Will refinancing restart or affect interest deductibility on my investment loan?
Refinancing an investment loan for the same balance and purpose generally does not affect your interest deductibility — the deduction follows the purpose the money was borrowed for, not the lender it sits with. The risk appears when you increase the loan or release equity: interest on the extra funds is only deductible if those funds are used for an income-producing purpose. Mixing deductible and non-deductible borrowing in one loan is where deductions get contaminated.
The trap most brokers miss
The trap is releasing equity into the same loan split for a private purpose — a holiday, a car, a renovation on your own home — and unknowingly contaminating the whole loan’s deductibility. Untangling a mixed-purpose loan afterwards is difficult and can cost you deductions for years.
What you actually need
- Clarity on the purpose of every dollar being borrowed
- A separate loan split for any new borrowing with a different purpose
- Documentation of what borrowed funds are used for
- Coordination between your lending and your accountant
Illustrative scenarios
Teaching examples built from typical situations to show how we approach the problem. Numbers only, never names.
Refinance and interest deductibility
An investor wanted to refinance an investment loan and release $100,000 of equity, unsure whether it would affect the interest deductions on the existing loan.
Deductibility follows the PURPOSE the borrowed money is used for, not the property it is secured against — mixing the equity release with the investment loan risked contaminating the deduction.
We structured the equity release as a separate split and documented its purpose, so the deductible and non-deductible portions stayed cleanly divided.
The refinance proceeded with the deduction trail kept clean — an illustrative example of structure protecting a tax position, discussed with your accountant.
Illustrative example only. This is a teaching scenario built from typical borrower situations to show how we approach the problem — not a record of a specific client, and not a prediction of your result. Your outcome depends on your lender, your financials and current lending policy.
Equity release for renovations
An owner wanted to redraw $80,000 from their home loan to renovate, and asked whether the interest would be deductible.
Interest on money redrawn for a private renovation on an owner-occupied home is generally not deductible — a common and costly misunderstanding.
We explained that deductibility follows use, set expectations honestly, and where an investment purpose was involved structured a separate split to keep any deductible portion clean.
The owner proceeded with a clear, honest understanding of what was and was not deductible — an illustration of avoiding a costly assumption before it happened.
Illustrative example only. This is a teaching scenario built from typical borrower situations to show how we approach the problem — not a record of a specific client, and not a prediction of your result. Your outcome depends on your lender, your financials and current lending policy.
Why this answer is worth trusting
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