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A notwithstanding clause (French: Clause nonobstant), (Lat: Non Obstante) is a provision in legislation that allows a law to operate despite certain other legal rules, rights, or principles that might otherwise conflict with it. Such clauses are used to assert legislative supremacy and to prevent courts from invalidating or limiting the effect of the statute based on conflicting laws or rights.
In common law jurisdictions, a notwithstanding clause typically uses language such as "notwithstanding any other provision of this Act" or "notwithstanding any law to the contrary". It signals a clear legislative intent that the provision should take precedence over any inconsistent statutory, common law, or constitutional provisions.
In some jurisdictions, notwithstanding clauses have been used to override certain constitutional rights where allowed by law, for example Section 33 of the Canadian Charter of Rights and Freedoms which allows the charter to be overridden on a time limited basis by provincial legislatures.
It can also be used to ensure that statutory provisions prevail over common law principles such as due process if there is a clash, with Section 1983 of the Ku Klux Klan Act
The Illegal Immigration Reform and Immigrant Responsibility Act of 1996 authorises the Homeland Security Secretary, "notwithstanding any other provision of law" to waive legal, particularly environmental requirements blocking construction of border barriers.
In the United Kingdom, legislation has used notwithstanding language to clarify the relationship between an Act and otherwise applicable domestic or international law. The Safety of Rwanda Act stated that its provisions applied notwithstanding specified provisions of the Human Rights Act 1998, the Act was repealed in 2025.
During the Brexit process, the Internal Market Bill initially included provisions enabling ministers to make regulations that would operate despite incompatible domestic or international law. The House of Lords European Union Committee described the relevant provision as a "notwithstanding clause". The provisions were withdrawn before the Bill received royal assent.
In 2010 the European Scrutiny Committee held hearings on the sovereignty clause in the 2010-11 European Union Bill, particularly about whether explicit notwithstanding clauses aimed at European Union law would be upheld by British courts, with most but not all constitutional-law experts who appeared saying that courts were likely to apply them. In 2004, 2007 and 2009 – during the Blair administration – a series of private members' bills proposed that a subsequent Act of Parliament could expressly disapply specified EU obligations by operating notwithstanding the European Communities Act 1972, and later more targeted bills were proposed on restricting benefits to UK nationals and restricting free movement of labour into the UK.