About Us

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About MTA

We Are Committed to Serving Each Client On a Personal Level.

MTA is a full service, privately held CPA firm established in 1985 in Houston, Texas. Built on a reputation for client service, the firm delivers tax-compliant solutions through its tax preparation and consulting services. 

The firm is known for providing strategic tax services to:

  • high-net worth individuals
  • multi-generation families
  • closely-held corporations
  • partnerships
  • complex trusts

In 2022, Partner Rebecca McElroy succeeded Larry as President to the firm. She will lead MTA’s accounting and tax practices and direct the firm’s future growth. Additionally, Partner Jennifer Youngblood joined the leadership team as Vice President. MTA continues to focus on delivering trusted tax solutions for our clients.

With more than 30 years of experience, our team of seasoned professionals will help you define personal and professional financial goals and establish strategies to maximize achievement.


Our Culture

Quality, Accuracy, and Friendliness

MTA is a boutique tax service firm that values personal service. We are committed to a firm culture that fosters trust, respect and fairness. Loyal customers appreciate and value our friendly team who endeavor to deliver the highest quality and most accurate solutions year around. 

Firm History

In 1985, Larry Maddox and Joe Thomson founded Maddox Thomson & Associates to assist clients with compliance and advice on personal and business income tax matters. In 1999, the duo founded Horizon Wealth Advisors to advise and counsel beyond the tax business. Larry currently serves as the President of Horizon Wealth Advisors, and Joe continues to provide strategic tax advice to clients as a consultant to MTA. Founded on delivering the highest quality service and a commitment to develop meaningful long-term relationships, MTA continues to support our clients in achieving their financial goals.

Larry Maddox

Joe Thomson

Our Mission

Our mission is to develop long-term relationships with clients to deliver tax compliant solutions that support financial success.


We Hire the Best

Our team is our most important asset. We are approachable and solution oriented. We value the importance of getting to know our clients on a personal level. 


We Are Proactive

You can count on us to check in with you throughout the year to ensure deadlines are met and updates that may be applicable to you or your business.


We Are Hands-On

Our professionals stay in touch while they work on your taxes and financial matters. We help you understand the numbers on a tax return or financial statement. 


We Take a Partnership Approach

We strongly believe in developing relationships beyond tax preparation. Our team believes in transparency and communication through every step of the tax and financial planning process.


We Protect Your Privacy

At every point in our process, the confidentiality of your information is of utmost importance to us. We ensure that your information stays in trusted hands.

Membership Organizations

Texas Society of Certified Public Accountants

The Texas Society of Certified Public Accountants (TXCPA) is the largest, most influential association of accounting and finance professionals in Texas, dedicated to supporting one another, and promoting and protecting the value of the CPA designation.

Houston Estate & Financial Forum

The Houston Estate and Financial Form (HEFF) was organized on June 27, 1960, for the purpose of assisting the development and extension of professional skills in the field of estate planning and to foster cooperation among its members. HEFF was incorporated September 1, 1979.

Certified Public Accountants

The CPA designation distinguishes licensed accounting professionals committed to protecting the public interest. These professionals offer financial statement audits and other attestation services to help inform investors about the financial health of organizations.

Meet our Team