Wis. Stat. § 755.04
The governing body shall fix a salary for the judge. The salary may be increased by the governing body before the start of the 2nd or a subsequent year of service of the term of the judge, but shall not be decreased during a term. The salary of a municipal judge who is designated or appointed under s. 8.50(4) (fm) or 800.06 shall be determined by contract between the municipality and the judge. The judge may not serve until the contract is entered into. Salaries may be paid annually or in equal installments as determined by the governing body, but no judge may be paid a salary for any time during the term during which the judge has not executed and filed his or her official bond or official oath, as required by s. 755.03.
Wis. Stat. § 755.04