Award winning association of advisory and accounting firms

Languages Spoken: Japanese English Chinese

ROLEUP Inc. is a Japan-based professional services firm specializing in M&A advisory and transaction-related services. In addition, through its affiliated tax advisory firm, ROLEUP provides a broad range of services centered on tax compliance and tax advisory, while its audit firm delivers statutory audit services to both domestic companies in Japan and Japanese subsidiaries of global enterprises.

ROLEUP offers comprehensive support across the entire deal lifecycle, including buy-side and sell-side financial advisory, financial and tax due diligence, valuation, business due diligence, and post-merger integration (PMI) support.
The firm primarily serves private equity funds, financial institutions, and corporate clients, with a strong track record in small to mid-sized transactions in Japan. ROLEUP has experience across a wide range of industries, including IT and software, manufacturing, consumer services, healthcare, and business services.
Headquartered in Tokyo, ROLEUP works closely with domestic and international stakeholders and collaborates with legal, tax, and other specialized professionals to deliver practical, execution-focused solutions tailored to each transaction.

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A Message from the Managing Partner. Tatsuya Watanabe

ROLEUP’s vision is to be a trusted partner for clients navigating complex M&A and strategic transactions. We provide high-quality services that support corporate growth, ranging from due diligence and valuation to transaction execution, post-merger integration (PMI), as well as tax advisory services and global audit support.
By working closely with management teams, investors, and financial institutions, we aim to deliver clear insights, effectively manage risks, and support the creation of sustainable long-term value.
ROLEUP will work closely with Prime Global member firms across jurisdictions, particularly in the areas of M&A, due diligence, valuation, and post-merger integration (PMI), to deliver seamless support for cross-border transactions.
For matters involving local regulatory, tax, and accounting requirements, ROLEUP will collaborate with local member firms while sharing transaction experience and best practices. The firm is also committed to actively engaging in tax and audit referral-in engagements, leveraging its deep accounting and tax expertise in Japan to support inbound and cross-border transactions.
In addition, ROLEUP actively participates in Prime Global forums, knowledge-sharing initiatives, and joint learning opportunities, recognizing that continuous collaboration and professional exchange are essential to delivering high-quality services and sustainable growth.