Koste Chartered Quantity Surveyors 1300 669 400  |  info@koste.ai

Buying Property · Koste Knowledge Base

How LMI Affects Your Tax Deductions

Published 26 June 2026 · Last updated 26 June 2026

Quick Answer

Lenders Mortgage Insurance (LMI) premiums are deductible over five years for investment properties under Australian tax law. This applies if the LMI is related to income-producing property. Refer to the ATO's position on borrowing expenses.

Lenders Mortgage Insurance (LMI) is often an unavoidable cost for investors with a smaller deposit, but its impact on your tax deductions is a crucial consideration. Under Australian tax law, LMI premiums are considered borrowing expenses and can be claimed over a period of five years, provided the property is used to produce assessable income.

When you pay LMI, it essentially protects the lender, not you, in case you default on your loan. However, because it's a cost associated with obtaining finance for an income-producing asset, you can claim it as a deduction over five years. This is specifically under the borrowing expenses provisions, which include costs incurred to secure a loan for investment purposes.

A common misconception is that LMI can be claimed in full in the year it is paid. However, the ATO requires that borrowing expenses, including LMI, be spread over a five-year period or the term of the loan, whichever is shorter. This means if your loan term is three years, you would claim the LMI over three years instead of five.

To see how this plays out, consider a scenario where you purchase a $700,000 investment property in Melbourne with a 10% deposit. Your LMI premium might be around $15,000. For tax purposes, you can claim $3,000 each year as a deduction over five years. At a 37% marginal tax rate, this results in a tax saving of $1,110 per year.

In our experience reviewing thousands of properties across Australia, many investors overlook LMI as a deductible expense. They often focus on immediate costs like interest and ignore the long-term benefits of spreading borrowing expenses. Additionally, some investors fail to adjust their claims when refinancing or selling the property, potentially missing out on deductions.

The answer can differ depending on your situation. For instance, if your property is not income-producing, LMI is not deductible. Also, if you refinance your loan, the unclaimed portion of LMI related to the original loan generally becomes immediately deductible. Similarly, if you sell the property before the end of the five-year period, you may claim the remaining LMI deduction in that year.

Given that LMI deductions depend on individual circumstances, consulting with a Chartered Quantity Surveyor and an accountant is crucial. They ensure that all borrowing expenses are correctly claimed and aligned with your overall tax strategy.

  • Review your loan documents to confirm the LMI amount.
  • Consult with your accountant to confirm the deductibility of your LMI.
  • Adjust your tax return to include the LMI deduction over the appropriate period.
  • Keep detailed records of all borrowing expenses.
  • Consider the implications of refinancing or selling on your LMI deductions.
  • Schedule a consultation with a Chartered Quantity Surveyor to maximise your deductions.
  • Frequently Asked Questions

    Is LMI deductible for owner-occupied properties?

    No, LMI is only deductible for properties used to produce assessable income. Owner-occupied properties do not qualify for this deduction.

    How do I claim LMI on my tax return?

    LMI is claimed under borrowing expenses on your tax return. Spread the deduction over five years or the loan term, whichever is shorter.

    What happens to my LMI deduction if I refinance?

    If you refinance, the remaining unclaimed LMI from the original loan generally becomes immediately deductible in the year of refinancing.

    Can LMI be claimed in full if the loan is paid off early?

    If you pay off your loan early, you can claim the remaining LMI deduction in the year the loan is paid off.

    Are there state-specific rules for LMI deductions?

    No, LMI deductions follow federal tax laws and are consistent across all Australian states and territories.

    Related Articles

    Read Full Article Free Calculator
    Lenders Mortgage InsuranceTax DeductionsInvestment PropertyBorrowing ExpensesAustralian Tax Law

    Written by Koste Team · Koste Chartered Quantity Surveyors · AIQS Member · RICS Member · TPB Registered · 1300 669 400 · info@koste.ai