How is the rate calculated? Natasha Updated August 03, 2023 14:15 Follow Our system looks at your customer address and charges the appropriate tax based on the province. Related articles What is ATD’s attendance policy, and what should I do if I need to miss time from my program? Can I bring a guest to any of the events? Are there special national ATD membership rates for chapter leaders? Where can I find the learning objectives and syllabus? What are the program completion requirements?