Calculates American sales taxes, state and district. Java Applet that can also be run as an application. Requires Java version 1.5 or later. Java source code and sample HTML included. This version computes by adding sales tax to a base price. It also works in reverse given the total paid working backwards to get the tax and original price. In other words it will tell you the sticker price to make something come out even after taxes are added. It also has a spinner that lets get that result without typing. Just select the buyer's state and district, enter the amount of the sale and hit calc. You can adjust the sale amount with a spinner. If you are a business, you don't have to collect sales taxes from people in other states unless you have a business presence in that state. In that case, you must collect just the state tax, not the local tax. The program splits out the state and local taxes so that if you have a business presence in his state, you can tell him the amount he must remit to you (the state part) and the part he must remit voluntarily and directly (the local district part). It now handles sales taxes for all American states, counties and ciities.