This one comes up constantly once people have a bit of spare cash flow: should it go into the offset account, or straight onto the loan as an extra repayment? Mathematically, the interest saving can be identical. The real difference is what happens to that money afterwards — and that’s where the right answer depends on you, not the math.
How Each One Actually Works
An offset account is a separate transaction account linked to your home loan. The bank calculates interest on your loan balance minus whatever sits in the offset — so $20,000 in offset against a $500,000 loan means you’re only charged interest on $480,000, while the $20,000 stays fully accessible to you like any other bank account.
An extra repayment goes directly onto the loan, permanently reducing the balance. It saves the same interest as offsetting the same amount — but that money is no longer yours to draw on unless your loan has a redraw facility, and redraw isn’t always instant or unconditional.
The Redraw Catch
Most loans with redraw let you access extra repayments, but some lenders impose minimum redraw amounts, processing delays, or fees. If you might need that money back on short notice, don’t assume redraw behaves exactly like your own bank account — check the specific terms.
So Which One Is Actually Better?
Offset makes more sense if:
- You want your savings genuinely liquid — accessible instantly for an emergency, opportunity, or upcoming expense
- You’re disciplined enough not to treat easy access as an invitation to spend it
- Your loan doesn’t offer offset, or charges extra for the feature — worth checking, since not all products include it
Extra repayments make more sense if:
- You want the psychological commitment of the balance actually going down and staying down
- Your loan doesn’t have (or charges more for) an offset feature
- You’re confident you won’t need quick access to that money
A Practical Middle Ground
Many people use offset for their genuine emergency buffer and general savings, while still making modest extra repayments from surplus income they’re confident they won’t need back. There’s no rule saying it has to be one or the other.
Frequently Asked Questions
Do offset accounts and extra repayments save the same amount of interest?
For the same dollar amount held for the same period, yes — the interest calculation works out equivalently. The difference is accessibility, not the interest saving itself.
Is there a downside to having an offset account?
Some loans charge a higher rate or an annual fee for offset functionality. It’s worth comparing the cost of the feature against how much you’d actually keep in it — if you’d rarely hold a meaningful balance, a lower-rate loan without offset might work out cheaper overall.
Can I redraw extra repayments whenever I want?
Usually, but not always instantly or without conditions. Check your specific loan’s redraw terms, including any minimum amount or processing time, before relying on it as an emergency fund.
The Bottom Line
Both tools save you the same interest for the same money. The real decision is about liquidity and discipline, not maths — pick the one that matches how you’d actually behave with easy access to your own savings.
Related Reading
- What Actually Happens to Your Repayments When the RBA Moves — why the interest saved from offsetting matters more in a rising-rate environment
- Should You Refinance? The Simple Maths That Actually Answers It — worth checking if your current loan doesn’t offer offset
