B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Current
30%
30% -- cpm seasonal increase for Digital advertising (all industries) (2026)
CPMs across digital advertising spike 30% to 60% from October through December due to holiday advertising auction competition.
- Reported as a range (30–60%)
- Specific to Q4 / October through December
Attribution:
View source
Lighthouse Research Team
Last verified:
·
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Source verified
Evidence graded
Value
30%
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
75
Source Trust
60
Citation Chain
20
Independence
30
Methodology
45
Freshness
95
Source
rule1.ai
Primary
Tier B
https://rule1.ai/articles/cpm-formula ↗
Source Article
The CPM formula: how to calculate cost per thousand impressions | rule1
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The CPM formula: how to calculate cost per thousand impressions
CPM = (Ad Spend / Impressions) x 1,000. Learn the CPM formula with examples, platform benchmarks, industry data, and tactics to lower your cost per mille.
CPM = (Ad Spend / Impressions) x 1,000. That is…
Original Research
rule1.ai
· Original study ↗
Methodology
Range 30-60%; midpoint used.
Methodology documented
Segmentation
Industrymarketing
Cite this stat
Plain Text
Digital advertising (all industries): 30% cpm seasonal increase. Source: rule1.ai (2026). Via Lighthouse Intelligence -- https://lighthousedata.io/data/q4-cpm-spike-2026
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<blockquote cite="https://lighthousedata.io/data/q4-cpm-spike-2026" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>30%</strong> -- cpm seasonal increase for Digital advertising (all industries)<br><small>Source: rule1.ai (2026) · <a href="https://lighthousedata.io/data/q4-cpm-spike-2026" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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