Carbon Group

Get Ahead of Your Financial Deadlines: What to Know for the 2026–27 Financial Year

The 2026–27 financial year is here, and with it comes a new set of lodgements, deadlines and obligations to keep on top of. This year there are a few big changes, Payday Super is now in effect, the ATO’s Small Business Superannuation Clearing House has closed, and updated STP reporting requirements apply from 1 July.

Whether you’re running a business, managing payroll or lodging your own tax return, knowing what’s due and when will save you from unnecessary penalties and stress.

We’ve put together a month-by-month guide to the key dates for FY 2026–27 so you can plan ahead and stay on track.

What’s changed from 1 July 2026

Payday Super: Super guarantee contributions must now be paid on or before each payday, not quarterly. Contributions need to reach your employee’s super fund within 7 business days of payday. Missing this will trigger the Super Guarantee Charge.

The Small Business Superannuation Clearing House (SBSCH) is closed. If you were using the ATO’s free clearing house, you’ll need to switch to a SuperStream-compliant alternative through your payroll software or super fund.

STP reporting: Employers must now report Ordinary Time Earnings (OTE) and total super liability through Single Touch Payroll. Make sure your payroll software is updated before your first pay run.

PAYG withholding tables: The tax rate for income between $18,201 and $45,000 has dropped from 16% to 15%. Updated withholding tables should be applied in your payroll software from your first July payroll.

  • 1 July: Individual tax returns open for those self-preparing (due by 31 October 2026).
  • 1 July: Payday Super begins. Super must be paid on or before each payday and received by the employee’s fund within 7 business days.
  • 1 July: SBSCH closes. Make sure you’ve transitioned to an alternative clearing house.
  • 7 July: Monthly payroll tax returns due (all states).
  • 14 July: STP finalisation due for all employees for FY 2025–26.
  • 14 July: PAYG payment summaries due to employees (if not using STP).
  • 14 July: Employee share scheme statements due to employees.
  • 21 July: Monthly BAS for June 2026 due (if you lodge monthly).
  • 21 July: Annual payroll reconciliations must be finalised and any outstanding tax paid.
  • 28 July: Q4 BAS (April–June 2026) due (if you lodge quarterly).
  • 28 July: Super guarantee contributions for Q4 (April–June 2026) due (the final quarterly super payment under the old system.)
  • 7 August: Monthly payroll tax returns due (all states).
  • 14 August: PAYG withholding payment summary annual report due.
  • 14 August: Employee share scheme lodgement due to the ATO.
  • 21 August: Monthly BAS for July 2026 due (if you lodge monthly).
  • 28 August: Taxable Payments Annual Report (TPAR) due for FY 2025–26. Applies to businesses in building and construction, cleaning, courier, road freight, IT and security that pay contractors.
  • 7 September: Monthly payroll tax returns due (all states).
  • 21 September: Monthly BAS for August 2026 due (if you lodge monthly).
  • 30 September: STP finalisation deadline for closely held payees, including directors and family members.
  • 7 October: Monthly payroll tax returns due (all states).
  • 21 October: Monthly BAS for September 2026 due (if you lodge monthly).
  • 28 October: Q1 BAS (July–September 2026) due (if you lodge quarterly).
  • 2 November: Last day to lodge your individual tax return for FY 2025–26 if self-lodging (31 October falls on a Saturday, due date moves to Monday 2 November).
  • 9 November: Monthly payroll tax returns due (all states) (7 November falls on a Saturday, due date moves to Monday 9 November).
  • 23 November: Monthly BAS for October 2026 due (if you lodge monthly)
  • 1 December: Income tax payment due for large and medium companies and super funds whose tax return lodgement is due 1 February 2027.
  • 7 December: Monthly payroll tax returns due (all states).
  • 21 December: Monthly BAS for November 2026 due (if you lodge monthly).
  • 7 January: Monthly payroll tax returns due (all states).
  • 21 January: Monthly BAS for December 2026 due (if you lodge monthly).
  • 28 January: Super guarantee contributions for Q2 (October–December 2026) due.
  • 1 February: Tax return lodgement due for large and medium taxpayers (companies, super funds and trusts with total income over $10 million) whose prior year return was taxable (31 January falls on a Sunday, due date moves to Monday 1 February).
  • 8 February: Monthly payroll tax returns due (all states)
  • 22 February: Monthly BAS for January 2027 due (if you lodge monthly)
  • 1 March: Q2 BAS (October–December 2026) due (if you lodge quarterly) (28 February falls on a Sunday, due date moves to Monday 1 March). Note: no tax agent extension applies to Q2.
  • 1 March: Tax return lodgement due for large and medium taxpayers whose prior year return was non-taxable, and new registrant large and medium taxpayers (28 February falls on a Sunday, due date moves to Monday 1 March).
  • 8 March: Monthly payroll tax returns due (all states) (7 March falls on a Sunday, due date moves to Monday 8 March).
  • 22 March: Monthly BAS for February 2027 due (if you lodge monthly) (21 March falls on a Sunday, due date moves to Monday 22 March).
  • 31 March: End of the FBT year. If you provided fringe benefits between 1 April 2026 and 31 March 2027, start getting your FBT obligations in order.
  • 31 March: Tax returns due for individuals and trusts whose latest return resulted in a tax liability of $20,000 or more (excluding large and medium trusts).
  • 31 March: Tax returns due for entities with total income in the 2025–26 year of more than $2 million.
  • 7 April: Monthly payroll tax returns due (all states).
  • 21 April: Monthly BAS for March 2027 due (if you lodge monthly).
  • 28 April: Q3 BAS (January–March 2027) due (if you lodge quarterly).
  • 28 April: Super guarantee contributions for Q3 (January–March 2027) due.
  • 30 April: R&D Tax Incentive claims due for FY 2025–26.
  • 7 May: Monthly payroll tax returns due (all states).
  • 17 May: Company income tax returns due for lodgement and payment. Check with your accountant as earlier lodgement dates can apply.
  • 17 May: Partnership and trust income tax returns due for lodgement.
  • 17 May: Individual tax returns due if using a tax agent.
  • 21 May: Monthly BAS for April 2027 due (if you lodge monthly).
  • 21 May: FBT return due if lodging by paper.
  • 28 May: FBT return due if lodging electronically.

Note: The FBT tax year runs from 1 April to 31 March.

  • 7 June: Monthly payroll tax returns due (all states).
  • 21 June: Monthly BAS for May 2027 due (if you lodge monthly).
  • 21 June: Recommended cut-off for processing super contributions if you want them to clear by 30 June, allow at least 3–7 business days for processing.
  • 25 June: FBT return due (if lodging electronically through a tax agent).
  • 30 June: Trust distribution resolutions due.
  • 30 June: Wrap up your books for the 2026–27 financial year.

Looking for support with your tax and compliance deadlines?

Keeping up with your obligations throughout the year does more than just keep the ATO happy. It protects your cash flow, helps you avoid costly penalties, and gives your business a solid foundation to grow from. At Carbon, our team is here to make compliance straightforward, with practical support across tax, bookkeeping, payroll, superannuation and more.

Ready to get on top of your FY 2026–27 obligations? Reach out to your local Carbon office or book a time with one of our team members today.

Previous Calendars:

2025-26 Financial Year Calendar – Important Tax Dates in Australia
2024-25 Financial Year Calendar – Important Tax Dates in Australia
2023-24 Financial Year Calendar – Upcoming Accounting & Bookkeeping Deadlines in Australia

2022-23 Carbon’s Financial Year Calendar – Upcoming Deadlines

We have teams located all over Australia and can help you from your nearest Carbon office or virtually.

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