The Mortgage Loyalty Tax: What Your Bank Is Not Telling You

There is a pattern in Australian home lending that has been well documented, regularly criticised, and almost entirely ignored by the people it affects most.

Banks compete hard for new business. When a new customer applies for a home loan, they are offered competitive rates, cashback incentives, and fee waivers. The bank wants that customer. Once the customer is in, the competitive energy evaporates. Existing customers get their rate adjusted when the cash rate moves, but they rarely get proactively offered the sharp pricing that a new customer walking in the door would receive.

The difference between what a new customer pays and what a loyal existing customer pays is sometimes called the loyalty tax. In a rising rate environment, it compounds. And most borrowers have no idea it exists on their loan.

Why the Gap Exists

Banks have different motivations for new customer acquisition versus existing customer retention. New customers represent growth. Retention of existing customers is largely taken for granted, because most people do not refinance.

The data supports this. The majority of Australian borrowers stay with their original lender for the life of their loan, or close to it. Banks know this. They price accordingly. The customer who is unlikely to leave does not need to be offered the rate that would attract a new customer from a competitor.

This is not a conspiracy. It is rational business behaviour. The problem is that most borrowers do not realise they are on the wrong end of it.

What the Gap Actually Costs

The difference between a competitive rate and a loyalty rate varies depending on the lender and the market conditions, but in the current environment it is not uncommon to find a gap of 0.4% to 0.8% between what a diligent borrower who shops the market pays and what a loyal borrower who has not reviewed their loan in two years pays.

On a $700,000 loan, 0.5% is $3,500 per year. Over five years with normal principal reduction, that is roughly $16,000 paid in excess interest that a phone call and a refinance could have avoided.

That is not a small number. For most households, $16,000 is a meaningful amount of money that could have been directed toward the loan principal, an offset account, or an investment.

Rate Rises Made This Worse

In a stable rate environment, the loyalty tax is a real but sometimes moderate issue. In a rising rate environment, it becomes more acute.

Here is why. When rates rise, lenders pass on increases to existing variable customers. But lenders also launch new competitive products to attract borrowers from competitors. The new product rates are often sharper than what existing customers are moved to after the rate rise.

The borrower who took out a loan two years ago at a rate that was competitive then, experienced multiple rate rises applied to their existing loan, and never reviewed their position is in a materially worse situation than a borrower who refinanced recently. They are on a rate that was set in a different market, adjusted upward by each cash rate move, while the lender has been offering better terms to new customers the entire time.

Refinancing in this environment is not just about getting a better rate. It is about resetting to the rate you would be offered as a new customer, which is often significantly better than the rate you are currently on as a loyal existing one.

Why Most People Do Not Act

Refinancing feels like effort. There is paperwork, there are valuations, there are discharge fees and settlement fees. The friction is real, even if it is not as significant as most people assume.

The behavioural economics behind the loyalty tax are well understood. Inertia is powerful. People overweight the cost of action relative to the cost of inaction. A $500 discharge fee feels concrete and immediate. $3,500 per year in excess interest feels abstract and distant, even though it is considerably larger.

The other factor is that most borrowers do not know what rate they should be on. Without a point of comparison, there is nothing to react to. They receive their monthly statement, see a rate, and assume it is roughly what they should be paying because the bank has not told them otherwise.

The bank will not tell them otherwise.

How to Know If You Are Affected

The first step is to find your current interest rate. It will be on your loan statement or accessible through your online banking. Write it down.

The second step is to understand what a borrower with your profile, loan size, and loan-to-value ratio is currently being offered by lenders in the market. This is where a broker adds direct value. We can pull live rate comparisons across 40+ lenders and tell you within a single conversation whether your current rate is competitive or whether you are sitting on a loyalty tax.

If the gap is meaningful and the numbers stack up after accounting for switching costs, refinancing is straightforward. We handle the process. Most clients who refinance through us spend less than two hours on their end across the entire process.

If the gap is not meaningful, you walk away knowing your rate is fine and you do not need to do anything. Either way, you have information you did not have before.

What to Do Right Now

If you have not reviewed your home loan in the last 12 to 18 months, that review is overdue. The rate environment has moved significantly. Lender appetite and pricing has shifted. The rate you agreed to in a different market under different conditions may no longer be the right rate for your situation today.

The review costs you nothing. The refinance, if it makes sense, costs you less than most people think and saves considerably more than most people expect.

The loyalty tax is real. The question is whether you are paying it.

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