David Blum is the co-chair of the Tax Planning & Litigation Group, a member of the Corporate Group and chair of the Sports Law Group.  He concentrates his practice on a broad range of transactional, tax planning and tax litigation matters involving federal, state and local and international taxation.

Federal Transactional Planning and Structuring

David has extensive experience in creating and implementing tax-efficient structures for all types of domestic and cross border transactions, including business start-ups, private equity, venture capital, mergers and acquisitions, joint ventures, dispositions, restructurings, executive compensation and corporate finance matters.

State and Local Taxation (SALT)

David routinely advises clients on all aspects of multistate taxation including nexus issues, income apportionment, sales and use tax, franchise tax, False Claims Act (qui tam), unclaimed property, transfer taxes and state registration and reporting requirements.

Federal & State Tax Controversy

David leads the firm’s Tax Controversy practice.  He is a former State Tax Auditor and has significant experience in representing domestic and multinational companies before the Internal Revenue Service and State and Local taxing agencies.  David routinely defends large and complex audits at all stages of the audit and appeal process.  He represents taxpayers in U.S. Tax Court, IRS Appeals Division, state court, state and city Administrative Hearings, and state and local taxing agencies across the country.

His representation includes, audit defense, appealing and negotiating proposed assessments, tax litigation, negotiating and entering into voluntary disclosure agreements and obtaining federal and state private letter rulings.


David frequently writes and speaks on a variety of tax related topics. He has written articles for national publications including Bloomberg BNA, the Journal of Taxation of Corporate Transactions (CCH), the Journal of Real Estate Taxation (WGL), and Professional Sports and the Law.  In addition, David has been quoted in the Wall Street Journal, Forbes, CNBC, MSN, Reuters, Los Angeles Times, National Law Journal, Crains Chicago Business, Chicago Daily Law Bulletin, Accounting Today, the Chicago Tribune, Law360, Inside Counsel and the Washington Post.

David is a member of the Advisory Board of the John Marshall Law School's LL.M. (Taxation) Program. He is currently an adjunct professor in the Business and Enterprise Law Clinic, and prior to that, he taught "Partnership Taxation" in the LL.M. program. He is also a Certified Public Accountant.
David is ranked by Chambers USA in both the Taxation and Tax Controversy categories. He was named as one of the "40 Attorneys Under 40" by the Illinois Law Bulletin (2007).

David is also a member of the firm's Pro Bono Committee.

  • Bar Admissions: Illinois, 1997

    Court Admissions: U.S. District Court, Northern District of Illinois
    U.S. Tax Court

    Education: University of Arizona, 1990, BSBA Accounting, BSBA, Finance
    John Marshall Law School, 1997, J.D., cum laude; LL.M., with honors, Recipient, Order of John Marshall

  • Memberships: Certified Public Accountant
    Sports Law Association, Member
    American Bar Association (Section on Taxation)
    Chicago Bar Corporate Tax Subcommittee, Past Chair
    Chicago Bar Federal Taxation Full Committee, Past Chair
    Chicago Bar Partnership and Flow-through Entity Subcommittee, Past Chair
    Chicago Bar Federal Tax Executive Committee
    Chicago Bar State and Local Tax Committee

  • Honors & Awards: Ranked in Chambers USA - 2014, 2015
    Named by the Law Bulletin as one of the 2007 Illinois' "40 Attorneys Under 40 to Watch"
    Named by Super Lawyer as one of the 2008 Illinois' Rising Stars
    Illinois Super Lawyer - 2010, 2011
    Named as a Leading Lawyer by the Leading Lawyers Network