In D2:

=SUMPRODUCT(B2:B500*(TEXT(A2:A500,"mmm")=C2))

HTH
Kostis Vezerides

On Jul 25, 11:50 am, Amul wrote:
I have values from a2:a500 which contains various dates(not sorted) and
amount in b2:b500.

I would like to sum, where month(a2:a500) represents my values in
c2:c13(Jan,Feb ... Dec)

Please advice ...

TIV.