B
Evidence Grade B
Graded
under review
Safe to Cite
Current
40%
40% -- sales cost reduction for Inside sales (2026)
Attribution:
View source
Lighthouse Research Team
Last verified:
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Source verified
Evidence graded
Value
40%
Unit
Percentage
Data Vintage
2026
Entity
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
50
Source Trust
60
Citation Chain
20
Independence
30
Methodology
45
Freshness
95
Source
Harvard Business Review
Primary
Tier C
https://www.b2bsell.com/inside-sales/ ↗
Source Article
Inside Sales
Original Research
Harvard Business Review
· Original study ↗
Methodology
Range reported (40%-90%); midpoint used. Attributed to Harvard Business Review.
Methodology documented
Segmentation
Industrymarketing
Cite this stat
Plain Text
Inside sales: 40% sales cost reduction. Source: Harvard Business Review (2026). Via Lighthouse Intelligence -- https://lighthousedata.io/data/inside-sales-cost-reduction-hbr
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<blockquote cite="https://lighthousedata.io/data/inside-sales-cost-reduction-hbr" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>40%</strong> -- sales cost reduction for Inside sales<br><small>Source: Harvard Business Review (2026) · <a href="https://lighthousedata.io/data/inside-sales-cost-reduction-hbr" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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