Budget vs. Actual Model in Power BI: Calculations and DAX

In the previous article, I explained how you can build a data model for budget vs. actual, where the grain of the two fact tables is different. The model works perfectly as a star schema. As long as you slice and dice data in the level of granularity that both tables support, then you don’t need anything else. However, if you want to go to lower grain than what the table supports, then you would need more calculations, and DAX can handle that easily. In this article, I’m going to explain some calculations using DAX that helps to go to a lower grain that what the fact table supports. To learn more about Power BI, read Power BI book from Rookie to Rock Star.

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