Change to Financial Year

HUlm1 , You can do that in calendar table

You can have code

if([Date] <date(2024,04,01), [Cal  Year], [FY Year])

To calculate cal year and FY year you can check

https://community.powerbi.com/t5/Community-Blog/Creating-Financial-Calendar-Decoding-Date-and-Calendar-1-5-Power/ba-p/1187441
https://medium.com/chandakamit/cheat-sheet-calendar-of-any-standard-month-just-one-variable-apart-5ee47de6a208
https://amitchandak.medium.com/cheat-sheet-power-query-financial-year-calendar-5ceaacb520f1
DAX Calendar - Standard Calendar, Non-Standard Calendar, 4-4-4 Calendar
https://www.youtube.com/watch?v=IsfCMzjKTQ0&t=145s
Power BI Date Table: https://www.youtube.com/watch?v=cN8AO3_vmlY&t=18180s