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Business Day Calculator

Australia Business Day Calculator

Calculate business days in Australia with national public holidays pre-configured. This calculator automatically excludes Australia Day, Good Friday, Easter Monday, ANZAC Day, Christmas Day, and other nationally recognised public holidays. Use it for Australian contract timelines, ATO deadlines, employment notice periods, and any business deadline governed by Australian working day conventions.

How Australian Business Days Are Defined

In Australia, business days are Monday through Friday, excluding national public holidays. The calculator covers national public holidays gazetted by the Australian federal government. Each state and territory also observes additional holidays, such as the Melbourne Cup Day in Victoria, Show Day in various states, and different dates for the King's Birthday holiday, which are not included here. For state-specific deadline calculations, verify the applicable state holiday schedule.

Australian National Public Holidays

National public holidays in Australia:

  • New Year's Day (January 1)
  • Australia Day (January 26)
  • Good Friday
  • Easter Saturday
  • Easter Sunday
  • Easter Monday
  • Anzac Day (April 25)
  • Christmas Day (December 25)
  • Boxing Day (December 26)

The King's Birthday holiday is observed nationally but on different dates by state; the calculator uses the most commonly observed date. How we determine holidays →

Common Use Cases in Australia

The Corporations Act 2001 and the ASIC Regulatory Guides frequently reference business days for disclosure, lodgment, and response deadlines. The Australian Consumer Law gives consumers specific business-day windows for repair, replacement, or refund disputes. Construction contracts under AS 4000 and AS 2124 define business days explicitly and those definitions should be checked against state-specific holidays.

For informational purposes only

This calculator provides general estimates based on business day counting rules. It does not constitute legal advice. Deadlines in legal, regulatory, or contractual matters may be subject to jurisdiction-specific rules, court orders, or statutory exceptions. Always verify critical deadlines with a qualified professional.

Frequently Asked Questions

What are Australian national public holidays?
Australian national public holidays include New Year's Day, Australia Day (Jan 26), Good Friday, Easter Saturday, Easter Monday, ANZAC Day (Apr 25), and Christmas Day. The King's/Queen's Birthday is observed nationally but on different dates by state.
Does Australia have different holidays by state?
Yes. States have additional public holidays; for example, Melbourne Cup Day in Victoria, Show Day in Queensland, and Picnic Day in the Northern Territory. The calculator uses national public holidays only.
When is ANZAC Day?
ANZAC Day is April 25 each year, commemorating the Australian and New Zealand Army Corps. It is one of Australia's most important national commemorations and is a public holiday nationwide.
How many business days are in an Australian working year?
Australia typically has around 253 business days per year when using national-only holidays. State-level holidays reduce this further depending on the jurisdiction.
What if Australia Day falls on a weekend?
When Australia Day (January 26) falls on a weekend, the public holiday is observed on the following Monday. The calculator handles this substitution automatically.

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