ASIC Report 837: Banks Paid $55 Million for Offset Account Failures. Check Yours Tonight

Australian banks paid more than $55 million in compensation for mortgage offset account failures reported to ASIC between 1 September 2023 and 31 August 2025. That number comes from ASIC's Report 837, published 29 July 2026, and the regulator says further compensation is expected as banks keep digging. If you have an offset account, tonight is a good night to open your banking app and confirm it is actually connected to your loan.

The numbers ASIC put on the table

ASIC reviewed how eight banks (AMP, ANZ, CBA, Credit Union Australia, HSBC, ING, Macquarie and Westpac) set up, linked and managed offset accounts. Together those banks write more than 70% of Australia's $2.5 trillion home loan market. The review examined 204,000 unique loans settled between 1 March and 31 August 2025 and found weaknesses in how all eight set up, monitored and managed offsets.

The scale matters because offset money is now enormous: $349.1 billion sat in offset accounts as of March 2026, up 28% over two years, spread across a market of roughly 3.3 million mortgaged households.

ASIC chair Sarah Court's summary was blunt: some banks are not getting the basics right, and in some cases offset failures went undetected until ASIC started asking questions.

The three ways your offset quietly breaks

Opened but never linked (55% of cases)

You see a healthy balance in the app, assume it is doing its job, and the bank keeps charging interest on your full loan anyway. This was the single most common failure the reviewed banks identified.

Never opened at all (22%)

The offset you asked for was never created, usually lost somewhere between a broker, a settlement, and a to-do list.

Linked later than promised (14%)

The connection lands weeks or months after the date the bank gave you, and every one of those days is interest you were told you would not pay.

The common thread: none of these show up as a fee, an alert, or a changed repayment. Your direct debit stays identical. The only thing that moves is the invisible split between interest and principal inside each repayment, and almost nobody reads that line.

The four failures ASIC called out at the banks

Report 837 groups the systemic problems into four findings, and each one maps to something you can check from your side. Banks struggled to readily identify which customers had asked for an offset in the first place; some had to manually reconstruct information flows just to answer ASIC's questions. Detection of failures was inconsistent from bank to bank. Compensation, where owed, was slow, and fixes slower. And customers lacked visibility: apps and statements often did not show clearly whether an offset was connected and doing its job.

The methodology matters for reading the numbers honestly. ASIC examined loan-level data for mortgages settled between March and August 2025 and asked banks to identify failures on every second loan. The review deliberately did not audit how interest itself was calculated, so the $55 million covers only what banks found and reported. ASIC's own conclusion is that the problem may be more widespread than the figures show.

The complaint patterns tell the same story from the customer side. The top drivers were offsets fumbled through manual processing (especially requests made mid-loan instead of at settlement), poor communication about the account, and plain failure to set up or link the offset at origination.

Check your offset in five minutes, bank by bank

In the CommBank app, type 'Offset' in the search bar and select 'Manage my offset'. It shows which loan the account is linked to. In Westpac online banking, go to Service, then Account services, then Manage offset accounts. Other banks bury it in similar places; if you cannot find it, that is itself a reason to call.

Then do the arithmetic check: pull two loan statements and watch whether the interest charged falls when your offset balance rises. A large offset balance sitting next to unchanged monthly interest is exactly the pattern Report 837 describes.

If you find a gap, the offset error cost calculator puts a dollar figure on what the broken period cost you. On a $100,000 offset at a 6% variable rate, twelve unlinked months is roughly $6,000 of interest you paid and should not have.

What compensation actually looks like

There is no central fund and no automatic cheque. Compensation is bank-by-bank remediation: the bank recalculates your loan as if the offset had worked, refunds the difference, and adjusts for the compounding you missed. Five of the eight reviewed banks ran offset remediation programs during or after the review period, and banks kept paying compensation for failures reported after the review window closed.

ASIC's position is that it expects all banks, not just the eight reviewed, to identify failures and compensate affected customers appropriately. But the report also found detection was inconsistent and that some banks could not readily identify which customers had even requested an offset. Translation: do not wait to be found.

Bank said no? The AFCA route

Start with a written complaint to your bank naming the exact period and asking for a full remediation calculation, not a goodwill credit. Attach your own estimate. If the bank stalls, lowballs, or rejects, the Australian Financial Complaints Authority handles offset disputes free of charge, and its time limits generally run six years from when you became aware of the loss. An error dating back to 2021 can still be a live claim today.

Keep everything in writing, keep your statements, and compare any offer against your own numbers before accepting. A remediation offer that covers three months when your app history shows fourteen unlinked months is not a final answer; it is an opening position.

What a strong complaint letter contains

Keep it to one page. State the loan account number, the offset account number, the date you requested or expected the link, and the date it was actually connected (or note that it still is not). Ask for three specific things: a daily-interest recalculation over the whole affected window, the compounding adjustment on top (a working offset would have paid your principal down faster every single month), and a written explanation of how the failure happened. Give a response deadline and say plainly that the next stop is AFCA if it passes.

A quick sense of scale helps you decide how hard to push. Take Dana, who parked $60,000 in an offset that stayed unlinked for nine months at 6.2%: that is $60,000 x 0.062 x 9/12, about $2,790, before compounding. ASIC's Moneysmart site walks through a couple in a similar spot who paid over $3,000 in additional interest in a single year at 6.25%. These are not rounding errors, and banks resolve documented complaints very differently from vague ones.

Where this fits in your loan setup

If this episode has you questioning whether an offset is even the right feature, the honest answer depends on how you bank. An offset only beats a redraw facility if you actually keep meaningful cash parked against the loan. Our offset vs redraw comparison walks through the differences, including the traps on each side.

Either way, the lesson of Report 837 is the same: the feature you pay for is only worth something if it is switched on, and the only person guaranteed to check is you.