Oregon Revised Statutes Public Financial Administration § 294.095

Wherever it is provided by law that any action or proceeding of any county, city, school district or other municipal corporation or body politic shall be taken with respect to a budget or tax levy for the calendar year, or for a fiscal year closing on any day other than June 30, each such action or proceeding shall be taken with respect to the fiscal year commencing on July 1 and closing on June 30.