Non-Commercial Losses in Australia 2026: Hobby vs Business ATO Rules and How a Tax Agent Can Help

Every year, thousands of Australians run a side business, pursue a passion project, or operate a small enterprise that generates a loss. Whether it is a photography business, a market stall, a consulting practice, or a farming operation, the question of whether that loss can be offset against other income — such as salary or wages — is one of the most important tax questions a small business owner can face. The ATO's non-commercial loss rules are complex, frequently misunderstood, and carry significant compliance risks. Understanding how these rules work, and when a registered tax agent can help you navigate them, is essential for any Australian running a business that is not yet profitable.

Understanding Non-Commercial Losses

A non-commercial loss arises when a business activity conducted by an individual generates a loss that cannot be immediately offset against other income. Under the non-commercial loss (NCL) rules in Division 35 of the Income Tax Assessment Act 1997, the ATO restricts the ability of individuals to use business losses to reduce their taxable income from other sources — unless specific conditions are met.

The rules apply to individuals who carry on a business activity as a sole trader or in partnership. They do not apply to companies or trusts. The fundamental purpose of the NCL rules is to prevent individuals from using hobby activities or speculative ventures — dressed up as businesses — to generate artificial tax losses that reduce their salary or investment income.

If a business loss is classified as non-commercial, it is not disallowed permanently. Instead, it is deferred and carried forward to be offset against future profits from the same or a similar business activity. Understanding the difference between a deferred loss and a disallowed loss is critical to managing your tax position correctly.

The Business vs. Hobby Distinction

Before the NCL rules even apply, the ATO must first determine whether your activity is a legitimate business or merely a hobby. This distinction is fundamental — and it is not always straightforward.

Hobby income is generally not assessable for tax purposes, and hobby-related expenses are not deductible. If the ATO determines that your activity is a hobby, you cannot claim any losses at all — deferred or otherwise.

The ATO considers a range of factors when assessing whether an activity is a business, including:

• Profit intention — Did you commence the activity with a genuine intention to generate a profit?
• Commercial manner — Is the activity conducted in a businesslike way, with proper records, a business plan, and appropriate systems?
• Scale and regularity — Is the activity conducted on a regular and repetitive basis, or is it occasional and sporadic?
• Preparation vs. operation — Have you moved beyond the preparatory phase and commenced actual business operations?
• Similar activities — Are similar activities conducted commercially by other businesses in the same industry?

If the ATO determines your activity is a hobby, no deductions are available. If it is a business, the NCL rules then determine whether any resulting loss can be used immediately or must be deferred.

The Four Tests: When Can You Use a Business Loss Immediately?

If your activity is a legitimate business and you have a total taxable income (including salary, reportable fringe benefits, and reportable employer super contributions) of less than $250,000, you may be able to use a business loss immediately — but only if the business passes at least one of four statutory tests.

The Assessable Income Test

The business activity generates at least $20,000 in assessable income during the financial year. This is the most commonly used test for established businesses with meaningful revenue.

The Profit Test

The business activity has produced a profit in at least three of the past five income years (including the current year). This test rewards businesses that have demonstrated a track record of profitability, even if the current year is a loss year.

The Real Property Test

The business activity uses real property (land or buildings) with a total value of at least $500,000 on a continuing basis. This test is most relevant to farming, market gardening, and other land-intensive activities.

The Other Assets Test

The business activity uses assets (excluding real property and certain motor vehicles) with a total value of at least $100,000 on a continuing basis. This test may apply to businesses with significant plant, equipment, or intellectual property.

If none of these four tests is satisfied, the loss must be deferred — unless the Commissioner's discretion applies or an exception for primary producers or professional artists is available.

The Commissioner's Discretion and Special Exceptions

Where a business does not satisfy any of the four tests, an individual may apply to the Commissioner of Taxation for a discretion to allow the loss to be used immediately. The Commissioner may exercise this discretion if the business requires a "lead time" to become profitable — for example, a new orchard that takes several years to produce fruit — or if special circumstances beyond the taxpayer's control caused the loss, such as a natural disaster, drought, or government-imposed restrictions.

