About Book Pillar CPA

Welcome to Book Pillar CPA

Michael Cui is a CPA with deep expertise in business taxation, startup finance, and corporate controllership. He holds a BS in Business Administration (Finance), a BA in Philosophy, and a Master of Business Taxation from the University of Southern California. Michael is licensed to practice public accounting in both Washington and California.
Michael started his career at a regional CPA firm in Los Angeles, where he advised small business owners on tax planning and compliance. He went on to build accounting systems from the ground up at early-stage startups, then stepped into Controller roles at established companies in healthcare, gaming, and SaaS—leading financial operations, tightening accounting processes, and helping shape executive decision-making.
He founded Book Pillar CPA to serve small business owners seeking a trusted financial partner without the cost of a full-time hire. He believes that strong businesses create stronger communities, and that accounting goes beyond numbers—it’s about building long-term relationships and helping clients succeed.

We Are Committed to
giving you back time.

Running a business takes everything you’ve got. The last thing you should spend time on is reconciling accounts or wondering if your books are right. At Book Pillar CPA, we take the financial operations off your plate so you can focus on your goals and growing your business.

Ready To Work With A CPA Partner
Invested In Your Success?

Have questions about our services?
Reach out today to start a conversation.