Calculating financial year figures

[ryan8200]

Is there a way to modify the build in excel function so that when I calculate financial year figures, it will not start from January. For an example:
Q1: March- May
Q2: June- August
Q3: September- November
Q4: December- February.

Looking forward to receive the response from the members.

Thanks.

 

[cebalaw2]

What are the Excel functions you want to use with the modified quarters?

 

[ryan8200]

What are the Excel functions you want to use with the modified quarters?

I will try any functions as long as it works.