March 26, 2026 by Alex Massaad · 6 min read
Shopify Scripts Are Being Deprecated: What Store Owners Need to Do Before June 2026
If your store leans on Shopify Scripts for custom discounts, shipping logic, or payment rules at checkout, there’s a date you can’t ignore. Shopify is retiring Scripts and moving everyone to a newer system called Shopify Functions.
This has been a slow-motion deprecation. Script Editor came out of the App Store back in August 2024, the cutoff got pushed twice, and the final wall is now June 30, 2026, when existing Scripts stop running. The catch most people miss: as of April 15, 2026 you can’t edit or publish Scripts anymore, only run what you’ve already got. So if Scripts touch your checkout in any way, the window to do this calmly is already narrowing.
What are Shopify Scripts?
Scripts are small bits of Ruby that run during checkout to customize three things:
- Line item scripts change cart contents. Buy-two-get-one, tiered discounts, an automatic gift over a threshold.
- Shipping scripts rename, reorder, or hide shipping options based on what’s in the cart.
- Payment scripts show, hide, or reorder payment methods based on conditions you set.
They run server-side, which makes them fast and tamper-proof, and they’ve been a Plus staple since 2016. Migrating them off Scripts is now one of the more common jobs that lands on our desk as a Shopify Plus agency.
Why is Shopify retiring Scripts?
Scripts were powerful for their time, but boxed in. They only ran at checkout, only spoke Ruby (a language most Shopify devs don’t otherwise touch), and you couldn’t package or distribute them through an app.
Functions fixes all three:
- They run WebAssembly, so you can write them in Rust, JavaScript, or anything that compiles to Wasm.
- They’re distributable. You can ship one inside an app and install it across many stores.
- They reach well past checkout into discount logic, cart transforms, fulfillment constraints, and more.
- They’re quick, running in a sandbox with a hard performance ceiling (under 5ms).
What’s actually changing
The practical version:
| Feature | Scripts (Old) | Functions (New) |
|---|---|---|
| Language | Ruby | Rust, JS (via Wasm) |
| Where it runs | Checkout only | Multiple extension points |
| Who can use it | Plus merchants only | All plans (varies by function type) |
| Distribution | Store-specific | App-distributable |
| Editor | Script Editor app | Shopify CLI + code |
| Deadline | June 30, 2026 | Available now |
The shift that catches people off guard is that Functions are code-first. There’s no Script Editor equivalent, no box in the admin to paste Ruby into. You write the logic in your dev environment, deploy it as part of an app, and configure it in the admin afterward. For merchants who’d been quietly editing their own Scripts for years, that’s a real change in how the work gets done.
Who’s affected?
You’re in the path of this if you have Script Editor installed with active scripts, if automatic discounts at your checkout come from Scripts rather than Shopify’s native discount system, or if you customize shipping or payment options at checkout through Scripts.
You’re fine if your discounts run entirely through Shopify’s built-in system (automatic discounts, discount codes), or if your checkout customizations come from third-party apps that are handling their own migration. When in doubt, the next section sorts it out.
How to check whether you’re using Scripts
Open your Shopify admin and go to Apps > Script Editor. If there are active scripts listed, those are the ones on the clock. Write down what each one does while you’re in there, because you’ll be rebuilding that exact behavior in Functions.
No Script Editor in your apps list? Then you’re not using Scripts directly. One thing worth doing anyway: check with whoever built your store. We’ve found plenty of Scripts that a previous developer wired in during a custom build and never mentioned to the owner.
The migration path
Audit what you have. Document each script in plain language, the way you’d explain it to a coworker. “3+ items from the Summer collection, take 15% off.” “Hide Express Shipping for anything over 20kg.” “Push Shop Pay to the top for mobile.” That list is your spec for everything downstream.
Check for a native alternative. Shopify keeps widening what its built-in tools can do, and some logic that used to need a script now doesn’t. Buy X Get Y lives in the native discount system. Conditional automatic discounts handle more complex rules than they used to. Discount combination settings may cover a case you assumed needed code. If a native feature does the job, take it. It’s the cleanest migration there is, because there’s nothing to maintain afterward.
Build or install a Function for the rest. Anything native can’t handle becomes a Function, and you’ve got three ways to get there:
- Use a third-party app. Several App Store apps now offer Functions-based customization. If your needs are common (tiered discounts, conditional shipping), an existing app may slot right in.
- Have a developer build a custom Function. The right call for logic that’s complex or specific to your business. A Function is essentially a tiny app running your code at one extension point. We walked through a real before-and-after in our Functions vs Scripts migration walkthrough.
- Build it yourself. If you’ve got the development resources, the Shopify Functions documentation covers setup. You’ll want the Shopify CLI, some JavaScript or Rust, and a working knowledge of Shopify’s app workflow.
Test like it’s checkout, because it is. Functions don’t behave exactly like Scripts. The data model is different (GraphQL input instead of Ruby objects), the execution context is different, and edge cases you forgot about will surface. Run every scenario your old Scripts covered before you trust it.
Deploy with room to spare. Once your Functions are tested, ship them and pull the old Scripts. Don’t leave this for the last week of June. Give yourself buffer for the debugging you don’t see coming, because there’s always some.
What happens if you do nothing?
After June 30, 2026, Scripts just stop. Checkout reverts to default Shopify behavior: the custom discounts disappear, shipping customizations reset, payment ordering and filtering go back to standard. There’s no gentle ramp-down, no warning banner for your customers. It’s a switch. If your checkout depends on Scripts, doing nothing means shoppers walk into a different, probably confusing checkout overnight, and you find out from the support tickets.
How we handle it
At Victoria Garland Creative Inc. we build custom Shopify apps and Functions on Gadget.dev, which cuts a lot of time out of the build. On a Scripts migration specifically, the shape of the work is usually the same: audit the existing Scripts and pin down the business logic behind each one, move whatever we can onto native Shopify features, build Functions for the rest, test across the full catalog and every checkout path, then deploy and keep an eye on it for a while after.
Not sure where your store stands? Reach out for a free consultation and we’ll review your current Scripts and tell you straight what the migration actually involves for your setup.
The bottom line
This is happening whether or not it’s on your roadmap. Functions are the better technology by a clear margin: faster, broader reach, logic you can reuse across stores. None of that helps you if checkout quietly breaks on July 1. Start with the audit. If what you’ve got is simple, native features might cover it. If it’s complex, get a developer in sooner rather than later. The one outcome worth avoiding is scrambling in the last week of June.
