Updating a date with a slicer within a DAX Formula

Hi missbuildaviz ,

You can update the formula of measure [Status (Date Input_Remediation] as below and check if it can return your expected result...

Status (Date Input_Remediation =
VAR _seldate =
    SELECTEDVALUE ( DateTable[EndOfMonth] )
RETURN
    IF (
        'DataSet'[Action Plan: Remediation Date] < _seldate,
        "Past Due",
        IF (
            'DataSet'[Action Plan: Remediation Date] <= EDATE ( _seldate, 3 ),
            "Due Within the Next 3 Months",
            IF (
                'DataSet'[Action Plan: Remediation Date] <= _seldate + 1460,
                "Due after 90 Days",
                " "
            )
        )
    )

If the above one can't help you get the expected result, please provide some raw data in your table 'DataSet' (exclude sensitive data) with Text format and your expected result with special examples and screenshots. You can refer the following link to share the required info:

How to provide sample data in the Power BI Forum

And It is better if you can share a simplified pbix file. You can refer the following link to upload the file to the community. Thank you.

How to upload PBI in Community

Best Regards