(1) This section and sections 1 and 3 commence on the day on which this Act receives the Royal Assent. (2) Schedule 1 (other than item 15) commences on 20 September 2001. (3) Item 15 of Schedule 1 is taken to have commenced on 1 July 2000. (4) Schedule 2 (other than items 1 and 24) commences on 20 September 2001. (5) Item 1 of Schedule 2 is taken to have commenced on 3 May 2000, immediately after the A New Tax System (Family Assistance and Related Measures) Act 2000 received the Royal Assent. (6) Item 24 of Schedule 2 is taken to have commenced on 1 July 1998, immediately after the commencement of item 10 of Schedule 5 to the Youth Allowance Consolidation Act 2000 .