Offset Account vs Redraw Facility: What's the Difference?

01Two Features, One Broad Goal, Different Mechanics

Offset accounts and redraw facilities both let you reduce the interest cost on a home or investment loan by using extra funds you have on hand, and both are commonly offered on Australian mortgage products. Because they achieve a similar broad effect, lower interest paid, they're often mentioned in the same breath. But the way each one actually works is quite different, and for investors, that difference can matter for tax purposes, not just convenience.

02How an Offset Account Works

An offset account is a separate, everyday transaction account linked to your home or investment loan. The balance sitting in that account is offset against your loan balance when the lender calculates interest, so if you have a $500,000 loan and $50,000 sitting in a linked offset account, you're only charged interest on the effective $450,000. The money in the offset account remains legally yours, it's not part of the loan, you can withdraw it, spend it, or move it around like any other bank account, and it still offsets whatever is currently in it, no fixed commitment required.

Because the offset funds are a genuinely separate asset from the loan, using an offset account doesn't change the loan itself, its purpose, its structure, or its interest deductibility remain as they were when the loan was drawn down.

03How a Redraw Facility Works

A redraw facility works differently. If you make extra repayments beyond your minimum required amount, those extra funds reduce your loan balance, and a redraw facility lets you access, or "redraw," that extra amount back out later if you need it. Unlike an offset account, the extra money isn't sitting in a separate account, it has actually gone into the loan, and redrawing it means re-borrowing it.

This distinction matters more than it might first appear, particularly for investment loans, because of how interest deductibility is generally assessed: it depends on the purpose the borrowed funds are used for. When you redraw funds from an investment loan and use them for something unrelated to the investment, a personal expense, for example, you can end up with a loan that's now partly for investment and partly for a private purpose. Untangling that mix for tax purposes can be genuinely complicated, and getting it wrong can affect how much of your interest is actually deductible.

04Why the Distinction Matters for Investors

For an investor with a straightforward owner-occupier loan, the choice between offset and redraw is mostly a matter of preference, fees, and how the features are priced on a given loan product, since there's no investment interest deductibility at stake. For an investor with a loan against a rental property, the calculation is different.

Because offset funds never actually enter the loan, using an offset account on an investment loan is generally considered cleaner from a tax perspective: your loan purpose and balance are unaffected by how much sits in the offset account at any given time. Redrawing on an investment loan, by contrast, and then using those funds for a non-investment purpose, can create a mixed-purpose loan, which may require you to apportion interest between deductible and non-deductible components, a more complex calculation that most investors would rather avoid if they can.

This doesn't mean redraw facilities are never appropriate for investors, some investors redraw specifically to fund further investment-related costs, which keeps the purpose consistent. But it does mean the decision deserves more thought than simply picking whichever feature happens to be available or cheaper on a given loan product.

05Practical Differences Beyond Tax

Setting tax aside, there are a few other practical differences worth knowing:

• Access speed and flexibility. Offset accounts typically behave like a normal transaction account, instant access, card access in many cases, no approval needed. Redraw facilities can sometimes have minimum redraw amounts, processing delays, or require a request to the lender.
• Fees and loan pricing. Some lenders charge a higher interest rate or an account-keeping fee for loans with a full offset feature compared to a basic loan with redraw only. It's worth comparing the total cost, not just the feature list.
• Security in the event of default. Offset account funds are your own money in your own account (though check your specific bank's terms), whereas redraw funds are, until withdrawn, part of the loan and therefore part of what the lender may have claim over in certain circumstances. Loan terms vary, so read the product disclosure documents for specifics.

06Where This Fits Into Your Lending Decisions

Offset versus redraw is just one of several loan structure decisions investors need to think through alongside broader questions like LVR, LMI, and whether to go interest-only or principal and interest. Our guide to LVR and lending for investors in Australia covers these decisions together as part of setting up an investment loan.

07The Bottom Line

Offset accounts keep extra funds separate from the loan, giving flexibility and generally cleaner tax treatment for investors, while redraw facilities pull extra repayments back out of the loan itself, which can create tax complexity on an investment loan if redrawn funds are used for a non-investment purpose. Neither is automatically the right choice for every investor, and this article is general education, not personalised financial or tax advice, so confirm how either option would apply to your specific loan and circumstances with your lender, broker and a registered tax agent.