When is financial year in US?

In the United States, the federal government's financial year runs from October 1 to September 30 of the following year. This means that the fiscal year is designated by the year in which it ends; for example, fiscal year 2024 runs from October 1, 2023, to September 30, 2024. Most businesses and organizations may follow different fiscal years based on their specific needs, often aligning with the calendar year from January 1 to December 31.