eCommerce Checkout Optimization: Why Buyers Leave and What to Fix

Your checkout page is where revenue is won or lost. With the average cart abandonment rate at 70.22% across 50 studies tracked by the Baymard Institute, the vast majority of shoppers who add products to their carts never complete a purchase.

But here’s the opportunity: Baymard Institute’s research estimates that the average large ecommerce site can gain a 35.26% increase in conversion rate through better checkout design, which it puts at $260 billion in recoverable orders across the US and EU.

This guide is a tactical, data-backed playbook for optimizing every element of your eCommerce checkout, from form fields and payment methods to trust signals and post-purchase flows. Whether you’re running a Shopify store or a custom WooCommerce build, every recommendation here is immediately actionable and backed by current research.

Table of Contents

1. The Checkout Abandonment Crisis: Understanding the Numbers
2. The Anatomy of a High-Converting Checkout
3. One-Page vs Multi-Step Checkout: The Data Behind the Decision
4. Form Optimization: Reducing Friction Field by Field
5. Payment Optimization: Give Customers How They Want to Pay
6. Trust & Security Signals That Convert
7. Guest Checkout vs Account Creation
8. Mobile Checkout: Special Considerations
9. Shipping & Pricing Transparency
10. Post-Checkout Optimization
11. Testing Your Checkout: A/B Test Ideas with Highest ROI
12. Frequently Asked Questions
13. Conclusion

1. The Checkout Abandonment Crisis: Understanding the Numbers

The scale of checkout abandonment is staggering. and it represents one of the largest untapped revenue opportunities in eCommerce. As part of a comprehensive CRO strategy, checkout optimization is the single most direct lever for revenue impact.

The Baymard Institute’s 2026 meta-analysis - the industry’s most authoritative source, puts the average cart abandonment rate at 70.22% based on 50 different studies. That means roughly 7 out of every 10 shoppers who add an item to their cart leave without completing the purchase.

Abandonment by Device

The problem is dramatically worse on mobile and tablet:

Sources: Baymard Institute, Dynamic Yield, Statista

With mobile now driving over 72% of eCommerce traffic but converting at less than half the desktop rate, the mobile checkout experience represents the single largest conversion gap for most stores. For a deep dive on mobile-specific optimization, see our guide on mobile checkout best practices.

Why Shoppers Abandon at Checkout

The Baymard Institute’s research identifies the top reasons for checkout abandonment, and almost all of them are fixable:

Source: Baymard Institute

The critical insight here is that the top five reasons - accounting for the majority of all abandonments, are entirely within your control.

Unexpected costs, forced account creation, security concerns, and checkout complexity are all UX and design problems, not customer intent problems. For broader cart abandonment recovery strategies beyond checkout UX, see our dedicated guide.

2. The Anatomy of a High-Converting Checkout

A high-converting checkout isn’t about flashy design - it’s about removing every unnecessary barrier between a customer’s intent to buy and their completed purchase. Here’s a visual blueprint of the key elements, drawing from the product page to checkout flow that top-performing stores use.

Progress Indicators

Showing customers where they are in the checkout process (e.g., “Step 2 of 3”) reduces anxiety and sets expectations. Baymard Institute’s usability research across 100+ studies consistently shows that progress bars reduce checkout abandonment - customers are less likely to leave when they can see the finish line.

Clear Pricing at Every Stage

Total order cost, including shipping, taxes, and any fees - should be visible from the moment a customer enters checkout. Since 48% of abandonments stem from unexpected costs, price transparency is non-negotiable.

Minimal Form Fields

The average eCommerce checkout contains 11.3 form elements by default, while the optimal number is 7-8 fields. Completion rates drop 4-6% for every field beyond the eighth. Every field you remove is a friction point eliminated.

Express Payment Options

One-tap wallet buttons should be prominently displayed above the fold. Stores that offer them tend to convert more of their visitors (source).

Trust Signals at Key Decision Points

SSL badges, payment processor logos, and money-back guarantee messaging should appear near the CTA button and payment fields - the exact moments when security anxiety peaks.

