Most trade and service business owners still treat a tax debt as a private problem. Something between you and the ATO, embarrassing but contained, invisible to everyone whose opinion of your business actually matters — the bank, the equipment financier, the supplier who gives you 30 days on materials.
That stopped being true a while ago, and a lot of owners haven't caught up. The ATO can disclose an overdue business tax debt to credit reporting bureaus. Once it's there, it sits alongside your defaults and your credit enquiries, and anyone running a check on your ABN can see it.
This is not a threat that gets used once a decade. The ATO publishes the criteria, the process and the list of bureaus it reports to. It's a standing part of how the ATO collects money, and the threshold is low enough that a business turning over $1.5m can cross it in a bad year without doing anything exotic.
The four conditions
The ATO says it may report your business tax debt if you meet all of the following: you have an ABN and are not an excluded entity; you have one or more tax debts and at least $100,000 is overdue by more than 90 days; you are not engaging with the ATO to manage the debt; and you don't have an active complaint with the Tax Ombudsman about the ATO's intent to report.
Excluded entities are deductible gift recipients, complying super funds, registered charities and government entities. Which is to say: not you.
Read the second condition properly, because the wording does a lot of work. It's one or more tax debts, totalling at least $100,000. Not a single monster assessment. A couple of unpaid BAS, some PAYG withholding, an income tax bill from a good year that you never quite cleared — they add up to the same number. And "overdue by more than 90 days" is a shorter clock than it sounds when you're lodging quarterly.
The third condition is the one that decides your outcome, and it's the one you control.
What "engaging" actually means
The ATO is explicit that it will not report your debt if you're already engaged with it — even if the debt is $100,000 or more. Effectively engaging means any one of the following has happened: you have a payment plan and you are complying with the terms of the arrangement; you've applied for release from the tax debt; you have an active objection against a taxation decision the debt relates to; you have an active review with the Administrative Review Tribunal or an active appeal to the court; or you have an active complaint with the Tax Ombudsman about the debt.
Notice the qualifier on the first one. Not "you have a payment plan." A payment plan and you are complying with the terms of it. A plan you defaulted on in March is not engagement. It's a paper trail showing you were asked and you didn't.
That's the trap I see most often. Owners set up a payment plan in a moment of resolve, size the instalments off an optimistic month, miss two, and never ring to renegotiate because the conversation feels humiliating. The plan quietly lapses. From the ATO's side, nothing separates that business from one that ignored the letters entirely.
Worth knowing what does not count: the ATO says cash flow issues or financial hardship are not generally considered exceptional circumstances for stopping disclosure. Exceptional circumstances means family tragedy, serious illness, natural disaster — things outside your control. Being short of money is the ordinary case, not the exception.
You get 28 days
The ATO sends a written notice before it discloses anything. The letter tells you it intends to report your debt, that you meet the criteria, what it plans to report, what steps you can take to stop it, and that you have 28 days from receiving the notice to act.
Twenty-eight days is enough time to put a payment plan in place. It is not enough time if the letter sits in a pile of mail at the office for three weeks because you only open things that look like they're from a customer.
What gets reported is your ABN, your legal name and business name, your entity type, and the amount of the overdue debt. The bureaus registered with the ATO to receive it include CreditorWatch, Equifax and Experian — the same names your suppliers and financiers already subscribe to. It comes off the report when you no longer meet the criteria, which means either paying in full or effectively engaging.
The interest got more expensive than you think
There's a second change most owners have missed, and it's arguably worse than the credit file.
General interest charge accrues daily and compounds on the amount overdue. For the July–September 2026 quarter the annual GIC rate is 11.43%. That alone is a number worth respecting on a six-figure balance.
But GIC and shortfall interest charge incurred on or after 1 July 2025 are no longer deductible. The law change applies to assessments for income years starting on or after that date. For decades, ATO interest was a business expense like any other, and the deduction quietly absorbed a chunk of the pain. That subsidy is gone.
Gold nugget. Run the after-tax comparison before you decide the ATO is your cheapest lender. If your company pays tax at 25 cents in the dollar, a deductible 11.43% used to cost you about 8.6% after tax. Non-deductible, it costs the full 11.43% — the same real cost as a deductible facility at roughly 15%. So an equipment finance line or an overdraft at 12% deductible is now genuinely cheaper money than leaving the debt with the ATO, which is the reverse of what most owners assume. Ask your accountant to price both, in after-tax terms, on your actual balance. The answer surprises people.
What to do if you're anywhere near the line
Find out the real number first. Not the number you remember — the integrated client account balance, today, including every unpaid BAS, PAYG withholding and income tax liability. Most owners underestimate it, because they're carrying the figure from the last time they looked.
Then work out how much of it is more than 90 days old. That's the figure that matters for disclosure, not the total.
If you're over $100,000 and aging, ring the ATO before the letter arrives rather than after. A payment plan you proposed is a different conversation from a payment plan you agreed to under a deadline, and it lets you size the instalments off what the business can genuinely sustain — which is the only kind of plan that survives contact with a slow month. Lodging on time even when you can't pay matters here too, because lodging and paying are separate obligations, and that sequencing is covered properly in what to do when you can't pay your BAS.
And understand where this sits in the escalation. Credit reporting is unpleasant but survivable — it makes finance harder and more expensive. The step that reaches into your personal life is the director penalty notice, which turns company tax debt into your own liability, and that's worth reading about separately in director penalty notices.
The underlying fix is never the phone call, though. It's that the GST and PAYG withholding you collect were never your money, and they got spent because nothing in the business flagged that they were owed. A 13-week cash flow forecast puts every lodgment on the calendar weeks out, which is the difference between choosing to pay late and discovering you have to.
If your tax position has been drifting and you're not sure how close to the line you actually are, that's exactly the kind of thing the Business Health Check is built to surface — a fixed-price review of your numbers, your pricing and your cash cycle, with a written plan of what to fix first. Or start with the free five-minute scorecard if you'd rather see where you stand before talking to anyone.