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Our Firm

Mark J Peniston CPA LLC has been locally owned and operated in San Antonio, Texas since 2015.  Through the use of advances in software and technology, we can provide services to individuals and small business both locally and across the United States.

The firm is licensed to practice public accounting by the Texas State Board of Public Accountancy (TSBPA).  All professionals designated as CPAs are licensed to practice public accounting and comply with the continuing education requirements of the TSBPA.

San Antonio River Walk


"Honesty is more than not lying.  It is truth telling, truth speaking, truth living, and truth loving."

-James E. Faust


"With integrity, you have nothing to fear, since you have nothing to hide.  With integrity, you will do the right thing, so you will have no guilt."

-Zig Ziglar


"The best way to find yourself is to lose yourself in the service of others."

-Mahatma Gandhi


"Perfection is not attainable, but if we chase perfection, we can catch excellence."

-Vince Lombardi

Our Core Values

Our Staff

Mark J Peniston
Mark J Peniston, CPA

Mark began his accounting career in 2004 and has industry experience in banking, financial services, insurance, real estate, non-profit, and defense contracting.  He has worked for both large Fortune 500 companies and small privately-held businesses.  He is a licensed Certified Public Accountant in both Texas and Florida, and is a member of the American Institute of CPAs as well as the state and local chapters.

Mark married the love of his life, Hannah Joy, in 2006, and they have two sets of identical twin boys.  He believes strongly in the strength of family, community, and service.

Mark J Peniston
Mark J Peniston