DAX Customer First Purchase Date Measure

Notes

ALLEXCEPT keeps the CustomerID filter but clears any date filter, so this always returns the true first purchase.

Requirements

• A fact table with customer ID and order date columns.

How to use this measure

1. In Power BI Desktop, select the table that should hold the measure and choose New measure on the ribbon.
2. Paste the code, then replace the placeholder table and column names with your own. The My table names fields above do this for you.
3. Run it through the DAX Formatter if you want it laid out in your team's style.

Related DAX measures

• New CustomersCounts customers whose very first purchase (ever) falls inside the current date filter.
• Repeat Purchase RateExpresses the percentage of customers who placed more than one order, out of all customers.
• First Sale Date, Last Sale DateReturns the earliest and latest dates on which a sale was recorded in the current filter context.
• Retention RateExpresses the percentage of last period's customers who also purchased in the current period.
• Average Customer TenureAverages how many days have passed between each customer's first and most recent purchase.

More DAX resources

Browse all 175 measures in the Power BI DAX Measures Library, or search the library for something similar to Customer First Purchase Date.