Loss Carry-Back Returns: Refundable Losses for SMB

The 2026-27 Federal Budget, handed down on 12 May 2026, restores loss carry back for small and medium businesses, giving eligible companies the ability to convert a current-year tax loss into a real cash refund against income tax paid in the previous two financial years. If your company is heading into a loss year after several profitable ones, this measure could put money back in your account rather than leaving it stranded as a carried-forward deduction.

Disclaimer: This article provides general information only and does not constitute tax advice. Tax law is complex and individual circumstances vary significantly. Consult a registered tax agent or your accountant before making decisions based on this measure.

What the Budget Restored

The 2026-27 Budget restores the loss carry-back mechanism for companies, as confirmed in Budget Paper No. 2. The measure had previously operated during the pandemic period and lapsed. Under the restored rules, a company that records a net tax loss in the current income year can elect to carry that loss back against taxable income (and the tax already paid) from the prior two income years. The result is a refundable tax offset: the ATO effectively writes a cheque for the tax you overpaid relative to your actual economic outcome across the period.

The offset is claimed in the loss year's company tax return and works as a proxy for the tax the company would have saved had it deducted the loss in those earlier years. Rather than waiting years to use a carried-forward loss against future profits (which may or may not arrive), eligible companies receive a cash refund now. The Government estimates the measure will benefit up to 85,000 companies, mostly small businesses.

The measure takes effect from 1 July 2026, meaning it applies from the FY2026-27 income year onwards. Companies that have already lodged for years prior to that date cannot retroactively apply it to those earlier losses. A FY2026-27 loss can be carried back against FY2024-25 and FY2025-26 tax payments, and each later loss year looks back to the two income years before it.

Who Qualifies

Companies (Pty Ltd, Ltd) only

Loss carry-back is available exclusively to companies (proprietary limited companies, public companies and other corporate entities). If you operate as a sole trader, partnership, or trust, you are not eligible. Those structures have their own loss rules: a loss generally offsets other assessable income in the same year, with any unabsorbed excess carried forward to reduce income in future years, although for sole traders and individual partners the non-commercial loss rules can defer a business loss to a later year instead. There is no cash refund mechanism for non-corporate entities.

Aggregated turnover under $1 billion

The measure applies to companies with aggregated turnover below $1 billion. For the vast majority of Australian SMEs, this threshold is not a practical barrier. Aggregated turnover includes the turnover of any entities connected to or affiliated with the company, so group structures with multiple entities should check the consolidated position.

Must have paid tax in prior 2 income years

You can only carry back a loss against tax that was actually paid. If your company paid no income tax in FY2024-25 and FY2025-26 (because it was already loss-making, broke even, or had offsets that eliminated the liability), there is nothing to carry back against, and no refund will be generated. The refund is capped at the total tax paid across those two prior years. The company also needs its tax returns lodged for the loss year and each of the 5 income years before it, unless a return wasn't required or the ATO has already assessed that year.

Cannot be used by sole traders, partnerships, or trusts

This cannot be overstated: the refundable offset is a company-only concession. If your business is not incorporated, the measure does not apply to you. If you have been considering whether to incorporate, the combination of the 25% flat rate, loss carry-back, and the permanent Instant Asset Write-Off creates a materially different tax environment for companies than existed even two years ago. See our sole trader vs company guide for a full structural comparison.

How the Refund Mechanism Works

The process follows a clear sequence, though the mechanics sit inside your company tax return and interact with your franking account:

• Calculate your current-year tax loss. Your accountant works out the company's net tax loss for the income year, where total allowable deductions exceed total assessable income.
• Look back two income years. The eligible lookback window covers the two income years immediately prior to the loss year. For a FY2026-27 loss, that means FY2024-25 and FY2025-26.
• Apply the loss against tax paid in those years. The loss is multiplied by the applicable company tax rate (25% for base rate entities) to calculate the maximum offset. This offset is then applied against the tax actually paid in the lookback period.
• Receive a cash refund, capped by two limits. The refund cannot exceed (a) the total income tax paid in the two prior years, and (b) the company's franking account balance at the end of the loss year. The franking account cap prevents companies from creating refunds they have not funded through actual tax payments.

