Run&Gun
Veteran
The taxes in Europe seem a little more streamlined, over here every state charges something different, most every county adds on to that in different amounts, then some cities add on to that... It's possible that a lot of online businesses will stop selling to some places, or will shut down due to the extra labor overhead. If it was a universal amount, reported and paid to a single clearinghouse, I would say that this won't be a problem. But that's not how it is going to work.
I wish I was smart enough to be able to implement it, but I see an opening for start-up companies to be the "clearing houses" and take care of this for companies. Company X creates software to integrate in with the on-line merchants sales system to properly bill the correct local and state sales taxes, on-line merchant sends money to Company X every month based on the amount of sales tax collected and Company X properly distributes/pays the correct state and local governments. And they do it for a flat fee or probably a percentage. No real labor overhead/increase for the merchant because it's all automated, but there would be added expenses paying a company to handle it for them Or Company X could just be the outright billing service for some on-line merchants and it all goes through them and then they pay the merchants.