The 2018 Parliament sitting calendar was agreed to by the House of Representatives on 26 October 2017 and by the Senate on 15 November 2017.
- 1 January – New Year's Day (Public Holiday)
- 2 to 25 January – Non sitting days
- 26 January – Australia Day holiday
- 27 January to 4 February – Non sitting days
Autumn session
- 5 to 8 February – Both Chambers sit
- 10 to 12 February – Non sitting days
- 12 to 15 February – Both Chambers sit, Senate 2/3 Cut Off on Tuesday, 13 February
- 17 to 25 February – Non sitting days
- 27 February to 1 March – House of Representatives sits, Senate Additional Estimates
- 2 March – Senate Additional Estimates
- 3 to 11 March – Non sitting days
- 12 March– Canberra Day (Public Holiday)
- 13 to 18 March – Non sitting days
- 19 to 22 March – Senate sits
- 23 to 25 March – Non sitting days
- 26 to 28 March – Both Chambers sit, Senate 2/3 Cut Off on Monday, 26 March
- 29 March – Non sitting day
- 30 March – Good Friday (Public Holiday)
- 2 April – Easter Monday (Public Holiday)
- 3 April to 24 April – Non sitting days
- 25 April – Anzac Day holiday (Public Holiday)
- 26 April to 7 May – Non sitting days
Winter (Budget) session
- 8 May – Budget, Both Chambers sit
- 9 to 10 May – Both Chambers sit, Senate 2/3 Cut Off Wednesday, 9 May
- 11 to 20 May – Non sitting days
- 21 to 24 May – House of Representatives sits, Senate Budget Estimates
- 25 May – Senate Budget Estimates
- 26 to 27 May – Non sitting days
- 28 May - Reconciliation Day (Public Holiday)
- 29 to 31 May – House of Representatives sits, Senate Budget Estimates
- 1 June – Senate Budget Estimates
- 2 to 10 June –Non sitting days
- 11 June – Queen's birthday (Public Holiday)
- 12 to 17 June –Non sitting days
- 18 to 21 June – Both Chambers sit
- 22 to 24 June – Non sitting days
- 25 to 28 June – Both Chambers sit, Senate 2/3 Cut Off Tuesday, 26 June
- 29 June to 12 August – Non sitting days, winter break
Spring session
- 13 to 16 August – Both Chambers sit
- 17 to 19 August – Non sitting days
- 20 to 23 August – Both Chambers sit
- 24 August to 9 September – Non sitting days
- 10 to 13 September – Both Chambers sit, Senate 2/3 Cut Off Wednesday, 6 September
- 14 to 16 September – Non sitting days
- 17 to 20 September – Both Chambers sit
- 21 to 30 September – Non sitting days
- 1 October – Labour Day (Public Holiday)
- 2 to 14 October – Non sitting days
- 15 to 18 October – Both Chambers sit, Senate 2/3 Cut Off Wednesday, 17 October
- 19 to 21 October – Non sitting days
- 22 to 25 October – House of Representatives sits, Senate Supplementary Budget Estimates
- 26 October – Senate Supplementary Budget Estimates
- 27 October to 11 November – Non sitting days
- 12 to 15 November – Senate sits
- 16 to 25 November – Non sitting days
- 26 to 29 November – Both Chambers sit, Senate 2/3 Cut Off Thursday, 29 November
- 30 November to 2 December – Non sitting days
- 3 to 6 December – Both Chambers sit
- 7 to 24 December – Non sitting days
- 25 December – Christmas Day
- 26 December – Boxing Day holiday
- 27 to 31 December – Non sitting days