Tax
Overview
Experts
Publications

The Brattle Group has been retained by taxpayers and tax authorities worldwide to provide expert testimony and consulting services for the last 25 years.

Our Principals and a broad network of academic and industry experts have testified and/or submitted expert reports in over one hundred tax matters, both in the U.S. and abroad. Our economic analyses and opinions are often cited extensively and favorably in landmark legal decisions.

Dozens of Fortune 500 companies and governments have retained us as consulting and testifying experts in tax disputes. Our clients include the tax controversy groups at leading law firms, taxing authorities, and corporations worldwide.

Brattle has assisted clients at all stages of tax disputes including audit, appeals, settlements, and trial. We supply financial and economic analyses applicable to key judicial doctrines, such as the economic substance, step transaction, and business purpose doctrines, and the arm’s-length principle. In addition, we assist our clients with tax planning, including advance pricing agreements analysis and documentation. We have also advised clients on tax policy issues that have been presented to the White House, the Joint Committee on Taxation, and various governmental agencies.

Our approach is to integrate with client teams and work closely throughout case development. We provide financial, economic, accounting, and industry expertise tailored to the needs of the case. We have extensive experience in hosting, managing, and working with large document sets and big data. Ultimately, we recognize that what matters most are clear communication, credibility, creativity, and responsiveness.

Areas of Expertise

Principals
Chodorow 075
Principal
Darrell Chodorow has more than 15 years of consulting experience in commercial damages, valuation, and tax matters. More icon f02782c24cccaf6d90e1da53920c42f20e5a8955f54ac2ca5727ec7dc89987b4
Cohen photo search
Principal
+1.617.864.7900
Mr. Cohen specializes in financial modeling and valuation, with a focus on complex business litigation. More icon f02782c24cccaf6d90e1da53920c42f20e5a8955f54ac2ca5727ec7dc89987b4
Cragg13
Principal & Chairman
(Cambridge) +1.617.234.5721
(Toronto) +1.416.360.4849
Dr. Cragg has extensive consulting, research, and expert witness experience in corporate finance, financial services, and valuation. More icon f02782c24cccaf6d90e1da53920c42f20e5a8955f54ac2ca5727ec7dc89987b4
0107 1
Principal
Dr. Ledgerwood is an expert in market competitiveness with an emphasis on the economic analysis of potential market manipulation claims in commodities and securities markets. More icon f02782c24cccaf6d90e1da53920c42f20e5a8955f54ac2ca5727ec7dc89987b4
Adorialim40 new2
Principal
+1.415.217.1064
+1.415.350.3870
Ms. Adoria Lim is a Certified Public Accountant (CPA) with over 15 years of experience in accounting and finance at a Big 4 accounting firm, a Fortune 500 publicly-traded company, and top-tier and boutique consulting firms. More icon f02782c24cccaf6d90e1da53920c42f20e5a8955f54ac2ca5727ec7dc89987b4
Myers 036
Principal
+1.617.864.7900
Professor Myers is one of the world’s leading authorities on the theory and practice of finance. More icon f02782c24cccaf6d90e1da53920c42f20e5a8955f54ac2ca5727ec7dc89987b4
Oldfield 098 1
Principal
+1.202.955.5050
Dr. Oldfield is an expert in financial economics, including mortgage securitization, trading strategies, market making, corporate bond valuation, financial derivatives, and risk management. More icon f02782c24cccaf6d90e1da53920c42f20e5a8955f54ac2ca5727ec7dc89987b4
Sacks 124
Principal
+1.202.955.5050
Mr. Sacks has more than fifteen years of consulting experience in valuation, international arbitration, securities, commercial damages, tax, and product liability matters. More icon f02782c24cccaf6d90e1da53920c42f20e5a8955f54ac2ca5727ec7dc89987b4
Sarro 061
Principal
+1.617.864.7900
Dr. Sarro is principal and director of The Brattle Group, and a leader of its practice in cases involving “big data” and document analytics. He is a financial and empirical economist who is the lead consulting expert to investigative and trial teams in complex investigations and high-stakes litigation. More icon f02782c24cccaf6d90e1da53920c42f20e5a8955f54ac2ca5727ec7dc89987b4
Vilbert 119
Principal
+1.415.217.1000
Dr. Vilbert specializes in cost of capital, regulatory economics, financial planning, income tax disputes, and valuation. More icon f02782c24cccaf6d90e1da53920c42f20e5a8955f54ac2ca5727ec7dc89987b4
Zhou 082
Principal
+1.617.864.7900
Dr. Zhou is a valuation, corporate finance, and accounting expert with more than 15 years of consulting experience. More icon f02782c24cccaf6d90e1da53920c42f20e5a8955f54ac2ca5727ec7dc89987b4
Principal Emeritus
Kolbe 092
Principal Emeritus
+1.617.864.7900
Dr. Kolbe's work focuses on applied financial economics and his projects address risk, return, and regulatory policy for rate-regulated industries; tax disputes; and firm, security, or project valuation questions in a wide variety of settings. More icon f02782c24cccaf6d90e1da53920c42f20e5a8955f54ac2ca5727ec7dc89987b4
Academic Advisors
Academic Advisor
Shannon Anderson is Professor of Management at University of California, Davis Graduate School of Management, where she teaches courses in management accounting and internal management controls. More icon f02782c24cccaf6d90e1da53920c42f20e5a8955f54ac2ca5727ec7dc89987b4
Academic Advisor
Dr. Graham is a Professor of Finance at the Fuqua School of Business at Duke University. More icon f02782c24cccaf6d90e1da53920c42f20e5a8955f54ac2ca5727ec7dc89987b4
Academic Advisor
Dr. Green is the Director of the University of Southern California Lusk Center for Real Estate. More icon f02782c24cccaf6d90e1da53920c42f20e5a8955f54ac2ca5727ec7dc89987b4
Academic Advisor
Dr. Maydew is Chair of the Accounting Area, Director of Research at the UNC Tax Center, and the David E. Hoffman Term Professor of Accounting at the University of North Carolina. More icon f02782c24cccaf6d90e1da53920c42f20e5a8955f54ac2ca5727ec7dc89987b4
Academic Advisor
Dr. Metcalf is a Professor of Economics at Tufts University and a Research Associate at both the National Bureau of Economic Research and MIT's Joint Program on the Science and Policy of Global Change. More icon f02782c24cccaf6d90e1da53920c42f20e5a8955f54ac2ca5727ec7dc89987b4
Senior Associates
Defonseka 041
Senior Associate
+1.617.864.7900
Jehan deFonseka specializes in leading teams in complex business litigation. More icon f02782c24cccaf6d90e1da53920c42f20e5a8955f54ac2ca5727ec7dc89987b4
0265 1
Senior Associate
Dr. Dorobantu specializes in business and project valuation and structured finance issues, applied in the context of international arbitration and litigation involving financial institutions and tax matters. More icon f02782c24cccaf6d90e1da53920c42f20e5a8955f54ac2ca5727ec7dc89987b4
Hutchings 063 pp
Senior Associate
+1.416.360.4849
Mr. David Hutchings specializes in the economic analysis of complex business transactions. More icon f02782c24cccaf6d90e1da53920c42f20e5a8955f54ac2ca5727ec7dc89987b4
Kumar 066
Senior Associate
+1.415.217.1000
Dr. Kumar is an economist with expertise in corporate finance issues including business valuation, tax, and transfer pricing. More icon f02782c24cccaf6d90e1da53920c42f20e5a8955f54ac2ca5727ec7dc89987b4
Polek 083
Senior Associate
+1.617.864.7900
Dr. Christine Polek has over ten years of professional experience in the expert witness consulting industry. More icon f02782c24cccaf6d90e1da53920c42f20e5a8955f54ac2ca5727ec7dc89987b4
Report
December 16, 2016