Before/After Framework

When we review a checkout, we count three things first: the form fields, the steps, and how far the trust signals sit from the button that asks for payment. An unoptimized checkout usually asks for more fields across more steps and leaves its trust signals in the footer; an optimized one asks only for what the order needs and puts reassurance next to the point of commitment. We then measure completion rate by step, before and after each change.

For personalized checkout flows that dynamically adapt to individual shoppers, AI-driven personalization can take these principles even further.

Checkout optimization is one component of a broader conversion strategy. For the full picture, see our guide to ecommerce conversion rate optimization: 15 proven strategies.

3. One-Page vs Multi-Step Checkout: The Data Behind the Decision

This is one of the most debated questions in eCommerce UX, and the answer depends on your specific business context. Here’s what the data says.

When One-Page Checkout Wins

One-page checkouts display all fields - shipping, payment, and order review, on a single screen. Research shows they outperform multi-step flows in specific scenarios. Shopify’s own testing supports the one-page approach, their default checkout was redesigned to a single-page format specifically because their data showed it consistently outperformed multi-step flows for the majority of merchants. Baymard Institute’s checkout benchmarks confirm that reducing perceived complexity is the key factor driving higher completion rates.

One-page checkout tends to win when your products are straightforward with low complexity, your average order value is under $150, mobile traffic makes up 70%+ of your visitors, and most customers are buying 1-3 items.

When Multi-Step Checkout Wins

Multi-step checkouts break the process into discrete stages (e.g., Shipping → Payment → Review). They tend to outperform when order complexity is high (B2B, configurable products, multiple shipping addresses), average order value exceeds $200 - customers want reassurance at higher price points, the checkout requires information gathering beyond basic shipping and payment, and you need to collect business tax IDs, purchase orders, or special instructions.

An important finding from Baymard Institute research: perceived field count matters more than actual count. A 15-field form split across three logical steps outperforms a 10-field form on one page by 11-14% in completion rate. When fields are grouped logically, customers perceive the process as simpler even when it technically contains more elements.

The Hybrid Approach

The most effective modern checkouts are often a hybrid. Shopify’s one-page checkout (introduced in late 2023 and now standard) uses accordion-style sections that collapse completed steps, combining the visual simplicity of a single page with the logical grouping of multi-step. The average eCommerce site has 39 potential areas for checkout improvement, meaning there’s almost certainly room to optimize regardless of which format you use.

4. Form Optimization: Reducing Friction Field by Field

Form fields are where the rubber meets the road in checkout optimization. Every field is a potential friction point, and the data is clear: reducing form fields from 12 to 7-8 can increase conversions by 25-35%. Here’s how to approach field reduction systematically.

Auto-Fill and Address Validation

Implement browser auto-fill support and address auto-complete. This single change shortens checkout noticeably, particularly on mobile where typing is slow and error-prone. Use zip code to auto-populate city and state, eliminating two fields instantly.

Smart Defaults

Pre-select the most common options: default to the customer’s country based on IP geolocation, pre-check “shipping address same as billing” (true for most orders), and default to the most popular shipping method.

Inline Validation

Don’t wait until the customer clicks “Submit” to reveal errors. Validate each field in real-time as the customer completes it.

In Luke Wroblewski’s 2009 inline validation study for A List Apart, the best-performing version cut errors made by 22% and raised success rates by 22%, and validating after the user leaves a field worked better than showing errors while or before they type. Inline validation catches mistakes immediately and prevents the frustration of having to re-scan an entire form.

Field-by-Field Recommendations

Here’s what to keep, combine, and remove:

Keep (essential): Full name (single field - don’t split first/last), email address, shipping address (with auto-complete), payment information, phone number (for shipping notifications only).

Combine: First name + last name → single “Full name” field. City + state → auto-populated from zip code.

Remove or make optional: Company name (unless B2B), second address line (show only if needed via “Add apartment/suite” link), phone number as a separate billing field, coupon code field (hide behind a toggle - visible coupon fields cause customers to leave and search for codes, increasing abandonment).

