Is an offset account actually worth the extra fees? A first home buyer’s guide

Plenty of home loans don’t include an offset account at all, and many that do charge extra for the privilege, either as a higher interest rate, an annual package fee, or both. As a first home buyer weighing up loan options, it’s a fair question: is it actually worth paying for?

What offset accounts typically cost

Where lenders charge for offset access, it’s commonly an annual package fee somewhere in the $200 to $400 range, sometimes bundled with other account-keeping fees, or occasionally billed monthly instead. Some lenders charge a slightly higher interest rate on loans with an offset feature rather than a flat fee. On the other end, a growing number of lenders now include offset accounts on their lowest advertised variable rate with no extra cost at all, so the fee isn’t universal, it depends entirely on which loan and lender you choose.

The simple way to work out if it’s worth it

The math comes down to comparing the annual fee against the interest you’ll actually save by keeping money in the offset. As a rough rule of thumb, divide the annual fee by your home loan interest rate to find the average offset balance you’d need to hold just to break even. For example, with a $300 annual fee and a 6.15% interest rate, you’d need to keep roughly $4,880 in your offset on average across the year just to cover the fee. Anything you hold above that is where the real saving kicks in.

If you’re realistically going to keep a much larger balance in there, say, a deposit you’re saving for a renovation, an emergency fund, or surplus income, the fee is usually easily worth it. If you’d only ever have a few hundred dollars sitting in the account, a fee-free basic loan without an offset might genuinely leave you better off.

Don’t just compare the fee, compare the whole loan

It’s easy to fixate on the offset fee in isolation, but what actually matters is the total cost of the loan: the interest rate, the fee, and any other features you’ll actually use. A loan with an offset account and a slightly higher rate can still end up cheaper overall than a basic no-fee loan with a lower advertised rate, once your offset balance is factored in. This is exactly the kind of comparison worth running past a mortgage broker, since they can model it against your actual numbers rather than a rough estimate.

Try it with your own numbers

Use the offset interest calculator to see roughly how much interest an offset balance would save you each month at your loan amount and rate, then weigh that against any fee you’d be paying for the feature.

Curious what your own numbers look like? Try the offset interest calculator →