If you are an EU-established company and you do not provide a valid VAT number, we charge the VAT rate of the country your company is established in. If you want to avoid paying VAT you need to provide a valid VAT number.
You can change or add your VAT number from Settings > Billing Information.
A VAT number consists of a country code followed by a series of digits.
For example:
Belgium: BE0000000000
France: FR000000000