Pro Tip: The coupon code field deserves special attention. A prominently displayed empty coupon field sends some shoppers off to search for a discount code, and some of them never return. Hide it behind a “Have a promo code?” link to prevent this leakage.

Checkout optimization is one of the highest-ROI conversion levers available. Our conversion optimization team helps brands systematically reduce friction and increase completion rates. Explore our Conversion Optimization approach →

5. Payment Optimization: Give Customers How They Want to Pay

Payment friction is a leading cause of checkout abandonment, with 13% of shoppers abandoning specifically because their preferred payment method isn’t available. In 2026, customer expectations around payment options have evolved dramatically.

Digital Wallets: The New Standard

Digital wallets are no longer optional, they’re the dominant payment method in global eCommerce. In 2025, digital wallets accounted for 49-56% of global eCommerce transaction value, and 65% of US adults now use a digital wallet . By 2030, digital wallets are projected to represent 52% of all US online transactions.

The conversion impact is significant. Testing published by a large payment processor across dozens of payment methods found that stores offering one-tap wallet payments converted more visitors and earned more revenue than stores without them, largely because a wallet replaces a long form with a handful of taps (source).

Express Checkout Placement

Express payment buttons (Apple Pay, Google Pay, Shop Pay) should appear above the fold on both the cart page and the checkout page. Placing express checkout early in the flow, rather than at the end, lets returning wallet users skip the form entirely. Display order matters: show the most popular payment method in your region first.

BNPL (Buy Now, Pay) Integration

Buy Now, Pay Later has evolved from a niche feature to a checkout expectation, with the global BNPL market projected to surpass $560 billion. The conversion impact is measurable: according to Stripe’s testing across 150,000+ checkout sessions, businesses saw up to a 14% increase in revenue when BNPL was offered, with more than two-thirds of BNPL volume coming from net-new sales.

Merchants consistently report AOV increases of 20-50% after implementing BNPL , particularly for higher-ticket categories.

Display BNPL pricing prominently on product pages (“or 4 payments of $25”) - not just at checkout. Offer at least one major provider (Klarna, Afterpay, or Affirm) and make the terms crystal clear. For a deeper look at how BNPL drives increased average order value at checkout, see our AOV guide.

Payment Method Display Order

Test the order in which payment methods appear. In general, prioritize express options (Apple Pay, Google Pay) at the top, followed by credit/debit cards, then BNPL, then alternative methods (PayPal, bank transfers). For region-specific stores, prioritize local payment methods - iDEAL in the Netherlands, Bancontact in Belgium, PIX in Brazil.

6. Trust & Security Signals That Convert

Security concerns cause 25% of all checkout abandonments. Baymard’s checkout usability study found that 19% of users abandoned a checkout in the past 3 months specifically because they didn’t trust the site with their credit card information. At the checkout page, the exact moment customers are asked to hand over their payment details - trust is everything.

SSL and Security Badges

Display SSL certificates and secure payment badges prominently near the payment form and the “Place Order” button. Baymard Institute research shows that 18% of users explicitly look for security indicators before entering credit card information, and that security badges near payment fields can increase conversion by 15-30% for less-known brands. CXL’s original research study on trust seals confirms that badge placement at the payment form, not above the fold or in the footer, is what drives measurable impact.

Money-Back Guarantees

A clearly stated money-back guarantee near the CTA button reduces perceived risk. This is particularly effective for first-time customers and higher-priced items. The language should be specific - “30-day full refund, no questions asked” converts better than a vague “satisfaction guaranteed.”

Trust Seals from Recognized Providers

Payment processor logos (Visa, Mastercard, PayPal) and security seals (Norton, McAfee Secure) serve as shorthand for credibility. CXL’s research found that the most recognized trust badges are McAfee (79%), Verisign (76%), and PayPal (72%), with PayPal perceived as the most secure overall (63% of respondents). Strategic placement near the checkout CTA is critical.

Social Proof at Checkout

Integrating lightweight social proof at checkout, such as “12,450 orders shipped this month” or a Trustpilot rating badge - reinforces credibility at the moment of maximum hesitation. Keep it subtle. the checkout page is not the place for intrusive popups or lengthy testimonials.

