“Can a super-app-distributed internet-only bank become Korea's default financial OS by winning the underserved (SOHO, foreigners, vulnerable borrowers) the incumbents ignore?”
Toss Bank is the chartered-bank arm of Viva Republica, which began in 2014 as a P2P money transfer app to fix Korea's notoriously broken bank-transfer UX. After the super-app (~25M users) matured into lending, brokerage, and insurance, Viva Republica pursued and won South Korea's third internet-only bank license, launching Toss Bank in October 2021. The strategy is distribution-led: the Toss super-app funnels users into Toss Bank deposits, loans, FX, and cards, while Toss Bank focuses on inclusive finance — non-face-to-face SOHO/sole-proprietor lending, foreigner onboarding via AI ID verification, and the SOHO Score being licensed out to other lenders.
Toss Bank discloses Toss Bank Co., Ltd. (in-house) as its banking provider, according to the Embedded Finance Index 2026.
Toss Bank does not disclose a bank charter of its own; its banking services are provided through Toss Bank Co., Ltd. (in-house).
Toss Bank processes payments through Toss Bank domestic transfers (in-house) and Toss Bank debit card issuance (in-house).
Toss Bank's cards are issued through Toss Bank (in-house).
Toss Bank runs its ledger on in-house core banking.
Toss Bank connects to bank accounts through MyData (Korean open banking — required for household loan applications).
Toss Bank uses Toss Bank International Remittance (in-house) for FX and cross-border payouts.
The Embedded Finance Index 2026 maps 7 layers in Toss Bank's stack: Payments / PSP (Toss Bank domestic transfers (in-house) and Toss Bank debit card issuance (in-house)); Banking / BaaS (Toss Bank Co., Ltd. (in-house)); Card issuing (Toss Bank (in-house)); Ledger (in-house core banking); Lending (Toss Bank Sole Proprietor Loan (사장님대출) — KRW 3.5T deployed to ~70k sole proprietors, Toss Bank Professional Business Loan (doctors/dentists/pharmacists/lawyers/CPAs/etc.), Toss Bank Jeonse Deposit Loan (전월세 보증금대출), Toss Bank vulnerable-borrower interest reduction program (취약차주 지원) and 2 others); Open banking (MyData (Korean open banking — required for household loan applications)); FX & payouts (Toss Bank International Remittance (in-house)).
Toss Bank is founded in 2021 and headquartered in Seoul, South Korea (Gangnam District).
Get a read on where your own stack stands against Toss 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.