I haggle a lot. Sometimes to make the sale I tell the customer that I will take care of the sales tax. I still need to report the sales tax, so how do I figure that out?
It was not easy to figure out. Tax Tables shift the "Distribution of Natural Numbers" so that tax cheaters can be detected (See Wikipedia - Benford's Law ).
Enter the Total Sale Amount of your sale. Press "calculate". Your results will display. A pop-up alert will let you know if you have hit a weird spot in the tax table. Try 13 and 12.94 as examples.