Portable Home Loans: Taking It With You
ADS Team
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September 7, 2026
4 days ago
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In short: Portability, sometimes called security substitution, lets you keep your existing loan and swap the property securing it. It avoids a full refinance - no new application, no discharge and re-establishment, and no break costs on a fixed loan. It works cleanly only when the timing lines up and the new property meets the lender's criteria.
Key takeaways
- Portability substitutes the security, keeping the loan account intact.
- Its main value is avoiding break costs on a fixed loan and preserving a good rate.
- Simultaneous settlement is usually required - a gap complicates it substantially.
- You cannot generally increase the loan amount through portability alone.
What does portability save you?
Three things, and their combined value can be significant.
- Break costs on a fixed loan. Selling normally discharges the loan and triggers break costs. Porting keeps the fixed contract alive.
- Your existing rate. If you are on a rate better than what is currently offered - which is common for borrowers who fixed at the right moment - refinancing means losing it.
- Application friction. No new full application, no new establishment fees, no fresh assessment of income in most cases, and no gap in your loan history.
For a borrower on a low fixed rate with years to run, portability can be worth many thousands of dollars compared with discharging and starting again.
What has to line up?
| Requirement | Detail |
|---|---|
| Simultaneous settlement | Sale and purchase usually settle on the same day |
| New property acceptable | Meets the lender's security and valuation criteria |
| Same borrowers | Adding or removing a borrower generally requires a new application |
| Loan amount unchanged | An increase is a separate top-up application |
| LVR still acceptable | Assessed against the new property's value |
| Fee payable | A security substitution fee usually applies - much smaller than break costs |
The simultaneous settlement requirement is the one that most often defeats portability in practice. Real property chains rarely cooperate, and a gap between selling and buying means the loan has no security in the interim - which most lenders will not permit.
What are the alternatives when it does not work?
If the timing will not line up, there are two main paths.
Bridging finance covers the gap between buying and selling, letting you settle the purchase before the sale completes. It costs more and adds complexity, but it solves the timing problem directly.
Discharge and refinance is the simple option: pay out the loan on sale, take a new loan on the purchase. Accept the break costs if fixed, and treat it as an opportunity to reprice given you are re-entering the market anyway.
Worth asking your lender early. Portability terms vary considerably, some products do not offer it at all, and finding out during a settlement is too late.
Frequently asked questions
What is loan portability?
A feature allowing you to substitute the property securing your loan when you move, keeping the same loan account, rate and terms. It is sometimes called security substitution.
Does portability avoid break costs on a fixed loan?
Yes - that is its main financial benefit. Because the loan contract continues rather than being discharged, the fixed rate is not broken and break costs do not arise.
Can I borrow more when I port my loan?
Not through portability alone. Increasing the loan amount requires a separate top-up or a new application, assessed on current serviceability.
What if my sale and purchase settle on different days?
Most lenders require simultaneous settlement for portability. Where the dates differ, options include bridging finance to cover the gap, or discharging and taking a new loan.
Related reading
- Break Costs on Fixed Loans: How They Are Calculated
- Bridging Finance: Buying Before You Sell
- Refinancing Your Home Loan: The Complete 2026 Process
Sources
- Moneysmart - home loans — ASIC
- Banking Code of Practice — Australian Banking Association
Information current as at 2 September 2026.
General advice warning: This article contains general information only. It does not take into account your objectives, financial situation or needs, and it is not personal credit or financial advice. Consider whether it is appropriate for you and seek advice from a licensed credit representative before acting.
Any interest rate shown is an example only and is not an offer of credit. Where a rate is quoted, the applicable comparison rate is available from the relevant lender and should be considered alongside it.
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