Home Loan Refinancing in Australia: How It Works, What It Costs, and How to Compare Options

Refinancing a home loan: the idea in plain terms

Home loan refinancing is the process of replacing your existing mortgage with another home loan that you believe better suits your needs. In practical terms, the balance of your loan carries across, but the new loan comes with its own terms, interest rate structure and fees.

Many homeowners start thinking about refinancing when they’re unhappy with their current loan—perhaps the interest rate no longer feels competitive, fees have become frustrating, or their circumstances have changed and they want a different kind of loan. Refinancing can also be used as a strategy to ensure your home loan supports your financial priorities, rather than shaping them for you.

It helps to think of refinancing as taking the same debt and putting it under a new set of rules. Those rules might include a different interest rate, different ongoing fees, different features, or a different loan type altogether.

Two main pathways: internal vs external refinancing

Refinancing generally falls into one of two categories:

• Internal refinancing: switching to a different home loan product with your current lender.
• External refinancing: moving your home loan to a different lender.

Before assuming the best option is somewhere else, it can be worth checking what your current lender is willing to offer. If they can’t improve your rate or you’re unhappy with their service, you may decide to compare options with other lenders.

Either way, refinancing can feel a lot like applying for a home loan again. A lender will typically reassess your finances to confirm you can repay the new debt under the new loan’s conditions.

Why homeowners refinance

People refinance for different reasons, but the common thread is the search for a loan that better matches their goals. Depending on the loan you move to, refinancing may help you:

• Seek a lower interest rate.
• Change to more attractive fees (or a fee structure that suits you better).
• Move to a different type of home loan—potentially one with different features.
• Consolidate other debts into your home loan.

Debt consolidation is often discussed in the context of refinancing because some other liabilities—such as credit card debt or a personal loan—may carry higher (often double-digit) interest rates. Rolling that debt into your home loan can put it under your home loan interest rate, which is typically lower (often single-digit). Whether that helps you overall depends on your circumstances and the total costs involved, so it’s something to consider carefully as part of your comparison.

When timing matters: rate forecasts and fixed-rate expiries

Timing can be an important part of the refinancing decision. If you’re considering refinancing because of a forecast rate hike or because your fixed-rate period is ending soon, acting sooner rather than later may help you avoid paying more than you’d like if you miss the window to refinance in time.

Fixed and variable loans can also differ in switching costs. If you’re on a fixed interest rate home loan, you may want to wait until your fixed term expires to avoid potentially expensive break fees. If you’re on a variable rate home loan, you’ll typically pay less in fees when refinancing.

Equity and LVR: a common benchmark to know

Unlike buying a home, refinancing doesn’t usually require a traditional deposit. What matters instead is your equity—how much of the property you effectively “own” based on your principal repayments (and the property’s value).

A commonly referenced guideline is having at least 20% equity before refinancing. That usually corresponds to a loan-to-value ratio (LVR) below 80%, which can help you avoid paying lenders mortgage insurance (LMI).

If you have less than 20% equity, you may need to pay LMI again when switching lenders, as LMI is generally not transferable between lenders. The more equity you have—and the stronger your credit—the better your chances may be of qualifying for a more competitive deal.

The costs of refinancing: what to check before you apply

Refinancing is not free, and costs can vary based on your lender, your loan type and the kind of refinance you’re doing. It’s important to identify potential fees early so you can judge whether the benefits outweigh the costs.

Costs that may apply can include:

• Discharge fees charged by your current lender to release the mortgage.
• Application fees charged by the new lender for setting up the new loan.
• Break fees that may apply if you exit a fixed-rate loan before the fixed term ends.
• Mortgage registration fees that can apply in some circumstances.

The first practical step for many borrowers is to check their current loan’s terms and conditions and ask their lender what fees they would charge for switching. Once you have a clearer picture of your likely exit costs, it becomes easier to compare new loans on a like-for-like basis.

Stamp duty and refinancing: usually not part of the equation

Stamp duty is generally a home buying cost rather than a home loan cost, because it is typically imposed by states and territories during the sale of a property. Since refinancing usually involves switching home loans rather than buying or selling the property, you generally won’t have to pay stamp duty when refinancing.

A possible exception is when the title or ownership details are changing. For example, if the name of the borrower changes, stamp duty may apply. If you’re unsure, you can seek guidance from an expert mortgage broker or your state’s relevant revenue office.

How to compare home loans when refinancing

Once you understand your current loan and potential refinancing costs, the next step is comparing a wide range of home loan options to find a product that suits you. Comparisons commonly focus on:

• Interest rates
• Fees (upfront and ongoing)
• Features that may matter to you
• Comparison rate, which can help you assess the overall cost of a loan

Some comparison services allow you to assess loans from a range of lenders and then apply online if you find a suitable option. Some also offer access to home loan specialists who can answer questions and guide you through the application process.

