YOON&YANG

Wankyu Jeon Partner

TEL 82 2 6003 7121
FAX 82 2 6003 7032
E-MAIL wkjeon@hwawoo.com

Wankyu Jeon is a Partner at Yoon & Yang LLC, specializing in Tax Consulting and Tax Disputes. He is a tax specialist focused on strategic tax planning from the initial stages, covering Corporate Tax consulting (including correction claims and tax law revision advice), Tax consulting for Transaction Structures, and International Tax and Transfer Pricing advice for multinational corporations.
Mr. Jeon holds a Law degree from Korea University, completed the 31st Class of the Judicial Research and Training Institute, majored in Accounting at Korea University Graduate School of Business, and earned his LL.M. from Southern Methodist University School of Law. He actively serves as a Director of the Korean International Tax Association. He has been recognized as the Best Tax Lawyer by JoongAng Ilbo/Korean In-house Counsel Association (2025), a Highly Recommended As A Ranked Tax Lawyer by Chambers & Partners (2022-2025), and a Leading Lawyer (Tax) by Legal Times (2021-2023).

Practice Areas

Experience

2005-present Yoon & Yang LLC
2023-present Non-executive Director, i-SMR Technology Development Project Group
2019-present Director, International Fiscal Association Korea
2017-present Case Commentator, Law Times; Member, Korea Tax Law Association
2020-22 Member, the Standing Committee on International Exchange, International Fiscal Association Korea
2020 Member, the Task Force for Research on the Issues Regarding the Imposition of Value-Added Tax (VAT) on Attorney Fees, Seoul Bar Association
2019-23 Advisory Committee Member, Korea Local Tax Institute
2018-22 Member, Tax System Committee, Korean Bar Association
2017 Interviewer, Korea University School of Law
2007 Tax Research Institute, Seoul Bar Association
2002-05 Public Service Advocate

Education

2016 University of Seoul, Graduate School of Tax (Tax Strategy course completion)
2011 Southern Methodist University School of Law, LL.M.
2005 Korea University Graduate School of Business, MBA
2002 Judicial Training & Research Institute
1996 Korea University, LL.B.

Qualifications

Admitted to bar, Korea (2002)
Tax accountant, Korea (2008)

Representative Matters

Advised on correction of taxes payable overseas for Hyundai E&C, Daewoo E&C, Samsung E&A, DL E&C, and POSCO International
Represented Rolex Korea in the litigation seeking revocation of the corporate tax disposition imposed on transfer price (prevailed). Also handled tax audits on transfer pricing and customs corporate audits
Represented Korea Zinc and established the Transfer Pricing Policy for both domestic and overseas related party transactions and prepared BEPS documents
Represented LMS and established the Transfer Pricing Policy for both domestic and overseas related party transactions
Represented COSMAX NBT and established the Transfer Pricing Policy and prepared BEPS documents
Represented COSMAX and COSMAX BTI and established the Transfer Pricing Policy for both domestic and overseas related party transactions and prepared BEPS documents
Represented Hyundai Development Company (HDC) and prevailed in the litigation seeking invalidation of disposition imposing value-added tax on installment payments
Represented KT and prevailed in the litigation seeking affirmation of invalidation of disposition collecting corporate tax (withholding)
Represented Haitai Confectionery & Foods and prevailed in the litigation seeking affirmation of invalidation of disposition collecting corporate tax
Represented Incheon Port Authority and prevailed in the litigation pertaining to unjust enrichment (related to affirmation of invalidation of disposition imposing property tax)
Advised Shinhan Bank regarding the criteria for exchange of financial information between Korea’s National Tax Service and a foreign tax authority
Advised on drafting a special law on designation and operation of oil hub special zone (tentative) for the Ministry of Trade, Industry and Energy and Ulsan Development Institute
Advised the Korea Liquor Industry Association on measures to reshape the liquor taxation scheme
Represented the Korea Financial Investment Association and 21 asset management companies (i.e., ISIS Asset Management) in the litigation seeking revocation of disposition imposing acquisition tax (prevailed)
Represented the Association for Urban Environment Improvement Near the Kukje building District 3 Zone

Awards

Leading Individual, Tax, Chamber and Partners Asia-Pacific (2022-2025)
Best Lawyer, Tax, JoongAng Ilbo and the Korean In-house Counsel Association (2025)

Publications

South Korea Chapter, Tax Controversy, Chambers Global Practice Guides, Chambers and Partners (Co-author, 2024-2025)
South Korea Chapter, Transfer Pricing, Chambers Global Practice Guides, Chambers and Partners (Co-author, 2025)
Review of the Transactional Net Margin Method as the Method for Calculating Arm’s Length Price, Tax Practice Study II (2017)
Commentaries of Supreme Court Decisions and Determination Criteria on the Proportional Calculation of Value-Added Tax, The Law Times (2017)
New Approach to Requirements for Imposition of Pentalty Tax on Underreporting, Tax Practice Study I (2015)
Framework Act on National Taxes (section on Penalty Tax), LAWnB Online Commentary (Co-author, 2014)
Tax on corporate lending and bond issues in South Korea: overview (co-author) - Practical Law Company (PLC) multi-jurisdictional Guide (2013)