How much does a B2B Google Ads agency cost?

Treat agency fees and media spend as separate lines. Ad spend is paid directly to Google, while the agency fee covers account structure, negative keywords, landing page alignment, CRM integration, and pipeline optimization — not clicks. For small accounts (under ~$10K monthly spend), management fees typically range from $1,500–$5,000 per month. Larger programs often use a fee of ~10–15% of spend, with a minimum retainer. B2B fees reflect the complexity of buying committees and offline conversion tracking, rather than focusing on low-quality leads. The key metric is blended CAC and cost per opportunity relative to deal value. A higher retainer that reduces wasted CPC may ultimately cost less than a lower fee that results in inefficient spending. Scope our B2B Google Ads agency work against that math; broader channel economics are in How much does PPC cost?.