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The Severance Clause, also known as a Severability Clause, is a legal provision that may be included in a contract or legislation that states that if part or parts of the contract or legislation is determined to be invalid, unenforceable or unconstitutional that the remainder of the contract or legislation is still valid or in effect. If a contract or legislation does not include a Severability Clause and any part of is ruled to be illegal or unenforceable then the entire contract or legislation is voided.

The "severability" section of a contract is a "safety valve" that prevents the whole contract from blowing up if one part of it is deemed illegal for some reason.

For instance, if you agree to provide free services to private citizens, but it becomes illegal to provide such free services, then that part of the contract is "severed" from the agreement to the extent it would not materially impede the rest of the agreement.

Cross liability works as a severability of interest. These are clauses in commercial insurance contracts which means the policy applies separately to each insured party.