24/09/2025
Offset accounts...the closest thing to 'hacking your home loan' that I have come across.
If used properly, an offset account can save you both time and money on your home loan. Here's how:
1. Paying less interest. To understand how offset accounts work, you first need to understand how interest is calculated. At the end of each day, the bank will calculate how much interest they are going to charge you for that day, based on this equation:
Outstanding debt × interest rate ÷ 365
So if you debt us $500k, and your rate is 5.35%, it would look like this:
$500k × 5.35% ÷ 365 = $73.29
They do this every day for a month, total the interest, and then charge it to you in one lump sum.
If you have an offset account, the balance in your offset is taken off your loan balance when the bank does their calculation. So let say you have $15k in your offset, your interest balance would be $485k, not $500k. So:
$485k × 5.35% ÷ 365 = $71.09
So in this scenario, you'd save $2 per day, around $60 per month, or $720ish per year.
2. Pays off your loan quicker. An offset account reduces the interest you pay, but not your minimum monthly repayment. Let's say your monthly repayment for the above scenario is $4,500. Your monthly interest with no offset would be $73.29 × 30 days = $2,198.70.
So $2,301.30 would be going towards your principle.
But if you have $15k in your offset, your monthly interest would be $71.09 × 30 days = $2,132.70.
So $2,367.30 would be paying off your principle.
3. The last major benefit is that once your offset account set up, there is nothing more you have to do to access the first two benefits. Use this as your main bank account, get rid of all of your others, and you will save time and money. Set and forget.
This chat is general in nature, and should not be considered financial advice. I have not taken your personal situation into account, for tips specific to you please hit up a qualified financial adviser.
Your full financial needs and requirements need to be assessed prior to any offer or acceptance of a loan product.
Credit Representative 557024 is authorised under Australian Credit Licence 389328.