Primitive marijuana taxes start out “ad valorem,” that is, as a percentage of price. Many of my friends who are non-tax drug policy people gravitate toward these price-based taxes, because prices tend to increase with potency, and roughly with intoxication. I agree: Price-based taxes are a good first step in what the RAND report for Vermont calls the “tax-base march of progress.”
But price-based taxes are easy to manipulate. For instance, North Carolina’s new 7.5 percent sales tax on tickets (“admission charges”) is getting eroded by an affiliate of the state, the UNC-Chapel Hill repertory theater. For tickets, or medical devices, there is no analog to the useful weight base for marijuana taxes. But a ticket tax illustrates the flimsiness of taxes based on price, as explained below. Continue reading “Ad valorem taxes are flimsy — not just for marijuana”