Setup

• Retail POS Backend
• Chargify 

Steps

1. Search for the retailer in Retail POS Backend
2. Under Integrations, click Chargify Billing
3. Click View Subscription
4. In Summary, Click on the retailer's name
5. Under Customer Account, click on Actions
6. Select Edit from the drop down menu
7. Scroll down to the bottom and enter in the VAT field 
8. Click Save Changes