It is too easy to mess up calculations by having the sales tax be another adjustment. Front office is fast moving - this can quickly become a mess.
Is there a way to have the sales tax be an option in the procedure code setup so when that procedure is walked out, the sales tax is automatically calculated?
Furthermore, when you need to turn in your annual reports to your state, there should be a way to quickly print a report that shows the amount of Sales Tax collected with the corresponding procedure/products.