RankPay's SEO affiliate program offers a 10-20% recurring revenue share for referring clients to their results-based SEO service. The unique selling proposition here is that RankPay only charges clients when their keywords actually rank, which can be a compelling pitch that eases conversion -- prospects feel less risk signing up for performance-based pricing. The recurring commission structure means affiliates earn as long as referred clients remain active, building a growing passive income stream over time. For affiliates in the SEO, webmaster, and digital marketing niches, RankPay addresses a clear pain point for small businesses seeking affordable SEO without long-term contracts. However, the 10-20% range is on the lower end for SaaS-style recurring programs, and the variable rate means earning potential may be unpredictable until you establish your tier. The SEO services market is also saturated with both agencies and tools, making differentiation challenging. RankPay's brand recognition is modest compared to platforms like Semrush or Ahrefs. Best for affiliates with audiences of small business owners seeking hands-off SEO solutions.