Capital One is acquiring corporate fintech Brex for $5.15 billion, a move that merges a traditional banking giant with a fast-growing spend management platform. The deal, announced in separate statements, aims to combine Brex’s corporate card and expense software with Capital One’s banking infrastructure and corporate banking services. This acquisition brings Brex’s tech stack and startup clientele under Capital One’s umbrella.

For years, Brex built a reputation for its tech-forward approach to corporate spending, offering integrated virtual cards, expense tracking, and travel booking for startups and tech companies. Capital One, meanwhile, has been expanding its commercial banking footprint. This acquisition signals a strategic push to modernize corporate banking by integrating Brex’s agile, software-driven platform into Capital One’s extensive financial services network.

The integration will be closely watched by the fintech and banking sectors. Success depends on merging Brex’s startup culture and product velocity with Capital One’s scale and regulatory compliance. For Brex customers, the deal promises deeper banking resources, while for Capital One, it offers a direct pipeline into the lucrative tech corporate market, accelerating its digital transformation.