<details class="details"><summary>What does the app do?</summary><div data-type="detailsContent">The app allows EU business customers to validate their VAT number directly in the Shopify checkout.When a VAT number is successfully validated:<ul><li>VAT exemption is applied immediately</li><li>Checkout totals are updated in real time</li><li>The order is processed correctly under EU reverse-charge rules</li></ul>No Draft Orders are used. Everything happens inside checkout.</div></details><details class="details"><summary>Is the app fully VIES and EU compliant?</summary><div data-type="detailsContent">Yes.<ul><li>VAT numbers are validated using the official EU VIES API</li><li>The app follows EU reverse-charge VAT rules</li><li>VAT is only exempted for cross-border EU transactions</li><li>Domestic VAT numbers are validated but not exempted</li></ul></div></details><details class="details"><summary>How do I add the EU VAT Validation to my checkout page?</summary><div data-type="detailsContent">You add the app via Checkout UI Extensions.<ol><li>Go to Settings → Checkout</li><li>Click Customize next to your checkout configuration</li><li>Add the EU VAT Validation app block</li><li>Enable Allow app to block checkout</li><li>Save and publish</li></ol>📘 See the full installation guide for exact placement details.</div></details><details class="details"><summary>Where should I place the app block on my checkout page?</summary><div data-type="detailsContent">Placement depends on your checkout layout and product type.<h3 id="rafwqafcz3b" data-toc-id="rafwqafcz3b">Physical goods</h3><ul><li>One-page checkout: Delivery section → Delivery address</li><li>Three-page checkout: Information page → Contact section → Shipping address</li></ul><h3 id="2b2fszryeqs" data-toc-id="2b2fszryeqs">Digital or mixed products</h3>Digital-only checkouts do not show shipping fields.In this case, add a second app block:<ul><li>One-page checkout: Payment section → below “Remember me”</li><li>Three-page checkout: Information page → Contact section → below Shipping group</li></ul></div></details><details class="details"><summary>Where can I find the VAT number entered by my customer?</summary><div data-type="detailsContent">Depending on your settings, the VAT number can be found in:<ul><li>Order details</li><li>Company location tax details (Shopify B2B)</li><li>Company location notes</li><li>Order metadata used by the app</li></ul>You can configure where VAT numbers are stored in General Settings.</div></details><details class="details"><summary>VAT isn’t removed from the total price in checkout</summary><div data-type="detailsContent">Common causes:<ul><li>The VAT number belongs to the same country as your store</li><li>The customer email in checkout does not match the validated email</li><li>VAT exemption is disabled for that country</li><li>The VAT number is invalid or not VIES-eligible</li></ul>Only cross-border EU VAT numbers qualify for exemption.</div></details><details class="details"><summary>VAT is removed, but the price stays the same at checkout</summary><div data-type="detailsContent">This is expected behavior in some pricing setups.This usually means:<ul><li>Prices are VAT-exclusive</li><li>Or pricing is handled by Shopify Markets or fixed prices</li></ul>In VAT-exclusive setups:<ul><li>VAT removal affects tax calculation, not displayed prices</li></ul>This is not an error.</div></details><details class="details"><summary>How do I handle digital goods or mixed products?</summary><div data-type="detailsContent">Digital products do not require shipping information.To ensure VAT validation is always available:<ul><li>Add an additional EU VAT Validation app block in checkout</li><li>Place it in the Payment or Contact section (depending on layout)</li></ul>This ensures VAT exemption works for:<ul><li>Digital-only carts</li><li>Mixed digital and physical carts</li></ul></div></details><details class="details"><summary>How can I tag tax-exempt orders automatically?</summary><div data-type="detailsContent">You can use Shopify Flow to tag VAT-exempt orders automatically.Typical setup:<ul><li>Trigger: Order created</li><li>Condition: Order is tax-exempt</li><li>Action: Add order tag (e.g. <code>vat-exempt</code>)</li></ul>📘 See the full Shopify Flow tutorial for a step-by-step guide.</div></details><h2 id="aiaeix6ddkd" data-toc-id="aiaeix6ddkd">My question isn’t listed here</h2>If your question is not covered:<ol><li>Check the Installation and Settings documentation</li><li>Review your Shopify tax and market configuration</li><li>Contact support with:<ul><li>A description of the issue</li><li>A test VAT number</li><li>Collaborator access (if needed)</li></ul></li></ol>

This FAQ answers the most common questions about the EU Tax Exemption – Checkout app for Shopify Plus.

Frequently Asked Questions (FAQ)

Floris de Vries

B2B & Wholesale

B2B Pricing

Bulk forms

Tax and currency

EU Tax exemption

Options Price Calculator

Getting Started

Follow the steps below to install the Options Price Calculator app in your Shopify store.

How to install the app

How to Add the Extension to the Product Page

Form Fields

Text Field

Number Input

Dropdown

Radio Buttons

Checkbox

Rich Text

Date Picker

Swatch

File Upload

The Calculation / Formula section defines how the final product price is calculated. Using formulas, you can combine customer input, product pricing, and logic to create fully dynamic and flexible price calculations. This step is where all inputs from Step 1 come together.

Calculation / Formula

Calculation & Pricing Overview

Using the Formula Builder

Variables and Field Values

Conditional Pricing (Premium)

Pricing / Formula Examples

Calculator Settings

General

Translations

Linking Products

Linking Products & Variants to Calculators

Bulk Linking & Filtering Calculators

App-wide Settings

Overview

Storefront Theme Bindings

Using the Selector Picker (Pick price & Pick add to cart)

Custom CSS

Additional

This guide explains where to edit the order confirmation email in Shopify and how to download and use the prepared email template file.