The new-employee 20-business-day rule under Payday Super

Most contributions are due 7 business days after payday. The first contribution for a new employee gets 20 business days. It sounds simple; the trap is the pay run after it.

Published 7 September 2026; updated 4 October 2026. ATO QC105846 quoted as last updated 10 August 2026; the rehire wording is from its 29 September 2026 update.

The rule

You may have longer to make the contribution in some situations. For example, the contribution must be received by the super fund within 20 business days after the relevant QE day (payday) in certain circumstances. ATO, Payment deadlines for Payday Super (QC105846)

The circumstance that matters day to day is a new employee's first payment of qualifying earnings. The practical reason a longer window is useful is obvious to anyone who has onboarded a starter: the fund details — a choice-of-fund form, a stapled-fund request — are often not in hand on the first payday, and a contribution sent to the wrong account is not an on-time contribution. The exact conditions are on the ATO page above; if a situation is not squarely inside them, count 7.

Business days are counted the same way as for every other deadline: weekends and every state-wide public holiday in Australia are skipped, wherever the employer is. See the holidays guide.

The ATO's worked example

When Hannah makes her first payment of qualifying earnings to Mary on 9 July 2026 (QE day 1), Hannah's first contribution to Mary's super fund has a later due date of 7 August 2026, which is 20 business days after QE day 1. […] the contribution must be received by Mary's super fund within 7 business days of 30 July 2026, which is 11 August 2026. (Note that the due dates for QE day 1 and QE day 2 both include an additional day because the Picnic Day holiday in the Northern Territory is not counted as a business day.) ATO, QC105846, Example 1

Both dates reproduce exactly in SuperDue's engine and are pinned in its test suite. Note that the 20-day count is not "about a month": with Picnic Day in the window it runs from 9 July to 7 August, and a first pay in late December runs well into January.

The bunching rule: what happens to the second pay run

A fortnightly employee paid first on 9 July is paid again on 23 July. On its own, a 23 July payday is due 7 business days later — Tuesday 4 August. But the first pay's window is still open until 7 August, so the ATO's bunching rule applies:

Sometimes you may have a later due date to make super guarantee contributions for a QE day (payday) but the due date for the next QE day is before the later due date for the first QE day. In this situation, the due date for the second QE day is the same as the later due date for the first QE day. ATO, QC105846, "Bunching rule for overlapping due dates"

The rule only ever moves a date later. It never shortens a window, and it stops applying the moment a regular run's own deadline falls after the extended one.

The SuperDue dashboard applies the bunching rule automatically: once a new-employee pay run is logged for a client, any later regular run whose own deadline falls inside that window is shown with the later date, whichever order the runs were entered in. The free checker sees one pay run at a time, so it shows the earlier, unbunched date and explains the rule.

The two mistakes

• Treating the second pay as if it also had 20 days. It does not. It has 7, lifted to the first pay's date only while that window is open. A third pay run treated as "new employee, 20 days" is late by nearly two weeks.
• Applying 20 days to an employee who is not new. An existing employee who changes fund, returns from leave or moves between entities within a group is not automatically a new employee for this purpose. When in doubt, count 7 — being early costs nothing.

Rehired workers get the 20 days too. The ATO added this to QC105846 on 29 September 2026: If you've rehired or recommenced work with someone under a new arrangement, you have a longer time to pay the first super guarantee contribution. The first contribution after the rehire must be received within 20 business days of payday, the same as for a new starter. The fund limb is narrower than it sounds: it covers a replacement fund, one you start paying after you have stopped making contributions to another fund, not a second fund paid alongside the old one.

A third, quieter one: the 20-day window is counted in business days, so a first pay in the second half of December runs past the Christmas cluster (25 December, the Monday 28 December substitute in every state, New Year's Day). Don't estimate it; count it.

How SuperDue handles it

When a pay run is logged with the 20-day window flag (new or rehired worker, or a replacement fund), the deadline is computed at 20 business days and the run is shown as extended. Any later regular run for the same client whose own deadline falls inside that window is lifted automatically, and drops back if the extended run is deleted or corrected. The free checker has the same flag if you want to test a date without an account.

Planning information, not tax, legal or financial advice. The legal test is the date the fund receives the money with the information needed to allocate it. Confirm anything that matters with the ATO or your registered tax or BAS agent. Sources are linked in the text; ATO pages are quoted as at the date shown at the top of this guide.