Home Loan Portability in Australia 2026: How a Mortgage Broker Can Help You Move Without Refinancing

For many Australians, upgrading or downsizing their home raises an immediate question: do you refinance your mortgage, or can you simply take your existing loan with you? Home loan portability — sometimes called a security swap — offers a third path that many borrowers overlook. Understanding when portability makes sense, and when refinancing is the smarter move, can save you thousands of dollars and weeks of paperwork.

What Is Home Loan Portability?

Home loan portability is a feature offered by many Australian lenders that allows you to transfer your existing mortgage from one property to another without closing the loan and opening a new one. The loan itself — including its interest rate, repayment schedule, and features such as an offset account — remains intact. Only the security property changes.

This process is formally known as a security swap. Instead of discharging your mortgage on the old property and applying for a new loan on the new one, your lender simply substitutes the security. The result is a seamless transition that preserves your existing loan terms.

Not all home loans include a portability feature. Whether your loan is portable depends on your lender's product terms, and some lenders charge a fee to exercise this option. A mortgage broker can quickly identify whether your current loan is portable and what conditions apply.

How the Security Swap Process Works

The portability process involves several steps that your lender and mortgage broker will coordinate on your behalf. Understanding the sequence helps you plan your property transaction effectively.

Step 1: Confirm Eligibility

Your first step is to contact your lender — or ask your mortgage broker to do so — to confirm that your loan product supports portability. Not all variable or fixed-rate loans include this feature, and some lenders restrict portability to owner-occupier loans only.

Step 2: Property Valuation

The lender will commission a valuation of the new property. If the new property is worth less than your current loan balance, you may need to make a lump-sum repayment to bring the loan-to-value ratio (LVR) within acceptable limits. If the new property is more expensive, you may need to top up the loan — which triggers a full credit assessment under APRA's responsible lending standards.

Step 3: Settlement Coordination

There are two common settlement scenarios. In a simultaneous settlement, the sale of your old property and the purchase of the new one occur on the same day, creating a seamless transition. In a deferred settlement, if you sell before you buy, the lender may hold your sale proceeds in a term deposit as security for a period — typically three to six months — while you search for your next home.

Step 4: Documentation and Approval

Even though the loan itself does not change, the lender must approve the new security property. This involves reviewing the property's title, zoning, and condition. Your mortgage broker can manage this documentation process and liaise with the lender on your behalf.

When Portability Makes Financial Sense

Home loan portability is not always the right choice. Its value depends heavily on your current loan terms and the broader interest rate environment. There are several situations where a security swap is clearly advantageous.

• You are on a competitive fixed rate — If your current fixed rate is below market rates, breaking the loan to refinance could trigger break costs ranging from $8,000 to $15,000 on a $400,000 loan with two years remaining. Portability lets you keep that rate.
• You want to avoid discharge and establishment fees — Refinancing typically involves discharge fees from your current lender, application fees from the new lender, and government mortgage registration costs. Portability eliminates most of these.
• Your LMI situation is complex — If you have less than 20% equity, switching lenders could trigger a new Lenders Mortgage Insurance (LMI) premium. Portability avoids this by keeping the existing loan in place.
• You value continuity — Keeping your existing offset account, redraw facility, and repayment history intact can simplify your financial management during a stressful property transition.

When Refinancing May Be the Better Option

Portability is not always the optimal strategy. There are circumstances where refinancing — despite its upfront costs — delivers better long-term outcomes.

• Your current rate is uncompetitive — If your existing rate is 0.40% to 0.50% higher than the best available market rates, the long-term interest savings from refinancing can far outweigh the switching costs. In 2026, competitive variable rates start from approximately 5.08% per annum.
• You need to borrow more — If the new property is significantly more expensive and you need to increase your loan substantially, a full refinance may offer access to better loan structures, features, and lender incentives such as cashback offers.
• Your financial circumstances have improved — If your income has grown or your credit profile has strengthened since you took out your original loan, refinancing may unlock a lower rate or better terms that were not available to you previously.
• Your current lender's product is outdated — Loan products evolve. If your existing loan lacks features such as an offset account, flexible repayments, or a competitive redraw facility, refinancing to a modern product may deliver ongoing benefits.

