SUM MTD if multiple months are selected in filter

Hi User1021  to proper use MTD values, it is the best when you have Date / Calendar table

In your case, measure MTD could be:

MTD test = TOTALMTD(SUM ( 'Sales invoice line fact'[Invoice TON_] ),'Date'[Date])

'Date'[Date] should be your Calendar / Date key column connected with your table

Create Calendar Table Microsoft Learn

https://learn.microsoft.com/en-us/power-bi/transform-model/desktop-calculated-tables 

TOTALMTD Fuction

https://learn.microsoft.com/en-us/dax/totalmtd-function-dax?WT.mc_id=DP-MVP-4025372 

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