One important limitation to keep in mind: some comparison services do not compare all brands in the market or all products offered by all brands, and at times certain brands or products may not be available or offered to you. This is worth considering when you’re building a shortlist and deciding whether you’ve looked widely enough.

A practical step-by-step outline of the refinancing process

While details vary by lender, refinancing commonly follows a similar sequence. The process can feel complex, but breaking it into steps can make it more manageable.

• 1) Gather your current loan details. Confirm your interest rate, repayments and any potential break costs or other exit fees. Think about what changes would help you meet your personal and financial goals.
• 2) Compare available options. Assess loans based on rates, fees, features and the comparison rate. Build a shortlist of loans that fit what you’re trying to achieve.
• 3) Clarify your property value. Some services offer a free property report with an estimated value and comparable recent sales in your area to help you understand what similar properties are selling for nearby.
• 4) Apply to refinance. Once you’ve selected a loan, you submit an application. The lender will reassess your finances as part of the approval process.
• 5) Receive approval. Refinancing generally involves receiving formal approval from the new lender.
• 6) Complete and sign documents. Your new lender will send documents, including the contract for the new home loan, for you to complete and sign.
• 7) Notify your current lender. A discharge form is sent to your old lender to notify them of the refinance and which lender to release the home loan to.
• 8) Settlement and switch-over. Once documentation is approved, you proceed to settlement. The new lender replaces the old lender on the title deeds and pays out the old loan amount using the new loan funds.

How long does refinancing take?

The timeframe can depend on the lender and the specifics of your application. Some lenders may complete refinancing in as little as two to three weeks, while others can take longer—sometimes up to 60 days or more.

If timing is important to you—such as when a fixed-rate period is ending—allowing enough lead time can be a practical way to reduce the risk of delays affecting your outcome.

How often can you refinance?

In many cases, you can refinance your mortgage at any time. That said, whether it’s a good idea depends on the numbers: you’ll want to ensure the costs of refinancing don’t outweigh the benefits, and that you have sufficient equity to refinance without paying LMI (often framed as at least 20% equity).

Hypothetically, you can refinance whenever there’s a better rate on offer—but the decision is usually more nuanced than rate alone. Fees, features, loan structure and your personal circumstances all matter.

Over the long term, refinancing frequency can vary widely. You might refinance several times in one decade and fewer times in another, depending on your financial circumstances and movements in the home loan interest rate market.

Credit score considerations: what refinancing can do to your file

Refinancing typically requires a formal credit enquiry, and that enquiry will appear on your credit history for five years. For many borrowers, refinancing will have minimal impact on their credit score—particularly if they haven’t applied for other credit recently.

However, it’s important to understand that too many credit enquiries in a short period can lower your credit score. Credit reporting bodies generally do not distinguish between successful and unsuccessful applications when assessing your score. What matters is the volume of applications and the number of recent enquiries.

Maintaining a healthy credit file is largely about making repayments as scheduled on your new home loan and any other debts you might have, such as a credit card or personal loan. If you’re concerned about the state of your credit report before applying, some mortgage brokers can review it without impacting your credit score.

Do you need a lawyer or conveyancer to refinance?

In many cases, you generally won’t need a conveyancer or lawyer to refinance, because legal professionals typically become involved with sales contracts and property settlement. If you’re simply changing home loan contracts, there may be no need for one.

That said, a home loan contract is a legal document. You may feel more comfortable having it reviewed by a legal professional, but it’s worth noting that doing so can add to your total costs.

Building a simple refinancing checklist

Refinancing decisions can become clearer when you turn them into a structured review. An annual review—sometimes described as a “home loan health check”—can help you confirm whether your current loan still suits you.

• Check your current rate, repayments, fees and features.
• Identify any break fees or discharge costs that may apply.
• Estimate your equity and consider whether you’re near or above 20% equity (LVR under 80%).
• Compare loans on rates, fees, features and the comparison rate.
• Consider your timing—especially if a fixed-rate period is ending soon.
• Be mindful of multiple applications and credit enquiries.

Getting help: brokers, specialists and tailored guidance

Because refinancing can be complex, some homeowners choose to speak with mortgage brokers or home loan specialists—particularly when comparing multiple options, estimating costs, or preparing an application.

For more tailored guidance on when refinancing could benefit you, you may also consider speaking to a financial advisor or a mortgage broker. The goal is to ensure you’re comparing the right details, understanding the costs involved, and choosing a loan that genuinely supports your financial priorities.