Common Mistakes to Avoid

Borrowers who attempt to navigate portability without professional guidance often encounter avoidable problems. Understanding these pitfalls helps you make a more informed decision.

• Assuming all loans are portable — Many borrowers discover too late that their loan does not include a portability feature. Always confirm this before committing to a property purchase timeline.
• Overlooking the top-up assessment — If you need to borrow more for the new property, the additional amount is subject to APRA's full serviceability assessment, including the 3% buffer. Borrowers who have taken on additional debt since their original loan may find their borrowing capacity has changed.
• Ignoring the portability fee — Some lenders charge a fee of $200 to $500 to process a security swap. While modest compared to refinancing costs, this should be factored into your comparison.
• Failing to compare the market — Even if portability is available, it is worth asking your mortgage broker to run a market comparison. The convenience of portability should not prevent you from identifying a materially better deal elsewhere.
• Mismanaging settlement timing — Simultaneous settlement requires precise coordination between your conveyancer, the lender, and both parties' solicitors. Delays on either side can create significant complications. A mortgage broker experienced in portability transactions can help manage this risk.

Australian Regulatory Context

Home loan portability operates within Australia's broader responsible lending framework, overseen by the Australian Securities and Investments Commission (ASIC) and the Australian Prudential Regulation Authority (APRA).

Under ASIC's Best Interests Duty (BID), which applies to all mortgage brokers, your broker is legally required to act in your best interests when recommending whether to use portability or refinance. This means they must consider your overall financial situation, not just the convenience of keeping your existing loan.

APRA's responsible lending standards require lenders to assess serviceability on any new or increased borrowing, including top-ups associated with a portability transaction. The current serviceability buffer of 3% above the loan's interest rate applies to any additional borrowing. APRA's DTI framework, which from 1 February 2026 caps high-debt lending at 20% of new loan volumes for ADIs, may also affect your ability to top up a portable loan if your total debt-to-income ratio is at or above 6.0.

The Australian Financial Complaints Authority (AFCA) provides a free dispute resolution service if you believe your lender or broker has not acted appropriately in handling a portability request. All licensed mortgage brokers must be AFCA members.

Mortgage brokers must hold an Australian Credit Licence (ACL) or operate as an authorised credit representative under an ACL holder. They must also be members of an industry association such as the Mortgage and Finance Association of Australia (MFAA) or the Finance Brokers Association of Australia (FBAA), which impose additional professional standards including mandatory continuing professional development.

Questions to Ask Your Mortgage Broker

Before deciding between portability and refinancing, use these questions to guide your conversation with a mortgage broker.

• Is my current loan portable, and what are the conditions and fees?
• What is my current interest rate compared to the best available rates in the market today?
• If I refinance, what are the total switching costs — including discharge fees, application fees, and LMI if applicable?
• How long would it take for the interest savings from refinancing to offset the switching costs?
• If I need to borrow more for the new property, will I pass the current serviceability assessment?
• What is my current debt-to-income ratio, and does APRA's DTI framework affect my options?
• What are the settlement timing risks, and how will you manage them?
• Are there any cashback offers or lender incentives that make refinancing more attractive right now?

How MyMoney® Can Help

Deciding between home loan portability and refinancing is not a one-size-fits-all calculation. The right answer depends on your current loan terms, the new property's value, your financial circumstances, and the current interest rate environment — all factors that a qualified mortgage broker can assess quickly and accurately.

MyMoney® connects Australian borrowers with experienced, licensed mortgage brokers who understand the full range of options available in 2026. Whether you are upgrading, downsizing, or relocating, a broker can run the numbers on portability versus refinancing and recommend the path that genuinely serves your interests.

Post a Brief on MyMoney® to describe your situation and receive tailored proposals from qualified mortgage brokers. Or browse our mortgage broker professionals to find a specialist in your area today.