And stores pay sales tax.
> By law, some payroll taxes are the responsibility of the employee and others fall on the employer, but almost all economists agree that the true economic incidence of a payroll tax is unaffected by this distinction, and falls largely or entirely on workers in the form of lower wages.
Who is charged the tax and who pays it are different things.
In some states, the stores are the ones that owe the "sales" tax (which in these states are actually excise taxes that the business can pass through to the customer).
The "tax" the customer pays in those states is the "pass thru" charge. To make things fun, Hawaii imposes the excise tax (on the business) recursively on any tax charges passed thru to the customer.