Why checkout is the hidden conversion killer in ecommerce

17 Oct 2025
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A staggering 50% of shoppers will abandon their online purchase if the checkout process isn’t quick and clear. This headline stat from the latest RetailX EU1000 report, Checkout as the Universal Touchpoint, highlights a critical, yet often overlooked, stage in the customer journey: the checkout. A long or disruptive checkout can prove to be a hidden conversion killer – but the good news for retailers is that it can also be an opportunity to build customer loyalty and help win future sales.

Evolving process

In an era where marginal gains can make or break ecommerce success, the checkout has evolved from a transactional endpoint to a strategic touchpoint. The report reveals that checkout complexity and friction are responsible for up to 68% of abandonment, with consumers increasingly intolerant of unclear shipping costs, limited payment options, and tedious requirements such as account registration.

As Maxim Uvarov, head of marketing at checkout-as-a-service (CaaS) provider Simpler, explains, retailers who overlook this crucial stage in the customer journey are missing a trick. “Checkout may seem like a small part of the customer journey – something that appears only after the buying decision has already been made, and therefore seems to have little impact,” he says. “In reality, it’s quite the opposite: checkout is responsible for up to 50% of customer drop-off.

“At Simpler, we believe it’s essential to isolate the checkout stage and talk specifically about why it fails, and how to fix it,” he adds. “This analysis is valuable for virtually any online retailer: in an era of marginal gains, checkout remains a major opportunity.”

The rise of CaaS

As the report outlines, checkout-as-a-service (CaaS) is emerging as a transformative solution that’s already seeing widespread adoption across fast-moving sectors including beauty and fashion. By replacing fragmented systems with a unified, agile platform, retailers can offer faster, more secure, and personalised experiences. As features like one-click checkout, real-time inventory, and third-party payment integration (preferred by 74% of shoppers) are now an expectation, not a nice-to-have, CaaS ensures that the checkout experience delivers for customers while offering peace of mind for retailers, who don’t need to worry about product or security upgrades, shipping methods or UX enhancements.

Retailers adopting CaaS see measurable improvements: reduced cart abandonment, higher average order values, and increased customer loyalty. The report features case studies from brands like Miin Cosmetics and Funky Buddha that show how streamlining checkout can lead to record-breaking product launches and mobile conversion boosts.

As the report states: “ultimately, checkout-as-a-service frees up merchants to invest in growth and customer relationships, safe in the knowledge that the most critical part of their online store is always ahead of the curve.” Retailers who optimise this stage not only improve conversion rates but also build trust and long-term relationships with their customers.

Interested in more detailed insight?

You can download the RetailX EU1000 report Checkout as the Universal Touchpoint here.

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