Clear Return Policy

Link to your return policy directly on the checkout page, ideally near the CTA. A visible, generous return policy (30+ days) consistently correlates with higher completion rates because it reverses the perceived risk. Customers think: “If it’s easy to return, I’m safe to buy.”

7. Guest Checkout vs Account Creation

Forced account creation is the second-highest cause of checkout abandonment, with 26% of shoppers leaving specifically because they were required to create an account . Baymard’s usability studies consistently show that a significant majority of shoppers will abandon a cart entirely if guest checkout is not offered as a prominent option.

Guest Checkout Is Non-Negotiable

Every eCommerce store should offer guest checkout as the default option. The conversion impact is significant: enabling prominent guest checkout typically produces a significant improvement in checkout conversion, while requiring account creation before purchase is a leading cause of abandonment.

The Smart Compromise: Post-Purchase Account Creation

The most effective approach is to let customers complete their purchase as a guest, then offer account creation on the confirmation page. At this point, you already have their name, email, and shipping address, creating an account requires only setting a password. Frame it as a benefit: “Create an account to track your order and get 10% off your next purchase.”

Social Login as a Middle Ground

Offering “Sign in with Google” or “Sign in with Apple” dramatically reduces the friction of account creation by eliminating the need to create and remember yet another password. Position social login alongside, not instead of - guest checkout.

Progressive Profiling

Rather than asking for all customer data upfront, collect information gradually across multiple interactions. First purchase: email + shipping. Second visit: birthday (for a discount). Third visit: preferences (for personalization). This approach respects the customer’s time while building increasingly rich profiles over the long term - directly contributing to customer lifetime value.

Mobile Discovery Problem

Even when guest checkout exists, it’s often hard to find on mobile. Baymard Institute’s mobile usability research shows that guest checkout is often buried or difficult to locate on mobile devices, leading to unnecessary abandonment. Make “Checkout as Guest” the most visually prominent option, larger button, higher placement, primary color, and relegate “Sign In” or “Create Account” to secondary positioning.

8. Mobile Checkout: Special Considerations

Mobile drives 72% of eCommerce traffic but suffers from abandonment rates as high as 80-85% compared to desktop’s 66-70%. This gap represents an enormous revenue opportunity, and the checkout experience is where mobile struggles most. For a complete mobile commerce strategy, see our dedicated mobile checkout best practices guide.

Touch-Friendly Inputs

Every interactive element - buttons, form fields, dropdown menus, must be designed for thumb navigation. The W3C’s accessibility guidelines set 44 by 44 CSS pixels as the enhanced minimum target size (WCAG 2.2, criterion 2.5.5), so use at least that, with adequate spacing between elements to prevent mis-taps. Use large, full-width buttons for primary actions like “Continue” and “Place Order.”

Digital Wallet Priority

On mobile, digital wallets should be the hero of your checkout. The traditional credit card form - typing 16 digits, expiry date, and CVV on a small screen, is the single biggest source of mobile checkout friction.

Apple Pay and Google Pay reduce the entire payment process to a single biometric authentication, and Stripe’s research shows a 2x increase in mobile conversion rates when express checkout is offered early in the flow.

One-Tap Checkout

For returning customers, enable one-tap purchasing using saved payment methods and shipping addresses. Shop Pay, Amazon Pay, and platform-native saved payment flows all contribute to reducing mobile checkout to a single confirmation.

Minimal Scrolling

Mobile checkout should require as little scrolling as possible. Use collapsible sections, keep the “Place Order” button sticky at the bottom of the screen, and consolidate form fields aggressively. Every scroll is an opportunity for the customer to reconsider.

Mobile-Specific Trust Signals

Trust badges must be immediately visible without scrolling on mobile. Don’t relegate them to the footer where they’ll never be seen. Place security indicators near the payment fields and the CTA button within the initial viewport.

Mobile checkout demands its own optimization approach. For a comprehensive look at the mobile conversion gap and how to close it, read our guide to mobile commerce optimization.

