Are business loan repayments tax deductible in Australia? The answer is both yes and no. The interest and some of the fees attached to your loan are deductible. The amount you borrowed, the principal, is not. Getting this split wrong is one of the more common mistakes business owners make at tax time, and it can be an expensive one if the ATO reviews your claim. Before you lodge a deduction for loan repayments, it is worth reading through exactly what qualifies and what does not.
Key Takeaways
- Only the interest and eligible fees on a business loan are tax deductible - the principal you borrowed is never deductible, no matter how the loan is structured.
- If you're using the loan for both business and personal purposes then you can only claim the interest that's actually tied to the business portion, not the whole amount.
- Interest on a business loan used to pay off a business tax debt is still generally deductible under ATO Taxation Ruling IT 2582, even though that's not always the first thing people assume.
- From 1 July 2025 the interest the ATO itself charges on unpaid tax (GIC and SIC) is no longer deductible, which is one reason refinancing a tax debt into a business loan can end up being the more tax-effective option by comparison.
- Interest charged on business loans isn't subject to GST either, so there's no GST credit to claim on the interest you pay.
- Different loan products - equipment finance, lines of credit, invoice finance - all get treated a little differently under ATO rules, so it pays to check which category yours falls into.
- Keep detailed loan records, because poor documentation is one of the most common reasons the ATO disallows a claim that would otherwise have been perfectly legitimate.
What Are Tax Deductions?
Tax deductions are expenses you can subtract from your taxable income, reducing the amount of tax you owe. They exist to account for costs incurred while earning income, helping businesses manage their tax position more effectively. Common deductions include operational costs, depreciation, and interest on business loans. Understanding what qualifies helps you identify eligible expenses and avoid overstating or understating your claim.
Are Business Loan Repayments Tax Deductible?
The Australian Taxation Office allows certain expenses to be claimed as tax deductions when they are directly related to generating assessable income for your business. A business loan repayment is not one single expense for tax purposes. It needs to be broken down into its parts to work out what is deductible.
Interest Payments
The interest component of your business loan repayment is tax deductible. Interest paid on a loan used for income-producing purposes qualifies as a business cost. Whether you borrowed to purchase equipment, invest in property, or fund operational costs, the interest on that borrowing can typically be deducted from your taxable income.
Principal Payments
The principal component of your repayment is not tax deductible. Repaying the principal is a capital transaction. It represents the return of money you borrowed rather than a cost of running your business.
Fees and Charges
Certain loan-related fees, such as establishment fees, application fees, ongoing administrative charges, and early repayment fees, may also be tax deductible if the loan is used for business purposes. Check with your accountant to confirm these fees qualify under current ATO guidelines.
What You Can and Can't Claim on a Business Loan
Not every part of a business loan repayment is tax deductible. In most cases, interest charged on a loan used for business purposes can be claimed as a business expense, but the principal repayment cannot.
The ATO looks at how the borrowed funds were used. If the loan was used entirely for business purposes, the interest is generally deductible in full. If part of the loan was used for personal expenses, only the business portion of the interest may be claimable.
| Loan Cost of Expense | Tax Deductible? | Notes |
|---|---|---|
| Interest charged on a business loan | Yes | Generally deductible when the funds are used for business purposes. |
| Interest on a mixed-purpose loan | Partially | Only the business-related portion of the interest may be claimed. |
| Principal repayments | No | Repaying the original amount borrowed is not a business expense. |
| Loan establishment fees | Usually yes | Often deductible over the life of the loan or over five years, depending on the amount and term. |
| Monthly account-keeping fees | Usually yes | Ongoing loan management fees are generally claimable. |
| Early repayment fees | Usually yes | Often deductible if the loan was used for business purposes. |
| Penalty interest charged by a lender | Usually yes | May be deductible if connected to a business loan. |
| Personal expenses paid with business loan funds | No | Interest relating to personal use is generally not deductible. |
Common Business Loans and Their Tax Treatment
Tax treatment can shift slightly depending on the type of finance you use. The rule that only interest and eligible fees are deductible still applies across the board, but how that plays out differs by product.
