Refinancing an investment property is both similar to and importantly different from refinancing an owner-occupied home. The rate dynamics are the same — find a better deal, save money. But the tax implications, loan structure considerations, and strategy for using released equity are more complex.
This guide covers the full picture for Australian property investors refinancing in 2026.
Why Investment Property Refinancing Matters More
On a large investment loan, even a modest rate reduction is significant. More importantly, investment property refinancing is often part of a broader portfolio strategy — releasing equity from an appreciated property to fund additional purchases.
Example: An investor who bought in Brisbane in 2021 for $600,000 with an $480,000 loan (80% LVR). By mid-2026, the property is worth $850,000. The loan has reduced to $440,000 via repayments.
- Current LVR: $440,000 / $850,000 = 51.8%
- Useable equity (at 80%): ($850,000 × 80%) – $440,000 = $240,000
This investor has $240,000 of equity they could release to fund another investment purchase — building the portfolio from one property to two without any additional cash savings.
Investment Property Refinance Rates in 2026
Investment loans carry a rate premium over owner-occupier loans:
| Loan Type | Competitive Rate | Major Bank Rate | |-----------|-----------------|-----------------| | Owner-occupier variable (P&I) | 5.49%–5.99% | 6.20%–6.70% | | Investment variable (P&I) | 5.79%–6.39% | 6.50%–7.10% | | Investment variable (IO) | 6.09%–6.79% | 6.80%–7.50% |
A property investor on a major bank's investment variable rate who refinances to a competitive non-bank lender can save 0.60%–1.00% p.a. On a $650,000 investment loan, that's $3,900–$6,500 per year.
Tax Implications of Investment Property Refinancing
Refinancing an investment property has tax implications that owner-occupier refinancing doesn't. Specifically:
Interest deductibility: The interest on your investment loan is deductible in proportion to the property's business use (rental). This doesn't change when you refinance — you're simply continuing to pay deductible interest at a (hopefully lower) rate.
Loan purpose contamination: When you release equity from an investment property, the purpose of the new loan determines its tax treatment. If you use released equity to buy another investment property, that interest is deductible. If you use it to fund personal expenses (holiday, car), that interest is NOT deductible.
Keeping purposes separate — and documenting the intent — is essential. NIK Finance structures investment property refinances to maintain this separation.
Refinancing costs: Discharge fees, application fees, and valuation costs incurred when refinancing an investment property are generally deductible (over 5 years as borrowing costs). Keep your receipts.
Interest-Only vs Principal and Interest for Investment Loans
Many investors choose interest-only (IO) loans to maximise cash flow and deductible interest. When refinancing an investment loan, the IO/P&I decision deserves fresh consideration.
Interest-only:
- Lower monthly repayment → better cash flow
- Full interest payment is deductible
- Loan balance doesn't reduce (relies on capital growth for equity building)
- IO terms usually 5 years, then reverts to P&I (repayments increase)
Principal and interest:
- Higher monthly repayment
- Faster equity build-up
- Lower total interest paid over loan life
- Lower rate than IO (typically 0.30%–0.50% lower)
The right choice depends on your tax position, cash flow needs, and investment timeline. A broker can model both scenarios for your specific numbers.
Equity Calculation: How Much Can You Release?
For most investment property refinances, the maximum equity release is to 80% LVR (some lenders go to 90% with LMI).
Formula: (Property Value × 80%) – Outstanding Loan Balance = Maximum Equity Release
Important note for investors: The 80% threshold is assessed across all loans secured against the property. If you have a split structure (home loan and investment equity loan secured on the same property), the lender assesses the combined debt.
Cross-Collateralisation: Avoid It
One of the most common structural mistakes property investors make is allowing their lender to cross-collateralise — using one property as security for a loan against another.
While banks encourage cross-collateralisation (it makes switching lenders harder for you), it creates:
- Complexity in releasing equity from individual properties
- Risk of the bank controlling your whole portfolio if one loan has issues
- Difficulty in selling one property without the bank's consent to restructure the entire security package
At NIK Finance, we always recommend standalone security for each property — each loan secured by one property, not by a portfolio. When refinancing, we structure equity releases as separate loan facilities with clear purposes.
Refinancing to Build Your Portfolio
The most powerful use of investment property refinancing is using equity from appreciated properties as deposits for new purchases. The process:
- Property A (purchased 2019): Worth $900,000, loan $400,000, useable equity = $320,000
- Refinance Property A, establishing a separate equity loan for $300,000 (65% LVR new total)
- Use $300,000 as 20% deposit on Property B (purchase price $1,200,000, new loan $900,000)
- Property B purchased: no cash required from borrower
This strategy allows portfolio growth without additional cash savings — funded entirely by the growth in your existing properties. The critical constraint is serviceability: can your income support the repayments on both properties?
Frequently Asked Questions
Can I refinance my investment property to pay off my home loan? Technically yes, but this would typically mean redirecting investment loan funds to a private (non-deductible) purpose — creating tax complexity. Speak to your accountant before doing this.
Does refinancing reset my depreciation schedule? No. Depreciation is claimed on the asset (the building and its fixtures), not the loan. Refinancing doesn't affect your depreciation entitlements.
Can I refinance multiple investment properties at once? Yes. If you're restructuring a portfolio, NIK Finance can manage multiple simultaneous refinances, ensuring each loan is correctly structured and settled in the right sequence.
How do I know if the investment refinance is worth the break cost? We run the calculation for you. Break cost + new loan net savings analysis tells you the payback period and total net saving over 3–5 years.
Is my accountant or financial advisor involved in the refinance? We recommend keeping your accountant informed of any significant loan restructure, as it has tax implications. We don't provide tax advice but work collaboratively with your existing advisors.
Refinance Your Investment Property With NIK Finance
Lower rates, equity release, and portfolio growth — we help Australian investors achieve all three. Fill out our 2-minute form at nik.finance to get started.
NIK Finance holds an Australian Credit Licence. Tax information is general in nature. Always consult your accountant for advice specific to your situation.