Daniel T. Kiely

Tax, Tax Transactions & Planning, Environmental, Social & Governance (ESG)


Dan Kiely is a partner in Mayer Brown’s New York office and a member of the Tax Transactions & Consulting practice. Dan’s practice covers a wide range of federal income tax matters with a particular focus on international and domestic asset and finance transactions, including leasing, project financing, infrastructure, syndications, asset-backed securitizations and M&A. 

Prior to joining Mayer Brown, Dan was the Senior Vice President and Chief Tax Officer of OneMain Financial (OMF) where he was responsible for all aspects of tax planning, policy and compliance. Prior to OMF, he held several leadership roles in the tax department of GE Capital and practiced in New York and London in a leading global law firm.


  • College of the Holy Cross, BA
  • Cornell Law School, JD, cum laude

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  • New York