Two important exceptions also apply to the NCL rules:

• Primary production activities — Individuals engaged in primary production (farming, fishing, forestry) may use losses immediately if their income from other sources is less than $40,000, regardless of whether the four tests are satisfied.
• Professional arts activities — Individuals whose business activity involves the creation of artistic works (writing, music, visual arts, film) may also use losses immediately if their income from other sources is less than $40,000.

Common Mistakes and Red Flags

The NCL rules are a frequent source of errors in individual tax returns. The following mistakes can result in ATO audits, amended assessments, and penalties.

• Claiming hobby losses as business losses — The ATO actively data-matches tax returns against industry benchmarks and business registration data. Claiming losses from an activity that does not meet the business tests is a significant audit risk.
• Failing to carry forward deferred losses correctly — Deferred NCL losses must be reported at the correct label in the tax return (Question 16 of the supplementary tax return) and tracked carefully from year to year. Errors in carrying forward deferred losses can result in either overpaying tax or incorrectly reducing taxable income.
• Assuming the $250,000 income threshold is straightforward — The income threshold includes not just taxable income but also reportable fringe benefits, reportable employer super contributions, and total net investment losses. Many taxpayers underestimate their "adjusted taxable income" for NCL purposes.
• Not applying for the Commissioner's discretion when eligible — Many taxpayers with legitimate start-up businesses fail to apply for the Commissioner's discretion, unnecessarily deferring losses that could have been used immediately.
• Ceasing the business without using deferred losses — If a business ceases permanently, any remaining deferred NCL losses are generally forfeited. Planning the timing of a business closure with a tax agent can help preserve the value of accumulated deferred losses.

Australian Regulatory Context

The non-commercial loss rules are administered by the ATO (Australian Taxation Office) under Division 35 of the Income Tax Assessment Act 1997. The ATO publishes detailed guidance on the NCL rules, including information on the four tests, the Commissioner's discretion, and the reporting requirements for deferred losses.

The Tax Practitioners Board (TPB) regulates registered tax agents in Australia. Only registered tax agents are legally permitted to provide tax advice and prepare tax returns for a fee. When seeking advice on non-commercial losses, always verify that your adviser is registered with the TPB through the TPB's public register.

The ATO's small business benchmarks are a key compliance tool. The ATO compares the income and expenses reported by small businesses against industry benchmarks to identify returns that appear inconsistent with normal business activity. Businesses that consistently report losses without meeting the NCL tests are at elevated risk of ATO scrutiny.

The ATO has also increased its use of data-matching technology in 2026, cross-referencing tax returns against bank transaction data, business registration records, and third-party reporting from platforms such as Airbnb, Etsy, and eBay. Taxpayers who operate online businesses or share economy activities should be particularly aware of their reporting obligations.

Questions to Ask Your Tax Agent

If you operate a business that is generating losses, the following questions will help you have a productive conversation with your registered tax agent.

1. Does my activity qualify as a business for tax purposes, or is it likely to be treated as a hobby by the ATO?
2. Does my business satisfy any of the four NCL tests, and can I use this year's loss immediately?
3. What is my adjusted taxable income for NCL purposes, including reportable fringe benefits and employer super contributions?
4. Should I apply for the Commissioner's discretion, and what evidence do I need to support the application?
5. How should I track and report deferred NCL losses in my tax return?
6. What records do I need to keep to demonstrate that my activity is a genuine business?
7. If I am considering closing the business, how can I structure the closure to preserve the value of any deferred losses?

How MyMoney® Can Help

The non-commercial loss rules are among the most complex provisions in Australian tax law. Getting them wrong can result in ATO audits, amended assessments, and penalties — or, equally, in unnecessarily deferring losses that could have been used to reduce your tax bill today. A registered tax agent with experience in small business taxation can assess your specific circumstances, apply the correct tests, and ensure your tax return is lodged accurately and on time.

MyMoney® connects Australians with experienced, registered tax agents who specialise in small business taxation, sole trader returns, and ATO compliance. Whether you need help determining whether your activity is a business or a hobby, applying for the Commissioner's discretion, or managing deferred NCL losses across multiple years, our marketplace makes it easy to find the right professional.

Post a Brief to receive tailored proposals from qualified tax agents, or Browse Tax Agents on the MyMoney® Marketplace today.