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Smart Bank
Visa prepaid card and household budgeting application
About Smart Bank
Smart Bank, Inc. is a Japanese fintech company that provides the "OneBank" (formerly B/43) service, a household financial management application linked with a Visa prepaid card. The service aims to simplify expense tracking by automatically recording transactions made with the card in the app in real-time.
The company was founded in April 2019 by CEO Shota Horii, his twin brother and CTO Yuta Horii, and CXO Jun "takejune" Taketani. This is the second venture for the founding team, who previously created Fablic, the company behind Japan's first flea market app, "Fril" (now Rakuten's Rakuma). After selling Fablic to Rakuten in 2016 and serving a transition period, they identified a gap in the Japanese market for modern, user-friendly financial management tools, particularly as the country moves towards increased cashless transactions. This led to the creation of Smart Bank to solve the problem of complex expense management.
Smart Bank's core product, OneBank, combines a household budget app with a chargeable Visa prepaid card. Users load a budget onto the card, and all payments are instantly reflected in the app, eliminating the need for manual expense entry. The platform offers several card types to cater to different user segments. The "My Card" is for individuals, while the "Pair Card" is designed for couples and partners to manage shared expenses from a joint account, a feature not commonly offered by traditional Japanese banks. There is also a "Junior Card" for children, allowing parents to provide allowances and monitor spending. The business model includes revenue from subscriptions, Buy Now Pay Later (BNPL) services, and referral fees.
The app has surpassed one million downloads and recently expanded its features to include integration with external credit cards and bank accounts, allowing users to consolidate all their financial activities in one place. Smart Bank is also developing an AI assistant service that uses generative AI to analyze spending habits and provide personalized financial advice to help users reduce unnecessary spending and create surplus funds. The company holds licenses for money transfers and prepaid payment instruments, distinguishing it from competitors by allowing it to hold user deposits and facilitate payments.
Source: Dealroom company dataAt a glance
- Status
- Operational
- Founded
- 2019
- Headquarters
- Tokyo, Japan
- Employees
- 21
- Open positions
- 2
- Dealroom signal
- 77.7/100
- Industry
- Fintech
- Sub-industry
- Payments, Financial Management Solutions
- Sector
- Fintech, KYC, Fraud Management, Embedded Finance
- Technology
- Mobile app
- Business model
- SaaS
- Client focus
- b2b, b2c
Knowledge graph
More headlines
Funding history
Company financing events and reported valuations.
| Deal type | Date | Amount | Valuation | Investors | Source |
|---|---|---|---|---|---|
| SERIES BOther financing | Jan 2025 | $1.6M | $94M | Z Venture Capital · SMBC Venture Capital | ↗ |
| SERIES BOther financing | Dec 2024 | $29M | $115M | Undisclosed | — |
Financials
Revenue, earnings and other financial measures where available. Years marked “E” are estimates.
Growth signals
Latest recorded traffic for Smart Bank is 6.2K monthly website visits, down 25.3% over the last three months. Smart Bank's team grew 5% over the past year.
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Investments and acquisitions
Recent portfolio relationships for companies that also act as investors or acquirers.
Investors
From Dealroom's funding and investor records, grouped by the round each investor first entered.
Seed8 investors entered at this stage
Beenext
GMO Venture Partners
Global Brain Corporation
SMBC Venture Capital
ANRI
Mizuho Capital
SV-Fintech Fund
Akatsuki
Series A4 investors entered at this stage
Globis Capital Partners
Mitsui Sumitomo Insurance Venture Capital
Z Venture Capital
DBJ Capital
Series B and later7 investors entered at this stage
The Hokkoku Bank- TBThe Kiyo Bank
Mitsubishi UFJ Financial Group
Shoko Chukin Bank
JA Mitsui Leasing
Seven Bank
Sumitomo Mitsui Banking
Other known investors4 additional known investors
J-Startup
Dawn Capital
Japan Post Bank Spiral Regional Innovation Fund
Spiral Capital
Source: Dealroom Talent Intelligence.
Global footprint
team presence
Market sentiment
An AI-synthesised read of the highest-engagement posts about Smart Bank on X, ranked by likes and reposts, corporate channels excluded.
Reading the room on X — pulling top posts and synthesizing themes…
Source: X recent search ranked by engagement (likes + retweets) · Synthesis by Claude · Cached for 1 hour
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