Bob's code ignores 4th,8th,12th columns....and sum up the values from columns
upto the matching column..

--
Jacob (MVP - Excel)


"fabio" wrote:

Thank you both Jacob and Bob. While I can follow the logic in Jacob's I'm
still struggling to follow how Bob's works - but it does which is what is
really important.

"Bob Phillips" wrote:

Try this

=SUMPRODUCT(--(MOD(COLUMN($A3:$P3),4)0),--(COLUMN($A3:$P3)=MATCH($A$1,$A$2:$P$2,0)),$A3:$P3 )

--

HTH

Bob

"fabio" wrote in message
...
Hi

From a previous post I was provided with a formula to provide a year to
date
total from a table based on the month I entered in A1.

=SUM(OFFSET($A3,,,1,MATCH($A$1,$A$2:$L$2,0)))

Jan Feb Mar Apr May ................................ Dec
1 1 1 1 1 1
.................................. 1
2
3

This has worked fine but I have now been presented with another table
which
has a sub total column which I need to take out when the MATCH includes
certain months.

Jan Feb Mar Jan-Mar Apr May June Apr-June July ...........
Total Total
1 1 1 3 1 1 1 3
1 ............

If I use the original formula when I enter Apr the sum includes Jan, Feb,
Mar and Jan-Mar. I need a formula which removes or ignores Jan-Mar for
Apr,
May and June and when I get to July will ignore/remove Jan-Mar ie July
entered in A1 should give me 7 not 13 which the original formula does.

I hope I have made this clear enough and appreciate any assistance.



.