repayments and total cost across different split scenarios.

Frequently Asked Questions

• Is an offset account the same as a savings account?

  No. An offset account looks and functions like a transaction account — you can spend from it directly — but it is linked to your home loan. Rather than earning interest, every dollar in it reduces the loan balance on which interest is charged. Because mortgage rates are typically much higher than savings rates, this is a more effective use of your spare cash than a traditional savings account.

• Does money in a redraw facility earn interest?

  Not directly. Extra repayments in a redraw facility reduce your outstanding loan balance, which means less interest accrues on the loan. The effect is the same as earning a return equal to your interest rate — it just works by reducing a cost rather than generating income.

• Can a lender freeze or reduce my redraw balance?

  Legally, yes — lenders have done this in rare circumstances, including during periods of widespread financial stress. Offset account funds are held in a separate account and are subject to deposit protections under the Australian Financial Claims Scheme (AFCS) up to $250,000 per ADI. Redraw balances do not carry the same statutory protection.

• Will an offset account affect my tax return?

  Not in a straightforward owner-occupier situation. You do not pay tax on the interest saved through an offset, and you do not claim a deduction for it either. The tax implications become more important if the property is or becomes an investment property — in that case, keeping funds in an offset (rather than redrawing for personal use) helps preserve the deductibility of your loan interest.

• Is it worth paying an annual fee for an offset account?

  It depends on your loan size and offset balance. On a $600,000 loan with $30,000 in offset, you are saving roughly $1,872 in interest per year (at 6.24%). A $395 annual package fee is easily justified. On a $250,000 loan with $5,000 in offset, the fee may outweigh the benefit — use CalcPhi's Offset Account Calculator to run the numbers before committing.

• Can I use my offset account as my everyday transaction account?

  Yes, and many financial advisers recommend doing exactly this. Directing your salary into your offset account means your entire pay cheque is working to reduce your interest from the day it lands, even if you spend most of it before month end. The few hundred or few thousand dollars that sit there for even a short time still reduce your daily interest calculation.