I havent cked on this yet, but I can only see one solution for me, for all sales regardless of origin, they would pay 6% Ky sales tax just as if they made a F to F purchase. There would be no way for an internet seller to have knowledge of the sales tax rates for all states since some states have different rates for areas of that state.
If I'm forced to collect 6% Ky tax and the customer pays w/a card that costs me 3% of the total, I've been eating the 3% cost on his product/postage/optional insurance, but I cant absorb any more costs. Now if I raise the price of product to offset all the add ons, all I succeeded in doing is making a bigger figure to tax. This is going to be a real CF. LDS