Tax Calculation {#salesforce-b2c-tax-calculation}
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To calculate local taxes once the customer enters their address at checkout, configure the Tax Calculation services.

1. Go to Merchant Tools \> Site Preferences \> Custom Preferences \> Cybersource_TaxConfiguration and set these options:

2. Enable the Enable Tax Calculation field.

3. Configure these tax settings:

   #### ADDITIONAL INFORMATION

   * List of Nexus States: List the states to calculate tax for.
   * List of Nexus States to Exclude: List the states to not calculate tax for.
   * Merchants VAT Registration Number: Enter your VAT registration number if you have one.
   * Default Product Tax Code: Enter the default tax code to use for products in the basket without a tax code.
   * Purchase Order Acceptance City
   * Purchase Order Acceptance State Code
   * Purchase Order Acceptance Zip Code
   * Purchase Order Acceptance Country Code
   * Purchase Order Origin City
   * Purchase Order Origin State Code
   * Purchase Order Origin Zip Code
   * Purchase Order Origin Country Code
   * Ship From City
   * Ship From State Code
   * Ship From Zip Code
   * Ship From Country Code

#### RESULT

If you enable Tax Calculation and do not specify any states in List of Nexus States or List of Nexus States to Exclude, Tax Calculation assumes every state or province is taxable. You can leave either the List of Nexus States or the List of Nexus States to Exclude as empty, but both cannot be empty.