Refinancing, in Plain English: What It Is, Why People Switch, and When It Actually Makes Sense

If you've had your home loan for more than two years and never reviewed it, there's a reasonable chance you're paying more than you need to. Not because you've done anything wrong. Because that's how the system is designed.

Refinancing is the single most underused tool Australian homeowners have. It's also one of the most misunderstood. So here's the plain version: what it actually is, why it works, and when it makes sense to consider it.

What is refinancing, really?

Refinancing is just this: replacing your current home loan with a better one from a different lender. That's it. No fine print, no catch.

Your existing lender gets paid out. A new lender takes over the loan. Your property stays exactly where it is. Your repayments now go to a different bank, usually at a different rate, with different features. The home, the title, the day-to-day, none of that changes.

Some people refinance with their existing lender too (called a "product switch" or internal refinance). That's not technically refinancing in the strict sense, but it solves the same problem: getting your loan to better terms.

Think of it like switching phone providers

If your phone provider suddenly charged you more than everyone else for the same service, you'd switch in a heartbeat. You wouldn't feel bad about it. You wouldn't worry about "loyalty." You'd just compare, switch, and move on.

A home loan works the same way. The only reason most people don't switch is that they never check. The bank is hoping you don't.

Why people refinance: six common reasons

Refinancing isn't one decision; it's a category of decisions. Different people refinance for different reasons. The six most common ones we see:

1. Get a lower interest rate. The most obvious reason. Even a 0.4% reduction on a $600,000 loan saves around $2,400 per year, or roughly $72,000 over a 30-year term if the rate gap holds.
2. Reduce monthly repayments. Either through a lower rate or by extending the loan term. The latter costs more in total interest but eases cash flow when you need it.
3. Access equity from your property. If your home is worth $1.1 million and your loan balance is $600,000, you have $500,000 of equity. Refinancing can release a portion of that for renovations, investment property deposits, or other purposes.
4. Consolidate debt into one repayment. Rolling a credit card balance or car loan into your mortgage at a much lower interest rate. Often dramatically cuts your overall monthly outgoings, though over a longer period.
5. Restructure a loan that no longer fits. Maybe you started self-employed and now you're a PAYG employee (or vice versa). Maybe you want to split your loan between fixed and variable. Maybe your current loan doesn't allow extra repayments.
6. Get features your current bank doesn't offer. Offset accounts, redraw, multiple splits, package discounts, fee waivers. These can save more than rate alone over time.

One reason is enough. You don't need to be ticking all six boxes to make refinancing worth considering.

What the numbers actually look like

Most people underestimate the difference a small rate change makes. Here's a real example, using round numbers.

Imagine you bought a home three years ago. Your loan balance today is $500,000, with 27 years remaining on a 30-year term. Your current variable rate is 6.39%. You discover, after speaking to a broker, that you could refinance to 5.79% with another major lender.

That's a 0.60% rate change. Not dramatic. But $61,500 across the life of the loan is real money. And we see rate differences larger than this regularly. A 0.80% gap on the same loan saves closer to $82,000.

Now, refinancing isn't free. Expect to pay around $500 to $1,000 in discharge fees from your old lender, plus government registration fees of around $150 to $400 depending on your state. Some lenders offer cashback offers (commonly $2,000 to $4,000) that more than offset these costs. A good broker will model the full picture before you commit, including the break-even point.

"A lot has changed since you signed"

The case for at least reviewing your loan is stronger than most people realise. If you bought your home three or more years ago, three things have probably changed:

• Your income has likely gone up. Wage growth in Australia averaged around 3.8% annually over the past few years. That changes what lenders will offer you.
• Your property is probably worth more. Even with property market fluctuations, most owner-occupied homes bought before 2023 are worth meaningfully more today. Higher equity unlocks better loan-to-value bands and lower rates.
• The lending market has 40+ banks and private lenders actively competing for your business. Your bank isn't your only option, and many borrowers don't realise how aggressive the competition is for quality refinance customers.

Your bank knows all of this. They're just not going to volunteer a better rate. Why would they? You're already paying the current one.

The loyalty tax: why your existing rate is probably not their best

Here's the uncomfortable truth: banks often reserve their sharpest rates for new customers, not loyal existing ones. It's not personal. It's how the system works. New customers represent growth; existing ones represent margin. The longer you stay without negotiating, the more the gap widens.

This is sometimes called the "loyalty tax." In 2018, the ACCC produced a report on residential mortgage pricing that found existing borrowers were paying significantly more on average than new ones with equivalent loan profiles. The gap has fluctuated since but the pattern persists.

Refinancing is the mechanism by which you check whether you're affected.

When refinancing doesn't make sense

To be honest with you: refinancing isn't always the right move. The cases where we typically advise clients against refinancing:

• You're close to selling the property. If you're going to sell within 12 to 18 months, the savings probably won't outpace the discharge and setup costs.
• You have fixed-rate break costs. Breaking a fixed-rate loan before the term ends can cost tens of thousands of dollars depending on the size of the loan and how rates have moved. Sometimes it still makes sense; usually it doesn't.
• Your current loan has features you'd lose. Some legacy loans have grandfathered terms (especially older interest-only investment loans) that newer products can't replicate.
• Your circumstances make qualifying harder than it was last time. Recently self-employed, recent job change, new dependents on a tighter budget. Sometimes the better strategy is to wait six months and then refinance from a stronger position.

A good broker will tell you when refinancing isn't in your interest, not just when it is.

How long does it actually take?

The whole refinancing process, from initial conversation to settlement, typically runs four to six weeks. Roughly:

• Week 1: Initial review, gather documents (payslips, ID, current loan statements, property details), compare lenders.
• Week 2 to 3: Submit application, lender assessment, valuation of your property.
• Week 3 to 4: Formal approval, loan documents issued and signed.
• Week 5 to 6: Settlement: new lender pays out old lender, new loan starts.

Most of the work happens in the first two weeks. After that, you're largely waiting for the lender's process to play out.

So, should you refinance?

The honest answer is: we don't know yet, but it's almost always worth a 15-minute review to find out. If your loan is more than two years old, the case for at least checking is strong. If your rate starts with a "6" and you're a PAYG owner-occupier, the case is even stronger.

Refinancing isn't a commitment. The review is. From there, you decide whether to act on what you find.