A shortcut to calculate sales tax for an amount based on US zip codes. The result shows the combined tax rate (state tax plus city tax). Version 4 now includes special rates imposed by some cities and allows the user to select whether to use current location or manually enter zip code.
Collects tax rates from here
Updates to current location selection.
Now includes special tax rates imposed by some cities.
Allows user to select current location or enter zip code. Changes to number formatting. Changes to results alert box.