This course provides essential knowledge for Client Advisory Services (CAS) professionals navigating multistate taxation and managing tax deadlines. We’ll start by exploring the implications of the Wayfair decision, focusing on general rules for sales and income tax nexus across states. You’ll learn what to look for in state statutes and gain a solid foundation for filing requirements. Additionally, we’ll cover key tax due dates, how to handle missed deadlines, and potential relief options. Whether you’re new to the field or running your own practice, this course will equip you with the tools to succeed.