Zeimee
1 known investors
Zeimee is an AI tool for Japanese tax accounting firms that generates candidate journal entries, document (receipt) analysis, matching, and reconciliation from accounting software data and evidence received via file, LINE, or email. Staff review, edit, reject, or approve the AI-generated candidates before reflecting them into the accounting software.
Also known as Vibe Coding Lab · ゼイミー · 株式会社Vibe Coding Lab · 株式会社Zeimee
Founders & leadership
Investors · 1
Company profile
researched Aug 2026Zeimee is a Japanese software product for tax accountant offices (税理士事務所) and accounting firms that applies AI to recurring monthly close work. It ingests transaction data from accounting software together with supporting documents (receipts, invoices, bank and card statements) that arrive as files or via LINE and email, and generates candidate journal entries, account and tax classifications, document-to-transaction matches, and payment reconciliations. Items that require human judgment are collected into a single review queue where staff can confirm, edit, reject or approve them before results are reflected back into the accounting software; approval inside Zeimee and reflection into the accounting system are tracked separately.
Shipping features listed by the company include AI journal entry proposals, AI document (証憑) parsing, AI reconciliation matching invoices against cash in/out, monthly checks for balances, anomalies and missing documents, client-communication support that organizes missing materials and open questions, and task management showing per-client progress. Planned features include broader accounting-software integrations, a client portal, automatic reminders, monthly report output, per-staff KPIs, and management of AI check rules. Supported accounting software cited at launch was freee会計 and Money Forward Cloud Accounting; a later deployment also covers work performed in Miroku Joho Service (MJS) software.
The product is operated by 株式会社Zeimee (previously announced under the name 株式会社Vibe Coding Lab), based in Chofu, Tokyo, at the University of Electro-Communications. Its stated positioning is "税理士の手作業を、AIで限りなくゼロへ" — reducing manual work for tax professionals so they can focus on tax judgment and advisory work.
Founding story
Founded by CEO Shuma Sajimoto (佐次本脩真), a graduate of the University of Electro-Communications Graduate School of Informatics and Engineering who worked on software development and AI in graduate school and served as a software engineer at Mercari from August 2025 to April 2026 before starting Zeimee to reduce the practical burden of monthly accounting work with AI. Product development is informed by feedback from tax accountant offices spending time on bookkeeping, document collection and reconciliation. Kento Hatakeyama (畠山謙人), a certified public accountant and tax accountant who worked at Yamato Kogyo, Deloitte Touche Tohmatsu and CyberAgent (consolidated closing and AbemaTV accounting) before opening his own tax practice in 2025, serves as an adviser.
Business model
B2B software sold to tax accountant and accounting firms, delivered as an AI agent layered on top of the firm's existing cloud accounting software. Client companies of the firm are not required to use the product; a firm can begin with its own bookkeeping, document collection and reconciliation workflows. The product was launched in a limited early-access (先行提供) phase in which participating firms contribute usage data and feedback used to expand supported tasks, accounting-software integrations and check accuracy.
Traction
Early access opened 2026-05-25 for firms using freee会計 and Money Forward Cloud Accounting. In August 2026 the company announced a full-scale validation deployment at Seiwa Tax Corporation (成和税理士法人, Kure, Hiroshima), which has more than 2,000 client companies, across two offices (Kure on MJS software and Hiroshima on Money Forward Cloud Accounting), targeting a reduction of more than 70% in bookkeeping time. Stated goal is 600 firms and 30,000 client companies within a year of launch.
Latest developments
In August 2026 the company began full-scale validation of Zeimee at 成和税理士法人 (over 2,000 client companies) across its Kure and Hiroshima offices, targeting a 70%+ reduction in bookkeeping time, and announced a total of 20 million yen raised from Skyland Ventures to fund feature development (AI journal entries, document parsing, reconciliation), expanded integrations with freee and Money Forward, security and operations infrastructure, onboarding support for large tax corporations, and hiring of engineers and business development staff.
