• 818-758-4076
  • info@mintcream-goose-197616.hostingersite.com
  • Katy/Houston, Texas

About The Firm

A Licensed CPA Firm Committed to Accuracy, Integrity & Exceptional Service

About Us

Haarmann & Obiako LLP is a licensed Certified Public Accounting firm based in the Katy/Houston area and serving clients nationwide. Founded by two experienced CPAs with more than 30 years of combined expertise, our firm provides high quality tax, bookkeeping, and advisory services to individuals, entrepreneurs, and small businesses across multiple industries.
We believe that financial clarity is the foundation of confident decision making. That’s why our work is grounded in technical rigor, and delivered with a commitment to accuracy, transparency, and timely communication. Whether you need CPA prepared tax returns, US GAAP compliant bookkeeping, or strategic financial guidance, we ensure your financial information is reliable, organized, and actionable.

Our Approach

At Haarmann & Obiako LLP, we combine the precision of public accounting with the practicality of real world business experience. We focus on:
  • Accuracy: Clean reconciled financials
  • Compliance: Up-to-date knowledge of tax laws and accounting standards
  • Efficiency: Streamlined processes that save clients time and reduce stress
  • Clarity: Reports and insights that reveal the true financial health of your business
  • Partnership: Long term relationships built on trust and consistent results
Our goal is simple: to help you stay compliant, organized, and financially confident at every stage of your personal or business journey.

Meet the Partners

Experienced. Credentialed. Committed to Your Financial Success.

Brandon Haarmann, CPA

Co-Founder & Partner

Isioma Obiako, CPA

Co-Founder & Partner

Our Commitment to You

As a licensed CPA firm, we uphold the highest standards of ethics, professionalism, and confidentiality. We treat your financial matters with the utmost care and diligence, ensuring you receive dependable service and clear, trustworthy results.
At Haarmann & Obiako LLP, you are not just hiring accountants — you are gaining dedicated partners invested in your long-term financial success.
Gain accurate books, strategic tax planning, and financial insights you can trust.

Partner With CPAs Who Understand Your Business

Contact us to get started

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Brandon Haarmann, CPA

Co-Founder & Partner
Brandon Haarmann is a Certified Public Accountant with a Master of Science in Accounting from Sam Houston State University and more than 16 years of experience in accounting, auditing, and financial consulting. Before co founding Haarmann & Obiako LLP, he spent 15 years at a Big Four accounting firm auditing public and private companies in the oil and gas, manufacturing, and life sciences sectors.
Brandon brings deep expertise in US GAAP compliance, internal controls, SEC reporting, and business continuity planning. He is dedicated to helping clients navigate complex accounting standards, prepare for regulatory requirements, and strengthen the financial foundation of their businesses.

Isioma Obiako, CPA

Co-Founder & Partner
Isioma Obiako is a Certified Public Accountant with a Master of Science in Accounting and more than 16 years of experience across public accounting and private industry sectors. She started her career at a Big 4 accounting firm then went on to hold key roles within a private‑industry organization, giving her a well‑rounded perspective on complex financial and operational needs.
Isioma’s approach is grounded in technical rigor and supported by professional grade accounting systems. She is known for her meticulous attention to detail, efficient processes, and ability to deliver timely, reliable financial information that empowers confident decision making. Her work ensures clients maintain accurate books, dependable tax strategies, and a clear understanding of their financial health.