FRANK L. ZWIENER, EA.

Frank L. Zwiener E.A. is a licensed tax professional who specializes in helping business owners and entrepreneurs resolve serious IRS and state tax issues. He supports clients in all 50 states and from around the world. Frank L. Zwiener has personally helped his clients resolve multi-millions worth of back taxes. His clients typically have a high 5 -7 figure in debt to the IRS. Frank L. Zwiener is an Enrolled Agent. Licensed by the US Department of Treasury. Specializing in Tax Representation before the Internal Revenue Service. Mr. Zwiener holds a Fellowship with the National Tax Practice Institute. He has also completed Session 1 & Session 2 of the US Tax Court Practitioner Services.

Established in 2003:

2003 Tax Preparation, Bookkeeping, and Payroll.
2006 Operated with a Public Accounting Firm.
2012 Obtained Enrolled Agent’s License.
2015 Fellow of National Tax Practice Institute.
2016 Session 1 & Session 2 US Tax Court Practitioner’s Service.

Results

I work with you on a personal level to determine the best solutions for your unique needs, then leverage our seasoned expertise to achieve the best possible results.

Relationships

I am your trusted partner in success. My firm is large enough to offer a full range of professional services at a fair price, but small enough to give you the individual attention that you deserve.

Relief

Rest assured that when a need arises, my firm is ready and capable to handle everything for you so you can focus on what matters most to you.

At Armstrong & Zwiener , we believe that every small business deserves the care, strategy, and financial insight to grow like a big business. And at the core of that belief stands Denise—our owner’s right-hand wo-man and a true champion for small businesses

Denise brings her Bachelor’s Degree in Business Administration and International Business to ensure the firm’s operations are both efficient and effective. Since earning her degree in 2009, she has specialized in monthly accounting, bookkeeping, and payroll, providing essential services that help the firm and its clients stay organized and on track.

“Small businesses aren’t just clients to me—they’re dreams, hard work, and people I genuinely care about.” — Denise

Denise is deeply committed to integrity, client satisfaction, and providing strategic guidance. By managing the day-to-day office operations and streamlining workflows, she focuses on delivering accurate financial services while fostering a trusted, client-centered environment.

Outside of the office, Denise enjoys spending quality time with her family, getting involved in her community, and serving in her local church. Her faith shapes both her personal and professional life, instilling a deep commitment to integrity and the well-being of others. Denise is passionate about creating meaningful connections, offering personalized support to clients, and empowering those she works with to thrive.

Tara Street Receptionist and Tax Professional/ Accounting Specialty Apprentice

Tara Street is a dedicated professional at Armstrong CPA & Zwiener EA, where she brings her expertise and passion for organization to client service. As the first point of contact for clients, Tara ensures a welcoming and efficient experience while supporting the firm’s tax and bookkeeping processes.

Tara has a rich background in optics, where she honed her attention to detail and customer care skills over years of working as an optician and lab technician. Transitioning to the field of accounting, she has embraced her new role with enthusiasm, applying her meticulous nature to streamline client document handling and optimize tax preparation workflows.

Currently pursuing a degree in accounting, Tara is committed to expanding her knowledge and building a strong foundation in tax and financial services. Her personal journey of resilience and growth is reflected in her professional ambitions, as she aims to help clients achieve financial clarity and peace of mind.

When not at work, Tara devotes her time to her two children and enjoys exploring new hobbies like cooking, embroidery, and puzzles. Her goal of financial freedom and family-centered living drives her both personally and professionally, making her an invaluable member of the Armstrong CPA & Zwiener EA team.

Stephanie C. Mihelich Experienced Accounting and Bookkeeping Professional

Stephanie is a dedicated professional with over 10 years of experience in accounting and bookkeeping. With a particular passion for the bookkeeping aspect of accounting, Stephanie excels in maintaining accurate financial records, organizing data, and ensuring smooth financial operations. Building close and trusted relationships with clients is a cornerstone of Stephanie’s approach, fostering collaboration and delivering personalized solutions tailored to their needs. Known for being well organized, Stephanie has been instrumental in helping businesses achieve clarity and transparency in their finances.

Beyond the numbers, Stephanie is a devoted spouse and proud parent to four children. Family time is a cherished priority, with movie outings being a favorite way to relax and connect. Balancing professional dedication and personal values, Stephanie embodies a well-rounded approach to life and work

Maggi Heward believes that the American Dream is alive and well. The caveat: it takes work. Financial and tax strategies are key in achieving your American dream.  Maggi started her accounting career in 2022 while she was finishing her undergraduate degree. She now holds a Master of Accounting and is working towards becoming a Certified Public Accountant (CPA). In her free time, Maggi enjoys sewing, crafting, gardening, farming, and spending time with her husband.