Supporting Municipal Fiscal Decisions with Data: Demonstration of Tax Revenue Estimation Function for 'Acrocity × BI'

Gcom Holdings Co., Ltd. (Headquarters: Hakata-ku, Fukuoka City, Fukuoka Prefecture; Representative Director: Daisuke Hiraishi) conducted a demonstration project for a tax revenue estimation function to be installed in its EBPM support service 'Acrocity × BI' for local governments, in collaboration with Meguro City, Tokyo. This demonstration was carried out from November 2025 to February 2026, aiming to enhance decision-making in municipal fiscal management through the visualization of future revenue outlooks. This demonstration is a pioneering initiative nationwide. Multi-faceted Visualization of Future Tax Revenue The tax revenue estimation function integrates administrative data such as resident information and taxation data installed in Acrocity × BI with open data related to macroeconomics and industrial structure, and automatically calculates future tax revenue trends for local governments using statistical learning models. It estimates tax revenue for the next 10 years using sophisticated prediction models trained on a wide variety of data for each tax item, such as individual inhabitant tax and fixed asset tax. This supports fiscal decisions based on objective evidence. Project Details Cooperating Local Government: Meguro City, Tokyo (Planning and Management Division) Period: November 2025 - February 2026 Future tax revenue estimation using past taxation data, population structure data, and macroeconomic data Verification of estimation accuracy for individual inhabitant tax Evaluation of the validity of estimation results and prediction rationale Evaluation of operability and usability through staff interviews Demonstration Results In interviews and questionnaires conducted after the demonstration, the estimation method received positive feedback for saving time on evidence collection, being based on reliable data, and having clear reasons for selecting macroeconomic indicators used in the estimation, making the evidence clear. As there is room for improvement in screen display and operation methods, quality will be enhanced by continuing demonstrations with multiple local governments in the future. Furthermore, the content of this demonstration was introduced in a presentation by Mr. Takeyama of the Meguro City Planning and Management Division at the '55th Local Administration and Management Study Group.' Archived distribution is available, so please take a look. Please log in from the URL below to view the archived video. https://lg-institute.gyoseiq.co.jp/discussion/57/contents Future Developments Based on the knowledge gained from this demonstration, Gcom Holdings will proceed with the advancement of tax revenue estimation and the expansion of its application scope to municipal operations. In the future, the company plans to introduce the system to local governments nationwide and add new functions to promote EBPM. Contact Information for This Matter Gcom Holdings Co., Ltd. Local Government Management Research Institute (Contact: Yamaguchi) Email: ebpm@gyoseiq.co.jp Phone: (Representative) 092-629-2266 (Direct Line) 070-4419-5648 Website: https://lg-institute.gyoseiq.co.jp/public/research/ebpm [Supplementary Information] [About 'Acrocity × BI'] 'Acrocity × BI' is an EBPM support tool that anonymizes resident data of local governments and automatically generates graphs and maps. By connecting to core information systems, it automatically aggregates a wide range of data such as resident information, welfare information, water utility information, and internal information, and visualizes the aggregated results across departments, enabling even staff with low data literacy to utilize the data.