“Can a legacy regional bank become the dominant sponsor-bank and embedded finance infrastructure layer for fintechs and software platforms at scale?”
Fifth Third is a 167-year-old national bank that has evolved from a traditional regional bank into a significant embedded finance infrastructure provider through its Newline platform. Rather than simply banking consumers and businesses directly, Fifth Third has leaned into becoming a sponsor bank and API infrastructure layer for fintechs and software platforms — most visibly through the 2024 Stripe Treasury partnership and the 2025 Brex commercial card deal. Newline grew fee revenue 53% in 2025, positioning the bank as one of the few legacy institutions successfully monetizing the embedded finance wave by sitting behind consumer-facing fintechs as the regulated balance sheet and rails provider.
Fifth Third Bank discloses Fifth Third Bank, National Association (in-house) as its banking provider, according to the Embedded Finance Index 2026.
Fifth Third Bank does not disclose a bank charter of its own; its banking services are provided through Fifth Third Bank, National Association (in-house).
Fifth Third Bank processes payments through Worldpay and Fifth Third Bank (self-operated acquirer / member bank for Stripe Visa/Mastercard).
Fifth Third Bank's cards are issued through Fifth Third Bank, National Association (in-house).
Fifth Third Bank's payroll is powered by Paycor.
The Embedded Finance Index 2026 maps 7 layers in Fifth Third Bank's stack: Payments / PSP (Worldpay and Fifth Third Bank (self-operated acquirer / member bank for Stripe Visa/Mastercard)); Banking / BaaS (Fifth Third Bank, National Association (in-house)); Card issuing (Fifth Third Bank, National Association (in-house)); Lending (Small Business Line of Credit (unsecured, $10K–$100K), Business Term Loans, Secured Business Line of Credit and Commercial Lending); Payroll (Paycor); Spend / AP (Brex); Treasury (Brex Treasury).
Fifth Third Bank is founded in 1858 and headquartered in Cincinnati, Ohio, US.
Get a read on where your own stack stands against Fifth Third Bank and the rest of its category — what they built versus bought, which providers they use, and where the gaps in your own strategy and competitive set actually are.