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How Refinancing a Home Loan Works in Australia (2026)

Refinancing replaces your home loan with a new one, at a different lender or your own. Here's what actually changes, how long it takes, and why lenders knock applications back.

By Eleanor Hayes · · 11 min read

refinance home loanrefinancinghome loans australialoyalty taxserviceability bufferoffset account

How refinancing works · 2026

Switching lenders is a full application

your income, expenses and LVR are assessed again

so check whether you'd still qualify before you switch

old-vs-new variable rate gap ~3 bp by Dec 2025 · check your own rate

Source: RBA, 2026.

Refinancing sounds like a money-saving move you make from a position of strength. Often it's the opposite. The owners paying the highest rate on an ageing loan can be the ones least able to switch away from it, because switching re-opens the full assessment they passed years ago. Knowing how the process really works, before you apply, is what separates a clean switch from a knock-back.

This is a guide to refinancing a home loan in Australia. It covers what refinancing is, how you do it, what happens to your loan features, and why an application can fail. It doesn't tell you whether you should refinance, and it isn't personal advice. It gives you the framework so you can ask your lender or broker the right questions.

Key takeaways
  • Refinancing replaces your existing home loan with a new one, at a different lender or your current one (ASIC MoneySmart).
  • Moving to a new lender is a full loan application, not a rate tweak. Your income, expenses and loan-to-value ratio are assessed again, which is why some owners on older rates can't switch away from them.
  • Your loan features don't come with you. An offset account has to be re-established at the new lender.
  • The market-average gap between old and new loan rates has narrowed sharply since 2020, so the saving now lives in your rate, not an average. Check your own.

What is a home loan refinance?

Refinancing means replacing or extending your existing loan with a new one, from either the same or a different bank or financial institution (ASIC MoneySmart, 2019). It's how you move an existing home loan onto better terms without selling the property. This guide is about home loans specifically, not car, personal or credit-card refinancing, which run on different rules.

There are two shapes it can take. An external refinance moves your loan to a different lender. An internal refinance keeps you with your current lender but switches you to a different loan or rate, which MoneySmart calls refinancing internally. Both count as refinancing under the official definition, and the distinction shapes what it costs, how long it takes, and whether your application gets a fresh assessment.

External vs internal refinance at a glance
Feature External refinance Internal refinance
Lender A different lender Your current lender
What it does A new loan pays out and replaces the old one Switches you to a different loan or rate
Also called Switching lenders A rate review or retention offer
Discharge and paperwork Full discharge of the old loan Can skip the discharge and much of the paperwork
Assessment A fresh, full loan application Ask your lender what it involves

Refinancing is a live part of the market. In the June Quarter 2026, owner-occupiers refinanced $41.9 billion of housing loans with a different lender, on a seasonally adjusted basis (ABS Lending Indicators, June Quarter 2026). That figure was down 2.8% on the previous quarter and up 2.8% on the same quarter a year earlier. It's steady activity rather than a surge.

How do you refinance a home loan?

You refinance by comparing loans, applying to your chosen lender, and letting the new loan pay out and replace the old one. ASIC MoneySmart (2026) sets out four steps worth walking through before you apply, because the order saves you money.

  1. Ask your current lender for a better deal first. Tell them you're looking at a cheaper loan elsewhere. To keep your business, they may cut the rate on your current loan, which is the fastest and cheapest version of a refinance. Having at least 20% equity in your home gives you more to bargain with.
  2. Check lender's mortgage insurance. If you have less than 20% equity, a new loan may trigger lenders mortgage insurance (LMI), a one-off premium that protects the lender, not you. It can wipe out the saving from a lower rate. If you switch, ask your current lender for a refund of some of the LMI you already paid.
  3. Check the fees and charges. A switch can attract a discharge fee to close the old loan, an application fee on the new one, and a break fee if you're on a fixed rate. Stamp duty may apply depending on your state and whether the loan increases.
  4. Check the length of the new loan. Be firm on the term. Stretching what's left of your loan back out to a longer term lowers the repayment but raises the total interest you pay. Ask for a term close to what you have now.

