Fiscal ID Labs

Business buyers need their tax ID on the invoice, but standard checkout has no field for it unless you are on Plus. Fiscal ID adds the field to the cart page, cart drawer, thank-you page and customer account. It validates as the buyer types: official check-digit rules for Spain, Argentina, Chile, Peru, Colombia and EU VAT, plus tax IDs for 80+ more countries (Brazil, Mexico, Italy, UK, US). Buyers can pick their country. Blocks checkout when required and saves the result on the order.