I’m a Professional Wedding Planner from Nova Scotia. I usually charged my clients, inclusive of HST, as we only operate in Canada. As we charge for one wedding costs approximately $10,000, which is basic, excluding food, HST. I always calculate prices and the taxes of each wedding by using the incredible tool “Ontario tax calculator”. I trust the GST calculator as I’ve been using quite a long time, around 2 years now. 

https://hstcalculator.onl/