A statement of reasons in administrative law is the written explanation a federal agency gives for a decision it has made: the facts it found, the legal standards it applied, and the reasoning that connects them. The Administrative Procedure Act requires this explanation in several settings, and the Due Process Clause can require one even when no statute does. It matters because when you challenge an agency decision, the court looks at the reasons the agency actually wrote down. Nothing more.
What the Statement Has to Contain
The fullest version of the requirement sits in Section 557(c) of the APA, which governs formal adjudications. Every decision in that category must include “findings and conclusions, and the reasons or basis therefor, on all the material issues of fact, law, or discretion presented on the record.”1Office of the Law Revision Counsel. 5 U.S. Code 557 – Initial Decisions; Conclusiveness; Review by Agency Three pieces, each doing distinct work.
- Findings of fact. These are the agency’s determinations of what happened or what conditions exist, drawn from the record. Not summaries of testimony. Not lists of exhibits. Conclusions about reality.
- Conclusions of law or policy. The statement identifies the legal standard or policy framework being applied, and whether the facts satisfy it.
- The reasoning that links them. A decision that recites the law, lists the facts, and jumps to a result is incomplete. The agency has to show its work.
Outside formal adjudication the detail required drops, but the core idea holds: the explanation has to be enough for you to know why you lost and enough for a judge to see whether the decision was lawful.
When an Agency Owes You Reasons
The trigger depends on the kind of action involved.
Formal adjudication. When a statute directs the agency to decide “on the record after opportunity for an agency hearing,” Sections 554 through 557 of the APA apply in full, and the full Section 557(c) explanation is required.2Office of the Law Revision Counsel. 5 U.S. Code 554 – Adjudications Certain professional licensing proceedings and benefit determinations run on this track.
Denied applications and petitions. If you file a written request with a federal agency and it is denied in whole or part, Section 555(e) requires prompt notice with “a brief statement of the grounds for denial,” unless the denial just affirms a prior one or the reason is self-evident.3Office of the Law Revision Counsel. 5 U.S. Code 555 – Ancillary Matters A brief statement is a lower bar than Section 557(c), but it is still a real obligation.
Rulemaking. When an agency finalizes a regulation, Section 553 requires “a concise general statement of their basis and purpose.”4Office of the Law Revision Counsel. 5 U.S. Code 553 – Rule Making The focus here is on justifying the policy choice to the public and to reviewing courts, not explaining a particular person’s outcome.
Informal adjudication. This is the vast middle ground: agency decisions that are neither formal adjudications nor rulemakings. The APA itself doesn’t spell out procedures here. What explanation the agency owes comes from the Due Process Clause, from the agency’s own regulations, or from the specific statute the agency administers.
Due process backstop. Even where no statute mandates reasons, the Fifth Amendment can. In Goldberg v. Kelly, the Supreme Court held that when the government terminates welfare benefits the decision-maker “should state the reasons for his determination and indicate the evidence he relied on,” though the statement “need not amount to a full opinion or even formal findings of fact and conclusions of law.”5Library of Congress. Goldberg v. Kelly, 397 U.S. 254 (1970) That principle reaches well beyond welfare. Whenever the government deprives you of a protected interest, due process may demand an explanation, with the strength of the demand rising with the stakes.
The Reasons the Agency Gave Are the Only Reasons That Count
This is the single most consequential rule in this area, and understanding it reshapes how you read an agency decision. Under SEC v. Chenery Corp., a reviewing court cannot save an agency decision by supplying a better justification than the one the agency itself provided. If the grounds the agency invoked “are inadequate or improper, the court is powerless to affirm the administrative action by substituting what it considers to be a more adequate or proper basis.”6Justia Law. SEC v. Chenery Corp., 332 U.S. 194 (1947)
The practical effect: the agency’s lawyers cannot show up in court with new reasoning they came up with during litigation. Whatever the agency wrote down at the time of the decision is what the agency is stuck with. A vague or conclusory statement is a weak foundation, and no amount of post-hoc argument can shore it up. Conversely, if the written reasoning has holes, those holes are the opening for a challenge.
