Chase Bank USA, N. A. v. McCoy
The Court ruled that Chase Bank did not have to notify a cardholder before raising his interest rate for defaulting, because the older version of a federal banking regulation was unclear and the Federal Reserve Board's own reading of it favored Chase.
The decision leans on a rule of deference to agencies' interpretations of their own ambiguous regulations, here accepted through a legal brief the Board filed at the Court's request rather than through formal rulemaking.
How it got here: A federal trial court dismissed McCoy's claim, the Ninth Circuit reversed in his favor, and Chase asked the Supreme Court to resolve a split with the First Circuit.
The Case in Depth
What happened
A cardholder, James McCoy, held a Chase credit card that offered a lower "Preferred" rate as long as he made timely payments, with Chase reserving the right to raise the rate up to a stated maximum if he defaulted. After Chase raised his rate for delinquency and applied it retroactively without telling him beforehand, McCoy sued, arguing federal disclosure rules required advance warning.
The question before the Court
Did a credit card company have to warn a cardholder before raising his interest rate for missing payments, even though the contract already listed the maximum rate?
The Court's answer
No — at the time of these transactions, Regulation Z did not require Chase to give McCoy advance notice before raising his interest rate for delinquency, because the agreement had already disclosed both the trigger for the increase and the maximum rate Chase could charge. The regulation's text was genuinely ambiguous about whether implementing a pre-set default rate counted as a "change in terms," so the Court deferred to the Federal Reserve Board's own reasonable reading of its regulation, offered in a brief at the Court's invitation.
The Court found no reason to doubt the Board's sincerity, since the Board wasn't defending its own past conduct and its position matched views it had expressed years earlier. The Board's official written commentary on the regulation was equally unclear, so it gave no reason to reject the Board's litigation-brief interpretation.
Curious how the Court got there? See the step-by-step legal reasoning →
Why it matters
Credit card companies operating under the older rules got confirmation that raising a customer's rate under a pre-disclosed default clause did not trigger an advance-notice requirement. The ruling also shows how much weight courts can give an agency's own explanation of a fuzzy regulation, even when that explanation shows up in a courtroom brief rather than a formal rule.
What changes now
The case goes back to the Ninth Circuit for further proceedings consistent with the ruling, meaning McCoy's federal disclosure claim under the old regulation cannot succeed on the theory the appeals court had adopted. The regulation at issue was already replaced in 2009 by new rules and by the Credit CARD Act requiring 45 days' advance notice of most rate increases, so the decision mainly resolves disputes over transactions predating those changes.
What this does not decide
The ruling applies only to the pre-2009 version of Regulation Z; Congress and the Board have since required 45 days' advance notice of most credit card rate increases under the Credit CARD Act and revised regulations, so this decision does not affect current disclosure requirements.
How the Court got there
The legal reasoning, step by step
- The Court first asked whether raising McCoy's rate under the contract's default clause counted as a 'change in terms' requiring advance disclosure under the applicable regulation, Regulation Z, or merely put into effect a rate already spelled out in the agreement.
- Finding the regulatory text genuinely open to both readings, the Court applied Auer deference — the principle that courts generally accept an agency's own reasonable reading of its ambiguous regulation, even when that reading is offered in a legal brief rather than a formal rule.
- The Court found the Federal Reserve Board's litigation-brief interpretation trustworthy because the Board was not a party defending its own past conduct, and its position matched views the Board had expressed years earlier in official rulemaking notices.
- Because the Board's interpretation was reasonable and not contradicted by the text, the Court accepted the Board's view that no advance notice was required when the contract had already disclosed both the trigger for a rate increase and the maximum rate that could result.
- The Court then checked the Board's official written commentary on the regulation and found it just as ambiguous as the regulation itself, so nothing there displaced the interpretation offered in the Board's brief.
Doctrinal impact
Cases affected by this decision
Reaffirms Auer v. Robbins (519 U. S. 452)
The Court relied on Auer's rule that courts defer to an agency's reasonable reading of its own ambiguous regulation.
Distinguishes Gonzales v. Oregon (546 U. S. 243)
The Court said Gonzales did not apply because that regulation just restated a statute, unlike here.
Distinguishes Christensen v. Harris County (529 U. S. 576)
The Court said Christensen did not apply because that regulation was unambiguous, unlike Regulation Z here.