B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Recent
6.3%
6.3% -- checkout completion decline per 10pct shipping fee increase for desktop checkout sessions (2025)
Every 10% increase in shipping fees as a percentage of order value leads to a 6.3 percentage point decline in desktop checkout completion.
Attribution:
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Lighthouse Research Team
Last verified:
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Source verified
Evidence graded
Value
6.3%
Unit
Percentage
Data Vintage
2025
Entity
Sample Size
3,000,000
Evidence Quality
B
Strong, reliable evidence
Sourced from a well-regarded research firm or industry leader with transparent methodology and a reasonably large sample.
Single source - not yet corroborated
Score breakdown
Extraction
75
Source Trust
60
Citation Chain
20
Independence
30
Methodology
45
Freshness
95
Source
Bold Commerce
Primary
Tier B
https://kirro.io/checkout-optimization ↗
Source Article
Checkout Optimization: 9 Strategies That Actually Work
Checkout optimization is about removing friction between “add to cart” and “order confirmed.” It’s one of the highest-impact things you can do for an online store. Baymard Institute found that the average large ecommerce site can gain 35% more conversions through checkout design improvements alone. …
Original Research
Bold Commerce
· Original study ↗
Methodology
Bold Commerce analysis of 3 million checkout sessions
Methodology documented
Segmentation
Industrymarketing
Cite this stat
Plain Text
desktop checkout sessions: 6.3% checkout completion decline per 10pct shipping fee increase. Source: Bold Commerce (2025). Via Lighthouse Intelligence -- https://lighthousedata.io/data/shipping-fee-increase-completion-drop-6-3
HTML Embed
<blockquote cite="https://lighthousedata.io/data/shipping-fee-increase-completion-drop-6-3" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>6.3%</strong> -- checkout completion decline per 10pct shipping fee increase for desktop checkout sessions<br><small>Source: Bold Commerce (2025) · <a href="https://lighthousedata.io/data/shipping-fee-increase-completion-drop-6-3" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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