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Smart Bank

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Visa prepaid card and household budgeting application

Tokyo, JapanFounded 2019Fintech
Valuation $50–100M Last recorded · 2025
Revenue <$1M Latest reported FY
Headcount <100 Current team size
Total funding $50–100M Disclosed equity funding
Unlock exact values This page shows ranges. Dealroom has the exact numbers for Smart Bank and the history behind them.

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 data

At 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

Funding history

9 recorded events

Company financing events and reported valuations.

Deal typeDateAmountValuationInvestorsSource
SERIES BOther financing Jan 2025 $1.6M $94M Z Venture Capital · SMBC Venture Capital ↗
SERIES BOther financing Dec 2024 $29M $115M Undisclosed —
Showing the latest 2 of 9 recorded eventsBook a demo for the full funding history →

Financials

Revenue over time

Revenue, earnings and other financial measures where available. Years marked “E” are estimates.

YearRevenueGrowth
2026
2025
2024
2023 —
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Growth signals

Smart Bank website traffic

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.

Latest monthly visits6.2K 3-month web change-25.3% 1-year team growth+5%
Summary metrics are public; monthly history is available with a demoCompare with peers →

Investments and acquisitions

Capital deployed

Recent portfolio relationships for companies that also act as investors or acquirers.

Investors

23 investors on the cap table

From Dealroom's funding and investor records, grouped by the round each investor first entered.

Seed8 investors entered at this stage

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
  • The 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
Team profiled 3 named & role-tagged
Founders Hidden — book a demo/100 quality score
Key operators 3 quality Hidden — book a demo/100
Potential founders Hidden — book a demo likely future founders
Startup mafia Hidden — book a demo alumni-founded startups
Talent movements Hidden — book a demo in · Hidden — book a demo out past 12 months

Source: Dealroom Talent Intelligence.

Global footprint

Workforce and web traffic by country
Workforce by country
1 countries with
team presence
🇯🇵 Japan94.4%
1 country shown

Market sentiment

Posts on X, past 7 days

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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