What is the current payroll tax interest rate in NSW, VIC and QLD?

All three states use the same formula: a market-rate component (based on 90-day bank bill yields) plus a fixed 8-percentage-point premium, reset quarterly in NSW and annually in VIC and QLD. Because the market component moves, the figure changes over time — check your state's current interest-and-penalty page rather than relying on a fixed number from an article.

Will I be penalised if I miss a deadline by only a few days?

You'll generally be charged interest on the unpaid amount for the period it was outstanding. Whether penalty tax also applies depends on why the payment was late — a genuine, isolated slip is treated very differently from a pattern of late or incorrect lodgements, and all three states apply no penalty where reasonable care was taken.

Does disclosing a mistake myself reduce the penalty?

Yes, substantially, in all three states — voluntarily disclosing an error before an audit or investigation begins is consistently treated far more leniently than being caught. VIC's published tiers, for example, drop from 25% to 5% for a pre-investigation voluntary disclosure on a reasonable-care-failure shortfall.

What's the difference between interest and penalty tax?

Interest compensates the state for the time value of unpaid tax and applies essentially automatically once a payment is late. Penalty tax is a separate, punitive charge that scales with culpability — how the shortfall happened and whether you disclosed it yourself. You can be charged one without the other, though a genuinely late payment usually attracts at least interest.

How often do I need to lodge payroll tax returns?

Most employers above a state's payer threshold lodge monthly, due 7 days after the end of each month (or the next business day). The final period folds into an annual reconciliation instead of a separate monthly return. Smaller employers may only need to lodge annually — check your specific state's registration requirements.

What happens if you miss a payroll tax deadline

Written by Cross State Payroll teamPublished 7 August 2026Last reviewed 14 August 2026

Payroll tax is self-assessed, which means nobody sends you a bill in advance — you work out what you owe and lodge it yourself. Missing that deadline, even by accident, has two separate financial consequences: interest on the unpaid amount, and potentially a separate penalty on top. Understanding how each one works — and how much control you have over the penalty component specifically — is worth more than knowing the exact current rate, because the rate changes and your behaviour after a mistake doesn’t.

The standard deadlines

In all three states, periodic (usually monthly) returns are due 7 days after the end of the period they cover, pushed to the next business day if the 7th falls on a weekend or public holiday. The final period of the year is folded into the annual reconciliation rather than lodged separately. Annual reconciliation due dates differ slightly by state — Revenue NSW has published 28 July for the 2026 and 2027 reconciliations, while SRO Victoria and the Queensland Revenue Office have both published 21 July. NSW also sets a specific registration threshold: an employer whose annual NSW liability is likely to exceed $20,000 needs to lodge and pay monthly rather than annually. Always check the specific date on your state’s current key-dates page, since these can shift slightly year to year around weekends and holidays.

How interest actually accrues

All three states charge unpaid tax interest calculated the same way: a market-rate component (based on 90-day bank bill yields) plus a fixed premium of 8 percentage points, set quarterly in NSW and annually in VIC and QLD. As published on their respective interest-and-penalty pages, NSW set its combined rate at 12.43% per annum for the quarter beginning 1 July 2026, and VIC and QLD published equivalent combined rates for their own current periods — all landing at a similar level, since all three use the same market-rate-plus-8-points formula. NSW waives interest amounts under $20.

To make this concrete: a business that’s $50,000 short and pays it 90 days late, at a 12.43% per annum rate, is looking at roughly $50,000 × 12.43% × (90 ÷ 365) — a little over $1,500 in interest alone, before any penalty tax. This is an illustrative calculation using the rate as published for that specific period, not a rate this site is asserting will still be current when you’re reading this — because the market component resets each period, always confirm the live figure on your state’s page before relying on it for your own numbers.

Penalty tax scales with how the shortfall happened

Penalty tax is separate from interest, and none of the three states apply it automatically — all three explicitly provide for a nil penalty where you took reasonable care, or the shortfall arose from circumstances genuinely beyond your control. Above that, the structure is broadly a two-tier system in each state, scaling from a lower rate for an unintentional failure to take reasonable care, up to a much higher rate for intentional disregard of the law:

VIC publishes the clearest published tiers of the three: a 25% base penalty for a failure to take reasonable care without intent, reducible to 5% for a voluntary disclosure made before an investigation begins, or 20% if disclosed only once an investigation is already underway — and increasing to 30% if there’s evidence of concealment or hindrance. For intentional disregard, the base rate is 75%, reducible to 15% for pre-investigation disclosure or 60% for disclosure during an investigation, rising to 90% with concealment or hindrance involved.
QLD publishes base rates of 25% for a failure to take reasonable care and 75% for intentional disregard or deliberate default — the same rate that applies automatically to a default assessment issued for non-lodgement. QRO also offers substantial reductions for voluntary disclosure made before any contact from the revenue office, though the precise scaling by disclosure timing is set out in detail in Public Ruling TAA060.2.7 and is worth reading directly rather than estimating.
NSW uses the same conceptual two-tier structure — a lower rate for an unintentional failure to take reasonable care, scaling up for intentional disregard, with reductions available for voluntary disclosure — but the precise percentage figures are set out in CPN 024 and are worth confirming directly against that guideline rather than from a general summary, since the exact tiering can be revised.

