Tax Diary
Tax Diary
Never miss a tax deadline with our comprehensive calendar of key dates
Important note
These calculators, provided by MoneySmart, offer general financial information only. Contact us if you’d like to discuss your personal circumstances.
march 2026
21
mar
Monthly BAS Due
Lodge and pay February 2026 monthly business activity statement.
31
mar
Tax Returns Due – Companies, Super Funds & Trusts
Lodge tax return for companies and super funds with total income of more than $2 million in the latest year lodged (excluding large and medium taxpayers), unless the return was due earlier. Payment for companies and super funds in this category is also due by this date.
Lodge tax return for the head company of a consolidated group (excluding large and medium), with a member who had a total income in excess of $2 million in their latest year lodged, unless the return was due earlier. Payment for companies in this category is also due by this date.
Lodge tax return for individuals and trusts whose latest return resulted in a tax liability of $20,000 or more, excluding large and medium trusts. Payment for individuals and trusts in this category is due as advised on their notice of assessment.
april 2026
21
apr
PAYG Instalments & BAS
Lodge and pay quarter 3, 2025–26 PAYG instalment activity statement for head companies of consolidated groups.
Lodge and pay March 2026 monthly business activity statement.
28
apr
Critical
Super Guarantee Contributions
Lodge and pay quarter 3, 2025–26 activity statement if lodging by paper.
Pay quarter 3, 2025–26 instalment notice (form R, S, or T). Lodge the notice only if you vary the instalment amount. Make super guarantee contributions for quarter 3, 2025–26 to funds by this date.
Note: Employers who do not pay minimum super contributions for quarter 3 by this date must pay the super guarantee charge and lodge a Superannuation guarantee charge statement by 28 May 2026..
30
apr
Agent deadline
TFN & Lost Members Reports Due
Lodge TFN report for closely held trusts if any beneficiary quoted their TFN to a trustee in quarter 3, 2025–26
Lodge lost members report for the period 1 July 2024 to 31 December 2025.
may 2026
15
may
Final Tax Return Lodgment Deadline
Lodge 2025 tax returns for all entities that did not have to lodge earlier (including all remaining consolidated groups) and are not eligible for the 5 June concession.
Due date for companies and super funds to pay if required.
Note: Individuals and trusts in this category pay as advised on their notice of assessment.
21
may
Monthly BAS & FBT Lodgment Due
Lodge and pay April 2026 monthly business activity statement.
Final date to add new FBT clients to your client list to ensure they receive the lodgment and payment concessions for their fringe benefits tax returns.
Lodge and pay Fringe benefits tax annual return if lodging by paper.
26
may
Electronic BAS Lodgment Due
Lodge and pay eligible quarter 3, 2025–26 activity statements if you lodge electronically.
28
may
Super Guarantee Charge Due
Lodge and pay quarter 3, 2025–26 Superannuation guarantee charge statement if the employer did not pay enough contributions on time.
Note: Employers who lodge a Superannuation guarantee charge statement can choose to offset contributions they paid late to a fund against their super guarantee charge for the quarter. They still have to pay the remaining super guarantee charge.
June 2026
05
jun
TAX PAYMENT
Concessional Tax Return Deadline
Lodge tax returns due for individuals and trusts with a lodgment due date of 15 May 2026 provided they also pay any liability due by this date.
Lodge tax return for companies and super funds with a lodgment due date of 15 May 2026 provided both the prior year and current year return will be non-taxable or result in a refund.
Note:
This is not a lodgment due date but a concessional arrangement where failure to lodge on time (FTL) penalties will not apply if you lodge and pay by this date.
Large and medium taxpayers and head companies of consolidated groups are excluded from this concession.
21
jun
Monthly BAS Due
Lodge and pay May 2026 monthly business activity statement.
25
jun
FBT Return (Electronic) Due
Lodge and pay 2026 Fringe benefits tax annual return for tax agents if lodging electronically.
30
jun
EOFY Super & Tax Obligations
Super guarantee contributions must be paid by this date to qualify for a tax deduction in the 2025–26 financial year.
If any of your clients receive Child Care Subsidy and Family Tax Benefit payments from Services Australia, the client and their partner must lodge their 2024–25 tax return by 30 June 2026, regardless of any deferrals in place. For more information, see the Services AustraliaExternal Link website.
July 2026
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