Refinancing An Investment Property in Perth, WA, Your Practical Guide
Your investment property has built equity, your fixed rate is rolling off, or you've simply had the same lender for three years without a conversation. Any of those is a reason to look at refinancing, and for investors in Perth, WA the decision involves a few more moving parts than it does for an owner-occupier.
The serviceability test is run on the whole portfolio, not just the property being refinanced. The way rental income is counted, how existing debt sits against your equity, and whether the loan stays interest-only or reverts to principal and interest all change the outcome in ways that differ significantly between lenders.
Our team helps investors across Perth, WA work through those decisions and compares options across 60+ lenders. The investment loan structure you already have matters as much as the rate you're moving to.
Key takeaways
- Lenders assess the whole portfolio at refinance, not just one property.
- Rental income is typically shaded to 80% of gross when calculating serviceability.
- Negative gearing on established property purchased after Budget night is restricted from 1 July 2027.
Can Perth investors refinance an investment property while keeping their current structure?
Yes, and most do, though the lender you move to may assess the position differently to the one you're leaving. Refinancing an investment loan is straightforward where the equity is solid and the rental income is documented, but a lender switch triggers a full serviceability assessment at the new lender's rates and policies, so what passed three years ago doesn't automatically pass today, particularly with the APRA cash rate at 4.35% and the 3.0% serviceability buffer on top.
How does refinancing an investment property actually work in Perth, WA?
The mechanics are the same as refinancing an owner-occupier loan: you apply to a new lender, they value the property, run serviceability and, if approved, discharge the old lender and register the new mortgage. What differs is the assessment lens. REIWA data shows Perth investment suburbs carrying a wide range of house medians, from $700,000 in Armadale through to over $2.4 million in South Perth, so the equity position and the LVR on refinance vary substantially depending on where the property sits.
The new lender counts your rental income at typically 80% of gross, adds the holding costs, and assesses the resulting net figure against the full portfolio debt. If you hold two or more investment properties, all of them go into the calculation. The property you're refinancing doesn't sit in isolation.
We regularly see investors who passed serviceability easily at application three years ago find it tighter now, not because their income dropped, but because the assessment rate moved up and the new lender's rental shading is more conservative. The portfolio hasn't changed, but the arithmetic has.
Joe Del Borrello · Director, Launch Finance · Chat to the Launch team →
What do you need to qualify to refinance an investment property?
The lender's checklist is broadly what you'd expect, with a few investment-specific additions.
What lenders verify at refinance:
- › Equity position: most lenders want the property at 80% LVR or below to avoid LMI on the refinanced loan. Where LVR sits above 80%, LMI is usually charged unless you hold a professional waiver.
- › Rental income evidence: a current lease agreement and typically two years of rental statements. Some lenders accept a property manager's letter for a recently tenanted property.
- › Portfolio serviceability: your total debt across all properties, credit cards and HECS is assessed against gross income, with rental income added at the shaded rate.
- › Credit file: enquiries from the original loan application, plus any since, remain visible for five years from the date lodged.
- › APRA DTI cap: lenders are restricted on how much high debt-to-income lending they can write. Investor lending sits at higher DTI ratios on average, so this bites the investor pool first when a lender approaches its quarterly limit.
Source: APRA (residential mortgage lending and DTI limits).
What does it cost to refinance an investment property in Perth?
The costs of refinancing sit in a few predictable places. Discharge fees from your existing lender, government registration and title fees in WA, and any break cost if you're leaving a fixed rate before its term ends. The break cost is the one investors misjudge most: it's calculated on the difference between your contracted rate and the lender's current wholesale rate, and it can swing from a few hundred dollars to several thousand depending on when rates moved and how far into your fixed term you are.
Cash-out and equity release on refinance
If you're refinancing to access equity, the lender will value the property at the current market and lend against the new figure, typically to 80% LVR. On a property REIWA data shows at a $967,000 median in Morley, for example, 80% LVR implies roughly $773,600 in total lending against that security. The equity above any existing loan balance is what's available to draw.
