You'd need to create a calculated field in a string format. Unfortunately, in calculated fields, date fields don't account for the fiscal start month that you've configured, so the calculated field would first need to account for that. I'd suggest starting with a calculated field to give you fiscal year:
// Calculated fiscal year.
IF MONTH([Period])<4 THEN
Then you can create another that formats this.
Fiscal Year String
// Format fiscal year as FY YYYY-YY
"FY " + STR([Fiscal Year]-1) + "-" + RIGHT(STR([Fiscal Year]),2)
Fiscal year.twbx 351.1 KB