Improving state tax lawsby clarifying and simplifying nexus provisions, by decreasing compliance and administrative burdens for taxpayers and the department of revenue, by facilitating the collection of new tax revenue resulting from the United States supreme court's decision in South Dakota v. Wayfair, Inc., by providing more consistent tax obligations for both domestic and foreign sellers, and by simplifying the expiration of sales tax sourcing mitigation payments to local governments on September 30, 2019.   Official Text and Analysis.