Key takeaways
- FTL penalties apply per document. A business with several overdue lodgements faces several separate penalties, not one shared cap.
- Penalty multipliers (2x for medium, 5x for large withholders) are based on withholding and turnover thresholds that catch many SMEs earlier than expected.
- The FTL penalty (for lodging late) and GIC (for paying late) are separate charges and can both apply to the same overdue obligation.
- From 1 July 2025, GIC and SIC are no longer tax-deductible, regardless of the income year the debt relates to, making an ongoing ATO balance more expensive than it was last financial year.
- A registered BAS agent provides both extended lodgement dates and safe harbour protection, neither of which is available to a business self-lodging.
- Individuals face the same base structure without the multipliers: $330 per 28-day period, capped at $1,650.
The penalty for a late tax return and BAS lodgement is calculated at one penalty unit, currently $330, for every 28 days, or part of a 28-day period, that a document remains overdue. For a small business, that caps at five units: $1,650. For a medium or large entity, the same structure applies at two or five times that rate. Critically, the penalty applies per document, so a business carrying several overdue lodgements at once isn’t facing one fine. It’s facing several, running on separate clocks.
That’s the part most guidance on this topic misses. A business doesn’t lodge one thing a year the way an individual does. It lodges BAS quarterly or monthly, payroll reports through Single Touch Payroll, an annual FBT return if it applies, and a taxable payments annual report in some industries, each with its own due date, and each capable of triggering its own penalty independently of the others.
If you’re an individual taxpayer rather than a business, the penalty for a late tax return in Australia rules are simpler. $330 for the first 28 days overdue, rising to a $1,650 cap, with no multiplier applied. The detail that actually matters for running a business sits below.
Why does this hit businesses harder than individuals?
An individual has one annual deadline and one document. A business with employees is juggling several obligation types simultaneously, each assessed separately for lateness, and each scaled by the size of the business at the time the document fell due. That sizing isn’t based on a single test. It’s based on how much the business withholds and how much it turns over, and a business can find itself reclassified into a higher penalty bracket from one year to the next as it grows.
How the ATO classifies your business for penalty purposes
The multiplier that applies to your business depends on two overlapping tests at the time a document was due:
- Small withholder: withholds $25,000 or less in the income year. Base penalty applies, no multiplier.
- Medium withholder: withholds more than $25,000 but less than $1 million, or had assessable income or GST turnover for the period between $1 million and $20 million. Penalty multiplied by 2.
- Large withholder: withholds more than $1 million, or had assessable income or turnover of $20 million or more. Penalty multiplied by 5.
- Significant global entity: penalty multiplied by 500, regardless of the withholding test.
A business doesn’t need to be large in the conventional sense to trip the medium threshold. A business turning over $1.2 million with a handful of staff already sits in the 2x bracket. It’s a lower bar than most owners assume.
The multiplier table
| Entity classification | Penalty per 28-day period | Maximum (5 periods) |
| Small/individual | $330 | $1,650 |
| Medium withholder | $660 | $3,300 |
| Large withholder | $1,650 | $8,250 |
| Significant global entity | $165,000 | $825,000 |
Per-statement stacking: why one missed BAS is rarely the real cost
Here’s where the exposure actually compounds. Take a business with five employees that falls behind on bookkeeping mid-year. If it misses two quarterly BAS lodgements and its annual taxable payments report, that’s three separate FTL penalties accruing on three separate timelines, not one $1,650 cap shared across the lot. For a medium withholder in the same position, each of those three penalties could independently reach $3,300.
This is also why a pattern of late lodgement gets treated differently from an isolated one. The ATO’s general approach to first-time, isolated lateness is more lenient than its approach to a business with a recurring lodgement history, and a business juggling multiple overdue statements at once tends to read, administratively, as the latter.
Late tax return penalty Australia: separating the FTL penalty from GIC
The FTL penalty and the general interest charge (GIC) get blurred together constantly, and for a business managing cash flow, the distinction matters more than it does for an individual.
The FTL penalty is charged for lodging late. It applies regardless of whether the business owes anything, and it’s a fixed amount based on the calculation above. GIC is charged for paying late, accrues daily on whatever balance remains unpaid from the original due date, and currently runs at around 11.17% per annum, compounding daily. A business can lodge on time and still rack up GIC on an unpaid balance, or lodge late and pay on time and only wear the FTL penalty. The two run independently, and a business that’s both late to lodge and slow to pay is carrying both at once.
The GIC deductibility change, and why it matters more for businesses carrying debt
Until 30 June 2025, GIC and shortfall interest charge (SIC) could be claimed as a tax deduction, which took some of the sting out of carrying an ATO balance. From 1 July 2025, under the Treasury Laws Amendment (Tax Incentives and Integrity) Act 2025, that’s gone. Any GIC or SIC incurred from that date is non-deductible, regardless of which income year the underlying debt relates to.
