Try something like:

=A1-OFFSET(A1,0,ROW(2:2))

HTH

Jean-Guy

"Alistair" wrote:

Hi.

I am having difficulty whilst creating formulas.

My formula is of the form:

B1=A1-C1
B2=A2-D2
B3=A3-E3
......

I wish to fill the formula down a single column (ie, column B).

Whilst using the auto-fill option, the formula will not increment the column
reference in subsequent rows.

For example, the next row 4 in my worksheet will display:

B4=A4-C4

when in fact I wish this to be:

B4=A4-F4.

Can you please assist in helping me to solve this problem.

Many thanks.