# Block or Allow Checkout by Customer Tag on Shopify

URL: https://geofraudshield.com/blog/block-checkout-by-customer-tag-shopify
Published: 2026-10-02
Reading time: 7 min read
Category: Tutorial
Author: Robert John, Founder & CEO at Blockly (https://geofraudshield.com/about#robert-john)
Publisher: Blockly (https://geofraudshield.com)

## TL;DR

Customer tags can control who is allowed to check out. Here is how to build wholesale-only products, VIP early access, and restrictions for repeat COD abusers using Shopify Functions.

## Questions this answers

- How does shopify work on Shopify?
- How does checkout customization work on Shopify?
- How does customer tags work on Shopify?
- How does shopify functions work on Shopify?
- How does wholesale work on Shopify?

## Primary sources referenced

- Shopify Functions (Shopify developer docs): https://shopify.dev/docs/apps/build/functions

## Citation format

Blockly (2026). Block or Allow Checkout by Customer Tag on Shopify. https://geofraudshield.com/blog/block-checkout-by-customer-tag-shopify