I run a Shopify store and need a VAT-exemption flow that works just like the one on josephs-wigs.com. Here’s what I’m after: • A fixed-field form embedded in the cart where customers can declare their VAT-exempt status. • Once the form is completed, VAT should be removed automatically at checkout without any extra clicks. • The exemption details must be kept only for a limited window (for example 30 days) and then cleared, so nothing is stored indefinitely. Please build this directly into my theme—no recurring-fee apps. The solution has to look seamless on mobile and desktop, follow Shopify’s best practices (Liquid, JS, cart and checkout scripts), and come with a brief set-up note so I can adjust the temporary-storage duration later. I’ll consider the job done when I can: 1. See the form appear in the cart with all fixed fields rendered correctly. 2. Complete the form and watch VAT disappear through to the final payment step. 3. Confirm the data purges automatically after the agreed period. If you’ve implemented similar tax logic on Shopify before, even better—let’s get started.