AffiliateBooster.com has released its inaugural 2026 State of Affiliate Marketing Report, revealing that the global affiliate marketing industry has crossed $17 billion in 2025 and is on track to surpass $20 billion by the end of 2026. The report highlights that affiliate marketing is growing nearly twice as fast as overall digital ad spend, driven by AI search disruption, creator commerce, and SaaS partnerships.
Key Findings from the Report
The global affiliate marketing market is valued at $17–18.5 billion in 2025 and projected to reach $20.07 billion in 2026, with long-range forecasts pointing to $82.64 billion by 2035 at a CAGR of approximately 17%. Affiliate marketing platform revenue alone is forecast to grow from $22.58 billion in 2025 to $35.70 billion by 2033.
In the United States, affiliate marketing spending is expected to reach $13.20 billion in 2026, a 10.1% year-over-year increase from $11.99 billion in 2025, marking the first year U.S. affiliate spend exceeded $10 billion. By 2028, U.S. spend is projected to hit $15.80 billion, a 65% jump from 2023.
Brand adoption is now near-universal, with 81% of brands and 84% of publishers running affiliate programs. 57% of marketers are actively increasing affiliate budgets in 2026. Top brands derive 5%–25% of their online sales through affiliate channels, with an average ROI of $15 for every $1 spent, outpacing nearly every other paid channel.
Most Profitable Verticals
The report identifies the highest-earning niches by average monthly affiliate revenue: eLearning ($15,551), travel ($13,847), beauty ($12,475), personal finance ($9,296), and health & wellness ($7,194). SaaS affiliate programs offer the most generous commission structures, with rates ranging from 20% to 70%.
Network Market Share
Amazon Associates remains the dominant program with a 46.64% global market share, followed by Rakuten Advertising (7.70%), Awin (6.88%), ShareASale (6.27%), and CJ Affiliate (6.03%).
The AI Disruption
The report's most significant finding is the rapid restructuring of affiliate traffic by AI search. Google's AI Overviews are linked to a 25% drop in referral traffic for publishers in 2025. However, visitors arriving from AI search engines convert at approximately 14%, compared to 2.8% for traditional Google search, a nearly 5x conversion premium. The report concludes that 2026 will be the year affiliate marketers shift decisively from SEO-only strategies to Generative Engine Optimization (GEO), optimizing content for citation by AI tools. 79.3% of affiliate marketers have already adopted AI-driven content creation.
Channel and Behavior Shifts
Mobile now drives over 50% of all affiliate traffic. SEO remains the top traffic source for affiliates (69%), followed by social media (67%) and content (65%). Among social platforms, Facebook leads adoption at 64%, with Instagram (58%), YouTube (57%), and TikTok (42%). Consumer trust signals remain strong: 88% of consumers say influencers have inspired an affiliate purchase, and 90% rely on product reviews before buying.
The full report is available for free on AffiliateBooster.com.
