How to open or switch to an offset account on your home loan

If your current home loan doesn’t have an offset account, or you’ve refinanced and lost the one you had, adding one is usually more straightforward than people expect. Here’s what’s involved.

Check your loan type first

Offset accounts are generally only available on variable rate home loans. If you’re on a fixed rate, you typically won’t be able to link an offset account until the fixed term ends, though some lenders offer a limited offset facility on fixed loans, so it’s worth checking with yours directly. Basic variable loans, often the cheapest headline rate a lender advertises, frequently skip the offset feature altogether in exchange for a lower rate.

Opening or linking an offset account

If your loan is eligible, the process is usually one of two things: switching an existing everyday transaction account you hold with the same bank into an offset account, or opening a new offset account and linking it to your home loan. Most major banks let you do this through online banking or their app, under a section for managing your home loan, without needing to speak to anyone. If you can’t find the option, a quick call or online chat with your bank will get it sorted, and it’s worth asking them to confirm in writing once it’s done.

If you’ve just refinanced

Refinancing or switching to a different loan product with the same bank can break the link between your offset account and your mortgage, even if the account itself stays open. This is one of the exact issues flagged in ASIC’s 2026 review into offset account failures, so it’s worth double-checking the link is active again after any refinance, rather than assuming it carried over automatically.

What to check before you switch lenders for a better offset deal

If you’re considering refinancing specifically to get an offset account, compare the full picture, not just the headline rate. Some lenders charge an ongoing annual or monthly package fee for offset access, commonly somewhere in the $200 to $400 a year range, so it’s worth checking whether the interest you’ll save is likely to outweigh that fee given how much you typically keep in the account. A growing number of lenders now offer offset accounts on their lowest-rate loans with no extra fee, so it’s worth comparing rather than assuming you need to pay a premium for the feature.

After it’s set up

Once your offset account is linked, check your next loan statement to confirm the interest charged reflects your offset balance. You can use the offset interest calculator to work out roughly what you should be charged, and compare it against what actually appears on your statement.

Already have an offset account linked? Check your bank is charging you correctly →