Lex loci solutionis

The lex loci solutionis is the Latin term for "law of the place where relevant performance occurs" in the conflict of laws. Conflict is the branch of public law regulating all lawsuits involving a "foreign" law element where a difference in result will occur depending on which laws are applied.

When a case comes before a court and all the main features of the case are local, the court will apply the lex fori, the prevailing municipal law, to decide the case. But if there are "foreign" elements to the case, the forum court may be obliged under the conflict of laws system to consider:

The lex loci solutionis is one of the possible choice of law rules applied to cases testing the validity of a contract and in tort cases. For example, suppose that a person domiciled in Bolivia and a person habitually resident in Germany, make a contract by e-mail. They agree to meet in Arizona to research a book. The possibly relevant choice of law rules would be:

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