Most of us have a bank we have been with for years, and sometimes it starts to feel like a parasocial relationship. They gave you your first account, probably your first mortgage, and then you don’t really hear back from them and switching sounds like more hassle than it could possibly be worth.
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Banks are counting on exactly that feeling.
The uncomfortable truth is that loyalty rarely gets rewarded in home lending. It gets billed. Here is how the trap works, why it matters more in 2026 than it has in years, and what you can do about it.
What is the big bank loyalty trap?
The loyalty trap, or “loyalty tax” as it is often called, is straightforward enough. Banks compete hard for new borrowers with sharp advertised rates, then let those same customers drift onto higher rates once the ink is dry. Nobody writes to tell you. Your rate just quietly stops being competitive.
The ACCC put real numbers to this in its home loan price inquiry. The longer a borrower had held their loan, the worse their rate looked next to a new customer's. People three to five years in were paying around 0.58 percentage points more. Those with loans over ten years old were paying more than a full percentage point above what someone walking through the door that day was offered.
Nothing much has changed since, with existing big four customers typically sitting 0.30 to 0.50 percentage points above new ones at the very same bank.
This is no oversight. It is a pricing strategy built on inertia, and the fairly safe bet that most people will never pick up the phone and ask.
What is it actually costing you?
On a $600,000 loan, sitting 0.40 percentage points above the going rate costs somewhere between $135 and $170 extra each month. That is more than $1,600 a year, for nothing in return. Stretch it across five years, and you are talking about the price of a reasonable car.
Why do you need to be on top of your mortgage now?
Rates have been heading the wrong way for borrowers. The Reserve Bank lifted the cash rate three times in the first half of 2026 before holding it at 4.35 per cent in June. The next decision lands on 11 August, and the economists are split on which way it goes.
Here is the bit people miss. When the RBA moves, lenders do not all follow at the same pace or by the same amount. Increases tend to reach existing customers in full, and quickly. The genuinely sharp deals stay pointed at new business. So the gap between what you pay and what you could be paying tends to grow in precisely the months when your budget is already stretched.
Plenty of Australians have worked this out. ABS figures show 640,137 home loans were renegotiated or switched during 2025, a 20 per cent jump on the year before, and close to two-thirds of those who refinanced moved to a different lender entirely. The bank-for-life era is fading.
How does refinancing actually work?
It is less painful than its reputation suggests. The process runs roughly like this:
Work out your goal and your numbers. A lower rate is the usual driver, though some people refinance to consolidate debt or tap into equity. Check what you owe against what the property is worth now.
Gather the paperwork. Payslips, loan statements and identification. A broker will package it to suit each lender's particular quirks.
Application and valuation. The new lender assesses you and values the property, sometimes by desktop rather than an in-person visit.
Discharge and settlement. Your old mortgage is discharged, the new lender pays out the old loan, and repayments begin on the new terms.
Refinance settlements are averaging about 24 days in 2026, down from roughly 31 days two years ago, and discharge costs generally total somewhere between $300 and $700.
When is the right time to make the move?
If you are on a variable rate and have not looked at it in two years or more, take that as your cue. Ring your lender, ask what they can do, and get a comparison in front of you. Asking with a competing offer in hand often does the job on its own.
Fixed rates need more care. Break costs can be steep early in a term, so ask for a written estimate before committing to anything. If your fixed period ends within six months, it is usually smarter to line the refinance up now and settle on the expiry date. That sidesteps the break fee and stops you sliding onto the revert rate.
Equity matters too. Hold less than 20 per cent of the property's current value, and you may be up for lenders' mortgage insurance a second time, which can swallow the benefit whole. Run the break-even sums: add your upfront costs together, then work out how many months of savings it takes to cover them.
If that feels like a lot to weigh up, it is the sort of thing brokers handle every day. Orange Home Loans refinancing support can run the comparison, do the break-even maths and manage the paperwork, ensuring your decision comes down to numbers rather than guesswork.
Loyalty should not cost you
Your bank is not going to volunteer a better rate. The whole system works because most of us never ask. An hour of your time and a couple of phone calls is enough to find out whether your loyalty is quietly costing you, and if it is, to stop paying for it.
This is general information rather than financial advice, so check your own circumstances with a licensed broker or adviser before you switch.