9. Shipping & Pricing Transparency

Unexpected costs are the #1 reason shoppers abandon their carts, with 48% of all abandonments attributed to extra shipping fees, taxes, and surcharges that appear late in the checkout flow.

Capital One Shopping’s 2025 free shipping research found that 80% of American shoppers expect free shipping above a certain threshold, and 66% expect free shipping on all orders - with 62% saying they won’t even consider a retailer that doesn’t offer it.

Show All Costs Early

Display a shipping cost estimator on the cart page - before customers even enter checkout. Showing taxes and fees upfront eliminates the sticker shock that causes nearly half of all abandonments. If exact shipping costs require an address, show a range based on the customer’s detected region.

Free Shipping Thresholds

Free shipping thresholds are one of the most powerful conversion and AOV levers available. Capital One Shopping’s research shows that 93% of consumers actively shop to qualify for free shipping, with 58% adding items to their cart specifically to meet the threshold, resulting in an average 30% increase in order value. Set your threshold 20-30% above your current average order value, and use progress bar notifications (“You’re $12 away from free shipping!”) to motivate upsells.

Shipping threshold notifications reduce cart abandonment by 15-23% and simultaneously increase average order value. It’s one of the rare optimizations that improves both conversion rate and revenue per transaction.

All-Inclusive Pricing

Where legally possible, consider displaying prices that include shipping. While this works better in some regions than others (common in the UK and EU, less so in the US), the psychological impact of “what you see is what you pay” eliminates the single biggest source of checkout friction.

Transparent Tax Display

For US-based stores where tax varies by state, show estimated tax as early as possible. Display a note explaining that final tax will be calculated at checkout based on the shipping address. International stores should clearly indicate whether displayed prices include VAT/GST.

10. Post-Checkout Optimization

The moment a customer completes a purchase is one of the most underutilized conversion opportunities in eCommerce. The customer has just demonstrated maximum trust and engagement - and most stores waste this moment with a generic “Thank you for your order” page.

Confirmation Page Upsells

Post-purchase upsells on the confirmation page convert at 3-8% acceptance rates on average, with well-optimized one-click offers reaching significantly higher (Shopify). The key is relevance: offer complementary products, not random cross-sells. A customer who just bought running shoes should see performance socks or a shoe care kit -not a random discount on a different category.

Use one-click upsells that don’t require re-entering payment information. The lower the friction, the higher the take rate. Shopify’s research on post-purchase upsells confirms that one-click offers dramatically outperform traditional redirect-based upsells because stored payment credentials eliminate re-entry friction entirely.

Order Tracking and Communication

Proactive order tracking is a trust-building exercise. Send shipping confirmation with tracking as soon as the order ships. Provide real-time delivery updates via email or SMS. Include a branded tracking page rather than redirecting to a carrier’s generic page. Each touchpoint reinforces the customer relationship and builds anticipation for the product.

Post-Purchase Email Sequence

A well-structured post-purchase email sequence turns a one-time buyer into a repeat customer. For more on building these automated post-purchase workflows, see our eCommerce automation guide.

The recommended sequence:

Day 1 - order confirmation with tracking and product care tips.
Day 3 to 5 - product usage ideas and complementary content.
Day 7 to 14 - review request (incentivize with a small discount on next order).
Day 21 to 30 - personalized cross-sell recommendation based on purchase.
Day 30 to 60 - loyalty program invitation or referral program.

This sequence doesn’t just optimize for the current transaction - it fuels long-term revenue growth through conversion and repeat purchase behavior.

11. Testing Your Checkout: A/B Test Ideas with Highest ROI

Checkout optimization without testing is guesswork. A structured testing program ensures your changes are actually driving improvement, not just moving metrics around. For a complete framework on checkout A/B testing, see our dedicated guide.

Top Checkout A/B Tests, in the Order We Usually Run Them

These are the checkout tests we usually run first, ordered by how much evidence supports them and how quickly they can be shipped. Your own results decide what stays:

1. Express Checkout Buttons. Test adding Apple Pay / Google Pay / Shop Pay buttons above the fold on your cart and checkout pages. Adding express checkout options like PayPal, Apple Pay, and Google Pay consistently produces conversion lifts of 22-37% according to Stripe’s research.