▸Full profile — market position, technology, go-to-market, geography, history, risks & controversies
Market position
Positions itself against manual bookkeeping workflows and outsourced bookkeeping services, arguing that existing outsourcing becomes costly at firms with many clients and that generic AI tools such as Claude are hard to embed in firm workflows tied to accounting software. It cites MJS's "会計事務所白書2024" finding that 93% of accounting firms are aware of generative AI, 37% have used it and 63% have not, with 50% of non-users saying they are interested but do not know how to begin.
Human-in-the-loop design in which AI output remains a reviewable candidate rather than an automatic posting, consolidation of statements, documents, unreconciled items and open questions into a single review surface, support for accounting software that is otherwise hard to connect to general-purpose AI (such as MJS), and standardization of monthly workflows so output quality is consistent across staff. Development combines tax professionals with AI knowledge and engineers.
Technology
AI-based processing of bank and card statements, invoices and receipts to produce journal-entry candidates, account title and tax category suggestions, document-to-transaction linkage, and matching of invoices against incoming/outgoing payments, plus monthly checks for balances, anomalous values and missing materials. The design keeps AI output as candidates: nothing is posted automatically, and users confirm, correct, reject or approve each item. The company notes an approach that works even with accounting software that is difficult to integrate with generic AI tools such as MJS.
Go-to-market
Direct sales and consultation through the company's website (inquiry form for demos, pricing and integration questions), an early-access sign-up program, press releases distributed via PR TIMES, and reference deployments with named accounting firms. The company states a target of 600 firms and 30,000 end client companies within one year of launch.
Tax accountant offices (税理士事務所), accounting firms, and in-house accounting staff at small and medium-sized enterprises in Japan, particularly firms using freee会計, Money Forward Cloud Accounting or MJS accounting software. Deployments range from small offices to large firms such as one with more than 2,000 client companies.
Geography
Japan. Headquarters in Chofu, Tokyo (Chofugaoka 1-5-1, University of Electro-Communications West Building 11, Room 411). Deployment work extends to Kure and Hiroshima in Hiroshima Prefecture, with a stated aim of nationwide expansion to tax and accounting firms.
History
The operating entity was established in March 2026 with capital of 20,000 yen, announced as 株式会社Vibe Coding Lab, headquartered in Chofu, Tokyo. Early access to Zeimee began 2026-05-25. By August 2026 the company was referred to as 株式会社Zeimee, announcing a deployment at 成和税理士法人 and a 20 million yen investment from Skyland Ventures.
Risks & controversies
The company states that journal entries, tax categories, document linkages, payment checks and monthly checks presented by Zeimee are candidates and supporting information only, with final confirmation, judgment and approval resting with the user, and that functionality and scope may change during the early-access period. Integration coverage varies by accounting software and by function, requiring per-firm assessment before adoption.
Compiled by commissioned research from 7 cited public sources — announcements, filings, and press listed under research sources below.
Key figures
latest reportedCompany-reported or press-reported figures, each dated to when it was claimed — not independently audited.
Timeline · 3
launches, deals, and filings株式会社Zeimee announced it had raised a total of 20 million yen from Skyland Ventures, to be used for AI journal entry, document parsing and reconciliation feature development, expanded accounting-software integrations, security and operational infrastructure, onboarding support for large tax corporations, and hiring of engineers and business development staff.
Zeimee began a full-scale validation deployment at Seiwa Tax Corporation (成和税理士法人, Kure, Hiroshima), which has more than 2,000 client companies, covering its Kure office (MJS accounting software) and Hiroshima office (Money Forward Cloud Accounting), targeting a reduction of over 70% in bookkeeping time.
株式会社Vibe Coding Lab began 先行提供 (early access) of the monthly accounting AI agent Zeimee for tax accountant offices, accounting firms and SME accounting staff, supporting freee会計 and Money Forward Cloud Accounting.
Dated company events from announcements, filings, and press; legal rows summarize public dockets and regulator releases.
▸Research sources · 7
primary sources listed
- Zeimeezeimee.com · web
7 public sources were cited for this profile; the first-party ones are listed here.
Frequently asked questions
- What does Zeimee do?
- Japanese AI agent for tax and accounting firms that drafts bookkeeping, receipt-matching and reconciliation candidates for staff review.
- Who are Zeimee's investors?
- Zeimee's investors include Skyland Ventures.