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Buying Property · Koste Knowledge Base

Can You Claim Borrowing Costs as a Tax Deduction?

Published 26 June 2026 · Last updated 26 June 2026

Quick Answer

Yes, you can claim borrowing costs as a tax deduction over the loan term or five years, whichever is shorter, under **Section 25-25 of ITAA 1997**. Borrowing costs include loan establishment fees, title search fees, and mortgage document preparation fees. Consult your accountant to ensure compliance with current rules.

Borrowing costs are an often overlooked but significant expense that investors can claim as a tax deduction. Under Section 25-25 of ITAA 1997, borrowing costs are deductible over the shorter of the loan term or five years. These costs include loan establishment fees, title search fees, and mortgage document preparation fees. However, they do not include the principal borrowed or interest payments.

A common misconception is that these costs can be claimed in full in the year they are incurred. Instead, they must be spread over time, which can influence your cash flow and tax planning strategies.

To see how this plays out, consider a scenario where you purchase a residential investment property in Melbourne for $800,000. You incur borrowing costs totaling $5,000, including a loan establishment fee and legal costs. If your loan term is 20 years, you would claim $1,000 per year over five years, reducing your taxable income. At a 37% marginal tax rate, this results in a tax saving of $370 per year.

In our experience reviewing thousands of properties across Australia, many investors fail to account for all eligible borrowing costs, missing out on potential tax savings. Others mistakenly claim these costs upfront, leading to ATO audits and potential penalties. It's also common to overlook refinancing costs, which can often be claimed as well.

The answer can differ depending on your situation. If your borrowing costs are under $100, you can claim them in the first year. For properties acquired before 1 July 2017, different rules apply if they were second-hand. Also, for properties held in an SMSF or by a company, specific rules and limitations might affect your deductions.

Given these complexities, it's crucial to consult a Chartered Quantity Surveyor and your accountant. They can ensure you capture all eligible deductions while complying with the latest tax laws.

  • Gather all records of borrowing costs incurred.
  • Consult with a Chartered Quantity Surveyor to identify deductible amounts.
  • Work with your accountant to structure these deductions in your tax return.
  • Review your loan documents for any overlooked costs.
  • Plan for future deductions if refinancing or altering your loan structure.
  • Keep abreast of any changes in tax legislation that might impact your claims.
  • Frequently Asked Questions

    What are considered borrowing costs?

    Borrowing costs include fees related to loan establishment, title searches, and mortgage document preparation. They do not include the borrowed principal or interest payments.

    How do I claim borrowing costs on my tax return?

    Report borrowing costs on your tax return over the shorter of the loan term or five years. Consult your accountant for accurate reporting.

    Can I claim borrowing costs for a property in Queensland?

    Yes, borrowing costs can be claimed for properties in Queensland, following the same rules as other Australian states.

    Are borrowing costs deductible for a business loan?

    Yes, borrowing costs for business loans are deductible, subject to the same rules of apportionment over time.

    How do borrowing costs affect my tax refund?

    Claiming borrowing costs reduces your taxable income, potentially increasing your tax refund. The exact impact depends on your tax rate and other deductions.

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