Shopify Functions
Shopify Functions are small pieces of custom logic that let you modify how Shopify handles discounts, shipping, payments, and checkout validation behind the scenes.
Think of them as custom rules you give Shopify’s backend. For example: “When a customer’s cart exceeds $100, apply a 15% discount automatically.” Functions evaluate conditions in real time during checkout and return an instruction to Shopify, which applies it instantly.
Functions are available on all Shopify plans through apps. You don’t need Shopify Plus to use them.
Shopify Functions in Detail
Functions replaced Shopify Scripts, which stopped working on June 30, 2026. Scripts were limited to Shopify Plus merchants and only covered line item discounts, shipping modifications, and payment filtering.
Functions expand on that significantly. They cover:
- Custom discounts. Create tiered pricing (more discount as cart value grows), volume discounts for specific collections, or conditional free shipping based on cart weight or customer location.
- Shipping customization. Show, hide, or rename shipping options at checkout based on cart contents, product type, or customer region.
- Payment method rules. Control which payment methods appear at checkout. For example, hide “Cash on Delivery” for orders over $500, or prioritize a preferred payment method for returning customers.
- Checkout validation. Block checkout if certain conditions aren’t met, like a minimum order quantity for a wholesale account, or age verification for restricted products.
- Fulfillment routing. Route orders to the nearest warehouse or location based on product type, customer region, or stock availability.
Functions run on Shopify’s own infrastructure using WebAssembly (a fast, lightweight code format). This means they execute in milliseconds and don’t slow down your checkout.
How to Use Shopify Functions Without Code
The easiest way to use Functions is through apps from the Shopify App Store. Many apps use Functions under the hood and provide a visual interface for configuration. You install the app, set your rules, and the Function runs automatically at checkout. No coding required.
Search the App Store for terms like “custom discount,” “delivery customization,” or “payment rules” to find Functions-powered apps. Look for apps that specifically mention Shopify Functions in their description.
If you have development experience, you can also build custom Functions using JavaScript or Rust through a Shopify Partners developer account.
Why Are Shopify Functions Important for eCommerce Sellers?
Shopify’s default discount and checkout settings cover the basics. But many stores need more specific logic: discounts that apply only under certain conditions, shipping options that change based on cart contents, or payment methods that vary by customer type.
Before Functions, this kind of customization required Shopify Plus and a developer. Now it’s accessible to any seller through apps, on any plan.
For dropshippers, Functions are especially useful for setting up discount logic that protects margins and shipping rules that reflect your actual fulfillment setup.
Frequently Asked Questions
Do I need Shopify Plus to use Shopify Functions?
No, Functions are available on all Shopify plans through apps installed from the Shopify App Store. Building custom Functions from scratch does require a Shopify Partners developer account, but using pre-built apps does not require Plus.
What replaced Shopify Scripts?
Shopify Functions replaced Shopify Scripts. Scripts stopped working on June 30, 2026. Functions cover everything Scripts did, plus additional capabilities like checkout validation, fulfillment routing, and location rules.
Can I use Shopify Functions without any coding?
Yes, many apps in the Shopify App Store are powered by Functions and offer a no-code visual interface. You configure your rules through the app’s settings, and the Function runs automatically during checkout.
