Deep Dean’s advanced reasoning engine automates compliance with Japan’s updated lease accounting regulations

TOKYO – Fast Accounting (TOKYO: 5588), a leader in enterprise-grade accounting AI, announced the launch of a new AI-powered solution designed to streamline compliance with Japan’s updated lease accounting standards. The announcement was made at the SAP NOW AI Tour Tokyo & JSUG Conference on August 6, 2025.

Understanding Japan’s New Lease Accounting Rules

Following revisions to IFRS 16, Japan’s Accounting Standards Board introduced new lease accounting standards in September 2024 to align more closely with international frameworks. These standards—effective for fiscal years beginning on or after April 1, 2027—require companies subject to Japan’s Financial Instruments and Exchange Act (including all publicly traded companies) to capitalize most lease agreements, including those involving real estate, equipment, and vehicles. With the compliance deadline approaching, accounting teams across Japan are preparing for a significant operational shift.

What Sets the New AI Agent Apart

Fast Accounting’s new Lease Accounting AI Agent builds on its proprietary AI Accounting Agent platform and is purpose-built to handle the complexities of the new lease regulations.

Powered by an AI-OCR engine trained on more than 200 million accounting documents, the solution can accurately digitize even the most complex lease agreements—contracts that often challenge traditional OCR tools. Once digitized, the company’s signature AI engine, Deep Dean, applies judgment logic tailored to the new accounting rules, determining the appropriate treatment with precision.

This lease-specific agent also integrates with other specialized agents in the Fast Accounting ecosystem, managing tasks like electronic signatures and journal entry creation. The result is a fully automated end-to-end workflow—from contract ingestion to booking—designed for speed, accuracy, and scalability. As accounting standards evolve and operations become more complex, the system is engineered to scale and adapt alongside.

Note: PDF-format contracts are required to use this solution. Fast Accounting provides optional document scanning services through its nationwide scanning centers to support onboarding.

Keitaro Mori, CEO of Fast Accounting, said “Most solutions on the market offer piecemeal tools like OCR or data extraction—but stop short of delivering a truly integrated experience. What makes Deep Dean unique is its ability to go beyond reading documents. It interprets them, makes accurate accounting decisions based on the latest standards, and then hands off seamlessly to downstream processes like journal entries and e-signatures. We are not just improving efficiency—we are redefining how accounting is done.”

He added, “At Fast Accounting, we are focused on solving the real, everyday challenges that accounting teams face. Through what we call the Accounting Singularity, our mission is to free professionals from manual, repetitive tasks so they can focus on what matters most—strategy and value creation.”

About Fast Accounting

Redefining Accounting Through the Accounting Singularity

Fast Accounting is an AI company transforming enterprise accounting through intelligent automation. By combining proprietary large language models, computer vision, and deep domain expertise, the company delivers purpose-built AI solutions to major corporations and accounting software providers. Fast Accounting’s mission is to achieve the Accounting Singularity—a future where accounting teams are liberated from routine tasks and empowered to lead strategic transformation.

For more information, visit: https://www.fastaccounting.ai/

Please note that this English version is based on the original press release in Japanese. It is provided to help non-Japanese readers understand the announcement. In case of any differences in interpretation, the Japanese version should be considered the official statement.

Contact

Akio Kobayashi, Investor Relations
Fast Accounting
ir@fastaccounting.co.jp