Find Begining and end dates of the previous month

Hello,
I am looking for the formula to find the beginning and end of the previous month. If today is march 28 th then I would like to find february's beginning and end date using the system date.

When my crystal report runs it will find invoices, from the previous month.

Post_date between (beginning of February) and {End of February}.

Post_date is formated as MM/DD/YYYY HH:MM:SS am/pm on the db. I want to check against "MM/DD/YYYY"

Thank you,
Pn

To calculate the last day of previous month is :

Code:

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Day(DateSerial(Year(CurrentDate), Month(CurrentDate) , 0))

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The beginning of the month alway is 1

and use DateValue function, as :

Code:

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{Table.Field} >= DateValue(Year(CurrentDate), Month(CurrentDate)-1, 1) And
{Table.Field} <= DateValue(Year(CurrentDate), Month(CurrentDate)-1, Day(DateSerial(Year(CurrentDate), Month(CurrentDate) , 0))
)

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JG

Awesome. Thank you worked like a charm.

Just be careful when the month is January... need a condition there

JG