Interest-only terms at refinance
Most lenders cap interest-only periods at five years for investment loans. If your existing IO term is expiring and you refinance at the same time, you can typically negotiate a fresh IO period at the new lender, subject to serviceability. Repayments step up sharply when an IO period ends and the loan reverts to principal and interest over the remaining term, so timing a refinance around that rollover is worth the conversation.
The options worth weighing:
- › Refinance to a lower rate, same structure: IO period continues · rental deductibility unchanged · lower holding cost · serviceability still re-tested in full
- › Refinance and cash out equity: higher loan balance · higher deductible interest · equity released for the next purchase · LVR must stay within the lender's investment cap
- › Refinance and switch to principal and interest: lower rate at most lenders · builds equity faster · reduces the deductible interest component over time · higher monthly repayment
| Get in touch Need help with refinancing an investment property? We're a local team who understand how lenders actually assess your situation, not just your rate. We'll compare your options across 60+ lenders to find the right fit.
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How long does it take to refinance an investment property?
A straightforward investment refinance typically takes three to five weeks from application to settlement. The valuation is usually the first variable: some lenders use automated models for standard residential investment properties, which can come back in a day or two, while others send a valuer to the property. A low valuation at this stage is the most common cause of a delayed or restructured refinance, so knowing what the property is likely to be worth before you apply matters.
Where you're refinancing across multiple securities, or the loan structure is more complex, allow six to eight weeks. Mortgage discharge by the outgoing lender adds a step that's largely outside your control, and settlement agents in WA manage this through the PEXA electronic settlement platform.
When does refinancing an investment property not make sense?
Refinancing costs money upfront and time to recover. Where the rate saving is small and the break cost is large, you may be three or four years into the new loan before you're ahead. A rough measure: if the annual interest saving doesn't cover the refinance costs within two years, it's worth being cautious unless there's another reason to move, such as consolidating securities or releasing equity for a next purchase.
It also doesn't suit every portfolio structure. If your investment properties are cross-collateralised, the lender holds all the securities together, and refinancing one means the new lender re-values and reassesses the whole position. Untangling cross-collateralised securities at refinance takes more time, more documentation, and often requires enough equity in each property to stand independently. For investors on the outer corridors of Perth, where REIWA data shows medians from $840,000 in Butler through to $865,000 in Rockingham and $850,000 in Ellenbrook, the equity headroom may be thinner and that matters when you're asking a new lender to pick up a single security from a cross-collateralised pool.
Where the IO period has just rolled to principal and interest and the repayments have stepped up, refinancing to reset the IO clock is possible but not automatic. A fresh IO period at a new lender requires serviceability to pass at the new lender's rates, with the new IO repayment rather than the P&I one. If serviceability is already tight, the IO reset strategy may not be achievable.
What do investors need to know about the tax changes before refinancing?
Two significant changes came into law in June 2026, and both affect how investors should think about their loan structure before refinancing.
Negative gearing restriction
From 1 July 2027, net rental losses on established residential property purchased after 7:30pm AEST on 12 May 2026 can no longer be offset against salary or other non-property income. Losses are quarantined and carried forward, offsettable only against future property income or capital gains. Property held before Budget night is fully grandfathered and unaffected. New builds remain exempt and keep full negative gearing. This is law, not a proposal. Point the tax question to your accountant, not to us.
CGT discount
From 1 July 2027, the 50% CGT discount for individuals is replaced by cost base indexation plus a 30% minimum tax on the remaining real gain. For investment property refinances that involve cashing out equity for a future sale, the holding period and purchase date now carry more weight in the tax calculation. Again, this is law and commenced 1 July 2027, so the current 50% discount still applies to gains accrued before that date.
Where an investor is refinancing to access equity for the next purchase, we'd usually look at keeping the securities separate from the outset, even if the same lender holds both. Untangling cross-collateralised loans later costs more than structuring them cleanly now.
Joe Del Borrello · Director, Launch Finance · Chat to the Launch team →
How to refinance an investment property in Perth, WA, step by step
The process follows four stages, each with a decision point that can change the outcome.
Step 1: Talk to us
We start by reviewing your current loan structure, the equity position across the portfolio, and what you're trying to achieve, whether that's a lower rate, equity access, an IO reset, or separating securities.
Step 2: Assess the portfolio and model the serviceability
We run your rental income, existing debt and living costs through the assessment models of the lenders most likely to approve the refinance, so you know before applying which lenders are viable and at what LVR.
