Running a business is busy. Staying on top of tax and payroll deadlines doesn’t have to be hard.
We’ve pulled together the key ATO, BAS, super and payroll tax dates for July to December 2025 — all in one place. Use this guide to avoid penalties, plan your cash flow, and feel confident about your compliance.
Let’s take it month by month.
July 2025 – Start the New Financial Year Right
- 14 July – Finalise Single Touch Payroll (STP) for most employers
- 21 July – Lodge and pay your June BAS and PAYG instalments
- 28 July
- Super contributions for the June quarter must be received by the fund
- Lodge June quarter BAS (if not using a tax or BAS agent)
- Lodge your NSW annual payroll tax reconciliation
- 31 July – Lodge NSW Long Service Leave return (for building and construction businesses)
Tip: Finalising STP on time means your employees can access their income summaries without delay.
August 2025 – Reports and Super Catch-Ups
- 7 August – Lodge and pay July payroll tax
- 14 August
- Lodge PAYG withholding annual report (if not using an agent)
- Lodge Employee Share Scheme report
- 21 August – Lodge July BAS
- 28 August
- Lodge June quarter BAS (if using a tax/BAS agent)
- Lodge Taxable Payments Annual Report (TPAR)
- Lodge Super Guarantee Charge statement (if super wasn’t paid on time)
Not sure if TPAR applies to you? It’s common in construction, cleaning, courier and IT services. Ask us if you’re unsure.
September 2025 – Time to Review
- 7 September – Lodge and pay August payroll tax
- 21 September – Lodge August BAS
- 30 September
- Lodge PAYG summary annual report (if using an agent)
- Lodge TFN withholding report (for closely held trusts)
October 2025 – Quarterly Wrap-Up
- 7 October – Lodge and pay September payroll tax
- 21 October
- Lodge September BAS
- Lodge and pay September quarter PAYG instalments
- 28 October
- Lodge September quarter BAS (if not using an agent)
- Super contributions must be received by the fund
- Lodge TFN withholding annual report
- 31 October
- Last day to lodge overdue tax returns
- Lodge PAYG withholding report (for payments to foreign residents)
- Lodge TFN report for closely held trusts (if needed)
- Register with a tax agent to qualify for later lodgement of your 2025 tax return
Tip: October is one of the busiest months. Don’t leave lodgement to the last minute.
November 2025 – Catch Up and Stay Ahead
- 7 November – Lodge and pay October payroll tax
- 21 November – Lodge October BAS
- 25 November – Lodge September quarter BAS (if using a tax/BAS agent)
- 28 November – Lodge Super Guarantee Charge statement (if you missed Q1 super payments)
December 2025 – Wrap Up Before the Holidays
- 1 December – Income tax due for large or medium companies and super funds
- 8 December – Lodge and pay November payroll tax
- 21 December – Lodge November BAS
- 31 December – NSW land tax year ends
Tip: Lodge early so you can switch off over the break.
Helpful Tools
- 2025–26 Tax Calendar (coming soon) – An easy download with all the dates
- Need a hand with BAS, payroll or lodgements? Book a check-in with our team
- Want reminders like this sent monthly? Subscribe to our “Don’t Miss This” email series
We’re Here to Help
If you’re feeling behind or not sure which deadlines apply to your business, reach out. At The Quinn Group, we help business owners stay compliant, avoid penalties, and manage tax with confidence.
Book a free consult or call us today. We’ll take care of the details, so you can get back to business.
