Bill Callison helps clients conduct business within LLC, partnership, corporate and tax laws, and implement affordable housing and community development finance projects.

Corporate Law

Bill’s work includes:
  • Forming and financing business entities
  • Counseling on operational matters
  • Preparing contracts and related documents
  • Advising on corporate and partnership mergers and acquisitions
  • Advising on dissolution and dissociation

Bill is one of the nation’s foremost authorities on LLC and partnership law, and he is a subject matter authority on laws concerning fiduciary duties and obligations. He frequently serves as a consulting and testifying expert witness in matters involving corporate, limited liability company, partnership, limited partnership, contract, professional malpractice and other disputes.

Affordable Housing & Community Development

Bill advises on low-income housing tax credit syndications and creative debt financing. He has assisted clients with hundreds of low-income housing tax credit deals since 1987, and has completed transactions in states from Alaska to Florida. He also has extensive experience implementing historic rehabilitation tax credits, New Markets Tax Credits and federal energy credits.

Business Entities

Bill participated in drafting Colorado and uniform limited liability company, partnership and limited partnership statutes.

Faculty Positions

  • Tilburg University School of Law (Netherlands) — Visiting Professor of Law
  • University of Colorado School of Law — Thomson Visiting Professor of Law
  • University of Ottawa School of Law — Feeney Professor of Business Law
  • University of Kentucky College of Law — Visiting Professor of Law
  • Washington & Lee University Law School — Practitioner-in-Residence


Bar Admissions


Court Admissions

U.S. Supreme Court
U.S. Tax Court


Yale Law School
LL.M. (2000)

University of Colorado Law School
J.D. Order of the Coif (1982)

Oberlin College
B.A. (1977)

Insights & Events

Other Perspectives

Visit Bill's page on the Social Science Research Network to view and download some of his published articles.

  • Corporate Disruption: The Law and Design of Organizations in the Twenty-First Century
    European Business Organization Law Review, co-author, Oct. 2018 
  • Tax Credit Transactions Corner 
    Column Author, Journal of Passthrough Entities, 2014-present
  • Achaian and Interest Transfers Among Existing Partners and Members
    Research Handbook on Partnerships, LLCs and Alternative Forms of Business Organizations, Hillman & M. Loewenstein, 2015
  • Benefit Corporations, Innovation and Statutory Design
    26 Regent University Law Review,143, 2013


  • Limited Liability Companies: A State-by-State Guide to Law and Practice
    Thomson West, annual supplementation, 1994-present
  • Partnership Law and Practice: General and Limited Partnerships
    Thomson West, annual supplementation, 1992-present

Leadership & Community

Professional Associations

  • United Nations Commission on International Trade Law Working Group I (Micro, Small and Medium Enterprises) — American Bar Association Delegate; UNCITRAL Secretariat's expert group
  • American Arbitration Association — Commercial Arbitration Panel
  • American Bar Association — Affordable Housing and Community Development Forum, (Chair, 2015-16; Chair-Elect, 2014-15; Vice Chair, 2013-14); Business Law Section (Chair, Partnership subcommittee, LLC and Unincorporated Organizations Committee)
  • Colorado Bar Association
  • American Law Institute


  • Faegre Drinker — Pro Bono Honor Roll, 2020-21
  • American College of Real Estate Lawyers — Fellow
  • Best Lawyers® Corporate Law, 2006-22; Nonprofit/Charities Law, 2008-22; Tax Law, 2008-22
  • Faegre Baker Daniels — Pro Bono Honor Roll, 2018-19
  • Super Lawyers — Business/Corporate, 2012-20
  • Colorado Lawyers Committee — Outstanding Sustained Contribution Award, 2014
  • Housing Colorado — Peoples' Choice Award, 2012
  • Burton Award for Legal Writing — 2008 and 2011

Awards Methodology

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