2. Guest Checkout as Default. Switch from login-first to guest-first checkout. Test the visual hierarchy - make “Checkout as Guest” the primary CTA and “Sign In” secondary.

3. Form Field Reduction. Remove non-essential fields and combine redundant ones. Test 7 fields versus your current count. Every additional field beyond 8 costs 4-6% in completion rate.

4. Shipping Cost Visibility. Test showing estimated shipping costs on the cart page versus revealing them at checkout. Test free shipping thresholds at different levels above your current AOV.

5. Trust Signal Placement. Test adding security badges near the payment form and CTA button versus in the footer. Test specific badge types (SSL lock, Norton seal, payment logos) against each other.

6. Progress Indicators. Test adding a progress bar (“Step 2 of 3”) versus no progress indicator. Test numbered steps versus a graphical progress bar.

7. Mobile-Specific Checkout. Test a mobile-optimized checkout that prioritizes digital wallets and reduces form fields versus your current responsive design. Baymard Institute’s mobile checkout research consistently shows that mobile-optimized checkout flows significantly outperform responsive desktop-adapted designs.

Test Priority Matrix

Prioritize tests using the ICE framework: Impact (how much revenue could this affect?), Confidence (how strong is the evidence?), Ease (how quickly can we implement and test?). Start with tests that score high on all three dimensions, express checkout buttons and guest checkout as default are almost always the right first tests.

Ensure statistical significance before drawing conclusions, target 95% confidence with a minimum of 100 conversions per variation. Don’t end tests early on promising results, and always account for day-of-week and seasonal variations.

What conversion optimization looks like as a service

Most of what this guide describes is work, not advice: research on where buyers hesitate, a prioritised list of fixes, tests run one at a time, and a monthly read of what moved revenue. A company of 10 to 200 people rarely has someone free to own it, which is why it usually stalls after the first quick wins. At Growth Engines conversion is one practice inside the growth department, run by the same owner who runs traffic and offer, so the three are improved together and measured against margin. How we work on conversion describes the engagement, and the Growth Snapshot’s leak check is the free first look at where your store loses buyers.

Frequently Asked Questions

Is one-page checkout or multi-step checkout better for eCommerce?

There’s no universal answer - it depends on your products, AOV, and customer base. Data shows one-page checkout tends to convert better for stores with simple products and AOVs under $150, particularly on mobile, which is why Shopify moved to a single-page checkout as its default. Multi-step checkout tends to outperform for complex or high-value orders where customers need reassurance at each stage. The most important factor is the total number of form fields and perceived complexity, not the number of pages. Test both formats with your specific audience.

How much does guest checkout improve conversion rates?

Guest checkout has a significant impact. 26% of all checkout abandonments are caused by forced account creation. Baymard’s checkout usability research consistently shows that stores implementing prominent guest checkout see substantial improvements in checkout completion rates. The best approach is offering guest checkout as the default, then prompting account creation post-purchase.

How do I set up digital wallets (Apple Pay, Google Pay) on my store?

Most major eCommerce platforms make digital wallet integration straightforward. On Shopify, Apple Pay and Google Pay are available through Shopify Payments, enable them in your payment settings. WooCommerce supports them through Stripe’s payment gateway plugin. For custom platforms, Stripe and Braintree both offer drop-in express checkout components. The key is displaying express checkout buttons early and prominently, not buried at the bottom of a form.

How can I customize the Shopify checkout for better conversions?

Shopify’s checkout customization options have expanded significantly since the introduction of Checkout Extensibility. You can add trust badges, customize form fields, implement post-purchase upsells, and modify the layout through Shopify Functions and checkout UI extensions. For Shopify Plus merchants, full checkout.liquid customization is available. Start with the highest-impact changes: enable guest checkout, add express payment buttons above the fold, reduce form fields, and add trust signals near the CTA.

What’s the best way to reduce unexpected costs at checkout?