For a business that’s been treating an ATO payment plan as a manageable, semi-deductible cost of doing business, that calculation no longer holds. Refinancing a tax debt through a commercial facility can still produce a deductible interest expense where the borrowing is genuinely connected to the business, but the GIC itself, left to run, is now a pure cost with no offset. Businesses carrying an ongoing balance are generally better served by clearing it or refinancing it than letting it sit.
Safe harbour and the BAS agent concession
A registered BAS or tax agent changes two things for a business, not one.
First, the concession dates: businesses lodging through a registered agent receive extended due dates under the ATO’s agent lodgment program, typically a few weeks beyond the standard date, varying by quarter.
Second, safe harbour: provided the business supplied the agent with everything needed to lodge on time, and the agent’s failure to lodge wasn’t reckless or a deliberate disregard of the law, the business isn’t liable for the FTL penalty at all. That protection doesn’t exist for a business managing its own lodgements. There’s no equivalent safety net for a missed deadline that was genuinely the business’s own oversight.
There’s a quieter operational benefit too. A business whose books are maintained continuously through the quarter, rather than reconstructed in the days before a BAS is due, generally isn’t the business that ends up needing the concession in the first place.
How to avoid a penalty for a late tax return as a business
Separate the tax-related cash before it’s needed. Setting aside GST, PAYG withholding, and super in a dedicated account as it’s collected, rather than treating it as part of general working capital, removes the most common reason businesses lodge on time but pay late.
Track every obligation type on its own calendar, not one combined date. STP finalisation falls in mid-July, BAS falls quarterly or monthly, FBT and PAYG annual reporting sit elsewhere again. Treating these as one annual “tax time” event is how one missed deadline becomes three.
Engage early if a deadline is genuinely going to slip. The ATO generally makes contact before formally applying an FTL penalty. A business that responds in that window has materially more options than one that goes quiet.
Use a registered BAS agent once the business has employees or more than one income stream. The combination of extended dates and safe harbour protection is difficult to replicate through DIY lodgement, and the ongoing bookkeeping discipline it requires tends to prevent lateness rather than just protect against the penalty for it.
Requesting a remission
Where a penalty has already landed, the ATO can remit all or part of it based on the circumstances that caused the delay, though the outstanding document generally needs to be lodged first. For a business, accepted circumstances have typically included things like a key staff member’s serious illness disrupting the bookkeeping function, a system migration or data loss genuinely outside the business’s control, or a natural disaster affecting trading. A pattern of “we were busy” across multiple periods is treated very differently to a single, explainable disruption.
If your lodgements are already behind
A backlog of BAS statements or a missed STP finalisation doesn’t resolve itself, and with GIC compounding daily and no longer deductible, the cost of leaving it grows in the background even before a penalty notice arrives. We work with Victorian small businesses to get lodgements current, request remission where it’s genuinely warranted, and put a process in place so multiple obligation types stop competing for attention at the same time. Talk to us about where things stand. Contact us today.
Frequently asked questions
How much is the penalty for a late tax return for a business?
The base rate is $330 per 28-day period overdue, capped at five periods. For a medium withholder, that’s $660 per period (up to $3,300); for a large withholder, $1,650 per period (up to $8,250). Because the penalty applies per document, a business with multiple overdue lodgements, say two BAS periods and an annual report, can be facing several of these penalties running concurrently.
Is there a penalty for a late tax return if the business is due a refund or reports a nil result?
Generally, the ATO doesn’t issue an FTL penalty notice in that case, but it’s an administrative practice, not an automatic exemption. It doesn’t apply if a penalty notice was already issued before lodging, the document is a third-party data report, such as a taxable payments annual report, or the business is classified as a large withholder.
How to avoid a penalty for late tax return obligations across multiple BAS periods?
Treat each lodgement type on its own calendar rather than one combined “tax time,” separate GST and PAYG funds as they’re collected rather than at lodgement, and engage a registered BAS agent once the business has employees. The extended due dates and safe harbour protection materially reduce the risk of one missed period becoming several.
Does the same penalty apply to BAS as it does to an income tax return?
Yes. The FTL penalty framework applies across activity statements, income tax returns, FBT returns, PAYG withholding annual reports, STP finalisations, and taxable payments annual reports alike, each assessed and penalised independently.
Can a late tax return penalty be remitted for a business?
Yes, based on the specific circumstances behind the delay, generally, once the outstanding document has been lodged. Genuine, isolated disruptions, illness affecting a key team member, a system failure, or a natural disaster tend to be viewed more favourably than recurring lateness attributed to being busy.
This guide reflects ATO guidance as at 29 June 2026. It’s general information, not advice for your specific circumstances. Speak with a registered BAS or tax agent before acting on anything here.
