Single Select Slicer with Default Option

Hi  Sonashish  ,

You can use the isfiltered function

According to your description, I created some data:

Here are the steps you can follow：

1. Create measure to calculate the amount of a column when selecting a year

select_year =
var _select=SELECTEDVALUE('Table'[Year])
return CALCULATE(SUM('Table'[amount]),FILTER('Table','Table'[Year]=_select))

Result：

The default is blank ()

2. Use isfiltered to create measure. The default value is 2017

ISFILTERED =
IF(ISFILTERED('Table'[Year]),'Table'[select_year],CALCULATE(SUM('Table'[amount]),FILTER('Table','Table'[Year]=2017)))

Result：

The default value is 2017

You can downloaded PBIX file from here.

Best Regards,

Liu Yang

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