Every state substantially reduces or removes penalty tax where you make a voluntary disclosure before an audit or investigation begins — this is consistently the single biggest lever available if you realise you’ve underpaid. Disclosing early, in writing, before the revenue office finds the issue itself, is treated very differently from being caught.

Worked example: the value of disclosing first

Take a hypothetical QLD business that reviews its own records and discovers it underreported wages by $30,000 over the past year, purely through a failure to take reasonable care rather than anything deliberate. If it lodges a voluntary disclosure with QRO before the revenue office has made any contact about the issue, the base 25% penalty tier for a reasonable-care failure is substantially reduced — QRO’s published position is that early, pre-contact voluntary disclosure can bring the penalty down to nil in some categories. If the same business instead waits and is only caught through a routine QRO compliance check, the base 25% penalty is far more likely to apply in full, on top of the interest that’s accrued for the entire period the tax went unpaid. The dollar difference between those two paths, on a $30,000 shortfall, is the entire size of the penalty tier — which is why the disclosure timing matters more than almost any other variable in this process.

Common mistakes business owners make here

Assuming a few days late only costs interest. Depending on the reason for the delay, penalty tax can also apply — interest is close to automatic, penalty tax is not, but it’s not guaranteed to be nil either.
Assuming interest stops once you object to an assessment. It doesn’t — see our guide to what happens after an assessment.
Assuming disclosing after being contacted is treated the same as disclosing first. All three states draw a sharp line between voluntary, pre-contact disclosure and disclosure prompted by an investigation already underway.
Assuming the annual reconciliation date is the same across all three states. NSW’s published date differs from VIC and QLD’s.
Missing the NSW $20,000 monthly-payer threshold and wrongly lodging annually when monthly lodgement is required, or vice versa.

What to do next

Lodge and pay as soon as possible even if you’re already late, to stop interest accruing further.
If you’ve found a genuine past shortfall yourself, consider a voluntary disclosure before the revenue office makes contact — this consistently produces the best outcome across all three states.
Check whether you’re required to be a monthly or annual payer in each state you operate in.
Confirm the current interest rate on your state’s official page before estimating a cost — don’t rely on a fixed figure from an article.
Get professional advice from a registered tax agent if penalty tax is likely to apply, particularly for anything beyond a straightforward, isolated late payment.

If a missed deadline means you now need an accurate estimate of what you owe, start with the comparison calculator — then talk to your state revenue office about lodging a voluntary disclosure before they find it first.

Frequently asked questions

What is the current payroll tax interest rate in NSW, VIC and QLD?: All three states use the same formula: a market-rate component (based on 90-day bank bill yields) plus a fixed 8-percentage-point premium, reset quarterly in NSW and annually in VIC and QLD. Because the market component moves, the figure changes over time — check your state's current interest-and-penalty page rather than relying on a fixed number from an article.
Will I be penalised if I miss a deadline by only a few days?: You'll generally be charged interest on the unpaid amount for the period it was outstanding. Whether penalty tax also applies depends on why the payment was late — a genuine, isolated slip is treated very differently from a pattern of late or incorrect lodgements, and all three states apply no penalty where reasonable care was taken.
Does disclosing a mistake myself reduce the penalty?: Yes, substantially, in all three states — voluntarily disclosing an error before an audit or investigation begins is consistently treated far more leniently than being caught. VIC's published tiers, for example, drop from 25% to 5% for a pre-investigation voluntary disclosure on a reasonable-care-failure shortfall.
What's the difference between interest and penalty tax?: Interest compensates the state for the time value of unpaid tax and applies essentially automatically once a payment is late. Penalty tax is a separate, punitive charge that scales with culpability — how the shortfall happened and whether you disclosed it yourself. You can be charged one without the other, though a genuinely late payment usually attracts at least interest.
How often do I need to lodge payroll tax returns?: Most employers above a state's payer threshold lodge monthly, due 7 days after the end of each month (or the next business day). The final period folds into an annual reconciliation instead of a separate monthly return. Smaller employers may only need to lodge annually — check your specific state's registration requirements.