I usually say for someone trying to pay off a home:
-Get 100% offset, take cash from here, get atm cards for this account, get it with no fees
-Direct salary crediting into offset account
-Have a credit card, pay for everything that is not cash with a credit card. Repay the card from the offset account before the interest free days are up. This way as much money is in the offest for as long as possible.
-Get a loan that is essentially free to change between fixed/variable or split it at will.
-No ongoing fees
-But most importantly: Lowest interest rate.
But the truth is people often do little to no calculations over what makes a difference and what doesn’t. Like direct salary crediting to an offset account and living off a credit card and paying it back at the end of the month or after 30 days for each purchase is never going to put you ahead more than 1 months living expenses. For example if you are in debt $300k and living expenses are $2.5k for the month, if you follow the plan perfectly, the best you can do is basically have an effective debt of $297.5k. A saving of about $3,000 in interest. Now instead imajine you got a loan that wasn’t 7.5% but 7.0% interest rates, the difference ends up being $18,000. If you got one that did both you could save over $21,000.