Think your offset account is actually saving you interest? Worth checking

Honestly, this is one people rarely think to check.

An offset account is meant to be simple. It's a separate account linked to your home loan, and whatever sits in it reduces the loan balance you're actually charged interest on. $50,000 sitting in offset against a $500,000 loan means you're only paying interest on $450,000.

Most people set it up once and assume it just runs quietly in the background from then on.

Here's what's come out recently. A regulatory review looked at how offset accounts were actually working across a number of major banks, and found linking failures at every major bank it reviewed. Some customers had offset balances that weren't properly reducing the interest charged on their loan, in some cases for years without anyone noticing. More than $55 million has already been repaid as a result.

To be clear, this isn't every bank or every customer. It's not something happening constantly either. But it's clearly not as rare as most people would assume, and the whole point of an offset account is that the saving is invisible day to day, so a fault like this can sit there undetected for a long time.

A couple of things worth checking yourself.

Compare your loan statement's interest charged against your offset balance for the month. Does the math roughly line up with what you'd expect?

If your offset balance and your loan account aren't with the exact same provider, or don't show together in your banking app, that's worth double-checking directly with your lender.

Takes a few minutes, and it's the kind of thing where a small linking error can quietly cost you real money over a few years.