Those are the costs in outline. The full picture, including how to run the break-even and what each fee typically covers, is a topic in itself: we've set out what it actually costs to refinance separately. The short version is that the test is a break-even. You compare the total up-front switching cost against the monthly saving, and work out how many months it takes to recover. ASIC's free mortgage switching calculator does that arithmetic for you.

Your loan features don't automatically come with you

Your offset account and redraw facility will not transfer automatically when you refinance. An offset is a separate transaction account whose balance reduces the portion of your loan charged interest. A redraw facility may let you access an amount based on extra repayments you have already made, subject to lender rules.

When you refinance with a new lender, the new loan pays off the balance remaining on your old loan. Extra repayments you have already made are reflected in that balance. If you do not redraw them before discharge, the new lender refinances the balance as it stands. If you redraw some or all of them, the old loan balance increases by the amount redrawn, so the amount to be refinanced increases as well. The example below compares the two outcomes.

Extra repayments aren't lost when you refinance Illustrative example · excludes interest, fees and other balance movements CURRENT POSITION BEFORE REFINANCING Loan balance before extra repayments $480,000 Extra repayments already made −$20,000 Current loan balance $460,000 Available redraw access: up to $20,000* *If used, the loan balance increases. Lender rules apply. IF YOU LEAVE IT IN Cash redrawn before discharge: $0 Amount to refinance: about $460,000† IF YOU REDRAW BEFORE DISCHARGE Cash redrawn before discharge: $20,000 Amount to refinance: about $480,000† In both paths, the old redraw facility closes when the old loan is discharged; any future redraw depends on the new loan. † Illustrative only. Excludes interest, fees and other balance movements. Redraw access and refinancing remain subject to lender rules and approval.

Illustrative example of what happens to extra repayments at refinance. Concept basis: ASIC MoneySmart.

If you may need access to that amount, ask the old lender before discharge what remains available and whether limits, fees or delays apply. Redrawing increases your loan balance and the amount you may need to refinance, which can affect interest, LVR and approval. If the property is, or may become, income-producing, seek tax advice before moving funds.

Redraw is only half of the transition risk: your new offset also needs to be established and correctly linked. MoneySmart gives an example in which a $50,000 offset that was not properly linked resulted in more than $3,000 of additional interest over one year. Before settlement, ask the new lender when the offset will become active. After settlement, confirm the offset is linked in online banking or on your statement.

How long does it take to refinance a home loan?

There's no reliable published timeframe for an Australian refinance, and the honest reason is that one step is outside the new lender's control. The discharge of your old loan is handled by your outgoing lender, who has little incentive to hurry. The ACCC found that "unclear, uncertain, costly and lengthy discharge processes" cause some borrowers to give up on switching altogether (ACCC, 2020).

So treat the timeline as lender-dependent rather than fixed. Ask your current lender, in writing, for its stated discharge turnaround, and ask the new lender how long its assessment and settlement usually take. Those two answers, added together, are your real estimate.

If you're refinancing while hunting for your next home, build in that uncertainty. A discharge that drags can collide with a settlement date, so line up the refinance timing with your buying plans rather than assuming it will be quick. A broker can help sequence the two so one doesn't hold up the other.

Does refinancing affect your credit score?

Yes, in a specific way: each application to a lender creates a credit enquiry on your file, and that enquiry stays on your Australian credit report for five years (OAIC). Being recorded for five years isn't the same as harming your score for five years; the two are separate things. One enquiry from a considered application is routine.

The risk is volume, not a single switch. Equifax notes that several credit applications in a short space of time can read as a sign of financial difficulty and can affect your report and score (Equifax, 2026). In plain terms, applying to one lender you've chosen is different from shotgunning applications across five at once.

