Rhode Island General Laws Title 44. Taxation § 44-18.1-29. Taxability matrix

(A) To ensure uniform application of terms defined in the Library of Definitions each member state shall complete a taxability matrix adopted by the governing board. The member state's entries in the matrix shall be provided and maintained in a database that is in a downloadable format approved by the governing board. A member state shall provide notice of changes in the taxability of the products or services listed in the taxability matrix as required by the governing board.

(B) A member state shall relieve sellers and CSPs from liability to the member state and its local jurisdictions for having charged and collected the incorrect amount of sales or use tax resulting from the seller or CSP relying on erroneous data provided by the member state in the taxability matrix.