We should also start requiring businesses to list the after tax price too.
The U.S. has tens of thousands of tax districts. Showing the price exclusive of taxes keeps taxes transparent and allows consumers to make direct comparisons between the prices of products across different regions.
This would be for in person sales. Obviously wouldn’t work online.
It even breaks down at a local level. It would be hard to make a direct price comparison between doing your grocery shopping in one county vs another if they applied different local taxes, for example.Most states don't tax groceries though, so that part doesn't even apply to most of the country. Your state apparently is among those that tax groceries and at the highest rate in the country (7%).
Online comparison seems even easier. Businesses need to know sales tax rates in order to collect the appropriate amount. There's no reason why they can't have a way to input your ZIP code to show the final price with sales tax. When you buy something subject to sales tax, you input your address anyway to see the final price, but that's at checkout and not itemized.