I have a form with to fields "Begindate" and "Enddate". I would like to have these fields on form open generate the first and last days of the current month automatically.

Thank you, in advance!
Jerry

This will give you the first day of the current month:

=DateSerial(Year(Date()),Month(Date()),1)

and this the last day:

=DateSerial(Year(Date()),Month(Date())+1,0)