I believe I have a solution to your issue. You can use the parameter to toggle between FY YTD data or the entire fiscal year. Take a look at the attached viz and let me know if it meets your needs.
FY YTD.twbx 1.1 MB
Hi Ryan -
I've used the following formula:
DATEPART('month', DATEADD('month', 6, TODAY()))>
DATEPART('month', DATEADD('month',6,[Disch Datetime]))
Which shows this year to date compared with last year to date. I also have my date fields set to fiscal year starting in July.
I added that as a filter set to true and then created this YOY line chart.