Are Business Loan Repayments Tax Deductible in Australia? (2026 Guide)

Cropped photo of a woman using a calculator and going over documents, calculating interest on a business loan to claim tax deductions

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Key Takeaways

When managing your business finances, it’s important to understand the tax implications of every dollar spent. One question often asked by business owners is: are business loan repayments tax deductible? Yes, and no. You can claim deductions on repayments, but only the interest and some fees are tax deductible, while the principal is not. Read on to get a more in-depth look at the answer and why tax deductions on business loan repayments work this way.

What Are Tax Deductions?

Tax deductions are costs that you can claim that lower your taxable income. By lowering the income the tax office calculates your bill on, deductions can cut down the amount of tax you need to pay. They’re meant to recognise the costs that come with earning an income, whether you’re running a business or working as an individual. Some typical examples include day-to-day operating expenses, depreciation of assets, and interest paid on business loans. Knowing what qualifies as a deduction can make a big difference to how much tax you save.

Are Business Loan Repayments Tax Deductible?

The Australian Taxation Office (ATO) allows certain expenses to be claimed as tax deductions if they are directly related to generating assessable income for your business. However, business loan repayments need to be broken down into their respective components to determine deductibility:

1. Interest Payments

The interest portion of your business loan repayments is generally deductible. The ATO sees interest on business loans (which are used to generate income) as a legitimate business expense. So, no matter why you borrowed money ( buy equipment, invest in real estate, or pay for everyday business costs, etc.) you can usually deduct the interest you pay.

2. Principal Payments

But the principal is different. Paying back the original amount you borrowed is not seen as an expense. It’s seen as paying back capital. Because of this, the main part of your payment isn’t tax-deductible.

3. Fees and Charges

You may also be able to deduct some fees related to loans. This could mean fees for applying, setting up an account, keeping it up to date, or even penalties for paying it off early. It’s best to check with your accountant before claiming them to make sure they follow ATO rules.

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, the interest charged on a loan used for business purposes can be claimed as a business expense, but the principal repayment cannot.

The Australian Taxation Office looks at how the borrowed funds were used. If the loan was used entirely for business purposes, the interest is generally deductible. If part of the loan was used for personal expenses, only the business portion of the interest may be claimable.

Loan Cost or ExpenseTax Deductible?Notes
Interest charged on a business loanYesInterest is generally deductible when the funds are used for business purposes.
Interest on a mixed purpose loanPartiallyOnly the business related portion of the interest may be claimed.
Principal repaymentsNoRepaying the original amount borrowed is not considered a business expense.
Loan establishment feesUsually yesThese are often deductible over the life of the loan or over five years, depending on the amount and loan term.
Monthly account keeping feesUsually yesOngoing loan management fees are generally claimable.
Early repayment feesUsually yesOften deductible if the loan was used for business purposes.
Penalty interest charged by a lenderUsually yesMay be deductible if connected to a business loan.
Personal expenses paid with business loan fundsNoInterest relating to personal use is generally not deductible.
Cropped photo of a person in a suit using a calculator, calculating interest on a business loan for tax deduction purposes

Real Examples of Business Loan Tax Deductions

The tax treatment of a business loan depends on how the funds are used. Below are common examples of how Australian businesses may claim deductions on business lending costs.

Civil Construction Company Financing Equipment

A civil construction company takes out a $450,000 equipment finance facility to purchase excavators and earthmoving machinery.

The business uses the equipment exclusively for income producing work across multiple construction projects.

In this scenario, the business may generally claim:

  • The interest charged on the equipment finance
  • Depreciation on the machinery
  • Some loan establishment fees
  • Ongoing account fees connected to the facility

The principal repayments on the loan are not tax deductible.

For many construction businesses, equipment finance can provide both operational benefits and legitimate tax deductions tied directly to business use.

Manufacturing Business Using a Working Capital Loan

A manufacturing business secures a $300,000 unsecured business loan to purchase raw materials, cover wages, and manage supplier payments during a busy production period.

Because the loan is being used for day to day business operations, the interest charged on the loan may generally be deductible.

Potential claimable costs can include:

  • Interest repayments
  • Loan maintenance fees
  • Loan establishment costs

The original loan amount being repaid is not deductible.

Working capital loans are commonly used to smooth cash flow during seasonal demand spikes or periods of business growth.

Transport Company Financing Trucks

A transport operator purchases several prime movers through a chattel mortgage facility.

Because the trucks are used entirely for business operations, the company may generally claim:

  • Interest on the finance agreement
  • Depreciation on the vehicles

If one of the vehicles is partly used for personal purposes, only the business use portion of the interest and vehicle expenses may be claimable.

Business Owner Using a Mixed Purpose Loan

A business owner draws $150,000 from a line of credit.

  • $100,000 is used for business expansion
  • $50,000 is used for personal expenses

In this case, only the interest relating to the business use portion of the facility may generally be deductible.

This is one reason many accountants recommend keeping business and personal lending separate. Mixed purpose borrowing can create accounting complications and increase scrutiny during an ATO review.

