Business Days in December 2027 for Australia
December 2027 has 21 business days under the Australian national holiday calendar. December 2027 contains 2 Australian national holidays on weekdays. The month covers 31 calendar days, of which 8 are Saturday and Sunday. That count drives invoice cycles, payroll runs, and any contract that defines deadlines as a number of business days in Australia.
business days
21
Calendar Days
31
Weekend Days
8
public holidays
2
Work Weeks
4.2
| Mon | Tue | Wed | Thu | Fri | Sat | Sun |
|---|---|---|---|---|---|---|
1 | 2 | 3 | 4 wknd | 5 wknd | ||
6 | 7 | 8 | 9 | 10 | 11 wknd | 12 wknd |
13 | 14 | 15 | 16 | 17 | 18 wknd | 19 wknd |
20 | 21 | 22 | 23 | 24 Christmas Day (observed) | 25 wknd | 26 wknd |
27 Boxing Day (observed) | 28 | 29 | 30 | 31 |
public holidays in December 2027
Australia December deadlines
December 25 (Christmas Day) and December 26 (Boxing Day) close banks and the ASX. December 21 BAS for monthly remitters covers November activity. Quarterly PAYG and BAS for the September quarter were due late October; finance teams use December for accrual review ahead of the January return cycle.
Day-of-week distribution
The count of each weekday in December 2027. Useful for shift scheduling, weekly recurring billing, and any rota that depends on a specific weekday landing in-month.
| Day | Count |
|---|---|
| Monday | 4 |
| Tuesday | 4 |
| Wednesday | 5 |
| Thursday | 5 |
| Friday | 5 |
| Saturday | 4 |
| Sunday | 4 |
Australia reporting cycles and business-day rules
Australian business-day cycles run against ATO BAS reporting (monthly remitters by the 21st of the following month, quarterly by the 28th of the next month), ASIC corporate filings, and RBA RITS clearing. The Reserve Bank of Australia operates a two-tier real-time gross settlement window. AUSTRAC threshold transaction reporting follows a 10-business-day window under AML/CTF Act 2006. Single Touch Payroll Phase 2 reporting runs on each pay-event basis but year-end finalisation has a July 14 hard deadline. Public-holiday treatment under Fair Work Act 2009 follows the federal set this calculator uses.
December 2027 business days compared by country
Working-day counts vary across countries because each country observes its own public holidays. The table below puts Australia alongside the other ten supported holiday calendars for December 2027.
| Country | Business Days | Holidays this month |
|---|---|---|
| 🇺🇸United States | 21 | Christmas Day (observed), New Year's Day 2028 (observed) |
| 🇬🇧United Kingdom | 21 | Christmas Day (observed), Boxing Day (observed) |
| 🇨🇦Canada | 21 | Christmas Day (observed), Boxing Day (observed) |
| 🇦🇺Australia (this page) | 21 | Christmas Day (observed), Boxing Day (observed) |
| 🇮🇳India | 23 | None |
| 🇵🇭Philippines | 20 | Feast of the Immaculate Conception, Rizal Day, New Year's Eve |
| 🇫🇷France | 23 | None |
| 🇩🇪Germany | 23 | None |
| 🇯🇵Japan | 23 | None |
| 🇲🇽Mexico | 23 | None |
| 🇸🇬Singapore | 23 | None |
How December 2027 compares year over year
December 2026 also had 21 business days, so working capacity is unchanged year over year. On the surrounding months, November 2027 has 22 business days and January 2028 has 19. Looking forward, December 2028 has 19 business days under the same Australian national holiday calendar.
Using this calculator in Australia
A Sydney merchant bank uses the 21-day December 2027 count to align RBA RITS settlement with PEXA property-settlement windows and AusPay-linked PayTo cycles. A Perth mining services controller uses the count to track ATO BAS and PAYG instalment cycles that fall in the same month. A Brisbane construction subcontractor uses business-day math to track Security of Payment Act response windows under each state's regime.
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.