Step 3: Apply to the right lender and manage the valuation
We submit the application, coordinate the valuation, and respond to any lender queries. If the valuation comes in below expectations, we manage the options at that point rather than at settlement.
Step 4: Discharge, settle and confirm the structure
Settlement is handled through PEXA. Once the new loan is live, we confirm the IO period, offset account setup, and any equity release instructions are in place before we close the file.
What goes wrong when investors refinance?
Where refinances stall or fail:
- › Low valuation: the new lender's valuer comes in below the purchase price or the investor's own estimate, pushing the LVR above 80% and triggering LMI or a reduced loan. Having a realistic current-market view before applying avoids this surprise.
- › Rental income not accepted in full: some lenders only count 70% of gross rent rather than 80%, which moves the serviceability number. Where the portfolio is already tight, lender selection on this one policy point can be the difference between approval and decline.
- › DTI cap timing: a lender can exhaust its investor quota partway through a quarter and decline files it would have approved weeks earlier. Applying to the wrong lender at the wrong time in the quarter is a problem a broker panel across 60+ lenders helps navigate.
- › Cross-collateralisation complexity: investors who cross-secured properties at the original application find refinancing one property requires the whole security pool to be reassessed. If you're in this position, the conversation starts with uncoupling the securities, not with the rate.
If the IO period is expiring and you're refinancing at the same time, apply early enough to avoid a gap where the loan reverts to P&I while the refinance is in progress. Most lenders allow you to hold the existing loan in its current structure until settlement, but it's worth confirming with your current lender before you start.
Frequently Asked Questions
Can I refinance an investment property that's negatively geared?
Yes, negative gearing doesn't affect your ability to refinance. Lenders assess the rental income, the debt and your other income rather than the tax position. From 1 July 2027, losses on established properties bought after Budget night 2026 are quarantined rather than immediately deductible, but that's a tax question for your accountant, not a lending barrier.
Does refinancing reset the interest-only period on my investment loan?
It can, but only if the new lender approves a fresh IO period and you pass serviceability. Most lenders cap IO at five years for investment loans, so switching lenders is one way to extend it if your current lender won't.
Will refinancing affect my investment loan's tax deductibility?
Refinancing to reduce the rate on the same loan purpose doesn't change the deductibility of the interest. If you cash out equity during refinance and use those funds for a private purpose rather than investment, only the portion used for investment remains deductible. Your accountant should confirm the split.
Is it better to fix or stay variable on a refinanced investment loan?
It depends on whether you want rate certainty or flexibility. A fixed rate locks the repayment but limits extra repayments and usually prevents offset. A variable rate keeps offset access and flexibility, which matters more for investment loans where the interest is deductible and you want to maximise it. Most investors with a longer hold period stay variable or use a split.
Can I refinance if my investment property has only just settled?
Most lenders want the property to have been settled for six to twelve months before they'll refinance it. Where there's a compelling reason to move sooner, a smaller number of lenders may consider it, but the valuation and equity position need to support the new LVR.
Should I use a mortgage broker or go direct to a lender for an investment refinance?
A mortgage broker, every time. Investment refinances involve the DTI cap, rental income shading and IO policy that differ between lenders, and the lender that suits your portfolio isn't always the one you already bank with. Comparing across a panel catches those differences before an application goes in.
Your Next Steps
Refinancing an investment property in Perth, WA is worth getting right, because the loan structure you land on shapes the equity access, the tax position and the serviceability headroom for the next purchase. A lower rate matters, but so does the IO term, the rental income policy and whether the lender's DTI appetite suits your portfolio size.
The right lender for this depends on your situation, and that's a conversation worth having. Talk to the Launch Finance team or call 08 9367 4222, and we'll compare your options across 60+ lenders.
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External Resources
Launch Finance · Perth, WA · Launch Finance Pty Ltd (ABN 17 163 528 701), Corporate Credit Representative 454041 of BLSSA Pty Ltd (ABN 69 117 651 760), Australian Credit Licence 391237 · General information only - this article does not constitute financial advice. Please consider your own circumstances and seek professional advice before making any financial decisions.
