Thank you for posting this. It did give me the idea on how to work this out. However, I think I have made it even more dynamic. My FY is April - March. Here is the formula that I used which works as well but it is dynamic:
Fiscal Year Quarter Cut Off works well and it applies to all no matter when the Fiscal Year start, April or October.
If you are looking for Fiscal Year CutOff to dynamically display measures of "Current Fiscal Year", "Previous Fiscal Year" and etc., Here are the steps and DAX will work. Please comment if this works, Thank you.
Note: Fiscal Year Start from April 1st in this example.
Fiscal Year Number= If( Month(Date[date])<= 3, Year(Date[date])-1, Year(Date[date]) )
Current Fiscal Year Number = If(
Month(today())<= 3, Year(today())-1, Year(today()) )
Fiscal Year CutOff = Date[Fiscal Year Number]-Date[Current Fiscal Year Number]