HR teams rarely set out to become tax planners. Yet payroll sits at the center of how a company meets its obligations. Every pay run feeds into superannuation, withholding, and the wider compliance calendar. When a deadline slips, the people team often feels it first.
That pressure is easy to manage once the dates are mapped out. A clear schedule of key ATO due dates for australian businesses turns a stressful scramble into a routine task. Payroll managers can plan cash, brief leaders, and avoid late penalties. This guide focuses on the dates that touch HR most often, drawn from the official 2025-26 schedule. Keep them in one place, and the year becomes far easier to run.
Why the Tax Calendar Belongs On the HR Desk
Payroll and tax obligations move on the same clock. Each pay cycle creates a record that later rolls into a quarterly or annual return. A missed step in payroll usually shows up as a missed deadline weeks later.
HR also owns the data that auditors ask for. Wage records must be kept for 7 years under Australian rules, which means accurate files matter long after a staff member leaves. Strong workforce metrics make that easier, because clean numbers feed straight into compliance.
Three obligations sit closest to the people team:
- Pay as you go (PAYG) withholding from employee wages.
- Superannuation guarantee contributions for eligible staff.
- Single Touch Payroll reporting on each pay event.
When these run on time, the rest of the calendar tends to fall into place. Each one ties back to a pay cycle the HR team already manages. That overlap is why payroll and tax planning belong in the same conversation.
Quarterly Deadlines That Drive Payroll Planning
Most small and medium employers report on a quarterly cycle. The Australian Taxation Office sets fixed dates for the business activity statement (BAS), and missing them carries interest charges. The published quarterly BAS due dates follow a clear pattern.
For the 2025-26 financial year, the quarterly BAS dates are:
- Quarter 1 (July to September): due 28 October.
- Quarter 2 (October to December): due 28 February.
- Quarter 3 (January to March): due 28 April.
- Quarter 4 (April to June): due 28 July.
Lodging electronically can extend the Quarter 1 date to 25 November. Quarterly PAYG instalments share the same four dates: 28 October, 28 February, 28 April, and 28 July. Quarterly super guarantee contributions fall due on 28 October, 28 January, 28 April, and 28 July.
These shared dates make planning simpler. A payroll team that locks in the 28th can cover BAS, PAYG, and most super in one review. Larger employers may report monthly instead of quarterly. Those teams work to the 21st of each month rather than the 28th.
Super, Single Touch Payroll, and the Bigger Picture
Superannuation is where HR carries real risk. Contributions must reach the employee fund by the quarterly date, not just leave the company account. A late payment can trigger the super guarantee charge, which is not tax deductible.
A change is coming here. From 1 July 2026, new Payday Super rules require super to be paid close to each pay event rather than each quarter. Teams should map this shift now, since it reshapes the payroll cadence and affects every employee’s take-home pay and entitlements.
Other dates round out the year. Helpful references include:
- Monthly activity statements: due on the 21st of the following month.
- Self-lodged individual income tax returns: due 31 October.
- Small company tax returns: generally due 28 February.
The official list of important financial dates is a good cross-check when planning the year.
Building a Compliance Rhythm Your Team Can Trust
A reliable system beats a good memory. Most teams that stay current treat the tax calendar as a recurring project, not a series of fire drills. The habit is what keeps penalties away.
Start by mapping every date into a shared calendar with reminders set 2 weeks ahead. Assign one owner per obligation so nothing falls through a gap. Review the schedule each quarter, since rules and thresholds do change.
A simple compliance routine often looks like this:
- Confirm pay runs and Single Touch Payroll reports each cycle.
- Reconcile super and PAYG totals before each quarterly date.
- Brief leaders on upcoming payments 30 days out.
That small structure protects both the company and the people who depend on it. It also frees the HR team to focus on staff, not chasing forms. A steady rhythm is the real goal here.
Frequently Asked Questions
What Are the Quarterly BAS Due Dates for 2025-26?
For the 2025-26 financial year, the quarterly BAS is due on 28 October, 28 February, 28 April, and 28 July. Quarter 2 carries a longer window because it spans the holiday period. Lodging electronically can push the Quarter 1 date to 25 November. Always confirm your exact dates on the ATO website, since concessions can vary by agent and entity type.
When Is Super Guarantee Due Each Quarter?
Quarterly super guarantee contributions are due on 28 October, 28 January, 28 April, and 28 July. The money must reach the employee fund by that date, not simply leave your account. Late payment can trigger the super guarantee charge. From 1 July 2026, Payday Super rules will require super to be paid close to each pay event instead.
How Long Must HR Keep Payroll Records?
Australian rules require employers to keep time and wage records for 7 years. Records must be legible, accurate, and accessible to a Fair Work Inspector. Pay slips must be issued within 1 working day of pay day. Good record-keeping also makes BAS and super reconciliation far quicker each quarter.
What Happens If We Miss an ATO Deadline?
A missed BAS or payment can attract a failure to lodge penalty plus interest. The amount depends on entity size and how late the lodgment is. The ATO may waive penalties in genuine hardship cases, but relief is not automatic. Setting reminders 2 weeks ahead is the simplest way to stay clear of charges.
Guest writer