Unexpected costs cause 48% of all cart abandonments (Baymard Institute). The most effective solutions are: display a shipping cost estimator on the cart page before checkout, offer free shipping above a clear threshold (set 20-30% above your current AOV), show all-inclusive pricing where possible, and display tax estimates early. Shipping threshold progress bars (“You’re $12 away from free shipping!”) give shoppers a reason to add to the order instead of leaving; test the threshold level against your own AOV.

How do trust badges affect checkout conversion rates?

Trust badges have a substantial impact on conversion. Baymard Institute’s research on perceived security shows that 18% of users actively look for security indicators before entering payment details, and badges near the payment form increase conversion by 15-30% for less-familiar brands. CXL’s original research found that McAfee (79%), Verisign (76%), and PayPal (72%) are the most recognized trust badges. Placement matters, position them near the payment form and “Place Order” button, not buried in the footer.

What are the highest-ROI checkout A/B tests I should run first?

Start with the tests that have the strongest evidence base and easiest implementation: (1) add express checkout buttons (Apple Pay, Google Pay) above the fold; (2) make guest checkout the default option; (3) remove every form field the order does not need; (4) show shipping costs on the cart page. Each is a contained change that can be tested on its own, and together they cover the most common reasons buyers leave at checkout.

What are the most common checkout usability issues?

The same six show up in almost every checkout review: forced account creation before payment, forms with more than eight fields, shipping and tax revealed only on the last step, a single payment method, missing trust signals near the pay button, and a mobile checkout that breaks on small screens. Together they explain most of the roughly 70% average abandonment rate that the Baymard Institute documents across 50 studies.

How do you run checkout usability research?

Start with a handful of recorded sessions of real customers buying on their own device, then read the step-by-step drop-off in analytics, and rank every issue by the revenue it costs. A handful of sessions surface most problems; a second round after fixes confirms the gain. Surveys of abandoners add the reasons the recordings cannot show.

Does mobile checkout need separate research?

Yes. Most eCommerce traffic now arrives on phones, and mobile usability problems differ: keyboard types, autofill, tap targets and wallet payments. Test the mobile flow on real phones, not a resized browser window.

Conclusion: Your Checkout Is Your Revenue Engine

Every element of your checkout, from the number of form fields to the placement of trust badges, directly impacts whether a customer completes their purchase or joins the 70% who abandon.

The data is unequivocal: better checkout design can raise the conversion rate of a large ecommerce site by as much as 35.26%, according to Baymard Institute, and the compound effect of multiple improvements can be transformational.

Your action plan:

1. Audit your current checkout - count your form fields, map your friction points, and benchmark your abandonment rate by device
2. Implement the quick wins - enable guest checkout, add express payment options, and display all costs upfront
3. Optimize for mobile - prioritize digital wallets, minimize form fields, and ensure touch-friendly design
4. Build trust at every step - add security badges near payment fields, display your return policy, and include social proof
5. Test everything - use A/B testing to validate changes and compound incremental improvements over time

The difference between an unoptimized and an optimized checkout isn’t just a few percentage points, it’s the difference between leaving money on the table and capturing the revenue your traffic already generates.

Every day without checkout optimization is lost revenue. Ready to recover the conversions you’re leaving on the table? Explore our conversion optimization services or contact Growth Engines for a checkout review and an implementation roadmap for your store.

Related Reading:

• eCommerce Conversion Rate Optimization: The Complete 2026 Guide
• Cart Abandonment Recovery Strategies
• How to Increase Average Order Value
• Customer Lifetime Value Strategies
• Product Page Optimization Best Practices
• eCommerce Automation Guide
• eCommerce Revenue Growth Strategy
• Mobile Commerce Optimization
• eCommerce A/B Testing Guide
• eCommerce Personalization Strategies

Eran Regev( Founder & CEO, Growth Engines )

Eran Regev is the founder of Growth Engines and the accountable owner behind every engagement. For more than sixteen years he has run growth for companies that do not have a marketing department of their own: strategy, execution and AI systems under one owner, from Israeli industrial exporters to eCommerce brands scaling into the US and Europe. He holds an MBA in behavioral economics and writes about answer engine optimization, performance marketing and the economics of growth.