TaxCloud knows where you must collect sales tax based on how you've configured your account. There are two ways to tell TaxCloud where to calculate and/or collect sales tax:
1.) Add a business address (or addresses) on the "Locations" page - i.e. if you have physical nexus in a state, and;
2.) Go to the "Tax States" page and select a state for sales tax collection by highlighting it on the map (or picking it from a list) - i.e. if you have economic nexus in a state.