United States Maryland: New law requires marketplace facilitators to collect and remit taxes under post-Wayfair nexus standards as of 1 October 2019 10 June 201936 views1 min read Source: Deloitte E-Commerce / Electronic services Arizona: New post-Wayfair law requires some remote sellers and marketplace facilitators to start collecting TPT as of 1 October 2019 Sales Tax Requirements: One Year After Landmark Wayfair Decision