Using a Business Loan Calculator

A business loan calculator can help you estimate your repayments, including the breakdown of principal and interest. Knowing this breakdown is essential for accurate tax reporting. By using a calculator, you can:

  • Plan your cash flow effectively.
  • Determine the proportion of repayments eligible for tax deductions.
  • Assess the financial impact of borrowing on your business.

For example, if you borrow $100,000 at an interest rate of 5% for five years, a loan calculator can help you estimate the total interest paid annually, which can then be claimed as a deduction.

Can I Claim Deductions if I Used a Business Loan to Pay off Tax Debt?

You can claim deductions on interest for anything related to generating income for your business. But what if a business loan is used to pay tax obligations? According to the ATO, paying tax debt with a business loan is considered “a normal incident of conducting business.” So yes, at the time of writing, the ATO advice is you can claim deductions on the interest of a business tax debt loan

Does Your Business Structure Affect Tax Deductions?

Your business structure can affect how loan related tax deductions are reported, but it does not usually change whether legitimate business interest expenses are deductible.

Sole traders generally claim business loan interest in their individual tax return. Companies claim deductions through the company tax return, while trusts and partnerships distribute income and deductions according to their structure and agreements.

The key issue is still the purpose of the loan. If the borrowed funds are used to generate assessable business income, the interest may generally be deductible regardless of whether you operate as a sole trader, a company, a partnership, or a trust.

Is Refinancing a Business Loan Tax Deductible?

Refinancing a business loan does not automatically create a tax deduction, but some of the costs associated with the refinance may be deductible.

The tax treatment usually depends on how the new funds are used.

If you refinance an existing business loan that was originally used for business purposes, the interest on the new loan may generally remain deductible. 

What Refinancing Costs May Be Deductible?

Depending on the loan and business use, you may be able to claim deductions for:

Refinancing CostUsually Deductible?Notes
Interest on the refinance loanYesUsually deductible if the loan continues to be used for business purposes.
Exit fees on the old loanUsually yesCan generally be claimed if tied to a business facility.
Loan establishment feesUsually yesOften claimed over several years rather than upfront.
Valuation feesUsually yesDepends on the purpose of the refinance
Principal repaymentsNoThe repayment of the borrowed amount itself is generally not deductible.

When Refinancing May Affect Deductibility

Problems can arise if 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 business portion may generally be deductible.

Tips for Claiming Deductions on Business Loan Repayment Interest

To maximise your deductions on the interest part of your business loan repayments, follow these tips:

  • Maintain clear and complete records of your loan agreement, repayment schedule, and bank statements to back up your claims.
  • Make sure that your business loan is used only for income producing purposes. You can only deduct the part of the interest that is related to the business if the loan is partly for personal use.
  • Some loan related fees, like establishment fees or administrative charges, may also be deductible. Categorise these expenses separately in your records.
  • Get some accounting software to help you keep track of your spending, figure out how much interest you can deduct, and make sure your tax returns are correct.
  • Check your loans and related costs on a regular basis to find any mistakes or missed deductions. Regular reviews help you keep track of what you need to do to stay in compliance.
  • Hire a tax advisor or accountant to make sure your deductions are in line with the most recent ATO rules. They can also find other ways to save money.
A man wearing glasses concentrates as he reads the screen of his laptop, tracking his business expenses to claim deductions on his business loan interest

Common ATO Red Flags When Claiming Business Loan Deductions

The ATO pays close attention to business loan deductions where business and personal finances overlap. Poor records, mixed purpose borrowing, and incorrect claims can increase the risk of review or audit.

Claiming the Full Loan Repayment

Many business owners mistakenly claim the entire loan repayment instead of only the interest portion. Principal repayments are generally not tax deductible because they relate to repaying the original borrowed amount.

Mixing Business and Personal Expenses

Using the same loan for business and personal spending creates tax complications. If part of the loan is used privately, only the business related interest portion may generally be deductible.

Poor Record Keeping

The ATO expects businesses to keep loan agreements, bank statements, and repayment records. Without proper documentation, otherwise legitimate deductions can be denied.

Small Business Income Tax Offset

As a small business owner, you can reduce your business tax in more ways than one. For instance, the Small Business Income Tax Offset is a benefit provided by the ATO to reduce the tax liability of small businesses. While this offset does not directly relate to business loan repayments, it can indirectly assist small businesses in managing their tax obligations. 

Here’s what you need to know to qualify:

  • You must be running a small business as a sole trader or getting a share of the nett small business income from a partnership or trust.
  • Your business’s total turnover must be less than $5 million.
  • Businesses that qualify can get a tax break of up to 16% on the income tax they owe on their business income, up to $1,000 per year.

Talk to the ATO or your tax advisor for more information on how to apply for the Small Business Income Tax Offset. If you combine this offset with other deductions, like interest on business loans, you can make your tax strategy a lot better.

In Summary

Are business loan payments tax-deductible in Australia? The answer is in how your payments are broken down. You can’t deduct the principal, but you can usually deduct the interest and some of the fees that come with the loan. You can lower your tax and better manage your business finances by knowing the rules and keeping accurate records.

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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