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Lodging Your Tax Return

Every business must lodge a tax return—regardless of whether there is a liability or not. The deadlines depend on your business structure:

Business TypeDue Date (if lodging yourself)Exception via Registered Agent*
Sole Trader
Business income is included with your individual tax return
31 OctoberMay differ if lodging via registered tax agent
Partnership
Your share of partnership income; the partnership itself also lodges a return
31 OctoberMay differ if lodging via registered tax agent
Trust
Distributions you receive (in your individual return); the trust also lodges a trust return
31 OctoberMay differ if lodging via registered tax agent
Company
Salaries, wages, dividends etc. reported in individual returns; the company must lodge separately
Individual: 31 October
Company: Usually by 28 February
If handled through registered tax agent, alternate dates may apply

* If lodging via a registered tax agent, you may receive extended deadlines depending on agent’s lodgement program.

Why Choose GS Biz Accounting Services

If your business is required to make super (or equivalent retirement fund) contributions on behalf of employees, those must be paid by specific due dates:
QuarterPeriodDue Date for Contribution
Quarter 11 July – 30 September28 October
Quarter 21 October – 31 December28 January
Quarter 31 January – 31 March28 April
Quarter 41 April – 30 June28 July

Quarterly IAS / BAS / Instalment & Reporting Dates (for year 2025/26)

Below is a sample schedule of key due dates for Instalment Activity Statements (IAS), Business Activity Statements (BAS), and related reporting events in the 2025/26 year:
Month / EventDescriptionDue Date
1 JulyYear-end finalisation / STP event14 July 2025
July (IAS)Monthly IAS for July21 August 2025
August (IAS)Monthly IAS for August21 September 2025
SeptQuarterly BAS for July–September25 November 2025
OctoberMonthly IAS for October21 November 2025
NovemberMonthly IAS for November21 December 2025
DecQuarterly BAS for October–December28 February 2026
JanuaryMonthly IAS for January21 February 2026
FebruaryMonthly IAS for February21 March 2026
MarchQuarterly BAS for January–March26 May 2026
AprilMonthly IAS for April21 May 2026
MayMonthly IAS for May21 June 2026
JuneQuarterly BAS for April–June25 August 2026

(Note: This is a representative schedule. Always confirm actual due dates via tax authority notices.)

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GSBIZ — Tax Thresholds & Rates (Illustrative / Example Figures)

Below is an illustrative example of how tax rates and contribution caps might be presented. Please replace these figures with those applicable in your jurisdiction.

Taxable IncomeTax on Income
$0 – $18,200Nil
$18,201 – $45,00016c for each $1 over $18,200
$45,001 – $135,000$4,288 + 30c for each $1 over $45,000
$135,001 – $190,000$31,288 + 37c for each $1 over $135,000
Above $190,000$51,638 + 45c for each $1 over $190,000

Compulsory superannuation / retirement contribution rate: 12%

Non-Resident Individual Tax Rates (2025–26)

Taxable IncomeTax on Income
$0 – $135,00030c for each $1
$135,001 – $190,000$40,500 + 37c for each $1 over $135,000
Above $190,000$60,850 + 45c for each $1 over $190,000

Compulsory superannuation / retirement contribution rate: 12%

Contribution Caps (Concessional & Non-Concessional)

YearConcessional Contribution CapNon-Concessional Contribution Cap
2025–26$30,000$120,000
2024–25$30,000$120,000
2023–24$27,500$110,000
2022–23$27,500$110,000

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