Sullivan & Cromwell's Tax Group has earned a global reputation for innovative tax planning and developing solutions that are tax-efficient and practical. We offer decades of experience negotiating and structuring the tax aspects of some of the most complex corporate transactions. Our practice is distinguished by the depth of our team and our attention to client service.

Our lawyers in the United States, Paris and London work closely with our other leading practice areas—including M&A, Capital Markets and Financial Services—to advise on tax matters arising in some of the highest-profile transactions. We develop trusted partnerships with our clients, provide ongoing advice and follow-up post-closing as needed.

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Recent Notable Transactions

  • Canadian Pacific Railway in its superior proposal to acquire Kansas City Southern for $31 billion
  • AT&T’s agreement to combine its WarnerMedia business with Discovery through an all-stock, Reverse Morris Trust transaction
  • Reinvent Technology Partners Z, SPAC, in its $5 billion acquisition of Hippo Enterprises, under which the combined company became publicly traded, and the $550 million PIPE in connection with the merger
  • Fiat Chrysler Automobile N.V. in its $60 billion 50/50 merger with Peugeot, creating Stellantis
  • Anheuser-Busch Companies’ deal to sell a minority stake in its U.S.-based metal container production plants to institutional investors for $3 billion
  •’s $13.7 billion acquisition of Whole Foods Market
  • Alibaba Group Holding Limited’s SEC-registered initial public offering of $25.03 billion, advising the underwriters. This is the largest ever U.S. IPO, the largest ever IPO by a technology company, as well as the largest IPO ever globally

Recent Sullivan & Cromwell Tax Group mergers and acquisitions matters include representations of:
  • Altran (France) in its $2 billion acquisition, through its subsidiary Altran US, of Aricent (U.S.), from a group of investors led by KKR (U.S.).
  • (U.S.) in its $13.7 billion acquisition of Whole Foods Market (U.S.)
  • Andeavor (U.S.) in the merger of Andeavor Logistics (U.S.) and Western Refining Logistics (U.S.) for $1.8 billion and the repositioning of Andeavor Logistics through an IDR buy-in valued at $4 billion
  • AT&T Inc. (U.S.) in its $108.7 billion acquisition of Time Warner Inc. (U.S.)
  • Bayer AG (Germany) in its $66 billion acquisition of Monsanto (U.S.). S&C is also advising Bayer AG on tax aspects of the bond issuances linked to the financing of its acquisition of Monsanto Company

This transaction is the largest M&A transaction announced in 2016. It is also the largest all-cash takeover in history, the largest ever acquisition of an American company by a foreign buyer, and the largest ever M&A transaction by a German company

  • Diageo (U.K.) in its $1 billion acquisition of Casamigos (U.S.) from founders George Clooney, Rande Gerber and Mike Meldman
  • GGP (U.S.) in connection with Brookfield Property Partners' (Bermuda) $28 billion acquisition of all of the outstanding shares of common stock of GGP other than those shares currently held by Brookfield and its affiliates
  • Praxair (U.S.) in its $73 billion merger of equals with Linde (Germany)
  • Scottrade Financial Services, Inc. (U.S.), parent of Scottrade, Inc. (U.S.) and Scottrade Bank (U.S.), in its acquisition by TD Ameritrade Holding Corporation (U.S.) and The Toronto-Dominion Bank (Canada), for $4 billion in cash and TD Ameritrade common stock
Recent S&C Tax Group capital markets matters include representations of:
  • Amgen (U.S.) in its modified Dutch auction tender offer for up to $10 billion in value of shares of its common stock at price per share not greater than $200 nor less than $175. Based on the final count by American Stock Transfer & Trust Co., LLC, the depositary for the tender offer, Amgen accepted for purchase 52,083,333 shares at a purchase price of $192 per share for a total cost of approximately $10 billion, excluding fees and expenses related to the tender offer. As a result of the Tax Cuts and Jobs Act’s deemed repatriation tax, Amgen gained immediate, global access to its entire $41.7 billion balance of cash, cash equivalents and marketable securities, which were used to fund the offer and thereby return capital to shareholders
  • International Bank for Reconstruction and Development (part of the World Bank Group) (IBRD) (U.S.) in its issuance of five classes of earthquake catastrophe bonds, with an aggregate principal amount of $1.36 billion, under its Global Debt Issuance Facility. Each class of bonds (in conjunction with one or more risk transfer agreements) is designed to provide a country with protection against financial losses from earthquakes—two classes for Mexico, and one class each for Chile, Colombia and Peru. In the event of an earthquake that meets the parametric trigger conditions with respect to any class of the bonds, the principal amount of that class will be reduced, and an amount equal to such principal reduction will be made available to the government of the relevant country or, in the case of Mexico, to the Fund for Natural Disasters, a federal administrative trust intended to aid populations adversely affected by natural disasters (FONDEN), via country-specific risk-transfer arrangements
  • Principal Financial Group, Inc. (U.S.) in its establishment of contingent liquidity facilities with an aggregate availability of $750 million through the issuance by High Street Funding Trust I and High Street Funding Trust II, each a newly formed Delaware statutory trust, of Pre-Capitalized Trust Securities (P-Caps). As part of the transactions, Trust I issued $400 million of P-Caps redeemable February 15, 2028 and Trust II issued $350 million of P- Caps redeemable February 15, 2048, in each case in a private offering pursuant to Rule 144A under the Securities Act and Section 3(c)(7) of the Investment Company Act. The Trusts entered into separate put option agreements with Principal, giving Principal the right at its option, and in certain circumstances the obligation, to sell to the Trusts up to $400 million of a new series of 4.111 percent senior unsecured notes due February 15, 2028, in the case of Trust I, and up to $350 million of a new series of 4.682 percent senior unsecured notes due February 15, 2048, in the case of Trust II