about us

Enrolled Agent
William McGugan

Mr. McGugan graduated magna cum laude from Longwood University where he was a member of the Phi Kappa Phi and Phi Alpha Theta honor societies. He has previously worked at a variety of tax law firms where he gained experience in trusts and estates, tax controversy, and international tax matters. Mr. McGugan joined Pontius Tax Law, PLLC in 2020.

During his trust and estates work, he regularly prepared probate documents throughout the DC metropolitan area. He prepared estate and gift tax returns as well as fiduciary income tax returns. Through that time, he assisted clients through difficult life transitions and strived to provide the highest level of compassion for clients during a difficult time.

Mr. McGugan’s tax controversy practice focuses on assisting clients with IRS and State tax audits and resolving their tax debts. He focuses on translating the complex tax laws in an easy-to-understand way to ensure continued compliance for his clients.

Mr. McGugan’s international practice involves helping clients navigate the procedures to get back into compliance with their US filing obligations by filing or amending their tax returns to report their worldwide income through the Streamlined Offshore Procedures or filing delinquent Report of Foreign Bank and Financial Accounts (“FBARs”).

Mr. McGugan earned the Enrolled Agent designation from the Department of Treasury in 2017. With the Enrolled Agent credential, Mr. McGugan represents taxpayers before the IRS and state taxing authorities. He zealously advocates for his clients to ensure the best results are achieved.

He is an active member of the Maryland Society of Tax Professionals (MSATP). MSATP advocates for fair and just laws and regulations both in the community and in front of the Maryland State Legislature to ensure that its members voices and our clients are heard. Additionally, MSATP produces a quarterly publication, The Free State Accountant in which Mr. McGugan is often a contributor.

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.
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...
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
View All