sunset clause

[/ˈsʌn.set klɔːz/]
nounpl: sunset clauses
cláusula de caducidade
1. A provision in a law, contract, or agreement that automatically terminates or expires on a specified date unless it is renewed or reauthorized
The tax cut included a sunset clause that would expire in five years unless Congress voted to extend it.
O corte de impostos incluía uma cláusula de caducidade que expiraria em cinco anos a menos que o Congresso votasse para prorrogá-la.
2. A built-in expiration date designed to force periodic review and renewal of legislation or agreements
The environmental regulation has a sunset clause requiring the agency to reassess its effectiveness every three years.
A regulação ambiental possui uma cláusula de caducidade que exige que a agência reavalie sua eficácia a cada três anos.
Sunset clauses are commonly used in U.S. legislative practice as a mechanism to enforce periodic review of government programs and spending. This concept reflects American legislative culture where temporary measures can be made permanent through renewed authorization. In Brazil and Portugal, the term is primarily used in formal legal and legislative contexts, though it is less systematically employed than in the United States.
Synonyms / Sinônimos
expiration clausetermination clausetime-limit provisionautomatic expiration clause
Antonyms / Antônimos
perpetual clauseevergreen clause

Regional Variations

General Brazilian
cláusula de caducidade
Standard term used in legal and legislative contexts
Brazil
cláusula de extinção automática
Alternative formal term emphasizing automatic termination
São Paulo
cláusula de validade limitada
Business and contract terminology
Portugal
cláusula de caducidade
Same as Brazilian Portuguese, used in legal contexts

Related Words

legislationcontract lawreauthorizationstatutory terminationautomatic terminationrenewal provision

Related Idioms & Phrases

let something sunset
allow legislation to sunset
sunset provision
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