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Refinancing guide

How Home Loan Refinancing Works in Australia

What happens when you switch home loans, what it costs and how to tell whether you will come out ahead.

how-home-loan-refinancing-works

Refinancing at a glance

Will switching loans leave you better off?

  • It may be worth a look if you:

    • Could get a lower rate after allowing for fees
    • Want an offset account or more flexible repayments
    • Have built up equity and need funds for a clear purpose
    • Want to pay off your loan sooner
  • Check the numbers first if you:

    • Are still in a fixed rate period
    • Plan to sell or repay the loan soon
    • Would need to pay mortgage insurance again
    • Can only reduce repayments by extending the loan term

Start with the loan you have

Most people who ask me about refinancing want one of 2 things: a lower rate, or money out of the house for something specific. The first step is the same either way. Ring your bank and ask what it will do on the rate you have now. If the bank won't move, that's when the numbers below start to matter.

Refinancing replaces your mortgage with a new loan. It pays out the existing balance, then you make repayments under the new terms. You keep your home; the rate, lender and features can change.

If you're already a Hunter Galloway client, we review your loan every 12 months. Sometimes a rate adjustment with the current bank is enough. A full refinance needs to earn its cost.

Types of home loan refinancing

You can replace the balance you owe, ask for extra borrowing against your equity, or change the features and term. Tell me which problem you're trying to solve so we compare the right loans.

A fixed rate gives you a set rate for an agreed period. A variable loan usually gives you more room for extra repayments and an offset, though its rate can rise or fall. You can split the balance between both. We'll check the cost and rules for the features you'd use.

Why do homeowners refinance?

  • Reduce the cost of your loan

    A lower rate or fewer fees can leave more money in your budget. Keeping your repayments at the old level may help you pay off the loan sooner.

  • Get features you will use

    An offset account, extra repayments or a more suitable fixed and variable split may be worth changing loans for. Check the cost of those features too.

  • Use equity for your next step

    You may be able to borrow against the equity in your home for renovations or another property. The lender still needs to approve the extra borrowing.

  • Bring other debts into the loan

    Combining debts can simplify repayments, but stretching short-term debt over a mortgage term may cost more. Your home also becomes security for that debt.

If an offset account is the reason for changing, check its fee and how much you'd usually keep in it. If you're moving other debts into the mortgage, read our debt consolidation guide and plan how quickly you'll repay that portion.

How home loan refinancing works: the 5 steps

  1. Work out what you want to change
    Find your balance, rate, remaining term and fees. Tell us what you'd like the new loan to achieve.
  2. Compare loans and the cost of switching
    We compare your bank's offer with suitable loans using the same balance and remaining term, then add switching costs.
  3. Apply and provide your documents
    The lender checks income, spending, debts and repayment history. Send the records it needs before the application goes in.
  4. The lender checks the property and approves the loan
    The lender values the property and completes its assessment. We check the approved amount and conditions before you sign the new loan documents.
  5. Your new loan pays out the old one
    The new lender pays out the old loan at settlement. Check the first repayment, account transfers and any direct debits that need moving.
A couple discussing home loan documents with a lending adviser

What documents will you need?

Start with your latest home loan statement, recent payslips and details of savings, living costs and other debts. We also need identification. Rental or business income can require extra evidence.

For a self-employed application, I'll check the lender's income requirements before you gather a pile of documents. Some refinance options use different evidence, but they still need an assessment.

How does the bank decide whether you can afford it?

The bank checks the income left after tax, living costs and other debts. Credit card limits count even when there's nothing owing. It also allows for higher mortgage repayments, generally testing at least 3% above the actual rate.

APRA allows banks to make limited exceptions, including for eligible refinances. A good repayment history may help that discussion, but it doesn't give you an automatic exemption. If your income has fallen, I'd check which options fit before lodging an application.

You can check your credit reports for errors before applying. MoneySmart lists Experian and Equifax as Australia’s 2 main credit reporting bodies, with a free report available every 3 months. See how to get your credit reports.

How long does refinancing take?

Allow a few weeks for the application, valuation, loan documents and payout. Missing income records or delays with the old bank can add time. If a fixed period is ending or you need renovation funds by a date, tell us at the start.

A faster-settlement service can shorten the handover after approval. The lender still has to assess you first.

What if the approved loan is less than the payout?

The payout can include interest up to settlement and closing costs, so it can be higher than the balance on your last statement. We'll compare the payout figure with the approved loan before booking the switch.

If there's a gap, you'd need to cover it with available cash or have the lender approve a different amount or structure. If neither works, the refinance can't settle as planned. Keep making payments on the existing loan until the payout is complete.

How much does it cost to refinance a home loan in Australia?

I want the full switching cost before calling a lower rate a saving. The main items are below. A break cost or a new LMI premium can change the decision considerably.

Costs to check before refinancing

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CostWhat to check
Discharge or settlement feeYour current lender may charge to close the loan and release its mortgage.
Fixed-rate break costAsk your lender for a current quote if you are leaving a fixed rate early. The amount can change with the payout date and market rates.
Application, valuation and legal costsCheck which fees the new lender charges, includes or waives. Do not assume every advertised fee waiver applies to your loan.
Government and title chargesMortgage discharge, registration and other title-related charges vary by state or territory and transaction.
Lenders mortgage insurance (LMI)LMI may apply if you borrow more than 80% of the property value, unless an exemption applies. Cover paid on the old loan does not automatically transfer.
Ongoing package or account feesInclude annual package fees and the cost of any offset account when comparing the new loan.

