WillItSurvive
BPO and customer operations firms · Japan

Chatwork Co., Ltd.

go.chatwork.com ↗

Japanese business chat app (kubell) pivoting into outsourced back-office BPaaS work.

Losing its protection
Assessed 26 July 2026 · Evidence as of 26 July 2026
The structural protection is eroding.
On the recordSince 26 July 2026 · Checkable from August 14, 2026 · Every call on the record Checkpoint: Q2 FY2026 earnings, checkpoint on ¥15B/10-15% EBITDA mid-term target
The call

A sticky chat base just turned profitable, but its growth bet is outsourced back-office work sitting directly in AI's automation path.

Kubell (formerly Chatwork) sells a chat app used by about 950,000 small Japanese businesses and just became profitable after years of losses. The company is trying to grow by adding bookkeeping, payroll, and invoicing services, but these are exactly the kinds of repetitive tasks that AI software can do automatically, which means Microsoft Teams and LINE WORKS could copy or replace kubell's new services relatively easily. The one thing that could change this picture is whether kubell's core chat product stays so sticky that customers keep paying, and whether the company can build AI tools that do back-office work better than standalone automation software can.

Why
01
AI pressure: AI-driven bookkeeping/invoicing automation (freee, Money Forward AI tools). The BPaaS bookkeeping, payroll and invoicing tasks it sells are exactly the formalizable work AI agents are built to automate. Could AI do the core job? Yes, likely.
02
Bigger players: Microsoft Teams (M365 bundle) and LINE WORKS. Both run live chat products in Japan's SME market; nothing stops either from bundling in on top of Chatwork's user base. Could a giant copy it? Yes, easily.
03
What protects it. Chat embedded in ~950,000 companies with 0.86% paying-ID churn, giving workflow lock-in in a fragmented local market.
What would change this call
Chatwork paying-ID churn rate reported quarterly. A rise above 1% would signal Teams or LINE WORKS pulling customers away.
Q2 FY2026 earnings due August 14, 2026. Shows whether BPaaS growth is tracking toward or missing the ¥15B mid-term target.
freee or Money Forward launching BPaaS-style outsourced bookkeeping services. Would show accounting-software rivals encroaching on kubell's back-office growth engine.
Key numbers
  • Paying IDs ~834,000, +8.6% YoY (2025-12-10)
  • FY2025 net profit ¥215M vs ¥1.17B loss prior year (2026-02-16)
  • FY2026 revenue guidance ¥10.768B, +13.0% (2026-02-16)
Named risks
  • BPaaS growth engine covers formalizable tasks explicitly automatable by AI, with moat still unproven. Severity: high
  • Executive-impersonation phishing scams since January 2026 could erode user trust. Severity: medium
  • Prior FY2021-2023 accounting restatement raises governance concerns. Severity: medium
  • BPaaS revenue forecast already downgraded once (December 2025), risking mid-term target miss. Severity: high
  • Stock down sharply from all-time high ¥2,624 to ¥260-300 range, reflecting market skepticism. Severity: medium
Rivals, as read in July 2026
RivalDirectionEvidence
Microsoft Teamscontesting~320M MAU globally (May 2026), bundled in M365, no structural barrier to Japanese SMEs
LINE WORKScontesting~460,000 companies, ~5M users claimed mid-2024, LINE-affiliated distribution in Japan
Slackcontesting~42M DAU globally (May 2026), Salesforce-owned, larger scale than Chatwork
freee / Money Forwardgaining onAccounting-side platforms positioned to encroach on kubell's BPaaS bookkeeping business
Questions people ask
Is Chatwork (kubell) profitable in 2026?
Yes, kubell (formerly Chatwork) posted its first net profit in years, ¥215 million for FY2025 (year ended Dec 31, 2025), versus a ¥1.172 billion net loss the prior year, with revenue of ¥9.529 billion, up 12.5% YoY, per its Feb 16, 2026 earnings release.
Could AI replace Chatwork's business?
Chatwork's core chat product is sticky (0.86% churn as of Sept 2025), but its BPaaS growth engine, bookkeeping, payroll, invoicing, tax adjustment, covers formalizable tasks the company itself frames as automatable, and it's racing to build an AI+human 'Coordination Engine' unveiled only in December 2025.
Who is Chatwork's biggest competitor?
Microsoft Teams (~320 million MAU globally) and LINE WORKS (~460,000 companies and ~5 million users claimed as of mid-2024) both operate unimpeded in Chatwork's core Japanese SME chat market; neither faces structural barriers to taking share.
Who owns Chatwork / kubell?
kubell Co., Ltd. (renamed from Chatwork Co., Ltd. in July 2024) is an independent public company listed on the Tokyo Stock Exchange Growth Market under ticker 4448, with no parent company; it IPO'd on the TSE Mothers market on September 24, 2019.
What is Chatwork's BPaaS business and is it working?
BPaaS (Business Process as a Service) outsources bookkeeping, payroll and invoicing for SMEs; its revenue grew 60.7% YoY in Q3 FY2025 reaching ~¥1.19 billion ARR, but the company had to downward-revise BPaaS revenue forecasts in December 2025 even as profit guidance rose.
Did Chatwork have any accounting problems?
Yes, the company discovered an accounting error tied to understated customer-relationship assets from its 2021 Chatwork Storage Technologies consolidation, forcing a delayed and revised Q2 FY2024 earnings release and restatement of FY2021-2023 figures.
Timeline
  • 2026-06-24Q1 FY2026 earnings show ¥197M profit vs ¥29M loss year earlier; EBITDA up 63.8% YoY
  • 2026-03-23kubell announces acquisition of cloud postal-service provider atena Inc.
  • 2026-02-16FY2025 results reported: revenue ¥9.529B (+12.5%), net profit ¥215M, first profit in years
  • 2026-02-09Company issues fourth public warning about executive-impersonation phishing scam
  • 2026-01-14First public warning issued over fake Chatwork accounts impersonating executives
  • 2025-12-17BPaaS revenue forecast downward revised even as profit guidance raised
  • 2025-12-10Q3 FY2025 data shows record-low 0.86% paying-ID churn and 954k companies using Chatwork
  • 2025-11Acquisition of Paytner Invoice cloud invoicing business completed
  • 2024-07Chatwork Co., Ltd. renamed to kubell Co., Ltd., marking pivot beyond chat into BPaaS
  • 2019-09-24IPO on Tokyo Stock Exchange Mothers market
Revision history
26 July 2026
First assessed. Losing its protection. The text above is fixed as of this date and is not edited afterwards.
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