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About Us

Diana Pelham

Diana Pelham advises individuals and businesses on tax controversy matters, specializing in navigating the complexities of all aspects of federal and state tax disputes, including audits, appeals, and collections. Diana is a committed tax attorney known for her meticulousness and innovative approach. She dedicates herself to fully understanding her clients’ distinct financial circumstances and goals to create the most effective solutions, putting them in the strongest position possible based on their specific circumstances. Diana takes pride in offering honest advice and customized strategies that align with her clients’ objectives.

Diana is passionate about helping clients regain their financial health through practical and cost-effective tax advice, striving to resolve tax issues without the need for expensive litigation. She provides thorough guidance on resolving federal and state tax liabilities, ensuring her clients achieve peace of mind. Diana’s commitment to her clients and her field of expertise makes her an invaluable partner in navigating the often-daunting world of tax law.

Prior to joining Pontius Tax Law, PLLC, Diana was an International Tax Consultant at Deloitte Tax LLP, where she served Fortune 500 companies and investment firms, providing expert advice on international tax planning and compliance solutions.

Education

Boston University School of Law (LL.M in Tax, 2022)

University of Edinburgh School of Law (LL.M in International Banking Law and Finance, Merit (Magna Cum Laude), 2017)

New England School of Law (J.D., 2017)

San Jose State University (B.A., Cum Laude, 2013)

Languages

Spanish (Native)

Bar Memberships

Washington, D.C.

New York

Wyoming

N/a Diana Pelham about_image
Pontius Tax Law, PLLC

Diana Pelham advises individuals and businesses on tax controversy matters, specializing in navigating the complexities of all aspects of federal and state tax disputes, including audits, appeals, and collections. Diana is a committed tax attorney known for her meticulousness and innovative approach. She dedicates herself to fully understanding her clients’ distinct financial circumstances and goals to create the most effective solutions, putting them in the strongest position possible based on their specific circumstances. Diana takes pride in offering honest advice and customized strategies that align with her clients’ objectives.

Pontius Tax Law, PLLC


1300 I St NW
Suite 400E

Washington DC 20005

TESTIMONIALS
Client Reviews
John helped us with a DC tax audit and succeeded in getting us a "no change" final decision. The issues were related to two flow-through entities and the use of carry-forward operating losses -- something that the DC auditors struggled to understand and with which they did not have any...
Paul A
Mr. Pontius is extremely professional and was able to take care of my tax returns which includes international bank accounts quickly and at a very reasonable price. Would definitely recommend.
Karl
I received a fee this past November from the IRS for over $800 because of an error I made on my 2016 taxes. I called my cousin, John Pontius, and he immediately knew what steps needed to be taken. Thanks to him, the fee was cleared. A 10 minute conversation...
A.K.
As an American citizen living in the Middle East my local banker informed me that I needed to file FBARs and report my worldwide income to the IRS. Through the recommendation of another attorney at an international law firm, I was introduced to John Pontius. Mr. Pontius efficiently and effectively...
Kareem S
John handled a difficult IRS lien for my client. He was excellent in getting the lien released so we could close on the property. I would highly recommend John .
Bobbie M
We were seeking tax advice with managing two properties, LLC, as well as some future financial planning. John responded to my call in a timely manner and was happy to answer our questions while referring us to specialists who can manage our accounts on a more regular basis.
Janelle M
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