title: Magento: Add customer's taxvat number to billing address (address templates)
body: <p>I want to add the customer's taxvat number to the billing address.</p>
  
  <p>I'd like to add it in Customer Configuration > Address Templates, so it's always visible (pdf invoice, while looking at an order in admin, etc.).</p>
  
  <p>I tried quite a few variables (taxvat, customer_taxvat, customer.taxvat, etc.), but nothing seems to work. Worst part is, I don't even know where to look for the list of available variables (google doesn't give me quite what I want)</p>
  
  <p>Tl;dr I want something like this:</p>
  
  <pre><code>{{depend prefix}}{{var prefix}} {{/depend}}{{var firstname}} {{depend middlename}}{{var middlename}} {{/depend}}{{var lastname}}{{depend suffix}} {{var suffix}}{{/depend}}
  {{var company}} &lt;br /&gt; Tax number: {{var ???}} 
  </code></pre>
  
  <p>Is this easily achievable through the use of a variable or does this require a nastier solution?</p>