For example,
=SUMIF($C$1:$C$2000, "Reimbursable Travel", $G$1:$G$2000)

or

=SUMIF($C$1:$C$2000, H1, $G$1:$G$2000)
if column H has a category list.

- David

Colin wrote:
I have data in the range A1:K2000. In column C I have descriptions for
different types of business expense. In column G I have the amounts of these
expenses.
I want a formula that searches column C for a specific business expense and
when finding it, adds up all the related values in column G.

How do I do this?