Any municipality may by ordinance provide that the tax year for such municipality shall commence on October 1 of each year and end on the next succeeding September 30 and provide for the effective date of such ordinance and further provide that on and after each October 1 after the effective date of such ordinance municipal taxes shall be based and due on state and county assessments for the preceding tax year and shall be due and delinquent at the time when the state and county taxes for the preceding tax year are due and delinquent.
All cities whose taxes were, prior to the adoption of the 1940 Code, assessed and collected under 1911 Acts, p. 130, or 1931 Acts, p. 337, shall continue under the provisions of this article without passage of any ordinance.