# EOMONTH

Returns the date in datetime format of the last day of the month, before or after a specified number of months. Use EOMONTH to calculate maturity dates or due dates that fall on the last day of the month.

## Syntax

EOMONTH(<start_date>, <months>)


### Parameters

Term Definition
start_date The start date in datetime format, or in an accepted text representation of a date.
months A number representing the number of months before or after the start_date. Note: If you enter a number that is not an integer, the number is rounded up or down to the nearest integer.

## Return value

A date (datetime).

## Remarks

• In contrast to Microsoft Excel, which stores dates as sequential serial numbers, DAX works with dates in a datetime format. The EOMONTH function can accept dates in other formats, with the following restrictions:

• If start_date is not a valid date, EOMONTH returns an error.

• If start_date is a numeric value that is not in a datetime format, EOMONTH will convert the number to a date. To avoid unexpected results, convert the number to a datetime format before using the EOMONTH function.

• If start_date plus months yields an invalid date, EOMONTH returns an error. Dates before March 1st of 1900 and after December 31st of 9999 are invalid.

• When the date argument is a text representation of the date, the EDATE function uses the locale and date time settings, of the client computer, to understand the text value in order to perform the conversion. If current date time settings represent a date in the format of Month/Day/Year, then the following string "1/8/2009" is interpreted as a datetime value equivalent to January 8th of 2009. However, if the current date time settings represent a date in the format of Day/Month/Year, the same string would be interpreted as a datetime value equivalent to August 1st of 2009.

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

## Example

The following expression returns May 31, 2008, because the months argument is rounded to 2.

= EOMONTH("March 3, 2008",1.5)