Partners Beyond Your business Parnter!
Joseph N. Ayoub, CPA, EA


Joseph Ayoub has provided an array of accounting services ranging from general accounting to auditing, Joseph Ayoubconsulting and financial analysis, and tax services for over 16 years. Joseph is dedicated to helping his business and individual clients keep more of what they earn by diligently preparing corporate and individual tax returns, sorting out property tax issues and providing comprehensive financial analysis including audits.

His accomplishments in the accounting field include: Senior Auditor with the Accounting firm Arthur Andersen, acting as Assistant Controller for the organizing committee of the World Cup-Soccer, working as a member of a month end close team that closed the books of a $1.8 billion dollar company in five days and working as a Project Manager for database-driven credit system, which enabled management to quantify 2.4 million in annual credits.

Education and Affiliations

  • Bachelor of Science in Accounting
  • Certified Public Accountant licensed in California.
  • Enrolled to Practice before the Internal Revenue Service (EA)


Marcos sidhum, cpa



Marcos obtained his B.S. in Accounting from California State University, Long Beach. He has more than 13 Marcos Sidhumyears of public accounting experience providing audit, accounting, tax and consulting services. Marcos served a variety of clients in the areas of manufacturing, real estate, retail industries and Not-for-profit organizations. He is a member of the California Society of Certified Public Accountants and the American Institute of Certified Public Accountants. Marcos also has experience in representing companies and individuals before the Internal Revenue Service and the Franchise Tax Board.

Marcos worked in the tax department for McGladrey as a Senior, Assurance Manager for Deloitte & Touché handling publicly traded companies and Certified Audit Manager for a National CPA Firm handling Audits and Taxes for Employee Benefits Plans and Non Profit organizations.

Education and Affiliations

  • Bachelor of Science in Accounting
  • Certified Public Accountant licensed in California

Our Offices

Corona Office
268 North Lincoln Avenue #8 Corona, CA 92882
Tel: (951) 273-9090
Fax: (951) 848-0660

Torrance Office

3655 Torrance Blvd. 3rd Floor
Torrance, CA 90503

Tel: (310) 792-3700
Fax: (310) 362-0429

Irvine Office
7700 Irvine Center Drive, 8th Flr
Irvine, CA 92618

Tel: (949) 484-9302