(a) The fiscal year of the municipality shall begin on the first day of each October in each year and shall end on the last day of September. Such fiscal year shall also constitute the budget and accounting year. As used in this article, the term "budget year" shall mean the fiscal year for which any particular budget is adopted and in which it is administered.
(b) The city manager, at least 45 days prior to the beginning of each budget year, shall submit to the council a budget proposal with explanations. The council shall adopt a budget, by ordinance, prior to the beginning of each fiscal year. The budget so adopted shall be a public record and shall be available for inspection by the general public. Any changes in the budget during the course of the budget year shall be made by ordinance.