The whitepaper finds that the U.S. House of Representatives’ Tax Reform Task Force Blueprint (the Blueprint) would lead to an increase in the domestic price of crude oil.

Article
A Theory of Risk Capital
December 2015
Published in the December 2015 issue of Journal of Financial Economics
Article
An Economic Framework for Identifying the Tested Party
November 30, 2015
Published in Tax Notes
Article
Corporate Inversion Transactions: Valuation Considerations
August 3, 2015
Evan Cohen, Michael I. Cragg, Jehan deFonseka, and Ryan Tholanikunnel
Published in Tax Notes
Article
Inequities in Tax Policy
May 4, 2015
Published in the Huffington Post
Presentation
Super-Normal Profits, Intangibles, and Tax Policy: The Role of Economics
August 1, 2013
Presented at the National Association for Business Economics (NABE) Transfer Pricing Symposium, Arlington, VA
Report
Real Options, Taxes and Financial Leverage
June 2012
Published by National Bureau of Economic Research, Working Paper No. 18148
Article
The Impact Of HR 3424 On The US Insurance Market
July 22, 2010
Published in Insurance Law360
Report
The Impact on the U.S. Insurance Market of H.R. 3424 on Offshore Affiliate Reinsurance: An Updated Economic Analysis
July 8, 2010
Michael I. Cragg, J. David Cummins, and Bin Zhou
Published by The Brattle Group, Inc.
Report
The Impact on the U.S. Insurance Market of a Tax on Offshore Affiliate Reinsurance: An Economic Analysis
May 2009
Michael I. Cragg, J. David Cummins, and Bin Zhou
Prepared for The Coalition for Competitive Insurance Rates, with support from the Association of Bermuda Insurers and Reinsurers (ABIR) and Leading European Reinsurers and Insurers