In pure dollars they're almost identical. The right choice comes down to flexibility — and tax.
It's one of the most common questions borrowers ask: should I park spare cash in an offset account, or pay it straight off the loan? People expect a clear winner. The surprising truth is that in raw interest saved, the two are almost identical.
An offset account reduces the balance your interest is calculated on by the amount sitting in it. Extra repayments reduce the balance directly. Either way, you're paying interest on a smaller number, so the interest saved — and the time shaved off your loan — comes out nearly the same. So if the maths is a tie, the decision is really about everything around the maths.
Money in an offset is still your money. You can withdraw it any time, for any reason, with no questions and no re-application. That makes an offset ideal for your emergency fund and any savings you might need at short notice — you get the interest benefit without locking the cash away.
Paying directly off the loan is a set-and-forget way to get ahead, and for people who'd otherwise spend money sitting in an account, that discipline is valuable. The trade-off is access: getting it back means relying on a redraw facility, which some lenders limit, charge for, or can change the terms on.
For an investment loan, the calculus changes. The interest is usually tax-deductible, so paying down the loan reduces your deduction — whereas keeping the cash in an offset lowers your interest without touching the deductible balance. For most investors, an offset is the smarter structure. Many households run a blend: emergency fund in offset, then surplus as extra repayments. The best structure depends on your goals, your loan type and your discipline — worth a conversation before you set it up.
Try the offset vs extra repayments calculator — then talk to us to confirm the real numbers.
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