Couldn't Amazon basically offer them a TurboTax like service and basically generate all of the filled in filing forms the seller needs? Then it would be up to the seller to review with their accountant and actually submit.
>Then it would be up to the seller to review with their accountant and actually submit.
For even a small seller, you're maybe looking at thousands of dollars a year for that much paperwork. So you'd have to have hundreds of thousands a year in revenue for that to make sense.