July 1, 2026. The most expensive checkout failure is the one that does not announce itself. Yesterday, June 30, Shopify Scripts stopped executing for good. If your store ran custom checkout logic through Scripts, it did not throw an error this morning. Checkout still loads, orders still come in, and your admin looks completely normal. Underneath, the custom rules that shaped your discounts, shipping, and payment options are simply gone, and today is the first full business day when the wrong orders start to land. We ran the warnings while there was still time to prepare. This is the other playbook: how to find what broke and fix it fast.
Shopify confirmed on its developer changelog that all Scripts ceased to execute on June 30, 2026, with no grace period and no further extension. Editing and publishing Scripts had already been frozen since April 15. When a Script stops, checkout does not fail loudly. It quietly reverts to standard Shopify behavior, which is exactly why the damage can run for days before anyone notices.
What actually changed
- Discounts. Tiered pricing, volume breaks, and bundle logic that lived in Scripts no longer apply, so shoppers can check out at full price or at a price you did not intend.
- Shipping. Custom rate rules, along with any logic that hid, renamed, or reordered delivery options, revert to default, so every configured rate can now show to every customer.
- Payments. Rules that hid, renamed, or reordered payment methods, including B2B payment gating, stop running, so methods you meant to restrict can appear at checkout.
Why July 1 is the dangerous day
The failure mode here is silence. There is no error banner, no failed deploy, and no alert. The store keeps taking orders, so uptime monitoring stays green. You find out through symptoms instead: margins that look thin on this morning's orders, a customer who paid with a method you thought was hidden, or a shipping rate that should never have been offered. The sooner you look, the smaller the bill.
Your July 1 detection checklist
- Recover the list of what was live. Open the Script Editor and pull the Shopify Scripts customizations report so you know exactly which discount, shipping, and payment Scripts were running before yesterday.
- Run a real test checkout. Apply a discount a Script used to handle, request shipping to two or three different regions, and confirm any gated payment methods are still hidden. Watch for behavior that changed overnight.
- Audit orders placed since June 30. Look for wrong discount totals, shipping rates that should not have shown, and payment methods that should have been blocked. That is your real exposure.
- Triage by money at risk. Fix the rule that is leaking the most margin or breaking the most orders first, then work down the list.
Once you know what broke, decide how to make it right with customers before you rebuild. If a Script had been applying a live promotion that silently stopped, you may choose to honor the intended price for orders placed since June 30, or to reach out to the buyers affected. Getting ahead of it protects both margin and trust, and it is far cheaper than a wave of support tickets and chargebacks later.
Native settings or Functions: how to choose
Reach for native Shopify settings when the rule is simple and standard, for example a flat automatic discount, a straightforward free shipping threshold, or a rate tied to a single condition. Reach for Functions when the logic is conditional or layered, for example tiered discounts that depend on cart contents, shipping rules that vary by customer tag or destination, or payment gating for B2B accounts. As a rule of thumb, if you could not express the rule with a single settings toggle, it belongs in a Function. Building it properly now, with a test in preview first, is what keeps this from turning into a second silent failure a week from today.
The recovery path
Not every Script needs a developer. Simple rules can move to native Shopify settings, such as automatic discounts, native shipping profiles, and built in checkout rules, with no code at all. Anything with real custom logic moves to Shopify Functions, the replacement Shopify has pointed to all along. Functions are compiled WebAssembly modules that run on Shopify's own infrastructure in under five milliseconds, across three API families that map cleanly to what you lost: discounts, shipping, and payments. You can build them yourself or install a Function app from the Shopify App Store. Build in a draft or preview, confirm each Function reproduces the old behavior, deploy, then test a full checkout end to end before you call it done.
What it means for operators
The Scripts blackout is a lesson in platform dependency risk, and it will not be the last deprecation to hit a tool you rely on. Three habits make the next one a non event. First, keep a written specification of your critical checkout logic, so a rule can be rebuilt from a document rather than reverse engineered from memory. Second, monitor outcomes and not just uptime, because a store that is up can still be quietly losing money. Third, treat every deprecation notice as a revenue event with a clear owner and a deadline, not an email to file away. We flagged this sunset in our June 24 countdown and set it in the wider context of the Summer Editions changes. If your checkout is behaving strangely today, you can hire a Shopify expert to diagnose and migrate it fast, have us build the Shopify apps and Functions that replace your Scripts, or wire up automated monitoring that flags a broken checkout rule before your customers do.
Frequently Asked Questions
Open the Script Editor and pull the Shopify Scripts customizations report to see which Scripts were live before June 30, then run a test checkout and review recent orders. If you had any custom discount, shipping, or payment logic in Scripts, it stopped executing on June 30 and your checkout reverted to standard behavior.
Not necessarily. The failure is silent. Checkout keeps working and orders keep processing, but any custom rules are gone, so you can be losing margin on missing discounts or shipping the wrong rates with no error shown. The only way to be sure is to test each rule and audit orders placed since June 30.
Shopify Functions, and for simple rules, native Shopify settings with no code. Functions are compiled WebAssembly modules that run at checkout in under five milliseconds and cover discounts, shipping, and payments through dedicated APIs. You can build them or install a Function app from the Shopify App Store.
You cannot retroactively reapply a Script, but you can decide how to make it right. Many merchants honor the intended promotion for affected orders or contact those buyers directly. Pull the orders since June 30, compare them to the intended rules, and handle the exceptions before they become support tickets or chargebacks.
For a store with a handful of standard rules, an experienced developer can often rebuild and test them in a day or two. Complex, layered logic takes longer because each Function must be tested in a preview before it goes live. The priority is to fix the rules leaking the most money first, then work through the rest.
Keep a written specification of your critical checkout logic, monitor checkout outcomes rather than just uptime, and treat every platform deprecation notice as a revenue event with a clear owner and deadline. Automated monitoring that flags an unexpected change in discounts, rates, or payment methods turns a silent failure into an alert.