att name

"Tremendously talented and

passionate, she is universally

recognized in the industry

as one of the go-to experts

in the field."

Legal 500

Margo H. K. Tank


  • p. 202.349.8050
  • f. 202.349.8080


Margo Tank is a partner of BuckleySandler LLP. Ms. Tank advises financial services institutions and technology companies on structuring online and mobile financial services product offerings in compliance with the Electronic Signatures in Global and National Commerce Act (ESIGN) and the Uniform Electronic Transactions Act (UETA), and other state and federal laws governing electronic financial services transactions, electronic chattel paper, mobile payments and mobile wallets, prepaid access and virtual payment methods, and laws related to privacy and data security, money transmission, and unfair or deceptive acts and practices. Ms. Tank led the representation of a national lending company in a Federal Trade Commission enforcement action relating to alleged data security violations.

Ms. Tank's other activities include acting as the Co-Reporter for the Drafting Committee preparing the Standards and Procedures for Electronic Records and Signatures (SPeRS) (, and advocacy before Congress and federal regulators with respect to electronic financial services issues as counsel to the Electronic Financial Services Council and the Electronic Signatures and Records Association.  She was named a “2009 Mortgage Banking Technology All-Star” by Mortgage Banking Magazine.  Ms. Tank is also a member of the American Bar Association's Business Law Section and the Committee on the Law of Commerce in Cyberspace, a member of the Electronic Transactions Association’s Mobile Payments Committee, and is on the xDTM Standard Board of Governors. In 2016, she was appointed as an Observer to the Uniform Law Commission's Study Committee to Amend the Revised Uniform Law on Notarial Acts.

Ms. Tank is co-author of The Law of Electronic Signatures and Records (West, a Thomson Reuters business, 2012-2013 Edition) and a number of articles: “What Emerging Payment Providers Can Learn From Liberty Reserve and Mt. Gox,” Payments Journal, August 1, 2013; “A Brief Guide to Using Electronic Signatures in Securities Transactions,” Practical Compliance & Risk Management for the Securities Industry, July 1, 2013; “Planning for Accessibility when Developing Financial Services Websites and Mobile Apps,” American Bar Association Consumer Financial Services Newsletter, June 20, 2013; “NACHA's Guidelines for Bill Payments Via QR Codes,” E-Finance & Payments Law & Policy, April 16, 2013; “Federal Regulators Issue Guidance on Social Media and Mobile Privacy,” Internet Law & Strategy, April 4, 2013; “Is Regulatory Uncertainty an Impediment to Mobile Payments?Payments Journal, January 23, 2013; “E-Signatures: Zulkiewski v. American General Life Insurance Company,” E-Commerce Law Reports, December 4, 2012; “Two Agencies and Various Industry Standards Offer Guideposts on Mobile Disclosure Requirements,” National Law Journal, April 11, 2012; “Standards and Procedures for Electronic Records and Signatures (SPeRS), Version 2.0,” Electronic Financial Services Council, November 29, 2011; “eMortgage Implementation Considerations,” Electronic Banking Law and Commerce Report, July 1, 2006; “It’s the Message, Not the Medium,” The Business Lawyer, August 1, 2005.

Prior to joining BuckleySandler, Ms. Tank was a partner with Goodwin Procter LLP. Before entering private practice, she was counsel to the U.S. House of Representatives, Committee on Banking and Financial Services. Ms. Tank received her J.D. from Drake University Law School in 1992 (with honors) and while there was Projects Editor for the Drake University Law Review. She received a B.A. from the University of Vermont in 1985 and also studied commercial law at Queens College, Oxford University in England in 1991.

Significant Representations

  • United States v. PLS Financial Services, Inc.

    Two companies that allegedly failed to safeguard discarded, sensitive personal information will pay $101,500 to settle related Federal Trade Commission charges filed in the U.S. District Court for the... MORE


Knowledge & Insights

In The News

Speaking Engagements & Events

Awards & Recognition

  • 2015 Cornerstone Award, Electronic Signatures & Records Association
  • Legal 500 2012-2016: Recognized in the Media, Technology and Telecoms - Technology: Data Protection and Privacy practice area