Announced details
Individual income tax filing, year-end tax adjustments, final tax returns, salary payment reports, resident tax, social insurance, benefits, and tax filing and payment by sole proprietors and people with side jobs
An estimated ¥100 billion to ¥300 billion in costs is spent across society each year on year-end tax adjustments
PCA is one of the companies participating in the Social Systems Digitalization Study Group (Born Digital Study Group) of the SAJ Policy, Legal Affairs and Intellectual Property Committee.
Based in Minato-ku, Tokyo. Its chair is Tanaka Kunihiro (田中邦裕). A general incorporated association whose members include software vendors and other companies.
1-2-21 Fujimi, Chiyoda-ku, Tokyo, PCA Building (PCA headquarters)
In this announcement the company addresses none of Contract Value / Offering price / Impact on Business Performance.
Software Association of Japan website. The UK survey included local interviews with HMRC, software vendors, and accounting and tax professionals.
| Item | Details |
|---|---|
| Names of Products / Services Covered | PCA Arch cloud-based core business system |
| Counterparty | General Incorporated Association Software Association of Japan (SAJ) |
| Counterparty overview | Based in Minato-ku, Tokyo. Its chair is Tanaka Kunihiro (田中邦裕). A general incorporated association whose members include software vendors and other companies. |
| Relationship with the Company | PCA is one of the companies participating in the Social Systems Digitalization Study Group (Born Digital Study Group) of the SAJ Policy, Legal Affairs and Intellectual Property Committee. |
| Launch date | 5 October 2026 (announcement and publication of the recommendations and research report; actual date) |
| Applicable area | Individual income tax filing, year-end tax adjustments, final tax returns, salary payment reports, resident tax, social insurance, benefits, and tax filing and payment by sole proprietors and people with side jobs |
| Location | 1-2-21 Fujimi, Chiyoda-ku, Tokyo, PCA Building (PCA headquarters) |
| Quantitative Effects | An estimated ¥100 billion to ¥300 billion in costs is spent across society each year on year-end tax adjustments |
| Source | Software Association of Japan website. The UK survey included local interviews with HMRC, software vendors, and accounting and tax professionals. |
Items this document does not state (9)
These are items the company does not state in this document. We do not leave them blank, nor fill them in from other sources or by inference.
The reasons the company gives
The company's own explanation, not something inferred from the numbers.Social systems for individual income tax filing, including final tax returns and year-end tax adjustments, still retain annual processing based on paper. Although digitization is progressing, the processes as a whole have not been redesigned around digital operations.