How-to

Tax all B2B customers by billing country

1. Open Settings → Shop → Customer groups and select your B2B group.
2. Set the custom field Tax base (shipping/billing country) to Billing country and save.
3. Make sure the customers in that group are set to Not set (fallback) so the group setting takes effect.

Treat a single customer differently

1. Open the customer under Customers.
2. Set the custom field Tax base (shipping/billing country) to Billing country or Shipping country and save.

The customer value overrides both the customer group and the global setting.

Switch the whole shop to billing country

1. Open Settings → System → Plugins → Customer Tax Country → Config.
2. Choose the sales channel (or "All sales channels").
3. Set Global tax base mode to Billing country and save.

Prepare for a VIES outage

1. Open the plugin configuration.
2. Choose Behaviour when the VAT-ID service (VIES) is unavailable:
3. Formal check – balanced default
4. Treat as invalid – tax-conservative; in case of doubt the customer pays VAT
5. Treat as valid – customer-friendly; the tax risk is yours

Find out why a customer is charged VAT

Work through these points in order:

1. Does the customer have a VAT Reg.No.?
2. Is the tax country (billing or shipping, depending on the mode) an EU country?
3. Does that country differ from the sales channel's country? Domestic deliveries always remain taxable.
4. Is the VAT ID valid? Check it directly in the EU VIES portal.
5. Which tax base actually applies — customer, customer group, or global?