An SEO audit should be performed on an affiliate program website at least every six months to ensure optimal performance and visibility. However, quarterly audits are ideal for competitive niches, frequent content updates, or major algorithm changes. Regular audits help identify and fix technical issues, update outdated content, and improve keyword targeting. They also ensure compliance with search engine guidelines and reveal opportunities for growth. Additionally, after significant site changes—like redesigns, migrations, or new backlink campaigns—an immediate audit is crucial. By staying proactive, affiliate marketers can maintain high search rankings, improve user experience, and maximize earnings. Consistent SEO auditing is key to staying ahead in the ever-evolving digital landscape and sustaining long-term affiliate program success.