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About OC & Associates
Building Trust Through Transparency
The firm, originally established in 1992 and incorporated as Okamoto & Company, Inc. in 1996 was renamed to OC & Associates in May 2016. Our main office is conveniently located within walking distance from five subway stations. A subsidiary, OC & Associates Pte. Ltd. was established in October 2014 to assist clients in Singapore. OC & Associates Tax Co. was established in June 2016 to provide tax services lead by our team of CPTAs. Using technology, the office focus has been to consistently provide quality services to our clients in a transparent and efficient manner.
"The only way to build trust professionally or personally is by being trustworthy. " by Gerard Arpey, former CEO American Airlines
The relationship between our firm and our clients

Our Mission

To become and secure the position as the premier accounting service provider for foreign companies in Japan.

We strive to provide excellent service to our clients, tailoring our services to fit your specific needs whether it be a startup entity or a well established one through the retention of experienced, full–time personnel. This can take the form of simply a periodic review of your financial information to a complete outsourcing of your accounting functions. Our offices are able to keep our fees to a minimum using technology and incorporating transparency in our services. For example, our clients will have online access to their books so there is no need to wait until the next day for a response.
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