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Checkout A/B Test Results

Checkout flow experiments including objection handling, form optimization, and payment flow improvements.

36
Experiments
8%
Win rate
3
Winners found

Key Findings: Checkout A/B Tests

Across 36 checkout experiments, 8% resulted in a statistically significant win.

33 experiments were inconclusive, meaning the difference between control and variant was not statistically significant. Inconclusive results are still valuable — they tell you what doesn't move the needle, so you can focus testing effort elsewhere.

These results come from real A/B tests with sample sizes ranging from hundreds to millions of visitors. Use them to inform your own checkout testing strategy and avoid repeating experiments that have already been run.

Outcome Breakdown

Top 30 of 36 Experiments

winner

Does Pinning a Mobile Checkout CTA Improve Conversion?

Sticky mobile CTAs can compress time-on-page meaningfully (~15% faster) without sacrificing engagement signals — users converted at a directionally higher rate AND moved through the page faster, suggesting reduced hesitation rather than rushed clicks. The result was shipped via 90/10 holdout monitoring rather than traditional 50/50 A/B inference — the high baseline (~85%) and limited mobile traffic made full A/B underpowered, so the team chose a holdout-validated rollout as the deliberate methodology. Bayesian P(variant > control) was ~0.90, supporting the directional ship call. Worth noting: external research flags sticky CTAs as context-dependent — they help when the primary action is buried below the fold, but can hurt on shorter pages where the original CTA is already visible.

CTAEnergy & Utilities
winner

Checkout: Remove Coupon Fields

Problem: Coupon and promo code fields on checkouts can distract users — they leave to hunt for codes, reducing completion rates.

FormCross-Industry
inconclusive

Checkout: Fewer Form Fields

Context: Each additional form field adds friction to the checkout, increasing the chance users abandon before completing their submission.

FormCross-Industry
inconclusive

Checkout: Testimonials

Context: Users on the checkout need validation from others before committing — without visible proof of success, they hesitate.

Social ProofCross-Industry
inconclusive

Checkout: Top Aligned Labels

Context: Friction during the checkout process causes users to abandon right when they're closest to converting.

FormCross-Industry
inconclusive

Checkout: Customer Star Ratings

Context: Users on the checkout need validation from others before committing — without visible proof of success, they hesitate.

Social ProofCross-Industry
inconclusive

Checkout: Centered Forms & Buttons

Context: The primary call-to-action on the checkout isn't converting at its potential — design, copy, or placement may be the bottleneck.

FormCross-Industry
inconclusive

Checkout: Bulleted Reassurances

Context: Friction during the checkout process causes users to abandon right when they're closest to converting.

TrustCross-Industry
inconclusive

Checkout: Easiest Fields First

Context: Friction during the checkout process causes users to abandon right when they're closest to converting.

FormCross-Industry
inconclusive

Checkout: Floating Labels

Context: Key actions on the checkout disappear as users scroll, creating a gap between intent and the ability to act.

FormCross-Industry
inconclusive

Checkout: Countdown Timer

Context: Without clear urgency signals, users delay their decision on the checkout, leading to drop-offs and abandoned sessions.

Social ProofCross-Industry
inconclusive

Checkout: Benefit Bar

Context: Friction during the checkout process causes users to abandon right when they're closest to converting.

Copy & MessagingCross-Industry
inconclusive

Checkout: Checkout Flow Simplification

Context: Friction during the checkout process causes users to abandon right when they're closest to converting.

PricingCross-Industry
inconclusive

Checkout: Above The Fold Call To Action

Context: The first screen of the checkout must immediately communicate value — if it doesn't, users bounce before scrolling.

CTACross-Industry
inconclusive

Checkout: Urgent Next Day Delivery

Context: Friction during the checkout process causes users to abandon right when they're closest to converting.

LayoutCross-Industry
inconclusive

Checkout: Trust Seals

Context: Friction during the checkout process causes users to abandon right when they're closest to converting.

Social ProofCross-Industry
inconclusive

Checkout: Checkout Flow Simplification

Context: Friction during the checkout process causes users to abandon right when they're closest to converting.

LayoutCross-Industry
inconclusive

Checkout: Add More For Extra Incentive

Context: Friction during the checkout process causes users to abandon right when they're closest to converting.

LayoutCross-Industry
inconclusive

Checkout: Complementary Upsell

Context: Friction during the checkout process causes users to abandon right when they're closest to converting.

LayoutCross-Industry
inconclusive

Checkout: Currency & Taxes

Context: Friction during the checkout process causes users to abandon right when they're closest to converting.

PricingCross-Industry
inconclusive

Checkout: Autodiscounting

Context: Coupon and promo code fields on checkouts can distract users — they leave to hunt for codes, reducing completion rates.

PricingCross-Industry
winner

Checkout: Filled Or Ghost Buttons

Problem: The primary call-to-action on the checkout isn't converting at its potential — design, copy, or placement may be the bottleneck.

CTACross-Industry
inconclusive

Checkout: Tags, Badges And Structured Information

Context: How prices are displayed on the checkout directly influences perceived value and willingness to buy.

FormCross-Industry
inconclusive

Checkout: No Commitment Default

Context: Friction during the checkout process causes users to abandon right when they're closest to converting.

CTACross-Industry
inconclusive

Checkout: Auto Suggest

Context: Friction during the checkout process causes users to abandon right when they're closest to converting.

LayoutCross-Industry
inconclusive

Checkout: Progress Bar

Context: Friction during the checkout process causes users to abandon right when they're closest to converting.

LayoutCross-Industry
inconclusive

Checkout: Money Back Guarantee

Context: Friction during the checkout process causes users to abandon right when they're closest to converting.

TrustCross-Industry
inconclusive

Checkout: Back Buttons

Context: The primary call-to-action on the checkout isn't converting at its potential — design, copy, or placement may be the bottleneck.

CTACross-Industry
inconclusive

Checkout: Frequently Asked Questions

Context: Friction during the checkout process causes users to abandon right when they're closest to converting.

LayoutCross-Industry
inconclusive

Checkout: Field Explanations

Context: Friction during the checkout process causes users to abandon right when they're closest to converting.

FormCross-Industry

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