The ATO's page on the loss carry back tax offset confirms that the offset is refundable, meaning it can take your tax liability below zero and generate an actual payment to the company. That is the distinguishing feature that makes this measure valuable.

Worked Example (Illustrative)

The following example uses assumed figures for illustration only. It does not represent advice for any specific company. Actual outcomes depend on individual circumstances, the correct application of tax law, and advice from a registered tax agent.

Acme Pty Ltd is a base rate entity (25% tax rate) in the building services sector.

Total tax paid in the two-year lookback window: $40,000.

Under loss carry-back, Acme calculates its refundable offset as: $30,000 loss × 25% = $7,500.

Provided Acme's franking account balance is at least $7,500 at the end of FY2026-27, it can elect to carry back the full $30,000 loss and receive a $7,500 cash refund. The franking account balance is then reduced by $7,500 to reflect the returned tax.

Without loss carry-back, Acme's $30,000 loss would sit as a carried-forward deduction, available to offset future profits only, and only if those profits materialised. The carry-back converts an uncertain future deduction into a certain present-day refund.

Records You Need to Claim

The records required to support a loss carry-back claim go beyond what many companies keep as a matter of course:

• Prior-year tax assessments for both lookback years (FY2024-25 and FY2025-26). You need to establish exactly how much tax was paid in each year.
• Current-year loss calculation with full supporting workpapers: a clear reconciliation from accounting profit to taxable loss, with each adjustment documented.
• Franking account statement showing the balance at the end of the loss year, which is the figure that caps the refund. The ATO can and does audit franking account balances, particularly when a refund is claimed.
• Receipts and invoices for all expenses in the loss year. Every deduction that contributes to the loss must be substantiated. A $30,000 loss built partly on $12,000 of equipment purchases, $8,000 in contractor invoices, and $10,000 in software subscriptions needs every one of those expenses documented with a compliant receipt or tax invoice.

The ATO's general rule is to keep records for 5 years from when you prepared or obtained them, or completed the transaction, whichever is later, and longer if a later assessment relies on them, for example when part of a loss is carried forward. ASIC also requires companies to keep financial records for 7 years, so keep digital copies of all receipts for at least seven years.

Interaction with Permanent IAWO

The restored loss carry-back has a direct and powerful interaction with the permanent Instant Asset Write-Off, also confirmed in the 2026-27 Budget. A company that makes significant capital investment under the permanent IAWO, writing off plant, equipment, or tools immediately rather than depreciating over several years, may generate or significantly deepen a tax loss in the investment year. Under previous rules, that IAWO-driven loss would simply carry forward. Under loss carry-back, it can be converted into a cash refund against tax paid in the prior two years.

This changes the investment calculus for companies that have had profitable years followed by a heavy capital expenditure year. The loss is no longer a future-value deduction. It becomes a present-value cash return, effectively accelerating the tax benefit of the IAWO investment.

Strategic Use Cases

Loss carry-back is not a niche measure. Several common business scenarios produce exactly the conditions it is designed for:

• Companies hit by a revenue downturn. A profitable business that loses a major client, faces supply chain disruption, or absorbs an unexpected cost event may record a loss year after several profitable ones. Carry-back converts that economic setback into a partial cash recovery. The cash flow management principles that apply during a downturn are reinforced by the existence of a cash refund mechanism rather than a future-only offset.
• Businesses making heavy capital investment. As noted above, a large IAWO claim that pushes a company into a tax loss is now a carry-back candidate. Capital expenditure planning should model the loss position explicitly.
• Loss-making subsidiaries within a group. Where a corporate group does not consolidate for tax purposes, individual entities that have paid tax in prior years and are now loss-making can separately access carry-back. Group tax strategy should assess each entity's position.
• Companies recovering from a disrupted trading period. Any business that had two or more profitable years before a loss year, whatever the cause of the loss, meets the structural conditions for carry-back. The measure is not limited to COVID-related or externally caused losses.

