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Issue 001 · Story 2 · Household moneyOne story. Many lenses.

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Issue 001 Story 2

Is your mortgage offset actually working? Here is how to check.

Seeing an offset balance in your banking app is not enough. Confirm that the account is linked to the correct loan, then ask the bank to show the interest benefit it produced.

By LensPublished 14 August 2026About four minutes

What people heard

If the banking app calls it an offset, it must be reducing my mortgage interest.

Not established until checked

Is the label enough to prove that?

Short answer. Confirm that the account is an offset, that it is linked to the correct loan and that the bank can show the interest benefit it produced.

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Read, listen or follow the question.

The facts do not change. Each view uses the same published sources and leaves the same questions open.

AaReadGo straight to the best-supported answer.

Different viewsSee what each perspective notices—and may miss.

See through another Lens

Which view do you want to understand first?

Each view notices something useful. None is allowed to stand in for the complete evidence.

Borrower

The practical issue is whether my interest was lower—not whether an account carried the word offset.

What this view explainsWhy a customer needs a loan-level answer and a measurable benefit.

What it may missOne correct account cannot show whether the bank's wider controls are adequate.

The answer

Confirm three things.

The account exists

Make sure it is an offset account, not simply a transaction account or a redraw facility.

The correct loan is linked

Ask the bank to name the loan account that receives the benefit. Check again after refinancing or changing the loan.

The interest is lower

Ask the bank to confirm how much interest the offset saved during a stated period. A displayed balance alone does not answer this.

What ASIC found

The failure can remain hidden.

The Australian Securities and Investments Commission reviewed eight banks that represented more than 70 per cent of the Australian home loan market. It found weaknesses at every bank in the way offset accounts were set up, linked or managed.

Banks reported more than A$55 million in compensation for offset failures reported between September 2023 and August 2025. More compensation was expected.

This does not mean every offset account is wrong. It also does not prove the total number of affected customers. ASIC said some banks could not readily identify whether customers had requested an offset account. That makes the full size of the problem difficult to establish.

How the saving works

Follow one day of interest.

Most home loans calculate interest each day. The lender should subtract the eligible offset balance from the loan balance before calculating that day's interest.

Loan balanceA$500,000

minus

Offset balanceA$50,000

equals

Balance charged interestA$450,000

At a 6 per cent annual rate, a constant A$50,000 offset balance would reduce interest by about A$8.22 each day, or about A$3,000 across one year. This is a simple illustration. Actual savings change with daily balances, rates, fees and loan terms.

Check yours

Do not try to rebuild the whole loan calculation.

ASIC says the first place to look is the bank website or app. If it does not clearly show the connection and benefit, ask the bank directly.

1
Open the loan details
Look for the name and number of every account linked as an offset.
2
Check after any loan change
Refinancing, splitting a loan or changing products may require the account to be linked again.
3
Ask one precise question
“Please confirm that account ending ____ was linked to loan ending ____ from this date, and tell me the interest benefit applied during that period.”
4
Keep the answer
Save the message, statement or letter. If there was a failure, ask for the affected dates, the calculation and compensation.
5
Escalate an unresolved complaint
Complain to the bank first. If it is not resolved, the Australian Financial Complaints Authority accepts complaints about mortgage offset accounts.

What remains unknown

The public evidence does not reveal the total harm.

How many customers are still affected
How much further compensation will be paid
Whether a particular account is linked correctly
Whether every bank outside the review has adequate controls

Only the bank has the account records needed to answer the question for an individual loan.

Try it yourself

Find the link before you trust the label.

Open your banking app. Can you see the exact loan connected to the offset account? If not, send the precise question above. Stop there. The bank should do the detailed calculation.

Evidence

Read the records behind the answer.

Primary regulator recordASIC mortgage offset review

Scope, findings, banks reviewed, failure types and customer checks.

Government guidanceHow offset accounts work

Daily interest, partial offsets, fees and the difference from redraw.

Complaint pathwayFinancial complaints authority

The external complaint pathway for mortgage offset accounts.

Issue 001 record Three official records reviewed · published 14 August 2026 · figures checked against the regulator record · calculations labelled as Lens examples Inspect the evidence register →