April 15 came and went, and Shopify quietly flipped a switch. If you tried to edit a Script after that date, you already know: the Script Editor is locked. No edits. No new scripts. No emergency fixes. Your existing scripts still run until June 30, 2026 — but you can't touch them. The Shopify scripts migration in 2026 isn't optional anymore. It's already underway whether you started or not.

That gives you 10 weeks. If your BOGO logic breaks, your tiered pricing glitches, or your payment gateway rules need updating, you're locked out of the only tool that could fix it. Every day you wait is a day closer to checkout logic that simply stops working mid-transaction.

What Actually Happened on April 15

Shopify announced the Scripts deprecation months ago, but the April 15 editing freeze caught many merchants off guard. The timeline works like this:

April 15, 2026: Script Editor locked — no editing, no publishing new scripts
June 30, 2026: All existing scripts stop executing entirely

Your published scripts still run right now. But if anything needs changing — a price adjustment, a new product added to a discount rule, a seasonal shipping tweak — you can't make that change through Scripts anymore. The only path forward is migration.

Figure Out What Your Scripts Actually Do

Before you migrate anything, you need an inventory. Most stores running Scripts have accumulated them over months or years, and nobody remembers exactly what each one does.

Go to Settings → Checkout → Script Editor in your Shopify admin. You'll see your published scripts organized by type. Shopify Scripts fall into three categories:

Line item scripts — change prices, apply discounts, run BOGO deals, enforce quantity rules
Shipping scripts — hide, rename, or discount shipping methods at checkout
Payment scripts — hide, rename, or reorder payment gateways based on conditions

Open each script and document what it does in plain language. "If cart contains Product A and Product B, discount Product B by 20%" is more useful than the Ruby code itself. You'll need this list to find the right replacement for each one.

Shopify also provides a Scripts customizations report in your admin that maps your active scripts to potential replacements. Start there — it saves time.

The Replacement: Shopify Functions

Shopify Functions replace all three Script types — line item, shipping, and payment — with WebAssembly-based logic that executes in under 5 milliseconds. Each script type maps directly to a specific Function API:

Line item scripts → Discount Function API. Handles product discounts, order discounts, and shipping discounts. Covers BOGO, tiered pricing, automatic discounts, and most of what line item scripts did.
Shipping scripts → Delivery Customization Function API. Rename, sort, or hide delivery options at checkout. If you were hiding express shipping for certain regions or renaming carrier names, this is your replacement.
Payment scripts → Payment Customization Function API. Rename, reorder, or hide payment methods. If you were hiding COD for orders over a certain value or restricting payment options by country, this handles it.

One major difference: Scripts were Plus-only and custom-coded. Functions are distributed through apps, which means stores on any Shopify plan can use public apps that contain Functions. You don't necessarily need a developer this time. If you're evaluating which apps replace your scripts, our guide to the best Shopify discount apps that replace Scripts covers the top options.

The 5 Most Common Scripts and How to Replace Them

1. Buy X Get Y (BOGO) discounts. Shopify's built-in automatic discounts now support BOGO natively. Go to Discounts → Create discount → Buy X get Y. No app needed for straightforward BOGO rules.

2. Tiered pricing / quantity breaks. If your script applied "Buy 3, save 10% — Buy 5, save 20%," you can now set this up through Shopify's native volume discount feature or through apps that use the Discount Function API. EasySell handles quantity discount tiers directly on the product page without needing custom code.

3. Hide payment methods by condition. If your script hid COD above a certain order value or restricted payment options by customer tag, look for a Payment Customization app on the App Store. Several free options exist — search "payment customization" and filter by Shopify Functions compatibility.

4. Free shipping over a threshold. Shopify's native automatic discounts handle "Free shipping over $X" without any script or app. Create a shipping discount with a minimum purchase requirement.

5. Hide shipping methods by region. Delivery Customization apps replace this. If you were hiding express shipping for remote areas or showing only local pickup for certain postal codes, these apps handle the logic through the Delivery Customization Function API.

What Functions Can't Do Yet

Functions cover most common script use cases, but not all. A few gaps to be aware of:

Complex conditional logic across multiple script types. If you had a script that checked cart contents, then modified shipping, then adjusted payment options — all in one flow — you'll need separate Functions for each step. They don't chain the same way.
Function output is capped at 20KB. If your script processed hundreds of line items with complex discount trees, you might hit this limit.
The 5ms execution ceiling is real. Heavy iteration, large data structures, or regex-heavy logic can exceed it. Test on a development store before going live.

If your script does something truly custom that no app or native feature covers, you'll need a developer to build a custom Shopify Function. The Shopify developer docs have migration guides with code examples for each script type. For checkout-related changes, see our guide to Shopify's checkout extensibility migration deadline — it overlaps with the Scripts shutdown.

Your 10-Week Shopify Scripts Migration Checklist

You have until June 30. Here's the order of operations:

Week 1: Audit. List every active script. Document what each one does in plain language. Check Shopify's customizations report for suggested replacements.
Week 2–3: Replace with native features first. BOGO, volume discounts, free shipping thresholds — check if Shopify's built-in tools already cover it. No app install needed.
Week 4–5: Install apps for everything else. Search the App Store for Discount, Delivery Customization, and Payment Customization apps. Most common scripts have app-based replacements that take minutes to configure.
Week 6–7: Test on a development store. Scripts and Functions can coexist until June 30. Run both side by side and compare checkout behavior. Verify discounts apply correctly, shipping options display properly, and payment methods show or hide as expected.
Week 8: Disable scripts, go live with Functions. Once you've confirmed parity, disable your scripts and rely entirely on Functions. Do this before June 30 so you're in control of the transition — not Shopify.
Week 9–10: Buffer. Things will break. You'll find an edge case you missed or a script you forgot about. Having two weeks of buffer is the difference between a calm fix and a checkout emergency.

Don't Wait for June

The merchants who get hurt aren't the ones who can't migrate. The migration itself is straightforward for most script use cases. The ones who get hurt are the ones who start in June, discover a complex edge case on June 20, and spend the last 10 days scrambling while their checkout is partially broken.

Start your Shopify scripts migration this week. Open your Script Editor, document what's there, and check the Shopify customizations report. Most stores can replace their scripts with native features and a couple of apps in an afternoon. The longer you wait, the less buffer you have when something doesn't migrate cleanly — and something always doesn't migrate cleanly.