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Cornerstone's philosophy is simple.  No business or person should pay any more in taxes than is required by law.  Put another way, render unto Cesar - but not a nickel more than you have to.  We keep that philosophy sharply in focus as we help our clients.  

Cornerstone's goal is to help our clients to minimize their overall tax burden - within the boundaries of the law.  Our governments, whether federal, state or local, each has the authority to demand their pound of flesh.  Each is a sovereign entity with the power to tax its citizens and residents.  Cornerstone is not in the business of dispensing tax advice that is contrary to well established tax law, merely for the purpose of pleasing its clients.  If you are looking for a tax advisor to tell you that you are not obligated to pay tax on your income, we respectfully ask you to choose another advisor.  


Cornerstone’s mission is to help businesses by designing and implementing proactive tax strategies that reduce the company’s overall tax burden or delay its tax liability. We provide both Federal
tax planning and return preparation services for small to mid-sized businesses. We can also assist business owners with their personal tax planning and tax return preparation. With prudent tax planning, Cornerstone can help your company cut its taxes.

Cornerstone Associates was founded by Samuel Theis. Sam graduated from California State University, Fullerton in 1996 with a Bachelor's degree in Accounting.  He went on to Law School at UCLA, where he graduated in 1999.  Sam is currently licensed to practice law in California and Michigan.  Sam is also a Certified Public Accountant in the state of Michigan.

Sam spent ten-plus years with Ernst & Young LLP working in both their tax consulting and audit practices.  Sam has considerable experience assisting fortune 500 companies with minimizing their tax obligations.  Sam has managed tax projects in the areas of capitalization, accounting methods, research tax credits, inventory and restructuring.  Sam's audit experience includes 3 years in Ernst & Young's Business Risk practice, where Sam managed all aspects of Sarbanes-Oxley (404) documentation, testing and compliances for several Fortune 500 companies.

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