I believe that is how it already works. But if you contact someone from another state and send them money and they send you a product for that money, they have no relationship with your state’s government
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They DO have a relationship with my local government.
The package does not arrive by magic. It is, in many cases, delivered by the post office, delivery services etc all of whom have a direct relationship with the local government.
My city pays a ton of money so they can have three giant dumpsters available so everyone can fill them will all the cardboard boxes their stuff came in.
That is not relevant. The package carrier is who has a relationship with the local government. And by law they have no idea what is in the package.
The package carrier pays all taxes they are responsible to pay.
What business does your city have with competing with private industry to take care of trash?
That’s a job too important to be left to government.
Have the delivery service collect the tax within their fee rate, based on merchandise valuation from the pick-up location in combination with the tax rate of delivery address.