Since the landmark ruling in June 2018 by the U.S. Supreme Court in South Dakota v. Wayfair, Inc., sales and use taxes have become an increasingly important tax issue for all businesses. This ruling established an “economic presence” standard whereby a state may assess sales and use taxes on in-state sale transactions by an out-of-state business (or “remote seller”) once the business exceeds bright-line thresholds of business activity in the state. The economic presence thresholds in the case, which were adopted in large part by all 45 states which assess a sales tax, were $100,000 of sales or 200 transactions in a 12-month period. Once a business establishes either a physical presence or exceeds one of the new economic presence bright-line thresholds (often referred to as “establishing nexus”), the business becomes subject to sales tax in the state. As such, the business is required to register and file sales tax returns, collect and remit sales tax on taxable sales, and collect and maintain exemption certificates from customers to substantiate non-taxable sales.