Previous month based on current month

[spectraflame]

I am using the following formula to return the current month.

=TEXT(TODAY(),"MMMM")

However I would like to return the previous month. I know that if it were the year, I can just add -1 to the end of the formula, but that returns #VALUE when tried with the MMMM format.

Thanks,
Matthew

 

[Scott Huish]

=IF(TEXT(Y2,"mmyyyy")=TEXT(TODAY(),"mmyyyy"),"Current Month",IF(TEXT(Y2,"mmyyyy")=TEXT(EDATE(TODAY(),-1),"mmyyyy"),"Previous Month",""))

 

[rfigueroa1976]

Worked like a charm! Thanks Scott!

 

[Rick Rothstein]

Worked like a charm! Thanks Scott!

I think this slightly shorter formula should also work...

=IFERROR(CHOOSE(1+DATEDIF(Y2-DAY(Y2),TODAY()-DAY(TODAY()),"m"),"Current Month","Previous Month"),"")

 

[Tetra201]

Rick,

Shouldn't it be

=IFERROR(CHOOSE(1+DATEDIF(Y2-DAY(Y2)+1,TODAY()-DAY(TODAY())+1,"m"),"Current Month","Previous Month"),"")

to work correctly? Otherwise it stumbles if "today" is December 2018, or March 2019, etc.

 

[Rick Rothstein]

Rick,

Shouldn't it be

=IFERROR(CHOOSE(1+DATEDIF(Y2-DAY(Y2)+1,TODAY()-DAY(TODAY())+1,"m"),"Current Month","Previous Month"),"")

to work correctly? Otherwise it stumbles if "today" is December 2018, or March 2019, etc.

In my mind's eye, it would seem to me that the formula should give the same result whether you include the +1 (making each date the first of their month) or omit it (making each date the last day of their previous month) since we are calculating the difference in months between them. Can you give me an example using specific dates where this is not the case?

 

[Tetra201]

Here is what I tested (TODAY() was replaced with $A$1):

=IFERROR(CHOOSE(1+DATEDIF(Y2-DAY(Y2),$A$1-DAY($A$1),"m"),"Current Month","Previous Month"),"")
=IFERROR(CHOOSE(1+DATEDIF(Y2-DAY(Y2)+1,$A$1-DAY($A$1)+1,"m"),"Current Month","Previous Month"),"")

A1: 3/1/2019
Y2: 1/1/2019
...
Y121: 4/30/2019

 

[Rick Rothstein]

Here is what I tested (TODAY() was replaced with $A$1):

=IFERROR(CHOOSE(1+DATEDIF(Y2-DAY(Y2),$A$1-DAY($A$1),"m"),"Current Month","Previous Month"),"")
=IFERROR(CHOOSE(1+DATEDIF(Y2-DAY(Y2)+1,$A$1-DAY($A$1)+1,"m"),"Current Month","Previous Month"),"")

A1: 3/1/2019
Y2: 1/1/2019
...
Y121: 4/30/2019

You are correct... the +1 is definitely needed. Apparently DATEDIF does not look at the month number when determining the number of months between two dates, rather, it seems to be looking at the number of days in the earlier date and seeing if the number of days to the later date is greater than that number of days. So, for example, the number of months between 1/31/2019 and 2/28/2019 is 0, not 1 (because 2/28/2019 is less than 31 days from the end of January).

 

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[TD="colspan: 5"]a lookup table might be worth considering………..[/TD]
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[rfigueroa1976]

Thank you all for your help!!!

 

[Qazi Sharifullah]

another alternative...

=text(today()-day(today()),"mmmm")

thanks
i need this one and working properly. Thanks