Express Checkout Buttons: Shop Pay, Apple Pay, and the Sale They Skip

Express checkout buttons skip the cart and the information step entirely, which is the point and the problem. Shop Pay, Apple Pay, and PayPal take the shopper straight to payment, so the sale they skip is the one where your discount code, your gift message, and your upsell were supposed to happen.

The buttons are not bad. They convert well, especially on mobile, where typing an address is the slowest part of buying. The question is not whether to offer them. It is where to offer them, and what you give up on the orders that take them.

What actually gets skipped

Discount codes are the first casualty. Express flows have no code entry step, so a shopper who arrived with a code from your email cannot use it, and the sale goes through at full price or does not go through at all. Gift messages and delivery instructions are the second: there is no place to write them in an express flow. Upsell and cross-sell blocks are the third, since the shopper never sees the cart page where they live.

Address validation is the quiet fourth. A normal checkout catches a bad address at the information step. An express checkout trusts the saved address, and a stale one ships the order to an old apartment. The cost shows up later, as a support ticket and a reshipment.

When express wins anyway

Returning customers with saved details are the best case. They have bought before, their address is current, and the express button turns a three-minute checkout into thirty seconds. Mobile traffic is the second best case, because typing on a phone is slow and the express button removes the slowest step. Low-consideration repeat purchases, the restock order, the refill, are the third.

Measure the completion rate per button, not the click rate. A button that gets clicked often and abandoned often is not converting. It is distracting. The number that matters is completed orders from shoppers who used it, against completed orders from shoppers who did not.

The setup that keeps both

Show express buttons on the product page but not the cart page, or the reverse, and watch which placement lifts completed orders. Product-page buttons catch the shopper who knows what they want. Cart-page buttons catch the shopper who is already committed and wants to move fast. Most stores do better with one placement than both, and the test that decides it is a month of completed orders, not a week of clicks.

Frequently asked questions

Do express checkout buttons increase conversion?

Often, yes, especially on mobile and for returning customers. The lift comes from removing typing, not from the button itself. Measure completed orders, not clicks, because a button that gets clicked and abandoned is not helping.

Can customers use discount codes with Shop Pay?

Not in the express flow. Express checkout skips the cart and the information step, which is where codes are entered. A shopper with a code needs the standard checkout to use it, which is why some stores show express buttons only on the product page.

Should I show express buttons on the cart page?

Test it. Cart-page buttons help shoppers who are already committed and want speed. Product-page buttons help shoppers who know what they want and want to skip the cart entirely. Most stores do better with one placement, and the test is completed orders over a month.

Does Apple Pay work on all devices?

No. Apple Pay needs an Apple device with Apple Pay set up, and a supported browser. Shoppers on other devices see the other express options instead. Offer more than one express button so the shopper who cannot use Apple Pay still gets a fast path.