History

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History of Opti

2010

Established as an international indirect tax firm, receiving orders for projects from JETRO and METI

2011

Begins sales of OneSource as the primary distributor in Japan

2013

Established group company OneSource Japan K.K.

2014

Moved to Kioicho Park Building (Nagatacho)

2016

Head office moved to Ogawa Building (Otemachi). Began handling tax engines.

2019

Number of affiliated suppliers exceeded 200, and tax filing systems were established in 90 countries.

2023

Launch of MyOPTI, a tax filing service

2024

Become Andersen Global's Collaboration Firm

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