Custom checkout UI
A custom checkout UI extension to capture and validate one field means dev time, testing, and ongoing maintenance every time Shopify updates checkout — for a feature many trade clients need but few want to pay a custom build for.
For agencies & developers
Building Shopify Plus stores for merchants who sell to the trade? Trade Account Checkout captures PO numbers, trade account numbers, VAT/ABN/EIN, and buying-group references at checkout — configured in the admin, no theme code, no checkout.liquid to maintain. Add it to a client in minutes.
Building a Shopify Plus B2B checkout for a client? Send us the use case and we’ll help map the fields, validation, metafields, and Shopify Flow setup.
Talk to us about a clientFree dev-store testing · Priority setup help
Quick answer
Trade Account Checkout lets Shopify Plus agencies add B2B checkout fields to client stores without writing custom checkout code. It's a checkout UI extension configured in the admin — capture a PO number, trade account number, VAT/ABN/EIN, or buying-group reference, validate it, save it to the order as a metafield, and auto-tag the order. No affiliate signup is required: install it on a client's store and reach out for help with the first setup.
Last updated: 16 June 2026
Why agencies use it
Checkout.liquid is gone and custom checkout UI is costly to build and maintain. This does the common B2B job out of the box.
A custom checkout UI extension to capture and validate one field means dev time, testing, and ongoing maintenance every time Shopify updates checkout — for a feature many trade clients need but few want to pay a custom build for.
Install, set your client's fields, labels, and validation in the admin, and go live. Values save to order metafields, orders are auto-tagged, and it keeps working through Shopify's checkout updates.
How it works
No theme code, on any client's Shopify Plus store.
Trial it free on the client's Shopify Plus development store — fields, validation, and order tagging.
Add what the client needs — PO number, trade account number, VAT/ABN/EIN — with your labels and rules.
Publish to production. Values save to the order, trade orders are tagged, ready for Shopify Flow and export.
Hand the configured workflow to the client, or stay on as their support contact.
What partners get
No commission scheme to sign up for — just practical help getting clients live.
Direct help configuring a client's checkout fields, validation, and tagging.
Install and trial on a Shopify Plus development store at no cost before going live.
We'll help configure the first client setup with you, end to end.
Join the early partner list for priority support and co-marketing as the program grows.
FAQ
What agencies ask before adding it to a client.
No. There's no signup or affiliate backend. Install Trade Account Checkout on a client's Shopify Plus store, configure the fields, and you're live. Reach out and we'll help with the first setup.
Yes. You can install and configure it on a Shopify Plus development store at no cost to trial the checkout fields, validation, and order tagging before going live on a client's production store.
No. It's a checkout UI extension configured in the Shopify admin — no theme code, no checkout.liquid, and no maintenance burden for your team when Shopify updates checkout.
Shopify Plus merchants selling to the trade who need to capture a PO number, trade account number, VAT/ABN/EIN, or buying-group reference at checkout — automotive, plumbing, building, and wholesale are common.
No. It's a field-capture checkout extension, not a payment method, processor, or gateway. For pay-on-account, pair it with Shopify's own manual payment method.
Email support@tradeaccount.app. We'll help you configure the first client's fields, validation, and tagging, and add you to the early partner list for priority setup support and co-marketing.
Tell us about a Shopify Plus client that needs PO, account, VAT, or trade fields at checkout, and we'll help configure the first setup.
Talk to us about a client