How do I set up custom tax tables for U.S. states or another country's providence (e.g. Canada)?

When either the Use Custom State List radio-button and/or the Choose One Another Country drop-down list is enabled, you will need to specify the state or providence drop-down list values respectively:

1. Go to Settings > Tax Rates.
   
   
2. Select Calculate State/Province Tax in Realtime radio-button, and click Edit Values.
   
   
3. Locate the desired section (Custom State List or Choose One Another Country).
   
   
4. Enter the appropriate State Name or Providence Name text box.
   (If entering a State, use abbreviations, e.g. NY, CA.)
   
    
   
   
5. If you wish to set tax fo a different country. Select the Country First (e.g. Canada). Section Add New Custom Tax enter the abbreviation for the State (e.g. ON). 
    
   
   
6. Enter the appropriate percentage in the Tax field.
   Note: A tax rate can contain up to 2 decimal places, e.g. 5.13.
   
   
7. Enter a Shipping Tax percentage, if required.
   Note: Default value un-checked (tax is applied to the order before shipping cost is added). Please consult your tax accountant before enabling this option.
   
   
8. Click Add New.