25 Section 310: GENERAL SOURCING RULES
A. Except as provided in Section 310.1, the retail sale, excluding lease or rental, of a
product shall be sourced as follows:
1.When the product is received by the purchaser at a business location of the seller,
the sale is sourced to that business location.
2.When the product is not received by the purchaser at a business location of the
seller, the sale is sourced to the location where receipt by the purchaser (or the
purchaser's donee, designated as such by the purchaser) occurs, including the
location indicated by instructions for delivery to the purchaser (or donee), known
to the seller.
3.When subsections (A)(1) and (A)(2) do not apply, the sale is sourced to the
location indicated by an address for the purchaser that is available from the
business records of the seller that are maintained in the ordinary course of the
seller's business when use of this address does not constitute bad faith.
4.When subsections (A)(1), (A)(2), and (A)(3) do not apply, the sale is sourced to
the location indicated by an address for the purchaser obtained during the
consummation of the sale, including the address of a purchaser's payment
instrument, if no other address is available, when use of this address does not
constitute bad faith.
5.When none of the previous rules of subsections (A)(1), (A)(2), (A)(3), or (A)(4)
apply, including the circumstance in which the seller is without sufficient
information to apply the previous rules, then the location will be determined by the
address from which tangible personal property was shipped, from which the digital
good or the computer software delivered electronically was first available for
transmission by the seller, or from which the service was provided (disregarding
for these purposes any location that merely provided the digital transfer of the
product sold)