By services, 30 October, 2018 1 August 2018 External T.I. 2018-0768241E5 - CCA for Equipment Used to Produce Biofuels
By services, 27 February, 2018 7 February 2018 External T.I. 2016-0637221E5 - Rollover of Mineral Rights
By services, 23 January, 2018 27 November 2017 External T.I. 2017-0726891E5 - Eligibility of Wind Turbines for ITC
By services, 9 January, 2018 31 August 2017 External T.I. 2017-0695101E5 - Test Wind Turbine Determination
By services, 18 July, 2017 16 June 2017 External T.I. 2016-0673551E5 - Certification of Mineral Resource
By services, 4 July, 2017 16 May 2017 External T.I. 2016-0670661E5 - Capital Cost of De-icing Equipment
