- Call Us : 213 738 6000
- Fax Us : 213 738 6062
- Email Us : [email protected]
- Address : 3435 Wilshire Blvd #600 Los Angeles, CA 90010
- Mon - Fri 8:30 - 17:30
Meet the leadership behind ABC CPAs — supported by a team of experienced CPAs, enrolled agents, tax specialists, and consultants serving clients across all 50 states. Together, our professionals deliver trusted accounting, tax, and advisory services that help businesses and individuals achieve financial confidence and compliance across the U.S.
Meet the leadership behind ABC CPAs — supported by a team of experienced CPAs, enrolled agents, tax specialists, and consultants serving clients across all 50 states. Together, our professionals deliver trusted accounting, tax, and advisory services that help businesses and individuals achieve financial confidence and compliance across the U.S.
ByungChan Ahn, CPA
President / Managing Partner
Our Extended Network
Behind every engagement is a dedicated team of professionals specializing in audit, taxation, and business advisory.
ABC CPAs collaborates with specialists across industries to deliver comprehensive, practical, and strategic solutions nationwide.
ByungChan Ahn, CPA
Managing Partner, ABC CPAs
Los Angeles, California, USA
Byung Chan Ahn, CPA, is the Founder and Managing Partner of ABC CPAs, an accounting and advisory firm he established in Los Angeles in 1993. For more than three decades, he has provided tax, audit, and business advisory services to corporations and individuals throughout the United States.
Mr. Ahn has worked extensively across a wide range of industries, including IT, healthcare, manufacturing, distribution, food and beverage, construction, and professional services. He offers customized tax and financial strategies tailored to each client’s business environment, building ABC CPAs into a trusted firm known for both technical excellence and professional integrity
Over the past twenty years, he has provided mergers and acquisitions (M&A) advisory services to small and mid-sized companies with annual revenues between $10 million and $200 million, helping them integrate tax, accounting, and financial structures to maximize corporate value and achieve sustainable growth. He also holds real estate broker licenses in both California and Nevada, which allow him to combine deep expertise in taxation, financial analysis, and real estate transactions
In addition to his accounting career, Mr. Ahn founded BCFi, a FinTech company that developed and launched an innovative online and mobile platform providing real-time financial data and automated profit-and-loss statements for multiple business entities. His leadership in BCFi demonstrates not only his financial expertise but also his forward-thinking understanding of technology and its role in the future of accounting.
His professional philosophy is grounded in expertise, integrity, and trust. Rather than pursuing short-term results, Mr. Ahn emphasizes long-term financial stability and growth, positioning himself as a reliable partner clients can depend on for decades.
Mr. Ahn has served as the 19th President of the Korean American Society of CPAs (KASCPA) and previously as the 33rd President of the Korean-American CPA Society of Southern California. He is also a Mentor at the Korea Innovation Center Silicon Valley (KICSV) and a Director of the Korean American National Museum, where he continues to contribute to professional development and community leadership.
Beyond his profession, he has served as President of the Youth Volunteers Organization (2013–2017) and President of the Western Kendo Federation (2019–2021), demonstrating a lifelong commitment to leadership and service.
Outside the office, Mr. Ahn is a Kendo master and dojo head, sharing the spirit of discipline and respect with his students. He is also a passionate saxophone player and golfer, finding balance between professional dedication and personal well-being. He resides in Los Angeles County with his wife and three sons, where he has built a life rooted in family, culture, and community.
He also operates the “안병찬 in USA” YouTube channel, which has grown to more than 66,000 subscribers, providing clear and practical insights on U.S. taxation, retirement, and financial planning for the Korean-American community.
Publications & Media Activities
Mr. Ahn is an accomplished author and media commentator who has played a leading role in making accounting and tax knowledge accessible to the public. His book “The Tax Secrets the Wealthy Already Know” (2006) became a national bestseller, while “Having Confidence with IRS Audit” (2013) is widely regarded as a practical guide for both tax professionals and individual taxpayers. He also produced the “QuickBooks Pro 2000 Guidebook and Lecture Video Series” (2000), which helped lay the foundation for computer-based accounting education in the Korean-American community.
