"We are located in Oregon, so we do not have sales taxes. If a customer from out of state chooses in store pickup, the system currently charges them sales tax based upon the state they are located in and we have to remove the sales tax charge manually." << Copied from another user, but this is the same issue we deal with.

Is it possible to add a Ship Option where "Will Call" will default business address into shipping fields or if multiple locations give a select option.  Taxes would then be accessed appropriately.  It would be good to have a warning... "Please confirm you would like to update shipping address to: [warehouse address] which can impact sales tax?"   Any iterations of above would be good.  We just need to be able to re-asses sales tax based on where the customer is picking up the item.