The Excise Tax Act has a couple of âclosely relatedâ provisions, which ameliorate the effects of the GST/HST, namely those found in sections 150 and 156 of the ETA. Amendments to the ground rules for how these provisions operate were announced in the 2016 federal budget, and more recently came into force on March 22, 2017. These amendments add a new âqualifying voting controlâ test for both elections.