Understanding ATO Rules on Business Losses for Sole Traders

Sole Trader Business Losses - What You Can Claim and When

Business losses are common - especially in the early stages of a venture or when trading conditions tighten. But for Australian sole traders (and partners in a partnership), the tax treatment of those losses isn’t always straightforward.

Under the ATO’s non-commercial loss rules, you may not be able to use a business loss to reduce your tax bill straight away - even if the loss is genuine and your accounting records are correct. Instead, the loss may need to be quarantined and carried forward until you meet certain conditions.

At Symmetry Accounting & Tax Pty Ltd, we regularly help clients navigate these rules as part of practical accounting, taxation, and business advisory support - so there are no surprises at tax time.

What is a non-commercial business loss?

A non-commercial loss generally refers to a loss made by a sole trader (or partnership) from a business activity that the tax rules treat as not yet “commercial” for offset purposes.

In simple terms:

• You can’t always deduct that loss against other income (like wages, interest, dividends, or rent) in the same year.

• If it can’t be claimed now, it is typically carried forward until the business becomes eligible to use it.
  

This is a tax integrity measure designed to prevent losses from hobby-like or secondary activities being used to reduce tax on unrelated income.

Step 1: Check the income requirement (the $250,000 threshold)

Before you even look at the ATO tests, there’s an income gateway.

As a general rule, to offset a sole trader loss against other income in the same year, your relevant income from other sources must be below $250,000. This calculation includes items such as:

• taxable income (before certain investment losses), and

• reportable fringe benefits and reportable superannuation contributions.
  

If you’re over the threshold, your business loss is more likely to be treated as non-commercial and may not be immediately deductible - unless an exception applies.

Step 2: If under $250,000 - pass one of the four ATO tests

If your income is below the threshold, the ATO then looks at whether the activity shows signs of being a commercially viable business. You only need to satisfy one of the following tests.

1) Assessable income test (revenue test)

You may pass if the business generates at least $20,000 in assessable income for the financial year.

Practical tip: Good bookkeeping and correct revenue recognition matter here. Clean accounting can be the difference between meeting the test or missing it by a small margin.

2) Profits test (track record of profitability)

You may qualify if the business has made a profit in 3 out of the last 5 years.

This test is often relevant for businesses that had a slow start but are becoming stable.

3) Real property test (land/buildings used in the business)

You may pass if the business uses real property (such as land or buildings) worth $500,000 or more (typically based on the value used for the test).

4) Other assets test (business assets excluding real property)

You may pass if the value of other assets used in the business is at least $100,000, excluding real property. This can include plant and equipment, machinery, tools, and vehicles used in the business.

What happens if you don’t pass a test (or you exceed the income threshold)?

If you don’t meet the income requirement or fail all four tests, the loss is usually deferred (quarantined).

That means:

• you generally can’t claim it against other income this year, but

• you can carry it forward and potentially use it in a later year once you meet the criteria.
  

So, the loss isn’t “wasted” - it’s just locked until the rules allow it to be applied.

Business advisory insight: If you’re close to passing a test, it may be worth planning ahead -reviewing pricing, revenue strategy, asset purchases, or timing of business decisions- so your tax outcome aligns with commercial reality.

Key exceptions and special circumstances

The non-commercial loss rules don’t apply in the same way to everyone. Some taxpayers may still be able to claim losses sooner, including:

• primary producers, and

• professional artists (in certain circumstances).
  

There can also be relief where the business was impacted by special circumstances beyond your control - such as severe events that materially affected trading conditions. In some situations, taxpayers may seek ATO consideration.

Because exceptions are fact-specific, it’s important to get advice before lodging - particularly where there’s a material deduction at stake.

Why this matters for your accounting and taxation strategy

These rules can affect:

• your expected tax refund (or tax payable),

• cash flow planning, and

• how you evaluate the viability of a business activity over time.
  

They can also influence broader planning discussions- like how aggressively to reinvest, whether restructuring is worthwhile, and how business performance impacts personal goals.

And while SMSF strategies sit in a separate regime, real-world planning often overlaps when losses are deferred, your available cash flow and taxable position may change, which can flow into decisions about super contributions, investment timing, and overall wealth strategy. This is where coordinated business advisory support makes a genuine difference.

How Symmetry Accounting & Tax Pty Ltd can help

If you’re unsure whether your losses are immediately deductible- or you want to avoid unexpected outcomes- professional guidance can save time, stress, and money.

At Symmetry Accounting & Tax Pty Ltd, we help sole traders and business owners with:

• year-round accounting and reporting clarity,

• compliant taxation outcomes (including non-commercial loss rules), and

• forward-looking business advisory planning to support sustainable growth.
  

If you’d like us to review your situation, we can assess eligibility, confirm supporting documentation, and plan ahead for the best legitimate outcome.

General disclaimer

This article is general information only and does not consider your personal circumstances. Tax outcomes depend on your specific facts, and rules may change. For advice tailored to your situation, contact Symmetry Accounting & Tax Pty Ltd.