Before You Begin: You need to have a fiscal calendar in Payroll Setup > Fiscal Calendar.
A fiscal calendar is essentially an annual accounting period that might or might not coincide with the calendar year. See The Fiscal Calendar Tab.
The fiscal accumulation period is a plan type that references totals within a period in the fiscal calendar. In the parameters, you need to select a calendar from the Fiscal Calendar drop-down list. You also need to select one of the following options from the Fiscal Period drop-down list: Fiscal Month to Date, Fiscal Quarter to Date, and Fiscal Year to Date.
Fiscal accumulation periods automatically recur. For example, say you create an earning limit of $500 that references an accumulation type for fiscal month to date. If an employee is at the limit in the current fiscal month, the limit goes back to zero in the next fiscal month.