# OPENINGBALANCEYEAR

Evaluates the expression at the first date of the year in the current context.

## Syntax

OPENINGBALANCEYEAR(<expression>,<dates>[,<filter>][,<year_end_date>])


### Parameters

Term Definition
expression An expression that returns a scalar value.
dates A column that contains dates.
filter (optional) An expression that specifies a filter to apply to the current context.
year_end_date (optional) A literal string with a date that defines the year-end date. The default is December 31.

## Return value

A scalar value that represents the expression evaluated at the first date of the year in the current context.

## Remarks

• The dates argument can be any of the following:

• A reference to a date/time column.
• A table expression that returns a single column of date/time values.
• A Boolean expression that defines a single-column table of date/time values.
• Constraints on Boolean expressions are described in the topic, CALCULATE function.

• The filter expression has restrictions described in the topic, CALCULATE function.

• The year_end_date parameter is a string literal of a date, in the same locale as the locale of the client where the workbook was created. The year portion of the date is ignored.

• This function is not supported for use in DirectQuery mode when used in calculated columns or row-level security (RLS) rules.

## Example

The following sample formula creates a measure that calculates the 'Year Start Inventory Value' of the product inventory.

= OPENINGBALANCEYEAR(SUMX(ProductInventory,ProductInventory[UnitCost]*ProductInventory[UnitsBalance]),DateTime[DateKey])