We have option to collect tax within state of US.
http://demo.machsol.com/Admin/System/AddTaxZone.aspxIf you select United States in country list you will see an option to select
State. If you do not select any state tax will be collected for all US clients. If you select state also and specify tax amount then tax will be collected on that rate from that state and for the rest of US states, if a tax rate is specified for US that rate will be charged.
The second question you asked "Additionally, tax is not charged on Domain registrations, even in my home state." is not handled but we can handle this also if more clients request this.
M. Usman
Senior Software Engineer
Machine Solutions, LLC