“Can a fintech layered on top of Stripe Treasury become the default automated cash management OS for cash-rich SMBs and startups?”
Founded in 2021, Mayfair is a fintech platform targeting businesses seeking higher yield on idle cash without maturity dates, lockup periods, or market risk. The product is built on Stripe Treasury with Evolve Bank & Trust as the sponsor bank, positioning Mayfair as an automated treasury management layer rather than a bank itself. The company emerged from stealth in January 2023 with Tiger Global backing and has focused on expanding FDIC insurance coverage and APY as its core differentiators for SMBs and startups.
Mayfair discloses Stripe Treasury as its banking provider, with Evolve Bank & Trust as its sponsor bank, according to the Embedded Finance Index 2026.
Mayfair does not disclose a bank charter of its own; its banking services are provided through Evolve Bank & Trust.
The Embedded Finance Index 2026 maps 3 layers in Mayfair's stack: Banking / BaaS (Stripe Treasury); Sponsor bank (Evolve Bank & Trust); Treasury (Stripe Treasury, Evolve Bank & Trust and Stripe Treasury (Evolve Bank & Trust)).
Mayfair was founded by Kent Mori, Daniel Chan, Kevin Chan and Munish Chopra and is founded in 2021, headquartered in San Francisco, CA, USA.
Mayfair has raised $14M in total (latest round: Seed).
Get a read on where your own stack stands against Mayfair 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.