Equipment Finance
A civil construction company takes out a $450,000 equipment finance facility to purchase excavators and earthmoving machinery, using the equipment exclusively for income-producing work across several projects. Interest on the equipment finance is deductible because the asset is used to generate assessable income. Depreciation on the equipment is claimed separately under the relevant depreciation schedule, not as part of the loan repayment itself.
Business Line of Credit
Interest on a business line of credit is only charged on the amount you have drawn down, not the full approved limit, and that interest is deductible provided the drawn funds are used for business purposes (see ATO.gov.au guidance on deductible business expenses). Where a business owner draws $150,000 from a line of credit and uses $100,000 for expansion and $50,000 for personal expenses, only the interest relating to the business portion is deductible. This distinction between drawn and undrawn balances is worth understanding before you rely on a line of credit for mixed spending, and the ATO applies the same apportionment approach it uses for any other mixed-purpose loan.
Working Capital Loan
A manufacturing business secures a $300,000 unsecured working capital loan to cover wages, raw materials, and supplier payments during a busy production period. Because the funds are used for day-to-day operating expenses, the interest is generally deductible, along with associated establishment and maintenance fees. The principal drawn down remains non-deductible.
Merchant Cash Advance
A merchant cash advance is structured as a purchase of future receivables rather than a traditional loan. The cost of the advance, often called the factor rate or discount, is not characterised as interest for tax purposes. Instead, it is treated as a business expense. Whether that expense is deductible comes down to whether the advance was used to generate assessable income. Because the structure differs from a standard loan, it is worth getting advice from a registered tax agent on the precise treatment for your business.
Invoice Finance
Facility fees and interest charged on invoice financing are generally deductible as business expenses where the facility is used to fund business operations, following the same principles that apply to other forms of business borrowing. Because invoice finance is secured against your outstanding invoices rather than physical assets, the tax treatment of the interest itself does not change as a result.
Does GST Apply to Business Loan Interest or Fees?
Interest charges on business loans are treated as input-taxed financial supplies under GST law, which means they are not subject to GST. This also means you cannot claim a GST credit on the interest you pay. Loan establishment fees are generally treated the same way and are input-taxed. Some advisory or brokerage fees charged alongside a loan can be a different story, as certain services connected to arranging finance may be taxable supplies. If your loan involved broker or advisory fees, check with your accountant on how GST applies to that specific charge.
Can I Claim Deductions if I Used a Business Loan to Pay Off Tax Debt?
You can generally claim deductions on interest for borrowing used to generate income for your business, and this extends to a less obvious scenario: using finance to settle a tax debt. ATO Taxation Ruling IT 2582 states that where a business borrows to pay a tax liability connected to that business, the interest incurred on the borrowing is “a normal incident of conducting that business” and is potentially deductible. In practice, this means that if you take out a tax debt loan to settle an ATO liability relating to your business, the interest on that loan can generally still be claimed, provided the debt itself relates to your business rather than a personal tax liability.
This distinction matters more since 1 July 2025, when a law change removed the deduction for the General Interest Charge (GIC) and Shortfall Interest Charge (SIC) that the ATO itself applies to late or underpaid tax, regardless of which income year the debt relates to. That change does not touch interest on an external business loan used to pay the debt down, which is one reason refinancing an ATO liability into a structured tax debt loan can still be a tax-effective way to manage the cost of settling it.
Does Your Business Structure Affect Tax Deductions?
Your business structure can change how a loan-related deduction is reported, but it does not usually change whether a legitimate business interest expense is deductible in the first place.
Sole traders generally claim business loan interest through their individual tax return. Companies claim it through the company tax return, while trusts and partnerships distribute income and deductions according to their structure and any relevant agreements.
The deciding factor is still the purpose of the loan. If borrowed funds are used to generate assessable business income, the interest may generally be deductible whether you operate as a sole trader, a company, a partnership, or a trust.
Is Refinancing a Business Loan Tax Deductible?
