>> Nexus is a legal term that means that a seller by virtue of their business activities has a "connection" with a state and/or local taxing jurisdiction as to be required to collect tax. In order for a seller to have nexus, they must have a "substantial physical presence" in a taxing jurisdiction which would include such things as an office, warehouse, property, salesmen or other company representatives.

>> If a seller is doing business in multiple states, and they have nexus in those states, they have a legal obligation to register with those states (and in some cases localities) and remit the appropriate sales or use tax due as determined under state and/or local law.  AvaTax nexus configuration will ensure that your company is in full compliance with all state and local taxing jurisdictions where nexus exist.

>> AvaTax has an easy-to-use nexus management facility.  It makes it simple for the user to define which states they have nexus in.