Deron R. Harrington
Attorney & Certified Public Accountant
Most people don’t need a huge law firm or a complicated accounting practice. They need one highly capable professional who can step in, assess the full picture, and give clear, steady guidance when life, taxes, business, or family matters get complicated.
That’s the role I fill.
As one of the rare dual-licensed Attorney–CPAs in the country, I bring together the precision of a CPA, the legal strategy of an attorney, and the real-world judgment that only comes from decades of hands-on experience. Clients describe me as calm, analytical, and quietly powerful — the person you want beside you when the pressure rises.
I work with people from all walks of life — teachers, nurses, retirees, young families, tradespeople, small business owners, and high-net-worth and ultra-high-net-worth clients who simply want capable, respectful help they can trust.
How I Help
- Individual and family tax preparation
- Small business and self-employed tax returns
- Back taxes, IRS notices, audits, and payment plans
- LLC and S-Corp structure and tax strategy
- Cleaning up years of disorganized or late filings
- Wills, powers of attorney, and basic estate documents
- Probate guidance with clarity and compassion
- Asset protection for real-life risks
- Business contracts and disputes
- Business start-ups, formation, and launch planning
- Business purchases, sales, mergers, and acquisitions
- Litigation when a matter becomes serious
Many clients come to me anxious or overwhelmed. That ends quickly. I cut through the noise, explain what matters, eliminate what doesn’t, and give you a clear path forward. My clients routinely tell me they feel immediate relief once they understand the plan.
Why Clients Place Serious Matters in My Hands
I’m not a tax preparer who dabbles in law, and I’m not a lawyer who “knows some tax.” I’m fully trained, fully licensed, and deeply experienced in both disciplines. This gives clients an uncommon advantage:
- I prevent tax problems from becoming legal problems.
- I strengthen legal decisions by understanding their tax consequences.
- I handle IRS matters personally — not through assistants or outside counsel.
- I see your entire life, business, and financial picture as one integrated system.
Clients often describe me as providing “quiet power” — calm focus, steady judgment, and the ability to simplify even the most tangled issues.
A Deeper Advisory Capability When You Need It
Because of my background, I frequently guide clients beyond basic filings and into more complex planning:
- Multi-year tax planning and strategy
- Trusts, LLCs, and asset structures
- Family Office–style management
- Business start-ups, development, and long-term launch planning
- Business formation, contracts, and succession planning
- Business purchases, sales, mergers, and acquisitions
- Coordination of personal and business finances
- Serious IRS representation
- Courtroom strategy and litigation
I don’t posture or grandstand. My style is deliberate, precise, and effective.
Where This Depth Comes From
My career spans all sides of the tax and legal world — and that matters.
I’ve worked in public accounting, where precision and discipline are essential.
I’ve served in executive financial roles, seeing firsthand the pressures businesses face.
I’ve operated as in-house general counsel, solving problems before they explode.
And I’ve built years of experience in private practice, advocating for individuals, families, and entrepreneurs.
Combined, this gives me a rare, fully integrated understanding of the tax, legal, and financial challenges my clients face.
Before entering professional practice, I served both as an Infantry enlisted soldier and a Field Artillery Officer in the U.S. Army National Guard and U.S. Army Reserve, earning my commission through Officer Candidate School. That military foundation shaped my approach: disciplined, steady, mission-focused, and committed to the people I serve.
Academically, I hold a degree in Accounting, advanced graduate work in tax and finance, and a law degree. I’m licensed as an Attorney and CPA in both Texas and Oklahoma and admitted before multiple state and federal courts, including the U.S. Tax Court and the U.S. Supreme Court.
My Commitment
My commitment is simple: to protect you, to guide you, and to remove the stress from your tax and legal life so you can move forward with clarity and confidence.
Whether you’re organized or overwhelmed, ahead or behind, starting out or starting over — you’re in the right place. I’ll help you get things sorted out and give you a steady path forward, one step at a time.
CALL NOW
832-605-6131
Serving Clients Worldwide
We maintain a professional office presence in Houston, serving clients throughout Texas and beyond.
Meetings are by appointment to ensure privacy and dedicated time for each client.
For clients outside Houston, we can arrange private, professional meeting space in major U.S. and international business centers.
