Google's Q4 ad revenue came in at $61.24B, up 33% YoY; YouTube's ad revenue rose to $8.63B, up 25.4% YoY
Jennifer Elias / CNBC :
Context & Ripple Effects
The Q4 result is an early benchmark for the advertising businesses that Alphabet continues to report separately. Later coverage shows YouTube reaching $10.26B in Q3 advertising revenue in 2025 while Google advertising reached $74.18B.
The subsequent reports also show a different growth profile at larger revenue bases: YouTube grew 10.7% in Q1 2026 and 13% in Q2, when it reached $11.06B in ad revenue. That makes the 2022 quarter a useful starting point for tracking both scale and moderation in growth rates.
First-order effects
- Google's reported Q4 advertising revenue of $61.24B establishes the scale of the company's core ad business for the quarter.
- YouTube's $8.63B in Q4 ad revenue confirms it as a separately disclosed and rapidly growing advertising business within Google.
Second-order effects
- Alphabet's later revenue disclosures give advertisers and media competitors a recurring benchmark for YouTube's share of the company's ad growth, rather than treating video advertising as an undifferentiated part of Google.
- As YouTube's reported ad revenue rises from this level to later quarterly records, Google gains more incentive to preserve distinct reporting for the video business.
Third-order effects
- The reporting series points to YouTube becoming a larger, more measurable advertising pillar alongside Google's broader ad operation, even as its year-over-year growth rates moderate from the 2022 pace.
- Separate disclosure of Google and YouTube advertising results makes the competitive balance between search-led and video-led ad businesses increasingly visible to the market.
The trend: Alphabet's earnings disclosures trace an advertising model in which YouTube expands in absolute revenue while Google remains the much larger ad engine.