Shopify in October: your conversion rate changed. Your shoppers did not.
Since 21 September Shopify counts sessions differently, discounts can now be tested in Rollouts, and from 23 October US return shipping is taxed. What each one does to the numbers you read — and what it does not touch.
Three changes landed in Shopify between 21 September and 2 October. One changes a number you probably look at every day, one gives you a better way to decide a discount, and one changes what a return costs in the United States. None of them changes your orders, your sales or your profit — which is exactly why each needs reading carefully.
1. Sessions are counted differently since 21 September
Shopify now focuses the default sessions view on human visitors where the human-or-bot filter is available, classifies bot and system traffic more consistently, and keeps real shopper journeys visible even when they do not include a standard pageview. Shopify says plainly that session-based metrics may look different afterwards, and lists them: sessions, conversion rate, add-to-cart rate, reached-checkout rate, checkout conversion rate, bounce rate, pageviews per session, online-store visitors and searches.
Orders, sales and customer counts are not changed. So if your conversion rate jumped in the last week of September, that is a new denominator, not a better store. Shopify’s own advice is to treat 21 September as a new baseline when comparing reports across it.
What this means in practice: do not judge a September campaign, a new theme or an ad change by a conversion rate that straddles 21 September. Judge it by orders and by what those orders kept — neither moved with this change.
2. Discounts can be tested in Rollouts since 2 October
Rollouts — Shopify’s tool for scheduling and testing storefront changes — now takes discounts. You can launch an offer to part of your traffic and widen it later, compare a discount against your existing offer and review the conversion results, and schedule a discount to go live with theme and checkout changes in one rollout. A discount’s customer-eligibility rules still apply.
This is the right tool for the question every store asks before Black Friday. One warning about how it reports: a deeper discount almost always converts better. The test that matters is which offer leaves more money per visitor after VAT, the cost of goods, the payment fee and the ads — not which one sells more units. Our Black Friday post works that sum on one product.
3. US return shipping is taxed from 23 October
For stores using Shopify Tax or the Tax Platform, return shipping fees on orders shipped to US addresses will be taxed like any other shipping charge from 23 October 2026. Shopify shows the estimated tax when a return is created and records the final amount when it is processed, and the tax flows into its tax reports. Your existing shipping tax settings still apply: where shipping is untaxed in a state, return shipping stays untaxed there.
The one action Shopify asks for: if you calculate, collect or reconcile tax on return shipping by hand today, review that workaround before 23 October so the tax is not counted twice. European and UK stores are not affected — this applies to US addresses only.
What it does to the figure that stays
Nothing, directly — and that is the point. Profit is built from orders, refunds, costs and taxes, and none of these three changes alters an order. What changes is the story the analytics screens tell around them. In Profflow, net profit, margin and return on ad spend are read from the orders themselves, so a new session baseline does not move them.
