The EOMONTH function in Excel is a powerful tool that automatically calculates the last day of any month, relative to a specified date. Whether you’re managing financial reports, scheduling payments, or planning project milestones, EOMONTH helps you determine exact month-end dates without manual calculation. Let’s explore how to use this function effectively and see it in action through practical examples.

Calculate End-of-Month Dates with EOMONTH

The EOMONTH function uses a simple syntax:

=EOMONTH(start_date, months)

Where:

• start_date: Your reference date (required)
• months: Number of months to move forward or backward (required)

Let’s examine some basic examples:

Formula	Result (as of Jan 2024)	Description
=EOMONTH(TODAY(), 0)	1/31/2024	End of current month
=EOMONTH(TODAY(), 1)	2/29/2024	End of next month
=EOMONTH(TODAY(), -1)	12/31/2023	End of previous month

Find Last Day of Current Month

To find the last day of the current month:

1. Open your spreadsheet
2. Select the cell where you want the result
3. Enter the formula: =EOMONTH(TODAY(),0)
4. Press Enter

Tips for handling different date formats:

• Combine with TEXT function for custom formatting: =TEXT(EOMONTH(TODAY(),0),”mm/dd/yyyy”)

• Use FORMAT function for regional settings: =FORMAT(EOMONTH(TODAY(),0),”mmmm d, yyyy”)

Calculate Future Month-End Dates

Creating a series of future month-end dates:

1. Start with your base formula in cell A1: =EOMONTH(TODAY(),0)

1. For subsequent months:
   • Cell A2: =EOMONTH(TODAY(),1)

• • Cell A3: =EOMONTH(TODAY(),2)

• • Continue pattern for desired months

Example sequence:

Formula	Result (as of Dec 2024)
=EOMONTH(TODAY(),0)	12/31/24
=EOMONTH(TODAY(),1)	1/31/25
=EOMONTH(TODAY(),2)	2/28/25
=EOMONTH(TODAY(),3)	3/31/25

Working with Past Month-End Dates

To find past month-end dates, use negative numbers in the months parameter:

Formula	Result (as of DEC 2024)	Description
=EOMONTH(TODAY(),-1)	11/30/24	Previous month end
=EOMONTH(TODAY(),-3)	9/30/24	Three months ago
=EOMONTH(TODAY(),-12)	12/31/23	One year ago

Quarterly Date Calculations

For quarterly end dates:

1. Use multiples of 3 in your EOMONTH formula
2. Example for Q1 2024: =EOMONTH(TODAY(),3)

Formula	Result (as of DEC 2024)	Quarter
=EOMONTH(TODAY(),0)	12/31/24	Q1 Start
=EOMONTH(TODAY(),3)	3/31/25	Q1 End
=EOMONTH(TODAY(),6)	6/30/25	Q2 End

Combine EOMONTH with Other Date Functions

Create powerful date calculations by combining EOMONTH with other functions:

First Day of Month Calculations

To find the first day of next month:

=EOMONTH(TODAY(),0)+1

Creating date ranges:

=”From ” & EOMONTH(TODAY(),-1)+1 & ” to ” & EOMONTH(TODAY(),0)

Example combinations:

Purpose	Formula	Result
Month Start	=EOMONTH(TODAY(),-1)+1	1/1/2024
Month End	=EOMONTH(TODAY(),0)	1/31/2024
Quarter Start	=EOMONTH(TODAY(),-3)+1	1/1/2024
Quarter End	=EOMONTH(TODAY(),3)	4/30/2024

Real-World EOMONTH Applications

Building Payment Schedules

Create a 12-month payment schedule:

1. Start date in A1 (e.g., 1/1/2024)
2. Formula for due dates: =EOMONTH(A1,SEQUENCE(12)-1)

Example payment schedule:

Month	Due Date Formula	Result
Jan	=EOMONTH(A1,0)	1/31/2024
Feb	=EOMONTH(A1,1)	2/29/2024
Mar	=EOMONTH(A1,2)	3/31/2024

Financial Reporting Deadlines

For reports due 5 days after month-end:

=EOMONTH(TODAY(),0)+5

For quarterly reports due 15 days after quarter-end:

=EOMONTH(TODAY(),3)+15

Next Steps

Now that you understand how to leverage the EOMONTH function, implement these formulas in your spreadsheets for automated date calculations. To take your spreadsheet automation to the next level and ensure your date-based reports always use the most current data, try Coefficient. Our add-on seamlessly syncs live data from your business systems directly into your spreadsheets.

Get started with Coefficient today and transform your static spreadsheets into dynamic, automated reports.