The self-lodgement tax deadline falls on 31 October every year, closing the four-month window that opened on 1 July. 27 October 2029 falls inside October, the final month of that window, in the fourth calendar quarter of 2029, with the deadline drawing closer as the month progresses.
Sport fixtures, markets and family events across Australia are concentrated on Saturdays more than any other day of the week. 27 October 2029 falls on Saturday, outside the standard working-day count used on this page, between the working week that ends on Friday and the one that begins the following Monday.
Contracts and legal deadlines that specify calendar days count every day from 27 October 2029 including weekends and public holidays, while deadlines specified in working or business days count only the days this page includes in its working-day total. The difference between the two conventions can shift a deadline by several days once weekends and holidays are counted.