ShipStation does not currently have a dedicated field replacement for a Value Added Tax (VAT) ID number. To include your VAT ID on your packing slip, you will need to manually edit your packing slip's HTML to add this value.
This example adds the VAT ID field to the default packing slip Order Header, under the Order Date.
However, you can add this information wherever you like in the Order Header or Order Footer sections of your packing slip. Go to the Packing Slip Template in your template settings and do the following:
Open the Order Header of your packing slip HTML editor.
Locate the following section of code:
<tr> <td align="right" class="label"> Date </td> <td> [Order Date] </td> </tr>
Add the following snippet of HTML underneath the closing </tr> tag (where "your vat id" is your actual VAT ID number) :
<tr> <td align="right" class="label">VAT ID</td> <td>your vat id</td> </tr>
Your HTML should now look like this:
Save your template.
Repeat these steps for any template that requires the VAT ID.
If your selling channel already includes VAT at either the item or order level, the Sales Tax field imported into ShipStation could be duplicating the taxed amount, causing the order total to be higher than it should be on a packing slip. This is due to the order total including the taxes paid field in its total.
To compensate for this, use the field replacement [Amount paid] instead of [Order total] in the footer section of the packing slip.