A common worry is whether simply asking your current lender for a payout figure counts against you. A credit enquiry is recorded when a lender runs a credit check as part of an application for credit. Asking your existing lender what it would cost to close the loan isn't a new credit application, so on that definition it shouldn't create a new enquiry. If you want to check whether an enquiry was recorded, request a free copy of your credit report: the record a credit reporting body keeps of your credit accounts, applications and repayment history. You can get a free copy once every three months (OAIC).

When can you refinance a home loan?

In most cases you can refinance whenever you choose, but two things affect the timing and the cost. If you're on a fixed rate, switching before the fixed term ends can trigger a break fee, so the end of a fixed period is a natural window. And because a refinance is a fresh application, a very recent switch means a new set of enquiries and costs if you go again soon.

That's the mechanics of when you can. Whether it's the right moment is a separate decision that turns on your rate, your costs and your plans, and we cover when refinancing is worth it, and when it isn't on its own. The eligibility question and the worth-it question are easy to blur, so it helps to settle the first before you weigh the second.

Can you refinance with your own bank?

Yes, and MoneySmart tells you to try it first. Step one of the official process is to ask your current lender for a better deal before you look at moving (ASIC MoneySmart, 2026). Keeping your business may be worth a rate cut to them. This is often called a rate review or retention offer, and it's the cheapest refinance because it can skip the discharge and much of the paperwork.

Are older home loans still more expensive?

An older loan is a reason to check your rate, but its age alone does not prove that refinancing will save you money. A rate set years ago can drift from current pricing, partly because the market moves and partly because lenders often reserve their sharpest deals for new customers.

What the 2020 figures measured

In September 2020, the ACCC compared the average rates paid by different groups of owner-occupier borrowers on principal-and-interest loans (ACCC, 2020). Older loans paid more: the gap was 58 basis points for loans aged three to five years and 104 basis points for loans over ten years. One basis point is 0.01 percentage points. These were averages across different loan-age groups, not the change in one borrower's rate over time, and the new-loan average included both fixed- and variable-rate loans.

What had changed by 2025

By December 2025, the RBA reported a different comparison (RBA, 2026). Across the market, the average rate on all outstanding variable mortgages was only about 3 basis points above the average rate on new variable mortgages. This is not the over-ten-year gap falling to 3 basis points. The 2025 figure covers all outstanding variable loans, including borrowers who had already refinanced, so it is a different population, not a fresh reading of the older-loan group.

Two measures, not one trend 2020 ACCC loan-age groups vs a December 2025 RBA market average · different measures 2020 ACCC SNAPSHOT · SEPTEMBER 2020 New loans (fixed and variable) 2.62% Variable, 3–5 years old 3.20% · +58 bp Variable, over 10 years old 3.66% · +104 bp Averages across different loan-age groups; new-loan average includes fixed and variable DECEMBER 2025 RBA MARKET UPDATE All outstanding variable vs new variable loans about +3 bp Different population and measure, not a like-for-like update Loan age is a prompt to check your rate, not proof that refinancing will save you money.

The 2020 ACCC figures and the December 2025 RBA figure use different measures and populations, so they are not directly comparable. Sources: ACCC, 2020; RBA, 2026.

What this means for your loan

Your own rate may sit above or below these averages. If your loan is variable, compare it with the rate your lender offers comparable new customers, and ask whether it can match that rate or move you to a cheaper product. Then weigh any outside offer after allowing for fees, loan features and the remaining term.

If your loan is fixed, these variable-rate comparisons don't apply directly. Check when the fixed period ends, which variable rate would apply afterwards, and whether refinancing early would trigger a break cost.

Why a refinance gets knocked back

A refinance can be declined because it's a brand-new loan application, not a rate adjustment, so the lender re-tests your income, expenses and loan-to-value ratio from scratch (ASIC MoneySmart). Equity on paper doesn't rescue an application if the cash-flow assessment doesn't hold up. This is how a lender assesses your borrowing power, applied again to a loan you're already paying.

