Derek W. Kaczmarek

Derek W. Kaczmarek stands as a cornerstone in the realm of tax law, serving as a partner and co-founder of Kaczmarek & Jojola, a distinguished tax litigation firm. With a practice rooted in tax litigation, tax audits, and tax collection, Mr. Kaczmarek is renowned for his adept representation of individuals, businesses, trusts, and estates facing scrutiny from the I.R.S. and state/local taxing authorities.

Having earned esteemed recognition within his field, Mr. Kaczmarek was elected Chair of the Tax Section of the State Bar of Arizona in 2018, reflecting the trust and respect he commands among his peers. His legal skills are further underscored by his certification as a tax law specialist by the State Bar of Arizona's Board of Legal Specialization, a distinction that speaks volumes about his depth of knowledge and commitment to excellence.

Mr. Kaczmarek's journey into tax controversy began as a trial attorney with the I.R.S. in Las Vegas, Nevada, in 2005, culminating in his role as a senior trial attorney with the I.R.S. in Phoenix, Arizona, in 2012. During his tenure, he amassed a wealth of experience, representing the I.R.S. in numerous high-stakes cases before the United States Tax Court. His track record boasts more than forty U.S. Tax Court trials, wherein he served as lead counsel, and his advisory role extended to guiding I.R.S. revenue agents and officers on matters ranging from criminal cases to international tax issues.

Mr. Kaczmarek's approach to advocacy is marked by discretion and aggression, a testament to his ability to leverage his background as a former government attorney alongside his nuanced understanding of I.R.S. and U.S. Tax Court practices and procedures.

In addition to his professional achievements, Mr. Kaczmarek has garnered acclaim through a series of prestigious accolades, including recognition as a Super Lawyer in Tax Law and inclusion in the Best Lawyers in America. His commitment to excellence is further underscored by his Martindale-Hubbell AV Peer Rating and his receipt of awards from the I.R.S. Office of Chief Counsel for litigation of national significance.

Mr. Kaczmarek's leadership extends beyond the courtroom, as evidenced by his active involvement in various bar associations and professional organizations. He has held esteemed positions within the State Bar of Arizona's Tax Section and the Western States Bar Association, demonstrating his dedication to advancing the field of tax law and serving the legal community with distinction.