Shopify added discount support to Rollouts on October 2. Merchants can now launch an offer to a share of online store traffic, compare it against the existing promotion, and review conversion results before expanding.

Rollouts launched in January 2026 and could not test pricing or discounts. That was its most-cited limitation. It is now gone, roughly seven weeks before Black Friday.

What Discount Rollouts Actually Does

Shopify's changelog lists three capabilities: scheduling a discount change to a portion of traffic before expanding, comparing a new offer against your existing one with conversion results, and launching a discount alongside theme and checkout changes in a single rollout.

That third item is underrated. Coordinating a promotion with a theme change has historically meant separate deploys from separate teams, which is where version mismatches happen on high-traffic days.

Your existing customer eligibility rules still apply. Standalone discount start and end dates work as before.

The Plan Requirement and the Traffic Split

Scheduling and rollback are available on Basic and above. The actual traffic-split experiment requires Grow plan or higher, Shopify's second tier at roughly $105 per month.

Experiment mode splits traffic 50/50 between two offer types and tracks conversion.

One technical detail matters if you sell across channels. Discounts activated at 100% effective traffic are available across all sales channels. Partial-traffic Rollout activation applies to the Online Store only.

So a 50/50 discount experiment does not reach your POS, marketplace, or social channels. Only the online store participates.

Why October 15 Is the Date That Matters

Statistical significance on a discount test needs roughly 7 to 14 days of traffic, depending on your volume and the size of the effect.

Work backward from BFCM. If you want test results in hand before you lock your Black Friday configuration, the test needs to start by mid-October. Starting November 1 gives you a result after the decision is already made.

Low-traffic stores face a harder problem. Rollouts does not publish a documented significance test or call a winner, so a store without enough sessions can finish a two-week experiment with a difference that is noise. Calculate whether your traffic can detect the effect size you care about before committing two weeks to the test.

What to Test First

Test offer structure rather than offer depth. Comparing 15% off against 20% off mostly tells you that customers prefer a bigger discount. Comparing a percentage discount against free shipping, or a threshold-based offer against a flat discount, tells you something about how your customers respond.

Measure contribution per visitor, not conversion rate. A higher-converting offer that gives away more margin can lose money while winning the test on the metric Shopify displays.

Hold everything else constant. Running a discount experiment at the same time you change your theme defeats the purpose, even though Rollouts now lets you bundle them.

If You Use Third-Party Apps

Apps that read discounts need updating. Shopify's Admin GraphQL API version 2026-10 adds a read-only rollouts connection, and apps reading discount data should query Discount.rollouts alongside existing fields.

On API versions earlier than 2026-10, discounts get filtered out when they are active but may not reach all buyers, or when their status differs from what native dates imply.

If your analytics, reporting, or promotion tooling pulls discount data, confirm with the vendor that it accounts for Rollout-driven schedules. Otherwise your dashboard and your store will disagree about which discounts are live.