スマートバンク

Market position

SmartBank positions itself in the Japanese household budgeting and cashless payment market, differentiating from conventional budgeting apps by holding customer funds itself under funds transfer and prepaid payment instrument licenses. Management argues that visibility alone does not change behavior and targets "household improvement" rather than only household tracking, citing joint research with the NLI Research Institute estimating average household waste of about JPY 104,292 per year and roughly JPY 5.79 trillion nationally. Investors in the 2024 round described the company as having achieved strong product-market fit in consumer fintech.

Unlike aggregation-only budgeting apps, SmartBank holds user funds directly under its funds transfer and prepaid payment instrument licenses, giving it both the money and the transaction data; management frames this as enabling an AI assistant to accompany the full spend-save-grow cycle. The pair card, for which a patent application has been filed, lets two people share one balance and mutual visibility into transactions regardless of the nature of their relationship, including de facto marriages and cohabiting partners.

Technology

The service pairs a prepaid Visa card with a mobile app (iOS and Android) so that card transactions appear in the spending ledger in real time. The company has implemented generative-AI receipt recognition able to read creased or faded receipts, and links to credit cards, bank accounts and securities accounts. Its stated AI roadmap covers analysis (year-over-year spending change, peer comparison by age and household composition, identification of reducible fixed and variable costs), recommendation (budget setting, concrete cost-cutting proposals, action plans), and execution (spending limits when over budget, automated saving, spending-pattern optimization), extending longer term to AI life planning, savings assistance and investment support. Identity verification uses IC-chip reading of government ID plus selfie capture. The company holds ISMS (ISO/IEC 27001) certification.

Go-to-market

Direct-to-consumer distribution through the App Store and Google Play, supported by public relations, original survey data releases (e.g., on dual-income couples' finances), media appearances and press coverage, and co-marketing campaigns with consumer brands such as the sleep brand NELL for the pair card. Proceeds from the 2024 Series B first close were allocated to hiring and organizational strengthening plus user-acquisition marketing.

Japanese consumers managing day-to-day household spending, with particular traction among dual-income couples and cohabiting or married partners (pair card), users in their 20s, and families with children (junior card). The invoice-purchase service targets sole proprietors and freelancers.

Geography

Headquartered in Shinagawa-ku, Tokyo (7-22-17 Nishi-Gotanda, Gotanda TOC Building 11F; an earlier address of 1-8-12 Higashi-Gotanda was listed in 2024), operating in the Japanese domestic market.

History

Founded April 2019 in Tokyo, SmartBank obtained funds transfer and third-party prepaid payment instrument registrations and launched the B/43 budgeting prepaid card service in April 2021, later adding a pair card for couples, a junior card for children, deferred charging, credit-card and bank-account linking, and AI receipt scanning. In April 2024 it raised JPY 1.15 billion in debt from multiple financial institutions, and on 12 November 2024 announced the first close of a Series B round with JPY 2.93 billion in a third-party share allotment, bringing cumulative funding since inception to JPY 7.08 billion. The service is presented on the company's site as ワンバンク, an AI household-account product, alongside services including securities-account linking (2026-07), shared savings features (2026-06), IC-chip-based identity verification (2026-05) and an invoice-purchase service for sole proprietors operating 365 days a year (2026-08).

Risks & controversies

As a licensed funds transfer and prepaid payment instrument operator, the company depends on obtaining and maintaining financial licenses, an explicit use of proceeds from its 2024 raise. Management acknowledged that some merchant categories such as gas stations cannot accept the prepaid card, to be mitigated via linking to third-party credit cards and bank accounts, and that adding Apple Pay and Google Pay — the most requested feature — would affect the revenue structure and so is being timed accordingly. The stated shift away from payment-fee-centric revenue toward user charges and interest income remains in progress.