A fiscal year typically spans 12 calendar months and always follows the previous one. The selected fiscal year is displayed in the header of the side navigation.
go to the Company menu – Change or Add Fiscal Year,
click the Manage Fiscal Years button,
to add a new fiscal year, click the New button,
on the Basic Information tab, fill in the Abbreviation field, i.e. the name of the year, e.g. 2018, then the Valid From date field, e.g. 1/1/2018, and the Valid To date field, e.g. 12/31/2018,
filling in the Texts tab is optional,
save the new fiscal year by clicking the Save and Close button.