Paying staff super a few days late used to feel like a minor slip. A Melbourne tax adviser says it is now enough to set off an ATO letter. Nitin Saby reports a jump in super guarantee charge letters produced by data matching, including for clients who did pay, just not on time. The letters relate to the old quarterly rules, but the system that replaced them on 1 July works very differently.

A restaurant group, a cash-flow crunch and a 10% bill

Mr Saby, managing director of Saby Group & Co., described the trend on 1 November.

One client, a Melbourne restaurant group, paid super late without meaning to because of cash-flow problems. It was told to lodge a super guarantee charge (SGC) statement by a set date and to pay 10% interest. According to Mr Saby, the ATO would not negotiate on that interest and "doesn't want to budge".

"Any mismatch, even a day or two, gets flagged as a potential Superannuation guarantee shortfall," he said.

He was also clear that the letters are not baseless. "The ATO isn't fabricating discrepancies," he said. In other words, the matching is picking up genuine lateness, and the rules treat lateness harshly.

Mr Saby linked the increase to data matching, which allows the ATO to compare what Payroll says employees earned with what funds say they received, and when. A payment that arrives after the deadline shows up even if the money was eventually paid in full.

Why late is not the same as paid

Under the quarterly regime that applied before 1 July 2026, super had to reach the fund by each quarterly due date. Miss it, even by a day, and the employer was liable for the SGC rather than just the original contribution.

As Mr Saby put it: "A late payment doesn't cure the SGC liability."

According to the ATO, the old SGC Carried Interest at 10% a year and a flat administration fee, and it was not tax-deductible. That combination is what makes a short delay costly: the Business pays more than the super it owed and gets no deduction for the extra.

Under long-standing rules, the old SGC was also calculated on an employee's salary or wages, which can be a wider base than the ordinary time Earnings used for regular contributions.

What changed on 1 July

Payday Super took effect on 1 July 2026. Employers now pay super with each pay cycle rather than quarterly, and contributions generally have to reach the fund within seven business days of payday.

The ATO's guidance on Payday Super sets out the main changes to the charge. The ATO now assesses the SGC, rather than relying on employers to self-assess through a statement. Interest is charged at the general interest charge (GIC) rate instead of a flat 10%, and the charge is now deductible.

Penalties have also changed. From 1 July 2026, the ATO says penalties are 25% or 50% of unpaid SGC, depending on whether there are prior penalties. The previous maximum was 200%.

The practical effect is a shift in who starts the process. Before July, a late-paying employer was expected to put its hand up and lodge a statement. Now the ATO assesses the charge, using data it already holds, so problems are likely to surface faster whether or not the employer acts first.

Hypothetical example: what a late payment can cost

Hypothetical example: A cafe's staff earn $50,000 in a quarter under the old rules. At 12%, the super owed is $6,000.

The cafe misses the deadline. If interest at 10% a year runs for about six months, it adds roughly $300 ($6,000 × 10% × 0.5), plus the administration fee. None of that is deductible.

Now take the same $6,000 shortfall as unpaid SGC under the new rules. A 25% penalty would be $1,500, and a 50% penalty would be $3,000. The old maximum of 200% would have been $12,000.

Deductibility also changes the after-tax cost. Under the new rules the charge itself is deductible. For a company paying tax at 25%, every $1,000 of deductible charge would cost $750 after tax. Under the old rules, the same $1,000 cost the full $1,000.

These figures are simplified. The real SGC includes other components and depends on the wage base, the dates and the employer's history.

How the ATO says it chooses its targets

Under Payday Super, the ATO compares STP year-to-date qualifying earnings with the contributions funds report and the dates the funds receive them.

Its guidance lists common reasons the data may not match: a missing ABN in the SuperStream message, an ABN that differs from the one in STP, workers who cannot be matched, and late or incorrect STP reports.

In the first year, from 1 July 2026 to 30 June 2027, the ATO says it will prioritise employers who paid no SG or paid less than the minimum. Employers who pay on time and in full and fix errors promptly are "not expected to be the focus" of compliance action.

That is reassuring for careful payers. But it leaves less comfort for businesses with old quarterly lateness, which is what the current wave of letters is about.

What to watch

  • 13 November: comments close on the ATO's draft practice statement PS LA 2026/D4, which deals with SG assessments the Commissioner initiates.
  • December 2026: the ATO's targeted consultation on the design of a Payday Super wholesale voluntary disclosure process is expected to finish.
  • 30 June 2027: the end of Payday Super's first year, during which the ATO says it will focus on non-payers and underpayers.

For businesses still dealing with old quarters, the lesson from Mr Saby's files is simple: on super, a day or two late can still count as unpaid.