
In U.S. constitutional law, rational basis review is the standard test used by courts to determine whether a law is rationally related to a legitimate government interest. This test prohibits the government from imposing arbitrary restrictions on liberty and drawing distinctions between persons that serve no constitutionally legitimate purpose. While the Supreme Court has never set forth standards for determining legitimate government interests, a law must bear a rational relationship to such an interest to pass the rational basis test. This test is applied to constitutional challenges of federal and state law, and laws are presumed to be constitutional under this review.
| Characteristics | Values |
|---|---|
| Purpose | To determine whether a law is "rationally related" to a "legitimate" government interest, whether real or hypothetical |
| Application | Constitutional questions, including due process or equal protection questions under the Fifth or Fourteenth Amendments |
| Scrutiny Levels | Intermediate scrutiny and strict scrutiny |
| Scrutiny Application | Where a suspect or quasi-suspect classification is involved, or a fundamental right is implicated |
| Outcome | Only the most egregious enactments, not rationally related to a legitimate government interest, are overturned |
| Prohibition | The government is prohibited from imposing restrictions on liberty that are irrational or arbitrary |
| Legislation | The rational basis test is applied to constitutional challenges of both federal law and state law |
| Court Ruling | A court applying rational basis review will virtually always uphold a challenged law unless every conceivable justification for it is a grossly illogical non sequitur |
| State's Role | A state need not produce any evidence demonstrating the rationality of the classification at issue |
| Legislature's Role | The legislature does not need to articulate any purpose or rationale supporting the classification |
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What You'll Learn
- The rational basis test prohibits the government from imposing arbitrary restrictions on liberty
- Rational basis review is the standard of review that courts apply when considering constitutional questions
- The rational basis test is used in most circumstances, such as reviewing economic regulations
- Rational basis review asks whether there is a rational relationship between disparity of treatment and a legitimate government purpose
- The Supreme Court has never set forth standards for determining what constitutes a legitimate government interest

The rational basis test prohibits the government from imposing arbitrary restrictions on liberty
The rational basis test is a standard of review that courts apply to determine whether a law or government action violates the equal protection clause. It is the most commonly used standard of review, and is applied to constitutional challenges of both federal and state law.
The test prohibits the government from imposing arbitrary restrictions on liberty by requiring that laws are "rationally related" to a "legitimate" government interest. This means that there must be some conceivable legitimate purpose to which the law could be rationally related. The legitimacy of the government interest is determined by whether it serves a constitutionally legitimate end.
The rational basis test does not consider the legislature's actual reasons for enacting a statute, nor does it inquire into whether the statute furthers a legitimate government end. Instead, it focuses on the existence of a legitimate purpose, whether real or hypothetical. The Supreme Court has never set forth standards for what constitutes a legitimate government interest, and it is considered entirely irrelevant what end the government is actually seeking.
The rational basis test is a less intensive form of review than "strict scrutiny" or "intermediate scrutiny", which are applied when legislation affects certain types of persons who have been historically discriminated against, such as race or national origin.
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Rational basis review is the standard of review that courts apply when considering constitutional questions
In U.S. constitutional law, rational basis review is the standard review process that courts apply when considering constitutional questions. It is a test to determine whether a law or government regulation or action violates the equal protection clause. The rational basis test is used in most circumstances, such as reviewing economic regulations. The rational basis test prohibits the government from imposing restrictions on liberty that are irrational or arbitrary or drawing distinctions between persons in a manner that serves no constitutionally legitimate end.
The rational basis test asks whether there is a rational relationship between the disparity of treatment and some legitimate governmental purpose. The Supreme Court has never set forth standards for determining what constitutes a legitimate government interest. Under rational basis review, it is "entirely irrelevant" what end the government is actually seeking, and statutes can be based on "rational speculation unsupported by evidence or empirical data". If the court can merely hypothesize a "legitimate" interest served by the challenged action, it will withstand rational basis review.
In determining whether there exists such a legitimate goal, courts will grant great latitude and deference to the legislature. A court applying rational basis review will virtually always uphold a challenged law unless every conceivable justification for it is a grossly illogical non sequitur. The rational basis review can be traced to an influential 1893 article, "The Origin and Scope of American Constitutional Law", by Harvard law professor James Bradley Thayer. Thayer argued that statutes should be invalidated only if their unconstitutionality is "so clear that it is not open to rational question".