Since 1997, he has written columns for The Korea Times and hosted live radio tax seminars on Radio Korea (AM 1530) and Radio Seoul (AM 1650) for more than 25 years, providing consistent, trusted education on U.S. tax and finance to Korean-speaking audiences. His work as an author, educator, and broadcaster has made him a recognized bridge between the United States and Korea in the field of cross-border taxation and financial education.
Mr. Ahn earned his Master of Business Taxation (MBT) degree from the University of Southern California (USC), where he conducted advanced research on individual, corporate, and trust taxation.
ByungChan Ahn, CPA
President / Managing Partner
Our Extended Network
Behind every engagement is a dedicated team of professionals specializing in audit, taxation, and business advisory.
ABC CPAs collaborates with specialists across industries to deliver comprehensive, practical, and strategic solutions nationwide.
ByungChan Ahn, CPA
Managing Partner, ABC CPAs
Los Angeles, California, USA
Byung Chan Ahn, CPA, is the Founder and Managing Partner of ABC CPAs, an accounting and advisory firm he established in Los Angeles in 1993. For more than three decades, he has provided tax, audit, and business advisory services to corporations and individuals throughout the United States.
Mr. Ahn has worked extensively across a wide range of industries, including IT, healthcare, manufacturing, distribution, food and beverage, construction, and professional services. He offers customized tax and financial strategies tailored to each client’s business environment, building ABC CPAs into a trusted firm known for both technical excellence and professional integrity
Over the past twenty years, he has provided mergers and acquisitions (M&A) advisory services to small and mid-sized companies with annual revenues between $10 million and $200 million, helping them integrate tax, accounting, and financial structures to maximize corporate value and achieve sustainable growth. He also holds real estate broker licenses in both California and Nevada, which allow him to combine deep expertise in taxation, financial analysis, and real estate transactions
In addition to his accounting career, Mr. Ahn founded BCFi, a FinTech company that developed and launched an innovative online and mobile platform providing real-time financial data and automated profit-and-loss statements for multiple business entities. His leadership in BCFi demonstrates not only his financial expertise but also his forward-thinking understanding of technology and its role in the future of accounting.
His professional philosophy is grounded in expertise, integrity, and trust. Rather than pursuing short-term results, Mr. Ahn emphasizes long-term financial stability and growth, positioning himself as a reliable partner clients can depend on for decades.
Mr. Ahn has served as the 19th President of the Korean American Society of CPAs (KASCPA) and previously as the 33rd President of the Korean-American CPA Society of Southern California. He is also a Mentor at the Korea Innovation Center Silicon Valley (KICSV) and a Director of the Korean American National Museum, where he continues to contribute to professional development and community leadership.
Beyond his profession, he has served as President of the Youth Volunteers Organization (2013–2017) and President of the Western Kendo Federation (2019–2021), demonstrating a lifelong commitment to leadership and service.
Outside the office, Mr. Ahn is a Kendo master and dojo head, sharing the spirit of discipline and respect with his students. He is also a passionate saxophone player and golfer, finding balance between professional dedication and personal well-being. He resides in Los Angeles County with his wife and three sons, where he has built a life rooted in family, culture, and community.
He also operates the “안병찬 in USA” YouTube channel, which has grown to more than 66,000 subscribers, providing clear and practical insights on U.S. taxation, retirement, and financial planning for the Korean-American community.
Publications & Media Activities
Mr. Ahn is an accomplished author and media commentator who has played a leading role in making accounting and tax knowledge accessible to the public. His book “The Tax Secrets the Wealthy Already Know” (2006) became a national bestseller, while “Having Confidence with IRS Audit” (2013) is widely regarded as a practical guide for both tax professionals and individual taxpayers. He also produced the “QuickBooks Pro 2000 Guidebook and Lecture Video Series” (2000), which helped lay the foundation for computer-based accounting education in the Korean-American community.
Since 1997, he has written columns for The Korea Times and hosted live radio tax seminars on Radio Korea (AM 1530) and Radio Seoul (AM 1650) for more than 25 years, providing consistent, trusted education on U.S. tax and finance to Korean-speaking audiences. His work as an author, educator, and broadcaster has made him a recognized bridge between the United States and Korea in the field of cross-border taxation and financial education.
Mr. Ahn earned his Master of Business Taxation (MBT) degree from the University of Southern California (USC), where he conducted advanced research on individual, corporate, and trust taxation.
