Scale your store across state lines with fewer sales tax surprises. The Sales Tax Readiness Report is a free app that maps your sales data against state tax rules, showing where you have established nexus. Powered by Avalara, an industry leader supporting thousands of Shopify merchants, it turns complex compliance data into simple insights. When you are ready for real-time tax calculations at checkout and more, choose Avalara directly from within the Tax Platform settings in your Shopify Admin.