Photo of Jennifer  Karpchuk

Jennifer Karpchuk

S.A.L.T. Practice Co-Chair


Temple University School of Law, J.D., 2009

University of Delaware, B.A., cum laude, 2006


Named as a US News Best Lawyers in America, 2021

Named as a "Super Lawyers Rising Star" for 2016-2019

Named as a "Top Lawyer in Tax" by Main Line Today for 2018-2019

Bar Admissions


New Jersey


Jennifer Weidler Karpchuk represents companies and individuals in various matters related to state and local taxation, with an emphasis on the minimization of state and local tax obligations. She has extensive experience handling state and local tax matters, including those related to: corporate income taxes, franchise taxes, gross receipts taxes, excise taxes, personal income taxes, sales and use taxes, business privilege taxes, and real estate taxes.

Jennifer advises clients in all aspects of state and local tax compliance and litigation, including:

  • Challenging taxing authorities' determinations of nexus creating activities;
  • Challenging taxing authorities' imposition of sales tax to evolving digital goods and services;
  • Challenging audit determinations and assessments; Seeking refunds from state and local governments;
  • Handling administrative appeals at both the state and local levels; Litigating unresolved disputes in state and local courts;
  • Handling post-trial appeals at all appellate levels; and Reducing interest and penalties associated with past due taxes through the use of state and local amnesty, voluntary disclosure programs and administrative appeals.

In addition, she handles transactional planning for clients and has experience:

  • Determining nexus and potential nexus for sales and use tax, income tax, and gross receipts tax purposes;
  • Advising clients on the tax implications of pending and past transactions;
  • Planning for and mitigating tax burdens;
  • Maximizing available tax opportunities or credits; and
  • Reviewing nexus and developing strategies to minimize exposure.

Jennifer serves in a number of leadership roles. She is the current chair of the Philadelphia Bar Association’s State and Local Tax Committee, as well as an appointed member of the Philadelphia Bar Association’s Tax Council. She also serves as the current secretary of the Pennsylvania Bar Association’s Tax Section. Jennifer is part of the American Bar Association’s State and Local Tax Committee’s executive committee, serving as co-chair of the Sales and Use Tax subcommittee and Miscellaneous Taxes subcommittee.

Jennifer writes a quarterly article for State Tax Notes and is a frequent contributor to The Legal Intelligencer. She was also co-author of The Legal Intelligencer’s Pennsylvania Tax Handbook and the Pennsylvania Chapter of the American Bar Association’s Property Tax Deskbook.





Seminars & Presentations



  • "Hashing out rates Taxing marijuana without extinguishing it", Accounting Today, November 6, 2018
  • "Farewell Physical Presence: Was the U.S. Supreme Court’s Decision Way Off, or Way…Fair?" ABA Tax Times, Aug. 3, 2018

  • "Life After Physical Presence: Implications for Pennsylvania Post-Wayfair" State Tax Notes, Aug. 6, 2018                                                                  

  • "Does Pennsylvania’s Bonus Depreciation Disallowance Violate Uniformity?” State Tax Notes, Mar. 19, 2018
  • “Fireside Chat with Pennsylvania Revenue Secretary C. Daniel Hassel,” State Tax Notes, Jan. 22, 2018
  • “Hashing Out SALT Issues Related to Pennsylvania’s Legalization of Medical Marijuana,” State Tax Notes, Nov. 13, 2017
  • “Pennsylvania Proposes Remote Seller Bill, but Is It Effective?” State Tax Notes, June 12, 2017

Blog Posts