EOMONTH function
Returns the serial number of the last day of the month before or after a specified number of months
Syntax
EOMONTH(start_date, months)Square brackets indicate optional arguments.
Arguments
| Argument | Required | Meaning |
|---|---|---|
| start_date | Yes | A date that represents the starting date."2011-1-1" |
| months | Yes | The number of months before or after start_date.1 |
Try EOMONTH
Shift a January date into the preceding year
=EOMONTH(A2,B2)Moving one calendar month back from January 2026 selects December 2025, whose last date is December 31. Subtracting a fixed number of calendar days would answer a different question.
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EOMONTH · top-level call
=EOMONTH(A2,B2)Follow the cells behind a result
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Reference and compatibility
Univer 1.0.4 / Apache-2.0. Calculation checks cover the supplied examples only. The browser worksheet does not implement every Excel feature, external service or connected data type.