The Fiscal Calendar tab is where you define your company’s accounting periods independently of the standard calendar year.
This is a required step in building the configuration.

A fiscal calendar has one or more fiscal years, and fiscal years have one or more fiscal periods. Fiscal years have a start date and an end date.
Fiscal periods can vary within a fiscal year, but they typically represent months. In the background, a fiscal quarter is generated every three periods. Fiscal quarters and the fiscal year period are used when budget items are maintained on a quarterly or yearly basis.
Budget is designed to support up to 24 budget periods per year. These periods can be set as monthly, quarterly, or custom-defined. Budget supports projects within either a fiscal or calendar year. Additionally, it supports special projects that follow different calendars or span multiple years — including those that cross from one fiscal year to the next — through the Date Range option in Budget Items.
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