Individual and corporate services

Muso & Co.


Muso & Co. provides a variety of accounting services and tax preparation services for individuals and corporations throughout the United States. In the U.S., all accounting and tax preparation services can be performed by an accountant in any state. Although Muso & Co. has offices in California, Nevada, and Texas, we can assist clients throughout the United States for their accounting and tax preparation needs. If you have any questions for accounting or tax-related matters, please contact us anytime.

Corporate ServicesIndividual Services


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.

Recommended for the following people!

I need to outsource our accounting operations.

For clients whose workload is still too small to hire a full-time accountant and who are considering outsourcing their accounting work, Muso & Co. offers accounting services in which our accounting professionals, who are well versed in accounting operations, perform all accounting tasks on behalf of our clients. In providing this service, we also offer the establishment of a business system from the standardization of accounting operations to the preparation of financial statements.

I want to expand the business into the U.S., but I’m not sure how to do it.

For those who would like to expand their business to the U.S. and expand overseas but do not know how to do it, Muso & Co. provides one-stop support for establishing a corporation in the U.S., supporting various procedures such as visa-related procedures, and building a business system and internal operations. 

I want to file a tax return in the U.S. but do not know how to do it

For clients who want to file their tax returns in the U.S., but are not familiar with the process and do not have the time to do so, Muso & Co. can handle all procedures related to tax returns on their behalf, whether they are individuals or corporations.

I want to invest in real estate in the U.S. but don’t know where to start.

For clients who want to apply their surplus funds to real estate investment but do not know the details of real estate investment in the U.S., Muso & Co. offers consulting services related to U.S. real estate investment and taxation.

Realestate Investment

Our Features

Proactive and Flexible

We prioritize listening carefully what you want to do, and always be a proactive attitude of making the first move. We are quickly offer advice and suggestions, and then contact you to confirm how you have understood those suggestions.

Services That Prioritize Results

Whatever the client’s situation, our priority is to achieve their goals. If you are not satisfied with the results, we will thoroughly discuss the situation with you and propose further measures and solutions. Your success is our final goal.

Speedy Response

We will respond quickly to outcome perfect results within the allotted period. In order to avoid making mistakes, it is very important to keep abreast of the latest information and to take prompt action.

Reasonable Service Charges

By using the latest accounting system technologies, Muso & Co. can efficiently perform financial charting, tax processing, tax return preparation, and various payment tasks in a shorter time. These operational improvements allow us to provide our clients with higher quality services at a lower cost. In addition, we always strive to provide our clients with an estimate in advance of any work that exceeds a monthly fee, so that they can use our services with confidence.

Aiming for harmony with our customers

Muso & Co. works with your team members and other professional teams you hire to help succeed in the business.
As one of your team members, we are committed to working in harmony with your members.

Inquiry Form

Contact Information





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