The rational basis review is one of three levels of review applied in Equal Protection and Due Process cases, the other two being intermediate scrutiny and strict scrutiny. Strict scrutiny is applied when legislation affects certain types of persons that the Supreme Court has found are due additional protection because they have been discriminated against historically, such as laws that affect persons based on their race, a "suspect class".
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The rational basis test is used in most circumstances, such as reviewing economic regulations
The rational basis test is a standard review process that courts apply when considering constitutional questions. It is used to determine whether a law or government action violates the equal protection clause and is used in most circumstances, including reviewing economic regulations. The test prohibits the government from imposing restrictions on liberty that are irrational or arbitrary or drawing distinctions between persons in a manner that serves no constitutionally legitimate end.
The rational basis test asks whether there is a "rational relationship" between a disparity of treatment and some "legitimate" government purpose. The Supreme Court has never set forth standards for determining what constitutes a legitimate government interest. However, if the court can merely hypothesize a "legitimate" interest served by the challenged action, it will withstand rational basis review. Under this test, laws are presumed to be constitutional, and courts will grant great latitude and deference to the legislature.
The rational basis test is less intensive than "strict scrutiny" or "intermediate scrutiny," which are applied when legislation affects certain types of persons that the Supreme Court has found are due additional protection because they have been historically discriminated against. For example, laws that affect persons on account of their race, a "suspect class," are subject to strict scrutiny and must be justified by the government with a compelling reason.
The rational basis test can be traced back to an influential 1893 article by Harvard law professor James Bradley Thayer, who argued that statutes should be invalidated only if their unconstitutionality is "so clear that it is not open to rational question."
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Rational basis review asks whether there is a rational relationship between disparity of treatment and a legitimate government purpose
Rational basis review is a test used by courts to determine whether a law or government action violates the equal protection clause. It is the normal standard of review that courts apply when considering constitutional questions, including due process or equal protection questions under the Fifth Amendment or Fourteenth Amendment.
The rational basis review asks whether there is a rational relationship between disparity of treatment and a legitimate government purpose. In other words, it tests whether the government's actions are "rationally related" to a "legitimate" government interest. The Supreme Court has never set forth standards for determining what constitutes a legitimate government interest. However, if the court can merely hypothesize a "legitimate" interest served by the challenged action, it will withstand rational basis review.
The rational basis test prohibits the government from imposing restrictions on liberty that are irrational or arbitrary or drawing distinctions between persons in a manner that serves no constitutionally legitimate end. While a law can be enacted for broad and ambitious purposes, it must bear "a rational relationship to a legitimate governmental purpose". It is important to note that rational basis review is not a genuine effort to determine the legislature's actual reasons for enacting a statute, nor to inquire into whether a statute furthers a legitimate end of government.
The rational basis test is applied in most circumstances, such as reviewing economic regulations. It is less intensive than "strict scrutiny" or "intermediate scrutiny," which are applied when legislation affects certain types of persons that have been historically discriminated against, such as race or national origin.
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The Supreme Court has never set forth standards for determining what constitutes a legitimate government interest
In U.S. constitutional law, rational basis review is the standard of review that courts apply when considering constitutional questions, including due process or equal protection questions under the Fifth Amendment or Fourteenth Amendment. The rational basis test prohibits the government from imposing restrictions on liberty that are irrational or arbitrary or drawing distinctions between persons in a manner that serves no constitutionally legitimate end.
Under rational basis review, a court asks only whether a governmental regulation might serve some "legitimate" governmental interest. This is the lowest level of scrutiny, with intermediate scrutiny and strict scrutiny being higher levels. In the context of the free exercise of religion, the Court has ruled that legitimate concerns about administrative difficulties, such as uncovering fraudulent unemployment claims, do not limit free exercise rights.
While a law "enacted for broad and ambitious purposes can often be explained by reference to legitimate public policies which justify the incidental disadvantages they impose on certain persons", it must, at the very least, bear "a rational relationship to a legitimate governmental purpose". In other words, a law must be “rationally related" to a "legitimate" government interest, whether real or hypothetical.
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Frequently asked questions
It is a test used to determine whether a law or government action violates the equal protection clause.
It is used to determine whether a law is "rationally related" to a "legitimate" government interest.
The law will either be deemed constitutional or unconstitutional.
Strict scrutiny is applied when legislation affects certain types of persons that have been discriminated against historically, such as race, which is deemed a "suspect class".
Nebbia v. New York, where the Court stated that "a State is free to adopt whatever economic policy may reasonably be deemed to promote public welfare, and to enforce that policy by legislation adapted to its purpose".

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