What Refinancing Costs May Be Deductible?
| Refinancing Cost | Usually Deductible? | Notes |
|---|---|---|
| Interest on the refinanced loan | Yes | Deductible if the loan continues to be used for business purposes. |
| Exit fees on the old loan | Usually yes | Can generally be claimed if tied to a business facility. |
| Loan establishment fees | Usually yes | Often claimed over several years rather than upfront. |
| Valuation fees | Usually yes | Depends on the purpose of the refinance. |
| Principal repayments | No | Repayment of the borrowed amount itself is not deductible. |
When Refinancing May Affect Deductibility
Problems can arise when refinanced funds are partly used for personal expenses. For example, if you refinance a $400,000 business loan and increase it to $550,000, then use the extra $150,000 for personal purposes, only the interest relating to the original business portion and any business use of the additional funds may be deductible. The personal share is excluded.ATO Red Flags When Claiming Business Loan Deductions
The ATO pays close attention to business loan deductions where business and personal finances overlap. A few patterns tend to draw scrutiny.
Claiming the Full Loan Repayment
Many business owners mistakenly claim the entire loan repayment instead of only the interest portion. Principal repayments are not deductible because they relate to repaying the original borrowed amount, not to earning income.
Mixing Business and Personal Expenses
Using the same loan for business and personal spending creates a tax complication. If part of the loan was used privately, only the business-related interest portion may generally be deductible, and the ATO expects you to be able to show the split.
Poor Record Keeping
The ATO expects businesses to retain loan agreements, bank statements, and repayment records. Without proper documentation, an otherwise legitimate deduction can still be denied.
Small Business Income Tax Offset
As a small business owner, there are other ways to reduce your tax liability beyond loan-related deductions. The Small Business Income Tax Offset is one of them. While it does not directly relate to business loan repayments, it can help reduce your overall tax obligations.
To qualify, for the 2025 to 2026 income year:
- You must be carrying on a small business as a sole trader, or have a share of net small business income from a partnership or trust.
- Your business must have an aggregated turnover of less than $5 million.
- Eligible businesses can claim up to a 16% tax offset on the income tax payable on their business income, capped at $1,000 per year.
Combining this offset with legitimate deductions, such as interest on a business loan, can meaningfully reduce what you owe. Speak to your accountant about how the two interact in your specific return.
In Summary
Business loan repayments are only partly tax deductible. The interest and most associated fees can be claimed, while the principal cannot, regardless of the type of finance you use or how the funds are split between business and personal purposes. The rules stay consistent across equipment finance, lines of credit, working capital loans, merchant cash advances, and invoice finance, though the detail of what counts as interest versus a business expense varies by product. Since 1 July 2025, that consistency matters even more for tax debt specifically, now that the ATO’s own interest charges are no longer deductible. Keeping clean records and understanding how your loan was used will put you in a stronger position at tax time. If you are weighing up a new facility or considering refinancing an existing one, it is worth talking it through with a specialist – get in touch with Dark Horse Financial and one of our brokers can walk you through how the structure affects your position.
Frequently Asked Questions
Only partly. The interest component of a business loan repayment is generally tax deductible when the loan is used for business purposes, but the principal you borrowed is not deductible under any circumstances.
No. You can only claim the interest and any eligible fees connected to the loan. Claiming the full repayment, including the principal, is one of the more common mistakes the ATO looks for during a review.
Only the interest relating to the business portion of the loan is deductible. You will need to apportion the interest based on how the funds were actually used and keep records to support that split.
No. Interest on business loans is treated as an input-taxed financial supply, so it is not subject to GST and no GST credit can be claimed on it. Some advisory or brokerage fees connected to a loan may be treated differently, so check with your accountant.
Generally, yes, if the debt relates to your business. ATO Taxation Ruling IT 2582 treats interest on a loan used to settle a business tax debt as potentially deductible. This is separate from the ATO’s own GIC and SIC charges, which are no longer deductible from 1 July 2025.
No. From 1 July 2025, the General Interest Charge and Shortfall Interest Charge the ATO applies to late or underpaid tax are no longer deductible, regardless of the income year the debt relates to. Interest on an external business loan used to pay off that debt is a separate matter and can still be deductible under ATO Taxation Ruling IT 2582.
Disclaimer: While care has been taken in the creation of this article you should not rely on the information in this article for any reason. The information in this article is subject to change and does not take into account your personal circumstances and it is not a recommendation or advice of any kind. You should always consult a professional for tax, financial planning and superannuation before making any decisions.
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