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Kathryn Duffy



I focus my practice on federal and state taxation by building legal strategies that help clients understand how tax law impacts a wide range of transactions, while ensuring compliance and minimizing tax burdens.

I have a broad background in a number of tax issues but am particularly well versed in:

• Matters involving individual estate plans and goals
• Disputes with the Internal Revenue Service as well as state taxation authorities
• State and federal income, estate, gift, and generation-skipping tax returns
• Filing requirements for businesses and individuals with multi-state sourced income
• Reporting requirements upon expatriation

Prior to joining Nexsen Pruet, I worked with a Virginia-based firm, where I handled complex estate and asset protection plans for high-net worth clients. I oversaw and supervised the administration of trusts and prepared customized operating agreements, business succession plans, purchase agreements, leases and promissory notes for corporations, subchapter s-corporations, limited liability companies and partnerships.



George Washington University, J.D., 2010

University of Virginia, B.A., 2007

Bar Admissions
  • North Carolina
  • South Carolina
  • Virginia
  • Supreme Court of the United States
Civic & Professional Memberships

• Member, Virginia Bar Association
• Former Co-Chair, Wills, Trusts, and Estates Section, Fairfax Bar Association
• American Bar Association
• Virginia Women Attorneys Association
• Former Vice President, Board of Directors, Renaissance 2230 Condominium


• “Undergraduate Law Review,” Pre-Law Student Association, George Washington University, Professional Guest Editor (Spring 2013, Spring 2014)
• “Values-Based Estate Planning,” Alumni Weekend, George Washington University, Guest Presenter (September 2013)
• “Tax Planning for Trusts and Estates,” Federal Estate Tax Update; The Federal Estate Tax Return, National Business Institute (January 2013)
• “Your Step-by-Step Guide through Troubled Probate,” Determining Rightful Heirs and Beneficiaries; Financial and Tax Hurdles, National Business Institute (October 2011)

Like most parents with young children, I spend most of my time out of the office with my son, Connor. And, like most little boys, he is into super heroes, sports and anything outdoors - so we stay busy getting into everything. We also enjoy playing outside with our two dogs, Nala and Hailey, and taking them for walks or over to the park.

I’m also a huge sports fan and love anything Virginia Cavaliers related (wahoowa!), and I’m a die-hard Philadelphia Eagles fan (despite growing up in the Washington DC area).

Katie Duffy main bio photoKatie Duffy prop photo