India’s B2B fintech landscape in 2026 is dominated by infrastructure-first companies — especially in **payments, banking APIs, embedded finance, lending infrastructure, and MSME operating systems**. The biggest winners are firms building rails for businesses rather than consumer-only apps. UPI scale, Account Aggregator adoption, GST-linked underwriting, and AI-led risk systems are reshaping the sector. Here are the strongest B2B fintech companies/startups in India for 2026: | Segment | Com
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