B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Current
36%
36% -- return on investment for PPC/SEM ads (2026)
PPC/SEM advertising delivers a 36% 3-year return on investment.
Attribution:
View source
Lighthouse Research Team
Last verified:
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Source verified
Evidence graded
Value
36%
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
Prospeo.io
Primary
Tier C
https://ascendlymarketing.com/seo-lead-generation/ ↗
Source Article
Mastering SEO Lead Generation: How to Attract and Convert Prospects
Original Research
Prospeo.io
· Original study ↗
Methodology
Reported in the Digital Marketing Channel Performance Comparison table; figures cited to Prospeo.io lead generation research
Methodology documented
Segmentation
Industrymarketing
Cite this stat
Plain Text
PPC/SEM ads: 36% return on investment. Source: Prospeo.io (2026). Via Lighthouse Intelligence -- https://lighthousedata.io/data/ppc-sem-roi-36
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<blockquote cite="https://lighthousedata.io/data/ppc-sem-roi-36" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>36%</strong> -- return on investment for PPC/SEM ads<br><small>Source: Prospeo.io (2026) · <a href="https://lighthousedata.io/data/ppc-sem-roi-36" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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