Common Mistakes to Avoid

• Assuming sole traders can use it. They cannot. The measure is company-only. Operating as a sole trader with an ABN is not sufficient. The entity must be a company.
• Forgetting the franking account reduction. The refund is not free money from the government. It is a return of tax previously paid, and it reduces the franking account accordingly. If you plan to pay fully franked dividends, the refund and the dividend need to be sequenced carefully with your accountant.
• Attempting to carry back more than prior-year tax paid. The refund is capped at the total tax actually paid in the two lookback years. If you paid $10,000 in tax across both years but have a loss that would otherwise generate a $20,000 offset, you receive $10,000, not $20,000.
• Not keeping records for the full loss year. The ATO can audit every deduction that contributed to the loss. If your loss year expense records are incomplete, the ATO can disallow deductions and reduce or eliminate the loss, and the refund with it. Record-keeping in the loss year is as important as in any profitable year.

Frequently Asked Questions

When does loss carry-back take effect?

From 1 July 2026 (the FY2026-27 income year). Companies with current-year tax losses can carry them back against tax paid in the previous two income years to generate a cash refund. Losses arising before 1 July 2026 under this restored measure are not eligible.

Who qualifies for loss carry-back?

Companies (not sole traders, partnerships, or trusts) with aggregated turnover under $1 billion. Eligible companies must have paid income tax in at least one of the prior two income years that the loss can offset. They must also have lodged their tax returns for the loss year and each of the 5 income years before it, unless a return wasn't required or the ATO has already assessed that year. The refund is capped at the total tax actually paid in the lookback period.

Can sole traders use loss carry-back?

No. Loss carry-back applies to companies only. A sole trader's business loss can offset other assessable income in the same year only if the non-commercial loss rules allow it (broadly, income under $250,000 plus passing one of four tests, such as at least $20,000 of assessable income from the business). Otherwise the loss is deferred and carried forward to a later year. There is no cash refund mechanism for sole traders, partnerships, or trusts under this measure.

How much refund can I get?

The refund is capped at two limits: the company's total prior-year income tax paid across the two lookback years, and the franking account balance at the end of the loss year. You cannot receive a refund larger than the tax you actually paid, and you cannot receive a refund that would take the franking account below zero.

What records do I need to claim?

Prior-year tax assessments for both lookback years, a current-year loss calculation with full supporting workpapers, a franking account statement, and complete substantiation for all expenses in the loss year. The ATO can audit every deduction that contributed to the loss. Keep digital receipts for at least seven years, the period ASIC requires companies to keep financial records.

Does this affect my franking credits?

Yes. The refund reduces the franking account balance by the refund amount. If you intend to distribute franked dividends after claiming carry-back, plan the sequence with your accountant. The interaction between the refund and your franking account is not optional: it is a statutory requirement of the mechanism.

Loss carry-back rewards companies that documented their loss year carefully. Every deduction that contributes to the loss needs a compliant receipt or tax invoice behind it, and the ATO can and does audit them. Taxr captures every business expense the moment it happens: fuel receipts, contractor invoices, software subscriptions, equipment purchases. Taxr suggests a tax category for each one for you to confirm, and you (or your accountant, through the accountant portal) can export them as an Excel or PDF report. When the loss year arrives and your accountant needs to substantiate a $30,000 deduction pool, your records are already complete. If you manage client companies through the accountant portal, visit Taxr for Accountants to see how the workflow fits your practice. And if you want to check your own tax position as a sole trader before deciding whether to incorporate, our sole trader tax calculator can help. Download Taxr and make sure the loss year is the one year your records are perfect.