If you've had your home loan for more than two years and haven't reviewed it recently, there's a good chance your bank is quietly charging you more than it charges new customers. Reserve Bank data confirms that existing borrowers pay an average of 0.5 percentage points more than new customers on comparable loans. In Australia, this is known as the loyalty tax — and if it applies to you, it's costing thousands of dollars every year.
Some borrowers are in an even worse position: they're mortgage prisoners, stuck with their current lender and unable to refinance because rising rates and tighter lending assessments have left them unable to qualify elsewhere. But the landscape has shifted significantly in 2026 — and many borrowers who previously couldn't escape now can.
KEY FIGURE: Reserve Bank data shows existing borrowers pay an average of 0.5% more than new customers on like-for-like loans — that's $3,500 per year extra on a $700,000 loan, purely for being loyal.
What Is the Loyalty Tax?
The loyalty tax isn't a fee your bank openly advertises — it's the gap between the rate you're on and the rate your lender is quietly offering to attract new customers. Banks have long used sharper pricing for new business, while existing borrowers on older products drift higher without realising it.
This happens because most borrowers set up their loan, sign the paperwork, and move on with life. Repayments go out automatically. Years pass. The lender introduces new, better-priced products — but doesn't proactively move existing customers across. Why would they? It's more profitable not to.
The result: if you haven't reviewed your loan in the last 12–24 months, the rate your neighbour just got when they bought their home is almost certainly lower than yours — often by 0.3%–0.7%.
Example: On a $750,000 loan, a 0.5% loyalty tax costs approximately $3,750 per year — or $18,750 over five years. On a $1,000,000 loan, that figure rises to $5,000 per year.
What Is a Mortgage Prisoner?
A mortgage prisoner is a borrower who is trapped with their current lender — not by choice, but because they can no longer qualify to refinance elsewhere. This typically happens when:
- Interest rates have risen and the borrower can no longer pass the serviceability buffer (the stress test lenders apply on top of the offered rate)
- Property values have fallen, reducing equity below the 20% threshold required to avoid Lenders Mortgage Insurance (LMI)
- Income has changed — job change, business downturn, parental leave — reducing the borrower's assessed capacity
- The loan has grown due to redraws or top-ups, pushing the LVR higher than lenders will accept
At the peak of the rate rise cycle, a significant number of Melbourne borrowers found themselves in this position. The standard 3% serviceability buffer meant lenders had to assess repayments at nearly 9.5% — a level that locked many people out of the refinancing market entirely.
The Good News: The Mortgage Prison Is Opening Up in 2026
The situation has improved considerably. Several lenders have reduced their serviceability buffers from the standard 3% down to as low as 1% in certain circumstances — recognising that the blanket 3% buffer was unnecessarily restrictive for borrowers refinancing into equivalent or better loan structures.
This means many borrowers who were previously stuck now have options they didn't have 12 months ago. Combined with more competitive lender pricing and cashback offers of up to $4,000–$10,000 currently available in the market, the case for reviewing your loan has rarely been stronger.
For Melbourne borrowers across Essendon, Coburg, Keilor East, Keilor Downs and the inner north-west, where property values have generally held firm, the equity position for most homeowners remains solid — meaning the LVR obstacle that traps some borrowers is less likely to apply.
How to Tell If You're Paying the Loyalty Tax
You don't need to spend hours researching comparison sites. The quickest way is a three-step check:
- Find your current rate — it's on your loan statement or your lender's online banking platform
- Compare it to what your lender is currently advertising for new customers — search your bank's website for their current variable rate
- Note the gap — if your rate is 0.3% or more above what new customers are being offered, you're paying the loyalty tax
A broker can run this comparison across 30+ lenders in minutes — not just your current bank — and show you in writing what the true saving looks like net of any switching costs.
Your Options: Negotiate, Refinance or Do Nothing
If you discover you're paying the loyalty tax, you have three paths:
Option 1: Ask your lender for a rate reduction
This costs nothing and sometimes works. Call your lender's retention team and let them know you've been shopping around and found better rates elsewhere. About 30–40% of borrowers who make this request get a meaningful rate reduction without switching. A broker can also do this negotiation on your behalf, with the advantage of knowing exactly what comparable lenders are offering.
Option 2: Refinance to a new lender
If your current lender won't move, or the saving available elsewhere is substantially better, refinancing is the most effective solution. With cashback offers of up to $10,000 currently available from some lenders (subject to loan size and eligibility), the upfront switching costs of $400–$800 in government fees are often more than covered. A Melbourne mortgage broker compares your options across 30+ lenders and runs the true cost modelling — rate saving minus switching costs — so you can make an informed decision.
Option 3: Do nothing
This is always an option — but understand what it costs. At 0.5% on a $700,000 loan, doing nothing for five years costs approximately $17,500 in unnecessary interest. For most homeowners, a one-hour review conversation is the highest-value use of that hour.
What About the RBA and Rate Volatility?
The RBA cash rate remains volatile in 2026, with further moves still possible through the remainder of the year. This is actually a reason to review sooner rather than later — locking in the right rate structure now (fixed, variable or split) before any further movement could make a meaningful difference. A broker helps you assess not just the current best rate, but the right loan structure for the rate environment ahead.
Approximately 38% of Australian mortgages are approaching fixed-rate expiry in the next 12 months. If you're in this group, the jump from your fixed rate onto your lender's standard variable rate — without reviewing your options first — is one of the most expensive things a homeowner can do.
A Note on Fixed Rate Expiry: The Cliff Is Real
Borrowers who fixed their rate at the historic lows of 2021–2022 (some as low as 1.9%–2.5%) are now rolling off onto standard variable rates that are dramatically higher. If your fixed term is ending in the next 3–6 months, this is the most urgent time to review — ideally 60–90 days before expiry, while you still have time to compare lenders and arrange a smooth switch without a rate shock.
Find Out in 15 Minutes If You're Paying the Loyalty Tax
Our Melbourne mortgage brokers will check your current rate, compare it across 30+ lenders, and give you a clear, written summary of your options — including the real saving after switching costs. No obligation, no pressure, no broker fees.
This article is general information only and does not constitute financial advice. Interest rates, cashback offers and figures quoted are indicative only and subject to change. Serviceability assessments vary by lender and individual circumstance. Please speak with a qualified mortgage broker or financial adviser to assess your individual situation. Integrated Finance Group operates under Australian Credit Licence 391237 via BLSSA Pty Ltd.