Across ecommerce sectors, up to 70% of online baskets are abandoned. 

A significant portion of abandonment is driven by friction and uncertainty during checkout. Cart abandonment is not just a marketing problem anymore; in 2026 it is a margin problem.

Ecommerce checkout optimisation directly impacts revenue conversion, cost per acquisition, cost-to-serve, working capital and customer lifetime value. When checkout promises and fulfilment capability are misaligned, the result is lost revenue, higher service costs and operational instability.  

Why cart abandonment persists, and why it matters financially

Customers abandon carts for predictable reasons:

• Slow, mobile-unfriendly checkout flows
• Limited or unsuitable payment methods
• Unexpected shipping costs
• Unclear delivery timelines

These issues create friction at the point of decision and in many cases, the underlying cause is operational misalignment: checkout communicates a promise, and fulfilment must deliver it.

When delivery propositions such as next-day shipping, late cut-offs or cross-border availability are not fully supported by network capability, conversion suffers and trust erodes.

Ecommerce checkout optimisation improves conversion when payment, delivery and fulfilment are configured as one system. This is where ecommerce checkout optimisation becomes a structural growth lever rather than a UX tweak.

How to calculate cart abandonment rate

Cart abandonment rate is the percentage of online shoppers who add products to their cart but abandon at checkout before completing the purchase. 

This cart abandonment rate is calculated by a simple formula:

Cart Abandonment Rate = ((carts created – completed purchases) ÷ carts created) x 100

For example, if 1,000 shoppers were to create a cart and only 320 complete the purchase then the Cart Abandonment Rate would be 68%. 

Checkout optimisation is an operations strategy

Many brands attempt checkout optimisation without addressing fulfilment capability, but true checkout optimisation requires operational alignment across several areas:  

• Fulfilment network capacity
• Carrier performance
• Inventory positioning
• Cut-off time configuration
• Cross-border shipping capability
• Returns processing infrastructure

Your fulfilment strategy determines whether you can credibly offer next-day delivery, late cut-off times or accurate delivery date promises. If fulfilment can't support the delivery proposition shown at checkout, customer trust erodes and repeat purchase declines.  

Payment friction and cross-border complexity

Payment flexibility materially affects ecommerce conversion rates.

Localised payment methods, including digital wallets and Buy Now Pay Later, reduce friction, particularly in international ecommerce. Without preferred options, customers abandon rather than adapt.

This directly impacts:

• Conversion rate by market
• International expansion performance
• Revenue efficiency

Reducing payment friction improves return on marketing investment and strengthens capital efficiency. 

How does THG Fulfil align checkout and fulfilment?

At THG Fulfil, we integrate localised checkout technology with an automated fulfilment network, enabling brands to present delivery promises that can be consistently met.

Checkout by THG Fulfil

Designed to support international ecommerce growth:

• 60+ payment providers
• 30 languages
• 200 global markets
• Localised checkout experiences
• Integrated fraud management
• Flexible ecommerce delivery options

This reduces payment friction, supports cross-border ecommerce and improves checkout conversion rates.

Conversion is only the first step, orders must then be processed, picked and dispatched at scale. This is where our automated fulfilment network comes in.

Our Automated Fulfilment Network

We operate a multi-site fulfilment network including highly automated facilities and robotics partnerships. This enables:

• Faster pick, pack and dispatch
• Reduced order cut-off times
• Reliable next-day delivery
• Consistent global delivery performance

Automated fulfilment improves speed, accuracy and cost control, supporting both ecommerce conversion rates and operational efficiency. 

The commercial impact of checkout and fulfilment optimisation

When ecommerce checkout optimisation and fulfilment strategy operate together, the results have a measurable impact on the business.  

Brands can reduce cart abandonment by removing payment and delivery friction. Conversion rates increase as customers gain confidence in delivery promises. Average order value often rises when flexible delivery options are clearly presented. Reliable order tracking and consistent performance strengthen retention and increase customer lifetime value.

In a margin-sensitive ecommerce environment, checkout and fulfilment cannot be optimised separately, they form part of the same commercial system, delivering on a clear business priority: converting more of the demand brands already generate, while protecting margins and operational resilience.

To find out more about improving forecasting accuracy and cost- to-serve across end-to-end fulfilment read our eguide - Checkout & Fulfilment. Your Biggest Growth Levers for 2026.