Shareholder Value

and Equity



As an established Certified Public Accounting firm, our commitment to stringent standards of ethics, maximum performance, and the highest level of client service, is beyond compromise.

A History of Success

Semple, Marchal & Cooper, LLP was founded in 1982 in Phoenix, Arizona. The firm has steadily grown over the years to become a preeminent, and highly respected, certified public accounting firm.

We are a full-service professional firm, dedicated to providing clients with services of the highest quality without compromising our responsibilities to those who rely on our objectivity. Our people, their technical breadth, depth, and experience, plus our clientele are our greatest strengths.


Qualifications to Serve

Semple, Marchal & Cooper, LLP is licensed throughout the Southwest.  The firm maintains the following Professional Licenses, Memberships and Registrations including:

  • American Institute of Certified Public Accountants
  • Public Company Accounting Oversight Board
  • Association of Certified Fraud Examiners
  • Arizona Society of Certified Public Accountants
  • Arizona State Board of Accountancy
  • Nevada State Board of Accountancy
  • Texas State Board of Accountancy*
  • California State Board of Accountancy
  • New Mexico State Board of Accountancy*
  • National Peer Review Committee

*Licensed through reciprocity


A Proven Business Philosophy

Because of our ongoing commitment to the highest industry standards, Semple, Marchal & Cooper has developed a program of staff selection, training and review to enhance the firm’s professional service capabilities.

Our partners and managers have the practical business experience required to understand and consult in client business planning matters based upon experience gained through decades of service in the accounting profession. We can support your client management team while still maintaining the objectivity and integrity of being professional independent certified public accountants.

Our firm’s economic and professional independence is assured and enhanced through the diversity and the large number of clients we serve.  The professional services and advice our clients receive comes from our training, knowledge and professional judgment gained through experience with a wide spectrum of clients in a variety of industries.

When choosing the best solution for your business and personal financial accounting needs, choose a firm that has the experience, the dedication, and the commitment to serve your needs for financial accounting, tax planning and compliance matters.


Planning for Success

Your decision to select Semple, Marchal & Cooper, LLP is the first major step on the road to your overall success.  We begin our process with a strategic analysis of your current business and personal accounting needs.  We then work with you and your team to develop a plan to assist in reaching your long-term goals.  Whether you are planning for growth or planning for retirement and transition of your business, we will work with you to create a plan that is effective, efficient and tailored to your specific wants and needs. 


Tailored to Meet Your Needs

A business needs to plan for success.  Not to plan for success, is to plan for failure.  Our goal is to create a financial plan that is tailored to meet every business and personal need. Goals and objectives planning combine the unique needs of our client’s company today with goals for the future. Our “Full Team Approach” to your financial accounting needs ensures that we are constantly monitoring your existing financial plan and balancing that plan with future goals and objectives you have developed.

Our team will provide you with an ongoing financial plan monitored to enable you to effectively review and assess your progress. For both your present and future planning requirements, we have the right combination of experience, dedicated staff and state-of-the-art technology to fulfill your financial accounting needs.