Looking at the legislation [0] you have 1 month 11 days after...

Looking at the legislation [0] you have 1 month 11 days after yesterday to apply if you want to use it for this year. It might be worth letting any company you are involved in about this.

66 Transitional provisions relating to the 2017-18 income 15 year 16 (1) Despite subsection 418-100(2) of the Income Tax Assessment Act 1997, 17 as inserted by item 2 of this Schedule, an application to the 18 Commissioner for a determination allocating exploration credits to an 19 entity for the 2017-18 income year must be made during the period of 20 one month starting on the later of: 21 (a) the eleventh business day after the day on which this Act 22 receives the Royal Assent; and 23 (b) the day on which this item commences

0. http://parlinfo.aph.gov.au/parlInfo/download/legislation/bills/r5996_aspassed/toc_pdf/17238b01.pdf