TKC Corporation
9746・Prime Market・Information & Communication
Accounting Firm Business
Core business providing cloud-based financial accounting and tax filing systems to accounting firms and their client companies, in cooperation with the TKC National Federation
| Period | Current | Previous | Change |
|---|---|---|---|
| Segment revenue (six-month cumulative) | ¥26,508 million | ¥25,520 million (prior six-month period) | ↑ |
| Segment operating income (six-month cumulative) | ¥5,443 million | ¥7,000 million (prior six-month period) | ↓ |
| Segment revenue year-on-year change | up 3.9% | – | ↑ |
| Segment operating income year-on-year change | down 22.2% | – | ↓ |
| Number of TKC members | 11,600 (as of end of March 2026) | – | — |
| Number of companies using the FX Series | over 335,000 companies | – | ↑ |
| Number of corporate tax e-filings (using TKC systems) | over 654,000 companies | – | ↑ |
| Number of corporate groups using TKC Consolidated Group Solution | approx. 6,200 corporate groups (as of end of March 2026) | – | ↑ |
| Market share among listed companies | 44% | – | — |
Business Details
The segment's main customers are accounting firms (tax accountants and certified public accountants) and their client companies (from small and medium-sized enterprises to large corporations), offering information processing services, software, consulting, and hardware sales. Working closely with the TKC National Federation, an organization of 11,600 TKC members (as of the end of March 2026), the business centers on the development and provision of cloud systems that support the realization of "profitable settlements and appropriate tax filings." It also offers tax filing systems and legal information databases for large corporations, holding a 44% market share among listed companies.
Recent Overview
Revenue increased 3.9% year on year, but operating income declined 22.2% due to higher personnel costs
In the six-month period ended September 2026, the Accounting Firm Business segment recorded revenue of ¥26,508 million (up 3.9% year on year) and operating income of ¥5,443 million (down 22.2% year on year). Computer service revenue increased 5.7% year on year (driven by expanded new usage of OMS Cloud and the FX Cloud Series), while hardware revenue increased 13.2% year on year (due to PC replacement demand following the end of Windows 10 support). Meanwhile, the decline in operating income was mainly attributable to an increase in personnel costs from company-wide increases in performance-linked bonuses and enhanced recruitment efforts, while the marginal profit ratio remained roughly at the same level as the prior-year period. In February 2026, the FX Cloud Series obtained Japan's first Digital Seamless Certification from JIIMA. In March 2026, operation of the "Disaster Fast Link" began in cooperation with the Japan Finance Corporation and the TKC National Federation.
Key Products
Growth Drivers
- Accelerating migration to the cloud version of the FX Cloud Series (steady progress in migration from the standalone version to the cloud version)
- Expanding usage of OMS Cloud and optional systems (driven by an increase in new TKC members)
- Expanding share in the large-corporation market (44% market share among listed companies, used by 94% of the top 100 companies by revenue)
- Growing adoption of TKC Monitoring Information Service (MIS) (adopted by 500 financial institutions, over 370,000 usage cases)
- Promoting sales of FAManager and other products in anticipation of demand related to compliance with the new lease accounting standard (mandatory from April 2027)
- Strengthening the competitive advantage of the FX Cloud Series through obtaining Digital Seamless Certification (Japan's first from JIIMA)
- Enhancing the added value of Accounting Firm Business division systems through sequential AI agent integration starting July 2026
- Leading industry standardization as the representative secretary organization of the Electronic Invoice Promotion Association (EIPA) for Digital Invoices (Peppol)
- Strengthening the support infrastructure for small and medium-sized enterprises through the "Disaster Fast Link" collaboration with the Japan Finance Corporation
Risks
- Risk of declining operating margin due to rising personnel costs (increases in performance-linked bonuses and enhanced recruitment) (operating income declined 22.2% in the current six-month period)
- Risk that migration from the standalone version to the cloud version of the FX Series does not proceed as planned (support scheduled to end at the end of 2030)
- Risk of declining profit margin due to increased hardware revenue (a rise in the proportion of relatively lower-margin hardware resulting in a structure of increased revenue but decreased profit)
- Risk of declining competitive advantage of existing systems due to the rapid spread of generative AI
- Risk of customer data or cloud service disruption due to cyberattacks
- Risk of constrained expansion of system usage among client companies due to slowing growth in the number of TKC members
- Risk of procurement difficulties and price increases for IT equipment and materials due to prolonged instability in the Middle East
Last updated: December 11, 2025