US advertisers will spend $13.81 billion on affiliate marketing in 2026 — up 11.3% from $12.42 billion in 2025 — a growth rate nearly twice that of overall US retail ecommerce at 6.7%. The affiliate channel will drive an estimated $241 billion in US ecommerce sales this year, cementing its position not as a niche tactic but as core infrastructure for digital commerce.
Budget Acceleration: Why Brands Are Doubling Down on Affiliate in 2026
The data from Influencer Marketing Hub underscores the conviction behind these numbers: 72.2% of respondents expect their influencer and affiliate budgets to increase by over 50% in 2026. This is not steady-state growth — it is planned acceleration. The brands driving this investment surge are not new to the channel; they are sophisticated performance marketers who have already proven affiliate's incrementality and are now scaling aggressively into new verticals, new publisher types, and new international markets.
Global Affiliate Spend and the $12 ROI Advantage
Globally, the affiliate marketing industry surpassed $17 billion in annual spend in 2025 and continues growing at double-digit rates. The average ROI on affiliate investment in 2026 is $12 for every $1 spent — a figure that continues to attract budget from channels with lower accountability and harder-to-measure impact. As CFOs demand performance evidence for every marketing dollar, the cost-per-acquisition model of affiliate marketing has become structurally advantaged in budget allocation discussions.
Content and Creator Affiliates Are Growing Fastest
The growth is not uniform across all affiliate sub-channels. Content and creator-driven affiliate partnerships are growing fastest, as brands move away from pure coupon and loyalty dependency and invest in upper-funnel publisher types that build genuine purchase intent. The brands that will capture disproportionate share of this $241 billion in affiliate-attributed ecommerce are the ones treating publisher recruitment as a competitive advantage — not a checkbox.