Read more about fixed rate break costs before ending a fixed loan. A comparison rate is useful because it includes the interest rate and most fees, but it uses a standard loan example and does not include every possible cost.

How long will it take to recover the switching costs?

Divide the upfront cost by the monthly saving. That gives you a simple break-even point.

  1. $1,250 to switch
    The upfront switching cost used in this example. Ask for a quote for your own loan.
  2. $150 saved a month
    The monthly saving after allowing for ongoing fees.
  3. About 9 months to break even
    $1,250 divided by $150 is about 8.3 months. After 24 months, you would be $2,350 ahead.

The example pays switching costs from savings and assumes the monthly saving is after ongoing fees.

In this example, you would be about $550 ahead after 12 months. If you plan to sell before the break-even point, switching may not recover its costs in time.

Does a cashback offer make refinancing worthwhile?

Include any cashback in the calculation, along with when it arrives and whether you might have to repay it. Then compare the rate and fees over the period you'll keep the loan.

An introductory rate needs the same treatment. Check its end date and the rate that follows.

A lower repayment can still cost you more

Here's the comparison I run first. Same $500k balance, same 25 years left. First change the rate and keep the term. Then keep that new rate and extend the term. The third row is the one people miss.

Example repayments and interest on a $500k loan

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Loan optionMonthly repaymentTotal interest
Keep 6%, with 25 years left$3,222$466,452
Refinance to 5.5%, keep 25 years$3,070$421,131
Refinance to 5.5%, restart at 30 years$2,839$522,020

Calculated repayments include principal and interest on a $500k loan, with the rate unchanged for the full term. Fees and offsets are excluded. Figures are rounded.

At 5.5% over the remaining 25 years, the repayment falls by about $151 a month and total interest drops by about $45k before switching costs. The monthly difference uses the unrounded repayments.

Restart at 30 years and the repayment drops further. But that extra 5 years adds about $101k in interest compared with keeping 25 years at the same new rate. You even pay more interest than on the original 6% loan.

A longer term may still help if you need breathing room each month. I'd show you both costs so you can decide. Try the mortgage repayment calculator with your own balance and remaining term.

If you've got 15 years left, we can compare loans over 15 years. You can also keep the term and make extra repayments within the new lender's rules. Our extra repayment calculator shows how paying more changes the loan.

See the cost of staying and switching

How does refinancing work with equity?

Equity is the home's value less what you owe. To spend some of it, you generally need to borrow more, and the lender checks whether you can afford that larger debt.

Say the home is worth $700k and you owe $400k. Borrowing up to 80% of the value would mean a $560k loan, leaving $160k of possible extra borrowing before fees and the lender's other checks.

You can ask for less. Here's the same home with $100k added for renovations.

  • $400k existing loan

    What you owe before refinancing.

  • $100k extra borrowing

    Funds for an approved purpose, such as renovations.

  • $500k new loan

    The old balance plus the extra funds, before fees. About 71% of a $700k valuation.

We'll check the valuation, purpose of the funds and repayments on the bigger loan. The equity calculator gives a starting estimate. Our loan-to-value calculator shows the share of your home's value you would be borrowing.

More equity can help even if you do not want extra cash

If your home is worth more or the balance is lower, you may qualify for a different pricing tier. The lender needs to accept the value before relying on it. A valuation below what you expected can reduce the available loan or introduce LMI.

Can you refinance to pay for an extension?

For a small renovation, an approved loan increase may be enough. Structural work or an extension may need a construction loan, plans and a building contract.

A construction lender generally releases money to the builder in stages. Interest on that portion is charged on the money drawn. Keep the existing mortgage repayments in the budget while the work is underway.

Send us the plans and budget, including any work you'll do yourself. We'll check the funding approach before you commit to the builder. Our construction loan guide explains the process.

When refinancing may not be worth it

I'd hold off if you expect to sell or repay the loan before recovering the costs, if a break cost uses up the saving, or if a fresh LMI premium makes the switch expensive.

If the current bank's offer comes out ahead after the comparison, staying can be the better result. You don't need to change lenders for the review to have been useful.

Check the accounts and features before moving

An offset is a separate account whose balance reduces the loan balance charged interest. Redraw is access to extra repayments already made into the loan. Their access rules can differ, so check transfer limits, fees and what happens as the loan is paid out.

I'd also check the app you'll use every week. Can you see each loan split, move money easily and manage multiple offsets if you need them? A small rate saving can feel less useful if the new setup makes your everyday banking harder.

Before settlement, agree where the old offset money goes and how available redraw affects the payout. If the property may later become an investment, get tax advice before moving money between the loan and accounts.

Should you wait for an RBA rate cut?

You can't know where rates will go next. Compare the offers available now and check again if rates change before settlement. A fixed rate gives certainty for its agreed period; whether it ends up cheaper depends on what variable rates do.

Common questions about refinancing a home loan

Compare staying with switching on your loan

Send us your latest statement and the rate your bank offered to keep you. We'll compare it over the same remaining term and show you the break-even in months.

or call 1300 088 065

We'll explain your options and any costs before you proceed.

The Hunter Galloway mortgage broking team

Experience and sources

How this guide was checked

We compared the repayments using the same $500k starting balance and checked the calculations, MoneySmart guidance and APRA sources on 10 September 2026. The examples hold rates constant so you can see the effect of the term.

Written byNathan VecchioDirector & Mortgage Broker

Loan approval depends on the lender’s current requirements and your circumstances. Rates, fees and offers can change. The examples are calculations, not current loan offers; they exclude tax effects and any costs not specified.

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