Shopify tests show express checkout works best when shoppers are ready to buy

A review of 13 A/B tests across 11 brands found that express-payment buttons delivered the strongest gains in carts and on mobile, while results on product pages varied and some faster checkouts reduced average order value.

Express checkout remains one of the most useful, and most easily misread, tools in Shopify conversion optimisation. A 2026 review by Blend Commerce of 13 A/B tests across 11 brands suggests that the feature can lift performance, but only when it is matched to the shopper’s stage in the journey, the device in use and the commercial role of the page. In those tests, ten produced positive commercial results, two were directional and one was mixed. The broad pattern is not that wallets should always be added, but that context determines whether speed helps or harms. That conclusion also fits broader Shopify guidance on checkout customisation, which emphasises that merchants now have more control over checkout design and need to use it selectively rather than indiscriminately. The wider testing literature on Shopify likewise stresses that payment widgets, trust signals and checkout changes often depend on placement and audience behaviour.

The strongest results in the Blend Commerce review came in carts and cart drawers, where product choice had already been made. In those placements, direct express-payment actions such as Shop Pay, PayPal and Google Pay repeatedly improved conversion, and in several cases increased revenue per visitor as well. That aligns with recent Shopify checkout guidance, which treats the checkout flow as a place where speed and confidence can reduce abandonment, and with other 2026 commentary suggesting that early, visible wallet access can improve lower-funnel conversion. Convfetti’s separate review of Shopify checkout tests reported a 6.4% conversion lift when express payment buttons were placed above the email field, reinforcing the idea that accelerated payment often works best when the shopper is already committed.

The Blend Commerce data also show that not all payment-related changes are equivalent. A wallet button is an action, while payment logos are a reassurance cue, and the two should not be treated as substitutes. Shopify’s own 2026 materials on Checkout Extensibility make clear that merchants can now test and tailor these experiences more precisely, but that flexibility also requires clearer hypothesis design. In practical terms, an express checkout button tries to shorten the route to purchase, whereas a logo strip simply tells shoppers that a preferred method should be available later. That distinction matters because the same store can see opposite effects depending on whether the page is trying to accelerate a purchase or support a more deliberate decision.

Product pages were far less consistent. In the Blend Commerce set, some stores won by removing express checkout from the PDP, while others won by adding it. That split is not contradictory so much as it is a sign that PDPs serve different jobs. A replenishment product with a familiar payment mix may benefit from an early shortcut, while a higher-consideration item may need the shopper to stay in the normal journey, compare options and build confidence before paying. This is exactly the kind of distinction Shopify’s checkout documentation and third-party A/B testing guides now encourage merchants to make, because the platform’s newer extensibility tools make granular experimentation possible but do not remove the need for a precise hypothesis.

That point is especially important for mobile. Blend Commerce found that the largest gains in several cart tests came from mobile shoppers, while desktop movement was often smaller or more mixed. Convfetti’s report on checkout experiments makes a similar argument: placement and friction reduction matter most where users are most likely to abandon under effort or delay. More broadly, current Shopify checkout practice is moving towards controlled rollout and device-aware testing, rather than one-size-fits-all changes. Adsx’s report on Shopify’s 2026 rollout features says merchants can now split-test themes, checkout configurations and customer account settings directly in admin, which should make it easier to treat mobile and desktop as distinct behavioural environments.

The Blend Commerce findings also underline the need to track revenue quality, not just conversion rate. In some tests, faster payment improved completed orders but reduced average order value, usually because it displaced recommendations or shortened product exploration. In others, payment visibility lifted both conversion and order value. That is why the most useful metric stack is usually conversion rate, revenue per visitor and average order value, with guardrails for products per order, checkout starts and any subscription or margin effects. The broader Shopify testing guidance from Conversion Studio and Varify reaches the same operational conclusion: Shopify merchants should be running structured tests with clear success measures, because a “win” in one metric can still conceal an unhelpful shift in basket quality.

There is also a separate operational consideration. Shopify’s newer checkout architecture means not every testing method works in every environment, and merchants on Checkout Extensibility need tools that can split traffic and report variants inside the appropriate extension framework. That technical constraint matters because it changes how quickly a merchant can validate a payment hypothesis and how confidently they can roll it out. The practical lesson from the Blend Commerce review is therefore not simply to add Shop Pay or PayPal wherever they fit on the page, but to decide whether the page needs acceleration, reassurance or removal of a premature shortcut, then test only that one idea.

Taken together, the evidence points to a more disciplined use of express checkout in Shopify. The best results came when the treatment matched intent, device and page context. The weakest came when a wallet shortcut competed with product selection or order-building. For merchants, the right question is not whether express checkout “works”, but where it works, for whom, and at what cost to order quality. That is the standard the current Shopify platform now makes possible, and the one serious CRO teams should use.