The sharpest edge is the serviceability buffer. APRA expects banks to assess new borrowers at an interest rate at least 3 percentage points above the loan's actual rate, a setting it confirmed unchanged in May 2026 (APRA, 2026). It's the 3% serviceability buffer, and two details decide who it catches. It's a floor, not a ceiling, so individual lenders can test above it. And it applies to authorised deposit-taking institutions, the banks and credit unions APRA regulates. Non-bank lenders aren't bound by it, which is why some owners who fail a bank's test can still refinance elsewhere.

This is the mechanism behind the owner who's stuck. Someone comfortably meeting repayments on an old loan can still fail assessment on a new one tested at the buffered rate, and so can't switch to the lower rate they can plainly afford. Whether staying put or looking at a non-bank lender is the better move is a genuine decision, not a given, and a licensed mortgage broker is the person to weigh it with. Before you apply anywhere, it's worth mapping where you stand: knest.ai's Home Loan Expert helps you map your borrowing position first so you go in with realistic expectations.

Where refinancing fits in a bigger buying plan

Refinancing isn't always about the loan you have; sometimes it's the first move toward the property you want next. Rising equity in your current home can, in principle, help fund a deposit on another one. That's a buying decision with a risk budget attached, not free money, and it re-tests your serviceability on a bigger total debt.

Because the risks are real, this cluster treats the equity path carefully rather than as an easy win. If you're weighing it, start with using your equity to buy the next property, which sets out how much equity is actually usable and where over-leverage creeps in. If you're thinking of drawing equity out as cash for another purpose, cash-out refinancing and what to watch covers the trade-offs. Both start from the same sober place: more borrowing is more risk, and the point is to see it clearly before you commit.

The bottom line

Refinancing a home loan in Australia replaces one loan with another, and the mechanics reward owners who prepare. Moving to a new lender is a full application, so your finances get re-assessed and your loan features don't carry over. The old headline saving from switching has narrowed at the market level, which makes checking your own rate, rather than trusting an average, the move that matters. And because rates have risen through 2026, with the cash rate at 4.60% as at 30 September 2026 (RBA), the case for reviewing your loan rests on your circumstances, not the direction of the market.

The cheapest first step is also the easiest: ask your current lender what it would offer you today, and compare that against what it offers new customers. From there, a broker can help you compare options and weigh whether a move stacks up, though only the lender decides whether to approve it.

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Frequently asked questions

What does it mean to refinance?

To refinance means to replace or extend your existing loan with a new one, from either the same lender or a different one (ASIC MoneySmart, 2019). For a home loan, it's how you move to better terms without selling the property. The new loan pays out and replaces the old one.

What is the 2% rule for refinancing?

There’s no Australian “2% rule”. It's a US rule of thumb with no standing here. MoneySmart does note that variable home loan rates on the market can differ by more than 2%, which is a reason to compare, but it isn't a switching threshold. The real test is a break-even: does the saving beat the switching cost?

Will I keep my offset account and redraw if I switch lenders?

No, not as facilities. Your extra repayments aren't lost: they already reduced your old balance, so the new lender refinances the smaller amount. But the redraw access to them doesn't carry over, so draw any cash you want before you discharge. The old offset account may close or change status, so move your funds and direct debits and set up a new offset if the new loan has one. An offset only saves interest when it's correctly linked, so check the link after settlement.

Does asking my lender for a payout figure commit me to leaving?

Asking for a payout or discharge figure is a question, not an application for credit, so on the standard definition of a credit enquiry it shouldn't create one or commit you to anything (OAIC). It's information you're entitled to. If you want to confirm nothing was recorded, you can check your credit report free once every three months.

Is it good or bad to refinance?

It depends on your rate, your costs and your plans, so there's no single answer. The framework is a break-even, weighed against whether you'd pass a fresh assessment. Start by comparing your current rate to what your lender offers new customers, then talk to a broker about whether a switch stacks up for you.

Sources

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