“Can Square become the complete financial OS for small and medium businesses by owning the full stack — payments, banking, lending, payroll, and tax — on a single vertically integrated platform?”
Square launched in 2009 as a card-reader hardware company democratizing payment acceptance for micro and small businesses. Over a decade it evolved into a full financial operating system for SMBs — layering in payroll, banking (checking, savings), lending, and corporate card products, culminating in the 2021 launch of its own FDIC-insured bank, Square Financial Services, Inc. The 2021 rename to Block Inc. at the parent level separated the Square SMB brand from Cash App (consumer) and other ventures. The embedded finance strategy is now deeply vertical: Square underwrites loans using its own transaction data, issues checking accounts through its own bank charter, and embeds payroll/retirement/tax services directly into the seller dashboard.
Square discloses Square Financial Services, Inc. (in-house) as its banking provider, with Sutton Bank as its sponsor bank, according to the Embedded Finance Index 2026.
Square has applied for a national trust bank charter for Builders Bank & Trust, N.A. with the OCC. Status: application filed (2026-09-04). Until then its banking services run through Sutton Bank and Square Financial Services, Inc. (in-house).
Square processes payments through Square Payments (self-operated).
Square's cards are issued through Square Financial Services, Inc. (in-house).
Square's lending and capital products are provided by Square Financial Services, Inc. (in-house) and Homegrown.
Square connects to bank accounts through Plaid and Salt Edge.
Square's payroll is powered by Check.
Square's crypto products run on Square Bitcoin (self-operated — Bitcoin Payments + Bitcoin Conversions).
Square integrates with QuickBooks, Xero, Sage, FreshBooks and NetSuite.
The Embedded Finance Index 2026 maps 9 layers in Square's stack: Payments / PSP (Square Payments (self-operated)); Banking / BaaS (Square Financial Services, Inc. (in-house)); Card issuing (Square Financial Services, Inc. (in-house)); Lending (Square Financial Services, Inc. (in-house), Homegrown, Square Loans, Square Cash Advance and 1 other); Payroll (Check); Open banking (Plaid and Salt Edge); Sponsor bank (Sutton Bank); Crypto (Square Bitcoin (self-operated — Bitcoin Payments + Bitcoin Conversions)); Accounting (QuickBooks, Xero, Sage, FreshBooks and 1 other).
Square was founded by Jack Dorsey and Jim McKelvey and is founded in 2009, headquartered in San Francisco, California, USA.
Square has raised Post-IPO (NYSE: SQ, now Block Inc.) in total (latest round: Post-IPO Debt).
Square's acquisitions include Afterpay (2022), TIDAL (2021), Verse (2020), Credit Karma Tax (2020), Stitch Labs (2020), Dessa (2020), Eloquent Labs (2019) and Weebly (2018).
Get a read on where your own stack stands against Square 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.