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About Us

About Our Firm

For over 20 years, Olson & Cahill Tax Services, Inc. has been providing quality, personalized financial guidance to local individuals and businesses. Olson & Cahill's expertise ranges from basic individual and business tax return preparation and accounting services to more in-depth services such as audit representation, financial and tax planning.

The combination of our expertise, experience and team mentality of our staff assures that every client receives the close attention they deserve. Our dedication to high standards, customer service, and work ethic is the reason our clients return year after year.

Olson & Cahill Mission Statement

Our mission is to provide innovative, focused, and high quality tax, accounting and financial consulting services designed specifically for each client.  We strive to assist each client in minimizing their individual or business tax burden while assisting them in achieving their unique financial goals. We treat each client with respect, courtesy and understanding.  We effectively communicate and listen to each client, help them to improve their organizational skills, and increase overall accountability. Olson & Cahill Tax Services, Inc. is dedicated to meeting these goals with high standards of excellence and professionalism. We have been a staple of Huntington Beach, Orange County and Southern California's business community for years, and pride ourselves on the level of esteem we have earned.

Our Team

Dan V. Olson B.A. in Business Administration USD, Masters of Science Degree in Taxation, GGU
Certified Public Accountant, Certified Financial Planner

Dan Olson is a California Certified Public Accountant and a Certified Financial Planner. As a Certified Public Accountant, Dan enjoys working with clients on their accounting issues, tax return preparation, and tax/transactional planning. Dan can represent taxpayers before the IRS and state tax agencies. He is a member of the American Institute of Certified Public Accountant, and the California State Society of Certified Public Accountants. Dan has a Bachelor of Arts degree in Business Administration with an emphasis in Accounting from the University of San Diego and also holds a Masters of Science degree in Taxation from Golden Gate University. Dan has over 35 years of experience in the field of accounting and taxation. Dan worked for 15 years in various private industry tax management positions before opening his own accounting and tax practice in 1993.

Dan is a native Southern Californian who enjoys spending time with his wife Susie and their children Monica & Shawn. When not servicing clients Dan also enjoys and has a passion for exercise, golf, ping pong, tennis, reading and travel.

Nancy M. Cahill (714) 374-2053 B.S. University of Illinois
Enrolled Agent, Quickbooks Certified ProAdvisor

As a licensed Enrolled Agent Nancy is an expert in tax return preparation, tax planning, and can represent taxpayers before the IRS and state tax agencies. She is a member of the National Association of Enrolled Agents, and the California Society of Enrolled Agents. Nancy is also a Quickbooks Certified ProAdvisor, a designation awarded to professionals who have achieved a special level of Quickbooks expertise. Nancy has worked in the accounting field for nearly 30 years.

Nancy grew up in the Chicago area and moved to California in 1980 after achieving a Bachelor of Science degree from the University of Illinois. Nancy and her husband Jeff enjoy living in Huntington Beach where they are avid tennis players. Nancy is a fitness enthusiast, who enjoys running and when she slows down enjoys gardening.