Please Note: This article is written for users of the following Microsoft Excel versions: 2007, 2010, 2013, 2016, 2019, 2021, and Excel in Microsoft 365. If you are using an earlier version (Excel 2003 or earlier), this tip may not work for you. For a version of this tip written specifically for earlier versions of Excel, click here: Using the EOMONTH Function.
Written by Allen Wyatt (last updated July 2, 2022)
This tip applies to Excel 2007, 2010, 2013, 2016, 2019, 2021, and Excel in Microsoft 365
The EOMONTH function is used to return the serial number value for the last day of any particular month, past, present, or future. The syntax for the function is as follows:
=EOMONTH(base, offset)
The base value is a date from which the function should do its calculations, and the offset is a number that indicates how many months from the base date should be used. For instance, an offset of 0 would indicate that EOMONTH should return the last day of the month represented in base, whereas an offset of 4 would be four months after base, and -2 would be two months before.
As an example, the following are typical uses of EOMONTH. The first line can be used to return the last day of the current month, and the second line returns the last day of the month six months later than the date in A1:
=EOMONTH(NOW(),0) =EOMONTH(A1,6)
Remember that EOMONTH returns a serial number. Excel does not automatically format the serial number as a date. In other words, you will need to explicitly format the cell as a date.
ExcelTips is your source for cost-effective Microsoft Excel training. This tip (12156) applies to Microsoft Excel 2007, 2010, 2013, 2016, 2019, 2021, and Excel in Microsoft 365. You can find a version of this tip for the older menu interface of Excel here: Using the EOMONTH Function.
Dive Deep into Macros! Make Excel do things you thought were impossible, discover techniques you won't find anywhere else, and create powerful automated reports. Bill Jelen and Tracy Syrstad help you instantly visualize information to make it actionable. You’ll find step-by-step instructions, real-world case studies, and 50 workbooks packed with examples and solutions. Check out Microsoft Excel 2019 VBA and Macros today!
Need to figure out the least common multiple of a range of values? It is a snap when you use the LCM function, described ...
Discover MoreExcel provides a handy worksheet function that allows you to forecast values based upon a set of known values. This ...
Discover MoreIf you need to insert into a cell the name of the workbook in which a worksheet is contained, you can use the CELL ...
Discover MoreFREE SERVICE: Get tips like this every week in ExcelTips, a free productivity newsletter. Enter your address and click "Subscribe."
There are currently no comments for this tip. (Be the first to leave your comment—just use the simple form above!)
Got a version of Excel that uses the ribbon interface (Excel 2007 or later)? This site is for you! If you use an earlier version of Excel, visit our ExcelTips site focusing on the menu interface.
FREE SERVICE: Get tips like this every week in ExcelTips, a free productivity newsletter. Enter your address and click "Subscribe."
Copyright © 2026 Sharon Parq Associates, Inc.
Please Note:
This article is written for users of the following Microsoft Excel versions: 2007, 2010, 2013, 2016, 2019, 2021, and Excel in Microsoft 365. If you are using an earlier version (Excel 2003 or earlier), this tip may not work for you. For a version of this tip written specifically for earlier versions of Excel, click here:
Comments