Offset accounts and redraw facilities both reduce the interest charged on your home loan, and both let you get extra money back out when you need it. Because of that, it's easy to assume they're basically the same thing. They're not, and the difference matters more than most borrowers realise, particularly if your property is ever used for investment.
How an offset account works
An offset account is a separate transaction account linked to your home loan. Your loan balance itself never changes. Instead, the bank subtracts your offset balance from your loan balance before working out how much interest to charge you. Put $30,000 in your offset against a $500,000 loan, and you're only charged interest on $470,000, while your $30,000 stays fully accessible, just like money in any everyday account.
How a redraw facility works
A redraw facility works differently. When you make extra repayments above your minimum required amount, that money goes straight onto the loan and actually reduces the loan balance. If you later want that money back, you "redraw" it, which re-advances the funds and increases your loan balance again. There's no separate account: it's a feature attached to the loan itself, and some lenders limit how often you can redraw, charge a small fee per withdrawal, or restrict access during periods of financial hardship.
The tax difference that catches people out
For an owner-occupied home with no investment plans, offset and redraw often produce a very similar result day to day. The difference becomes serious if the property is, or ever becomes, an investment property. If you redraw funds from an investment loan and use them for something personal, like a holiday or a car, the interest on that redrawn portion may no longer be tax deductible, since the ATO looks at what the borrowed money was actually used for. Money in an offset account never touches the loan at all, so the loan balance and its deductibility stay untouched no matter what you do with the offset funds. This is why most tax-conscious property investors in Australia are steered toward offset accounts rather than redraw for anything that might become an investment loan.
Which one should you use?
If flexibility and simplicity matter most to you, an offset account is usually the easier option: it behaves like a normal bank account, has no withdrawal limits, and keeps your tax position clean if your circumstances change. If you'd rather have a fixed, disciplined payoff plan and won't need to access the money often, extra repayments through a redraw facility can work well too, particularly if your lender doesn't charge fees for it. Many people use a mix: keeping an emergency fund in an offset account, and directing any surplus beyond that into extra repayments.
Because the tax treatment can be significant, especially if your home could become a rental property down the track, it's worth checking with a tax professional or accountant before deciding which structure suits your situation. This guide is general information only and doesn't take your personal circumstances into account.