About

What Sets Us Apart

Mehnert Accounting Services (MAS) LLC was founded with a simple but powerful philosophy: clients deserve a higher level of personal attention, where experienced professionals remain closely involved from the first conversation to the final deliverable.

Although MAS is a newly formed firm, it is built on a strong foundation. Founder Justin Mehnert, CPA, has spent more than a decade performing audits, consulting engagements, and 990 preparation for governments and nonprofits across New Mexico. This experience — gained at an established firm — now fuels a practice designed to be more agile, more attentive, and more aligned with the needs of organizations that value quality and consistency.

At MAS, clients receive:

  • A trusted partner who understands the unique landscape of New Mexico governments and nonprofits
  • Exceptional attention to detail
  • Knowledgeable, timely communication
  • A collaborative approach grounded in integrity

With MAS, you can depend on having a firm that is invested in your success, committed to transparency, and dedicated to delivering work you can rely on.

MAS LLC operates out of Belen in Valencia County, New Mexico

Our Leadership

Professional Affiliations and Certifications: Certified Public Accountant (CPA)

Education: BBA with a concentration in accounting, University of New Mexico (UNM)

Biography: Justin Mehnert brings a blend of discipline, analytical skill, and New Mexico‑focused experience to his work. Before beginning his accounting career, Justin enlisted in the U.S. Army as an intelligence analyst, an experience that shaped his commitment to accuracy, integrity, and mission‑driven service. After completing his military service, he attended the University of New Mexico and has since dedicated his public accounting career to serving NM governments and not-for-profits.

Outside of work, he enjoys spending time with his wife and children, working on his hobby ranch in Valencia County, and hiking the bosque.

Justin Mehnert, CPA