• Welcome to Concord, California!

    • Sam's_Club_First_Friday.jpg
    • Chairman's-Circle-Platinum-for-Web-2017-3.jpg
    • 388.jpg
    • Golden-State-Lumber-Ribbon-Cutting-for-Web.jpg
    • Chairman's-Circle-Gold-for-Web-2018-2.jpg
    • Verand-Ribbon-Cutting-for-Web.jpg
    • 389.jpg
    • Chairman's-Circle-Silver--Bronze-for-Web-01-08-18.jpg
    • Spaghetti_Factory_for_Web_2015.jpg
  • O'Sullivan & Associates

    • Accounting-Certified Public
    2487 Salvio St
    Concord, CA 94520
    (925) 691-6520

    About Us

    Home

    If you are looking for a blend of personal service and expertise, you have come to the right place! We offer a broad range of services for business owners, executives and independent read more
    • About

      Home

      If you are looking for a blend of personal service and expertise, you have come to the right place! We offer a broad range of services for business owners, executives and independent professionals. We are experienced and we're friendly. Please call us for a free initial consultation.
      Tax Services
      Tax Preparation
      Tax Planning
      Tax Problems
      Business Services
      Small Business Accounting
      Payroll
      Part-Time CFO Services
      QuickBooks Services
      Why Quickbooks
      QuickBooks Setup
      QuickBooks Training
      Services for Individuals
      Personal Financial Planning
      Estate Planning

    • Highlights

    • Whom to Contact

      • Tom O'Sullivan
        Phone: (925) 691-6520