How Courts Test the Reasoning
The APA gives courts two main standards for reviewing agency reasoning, and which applies depends on the kind of action.
Arbitrary and Capricious
Under Section 706(2)(A), a court will set aside agency action that is “arbitrary, capricious, an abuse of discretion, or otherwise not in accordance with law.”7Office of the Law Revision Counsel. 5 U.S. Code 706 – Scope of Review This is the standard for most agency decisions, including informal rulemaking. The Supreme Court fleshed it out in Motor Vehicle Manufacturers Association v. State Farm: an agency “must examine the relevant data and articulate a satisfactory explanation for its action,” and the court must consider “whether the decision was based on a consideration of the relevant factors and whether there was a clear error of judgment.”8Legal Information Institute. Motor Vehicle Manufacturers Association v. State Farm Mutual, 463 U.S. 29 (1983)
Under State Farm, the agency’s reasoning is normally arbitrary and capricious if the agency relied on factors Congress did not intend it to consider, entirely failed to address an important aspect of the problem, offered an explanation that contradicts the evidence before it, or reached a conclusion so implausible that it cannot be attributed to a legitimate difference of opinion.8Legal Information Institute. Motor Vehicle Manufacturers Association v. State Farm Mutual, 463 U.S. 29 (1983) Each prong focuses on what the statement of reasons says and whether it holds up.
Substantial Evidence
For formal adjudications and other proceedings reviewed on a hearing record, Section 706(2)(E) applies: factual findings fall if “unsupported by substantial evidence.”7Office of the Law Revision Counsel. 5 U.S. Code 706 – Scope of Review The Supreme Court has defined substantial evidence as “such relevant evidence as a reasonable mind might accept as adequate to support a conclusion.” Still a deferential standard, but it requires a real evidentiary foundation in the record, not just plausible-sounding prose.
Both standards work from the full administrative record as it stood when the agency acted, not fresh evidence introduced in court. Citizens to Preserve Overton Park v. Volpe made that explicit: judicial review “is to be based on the full administrative record that was before the Secretary at the time he made his decision.”9Justia Law. Citizens to Preserve Overton Park v. Volpe, 401 U.S. 402 (1971) The statement of reasons is how the court navigates that record.
What Happens if the Explanation Falls Short
When a court finds the reasoning inadequate, the usual outcome is to vacate the decision and send it back. Section 706 directs courts to “set aside” agency action that fails the applicable standard.7Office of the Law Revision Counsel. 5 U.S. Code 706 – Scope of Review The decision is invalidated and the agency gets another try: either reach the same result with a proper explanation, or reconsider.
That is worth understanding before you file. Winning on a reasoning defect does not necessarily mean winning on the merits. The agency may rewrite its explanation, land in the same place, and have that new decision survive review. But a remand also forces the agency to look again at the record, and sometimes a fresh look produces a different result.
Reading the Statement to Build a Challenge
If you are the one on the losing end, the statement of reasons is both the first thing to read and the foundation of any appeal. Work through it in three passes.
First, check whether the factual findings match the record. If the agency says it relied on a document or on testimony that does not actually support what the agency claims, you have a substantial-evidence argument.
Second, examine the legal standard. An agency that misreads its own statute or regulation has committed legal error, and courts review legal questions without deference to the agency.
Third, look at the connective reasoning. Even when the findings are supported and the legal standard is right, the decision can fail if the agency skipped a step, ignored contrary evidence, or failed to grapple with an important aspect of the problem.
Because of Chenery, the agency cannot patch any of these problems in litigation.6Justia Law. SEC v. Chenery Corp., 332 U.S. 194 (1947) What the statement says is what the agency is defending. Reading it carefully, line by line, is the most important step in preparing an administrative appeal.