To protect your business from an audit, consider asking for a written ruling, as opposed to a verbal ruling when questioning your state's Department of Revenue.
According to an article, "A formal request for tax guidance is generally referred to as a ruling request or private ruling letter. For sales and use tax purposes, a ruling request will generally relate to the taxability of a product, individual or pending business purchase and the circumstances that surround the transaction."
Sales tax rates by jurisdiction are changing constantly and continue to grow in complexity. Our end-to-end service model is unique in our industry because it was built with the end result of compliance in mind. This ensures that the returns and compliance data you submit to the agencies is right the first time—every time.