Block vs. Sezzle: Which Fintech Stock Is Better for Investors in 2026?

Block and Sezzle both combine payments with consumer finance but differ significantly in scale and focus. Block operates larger ecosystems (Square, Cash App, Afterpay) with broader reach but slower user growth (3% for Cash App), while Sezzle shows faster momentum with 76.4% subscriber growth and 51.7% revenue growth. Block trades at 17.57X forward P/E versus Sezzle at 20.02X. Analysts favor Sezzle (Zacks Rank #2 Buy) for its stronger current growth and execution catalysts, while Block (Rank #3 Hold) requires proof that ecosystem integration can accelerate customer growth.