Pari passu clause

A pari passu clause (Latin: "on equal footing") is boilerplate language in sovereign and corporate bond contracts stating that the debt ranks equally with the issuer's other unsecured, unsubordinated obligations. Historically, the clause was understood to protect creditors against legal subordination — i.e., the issuer cannot legislate or contract some bondholders into a junior position — rather than to require pro rata payment to all creditors.

That conventional reading was upended in NML Capital, Ltd. v. Republic of Argentina. After Argentina's 2001 default and subsequent 2005 and 2010 debt exchanges, holdout creditors led by NML Capital (an Elliott Management affiliate) sued in the U.S. Southern District of New York. Judge Thomas Griesa ruled in 2012 that Argentina's pari passu clause required ratable payment: Argentina could not pay exchange bondholders without simultaneously paying holdouts in full. The U.S. Court of Appeals for the Second Circuit affirmed in 2013, and the Supreme Court denied certiorari in June 2014. When Argentina refused to pay the holdouts roughly $1.5 billion, it entered a technical default in July 2014, resolved only after Mauricio Macri's government settled in early 2016 for about $4.65 billion.

The ruling alarmed sovereign debt markets because it gave holdouts powerful leverage to block restructurings. In response:

• The International Capital Market Association (ICMA) published model clauses in August 2014 clarifying that pari passu does not require ratable payment.
• New sovereign bond issues increasingly pair the revised clause with single-limb collective action clauses (CACs) allowing supermajority creditor votes to bind holdouts across series.
• The IMF endorsed these reforms in October 2014 to reduce future restructuring frictions.

For delegates and researchers, the clause illustrates how a single line of contractual boilerplate can reshape sovereign debt diplomacy, complicate IMF programs, and influence debates at UNCTAD and the UN General Assembly — including the 2015 UNGA resolution on principles for sovereign debt restructuring.