11200 Broadway St, Ste 2743, Pearland, TX 77584
DERON R. HARRINGTON, JD, CPA
Attorney • Certified Public Accountant • Executive Counsel
(832) 605-6131 • drhjdcpa@gmail.com
EXECUTIVE PROFILE
Dual-licensed Attorney and CPA with nearly 30 years of high-impact leadership across law, finance, taxation, operations, risk management, and executive governance. I have built firms, run billion-dollar trading and commercial operations, advised boardrooms, dismantled broken institutional systems, and protected families, businesses, and organizations through some of their most complex legal and financial challenges.
My career spans courtrooms, C-suites, regulated markets, mergers & acquisitions, family offices, corporate reorganizations, and high-pressure dispute resolution. I operate with a holistic, strategic, force-multiplying approach that integrates legal, tax, financial, operational, and risk insight into one advisor.
I am the person organizations call when stakes are high, complexity is real, and precision matters.
EXECUTIVE & LEGAL EXPERIENCE
Harrington Law / Harrington CPA, PLLC — Managing Attorney & Principal CPA
Boutique legal and financial practice delivering high-judgment counsel in: asset protection and wealth defense; tax strategy and IRS controversy; business advisory, governance, and corporate structure; mergers & acquisitions and commercial transactions; probate, inheritance conflicts, and estate administration; selective high-stakes litigation; and family office leadership and multi-disciplinary strategy. Serve entrepreneurs, executives, families, and high-net-worth clients requiring integrated legal–financial strategy. Known for quiet power, surgical judgment, and decisive execution.
MMLJ, Inc. — General Counsel & Senior Executive Advisor
Chief legal and advisory authority to a multi-entity corporate group. Directed all legal, regulatory, tax, financial, and compliance matters. Oversaw litigation strategy, corporate structure, asset protection, employment and governance issues, and risk management. Served as trusted strategic advisor to ownership on governance, capital structure, and long-range positioning.
Harrington, Carbone & Allison, LLP — Co-Founder & Managing Partner
Co-founded and built a successful CPA firm from inception into a respected regional practice. Led tax strategy, advisory services, firm operations, and business development. Negotiated and executed exit from ownership in 2015.
Reliant Energy, Inc. — Senior Vice President, Commercial Operations & Risk Management
Ran multi-billion-dollar commercial energy portfolios across natural gas, crude oil, electricity, coal, and emissions. Directed global commercial operations, trading, marketing, and risk management in volatile domestic and international markets. Built structure, discipline, and analytics in a rapidly evolving energy landscape and helped shape enterprise-level commercial strategy.
Ameren Corporation — Director, Power Marketing
Charged with modernizing a legacy utility generation fleet into a competitive commercial organization. Developed and executed new-market strategies during electric industry deregulation.
Aquila Inc. — Director, Energy Trading & Risk Management
Led trading and optimization strategies for multiple utility operating companies. Drove revenue enhancement and structural redesign in early wholesale power markets.
UtiliCorp United, Inc. — Structured Energy Support & Retail Competitive Markets
Developed structured pricing and retail energy products. Supported the national rollout of EnergyOne, an early competitive retail energy offering.
Kerr-McGee Corporation — Director, Transportation & Exchange / Accounting Development Program
Managed U.S. natural gas transportation strategies across the interstate pipeline grid. Progressed through the corporation’s formal Accounting Development Program and held roles in volumetric control, analysis, commercial support, and long-haul logistics strategy.
LICENSURE & COURT ADMISSIONS
Attorney at Law: Texas & Oklahoma
Certified Public Accountant: Texas & Oklahoma
Court Admissions:
Supreme Court of the United States
U.S. Tax Court
U.S. District Court, Southern District of Texas
U.S. District Court, Eastern District of Texas
All Texas and Oklahoma State Courts
EDUCATION
J.D. — South Texas College of Law–Houston
Graduate Study (Tax, Finance, Quantitative Methods) — University of Oklahoma
B.S. Accounting — Oklahoma State University
LEADERSHIP & AFFILIATIONS
President & Board Member — American Academy of Attorney–CPAs
Fellow — American Bar Foundation
Member — American Institute of Certified Public Accountants
Member — Texas Society of CPAs
Member — State Bar of Texas
Member — Oklahoma Bar Association
Lifetime Member — Oklahoma State University Alumni Association
Member — American Legion
MILITARY LEADERSHIP
United States Army Reserve & Army National Guard (OK & KS)
Enlisted Infantry — Graduate, U.S. Army Officer Candidate School — Commissioned Field Artillery Officer
Leadership forged under pressure: disciplined, decisive, mission-driven.
REFERENCES
Available upon request. Professional, legal, executive, and character references available across multiple sectors.