Is the money in redraw actually yours?

Say you pay $1,000 more than you have to this month. That $1,000 comes straight off your loan. You now owe a thousand less and you're paying interest on a smaller debt. That's a genuinely good thing to do and it saves you real money.

What you don't have is $1,000 sitting in an account somewhere. There isn't one. Redraw is the bank's arrangement to lend that money back to you when you ask for it.

Westpac's redraw form puts it about as plainly as a bank ever does. "We may refuse any request for a withdrawal at any time. We may also cancel your redraw option at any time." Every lender's paperwork says some version of that.

So the "available redraw" figure on your statement isn't a balance. It's a limit. Most people read it as a balance. Hard not to, when it sits on the same screen as one.

Three things move that limit.

Every home loan contract in the country says roughly the same thing. If you're behind on your repayments, the bank doesn't have to let you redraw.

Which means the sequence can work against you. Your income stops, a repayment gets missed, and redraw switches off at the point you were counting on it.

That's the main reason Shane would steer you away from making redraw your only emergency fund. Not because it's a bad feature, but because an emergency fund needs to work in an emergency.

Say you've got a $500,000 loan over 30 years at 6.14%, so you're paying $3,043 a month. Ten years in your balance is around $420,000, and you put a $200,000 lump sum onto it. That drops you to about $220,000, so the bank writes and offers to cut your repayment to roughly $1,594. Most people take it, and if you want the cashflow there's nothing wrong with that.

What that does to your redraw isn't obvious. The bank works out your limit as the gap between what you owe now and what you'd have owed on minimum repayments alone. Lowering the repayment narrows that gap, and it keeps narrowing every month afterwards.

By year 25 your balance is about $82,000. On minimum repayments alone you'd have owed about $157,000. So your available redraw is the difference, roughly $75,000. Of the $200,000 you put in, about $125,000 is out of reach.

Keep paying $3,043 instead and the picture is completely different. The loan clears about seven and a half years after the lump sum, and the full $200,000 stays available to you right up until it does.

This one is rare, and it belongs in proportion rather than oversold.

It has happened at scale once. In April 2020 ME Bank recalculated the available redraw on a batch of older home loans, cutting the figure by around $17,000 on average. It went badly for them. They put the limits back for anyone who asked, and no other Australian lender is known to have done the same thing since.

So this isn't something to lie awake over. It's on the list because the contract wording above still sits in your loan documents today, whether or not your lender ever uses it.

This is where redraw can cost you real money.

If your loan bought an investment property and that's all it's ever done, the interest is deductible and stays deductible. Nothing here changes that.

The issue is what happens when you redraw. Money you pull back out is treated as a fresh borrowing, and it gets judged on its own, by what you spend it on. So take $50,000 out and buy a car with it, and the interest on that $50,000 isn't deductible. Your loan now has two purposes instead of one.

Paying the $50,000 straight back doesn't undo it, which surprises most people including plenty of brokers. The tax office is direct about this. "You can't only repay the portion of the loan for your private purchases. All loan repayments must be apportioned across both rental and private portions of the loan for the length of the loan."

So once the ratio is set, every repayment gets split along it. Pay $10,000 against a loan that's 90% investment and 10% private, and $9,000 of it goes to the investment side whether you want it there or not. The private slice only shrinks in step with the deductible slice you were trying to protect. Cleaning it up properly usually means splitting or refinancing the loan, which is a conversation for your accountant.

Take the same money from an offset account and none of this arises. You're spending your own savings, so there's no new borrowing and nothing to apportion.

Often, yes. That's what they're for.

Money in an offset account is yours. It sits in a normal bank account with your name on it, and it cuts your interest by the same amount redraw does. The bank can't reduce it, freeze it, or switch it off because you're behind on the loan.

The trade-off is the fee. Offset usually comes bundled into a package costing around $395 a year at the major banks. At today's rates you need somewhere north of $6,000 sitting in there before the interest saved covers that.

So if a few thousand is all you'll ever have parked, redraw is the better deal and Shane will say so. If you're building a real buffer, or you own an investment property, offset is the stronger choice.