Next Date

Assuming B2 will always be earlier than C2 try this formula in D2

=EDATE(B2,CEILING(DATEDIF(B2,A2,"m")+1,12/C2))

format as date

note:EDATE requires Analysis ToolPak add-in, to install use Tools > add-ins and tick "Analysis ToolPak" box

Thank you DaddyLongLegs... worked like a charm...