Muso & Co.

U.S. & Japan Certified Public Accountant (CPA) Firm


Muso & Co. provides total support for accounting and tax returns for companies doing business in the U.S.. We also provide a wide range of services such as incorporation in the U.S., real estate investment, overseas expansion for Japanese companies, and management consulting. In the U.S., tax returns and accounting services can be handled by accountants in any state. If you are planning to expand into the U.S. or already have a business in the U.S., please feel free to contact Muso & Co..

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We provide support for U.S. market entry and management accounting consulting with a one-step-ahead approach.

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Accounting is the foundation of management

Muso & Co. specializes in corporate accounting, the foundation of company management. Our mission is not to focus only on accounting figures, but to provide management support to our clients.



Responding flexibly to changes in the business environment

Muso & Co. will build your future by flexibly responding to changes in your business environment and providing advice and solution proposals as appropriate.



Collaboration with Experts

Muso & Co., we work with a wide variety of professionals to quickly and accurately resolve various issues that arise in business.


Service List

Corporate Services

Muso & Co. assists all companies doing business in the U.S. with a variety of accounting and other services. We also provide tax filing services for corporate tax returns at affordable prices.

Accounting and Tax-Related Services

We provide support for accounting work, general accounting work, and corporate tax returns on behalf of our clients.

Establishing U.S. Corporation

We provide one-stop support for establishing a U.S. corporation, from administrative procedures to organization.


U.S. Real Estate Investment Support

We provide total support from the introduction of real estate agents to investment-related administrative procedures.


Management Consulting Services

We provide a wide range of support from the financial status of your business to general management consulting.

Individual Services

Whenever you earn income of any kind in the U.S., you must file a tax return by April of the following year. In principle, all of these tax returns must be filed in English, and many people may experience its difficulty. Muso & Co. can file the tax returns on behalf of individual clients perfectly with full Japanese language support. We also offer flexible services for other tax-related matters. We also handle tax returns for clients who do not reside in the U.S. For more information, please contact us.

Tax Return

Individual Tax Return Services

We prepare and file U.S. tax returns on behalf of our client.

Tax ID Number

Taxpayer Identification Number Acquisition Service

We provide services for obtaining an Individual Taxpayer Identification Number (ITIN) in the U.S. on behalf of our clients.

Our Goals

Your success is our ultimate goal!

Muso & Co. provides accounting, tax, and other business management advice to ensure the success of every client’s business. We quickly analyze your business issues so that you can be proactive and efficiently lead your business to success.


Providing Services Aimed at Cooperation

Muso & Co. is committed to working in unison with your employees as well as with other professional teams to help you succeed in your business.
As a member of your team, we are committed to working in harmony with your members.


The material and intellectual growth

Muso & Co. is committed to providing high quality accounting and tax services to our clients so that their businesses can be successful, and their lives can be spiritually happy. We also appreciate that we also can achieve financial and spiritual well-being, and we are committed to doing our best every day.

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Contact Information





P.O. Box 1785, 245 W. Garvey Ave, Monterey Park, CA 91754