Certainly a Pivot Table is appropriate:

http://peltiertech.com/Excel/Pivots/pivotstart.htm

Or, if the groups stay sorted, you could use Data/Subtotals...

Or you could use =SUMIF(A:A,1,B:B)

In article ,
Sandy wrote:

I have a list of people who are in certain groups, each person pays so much
money and the list is added to daily. I want to know what the totals are for
different groups.

group amt
1 50
1 25
1 75 subtot for 1
2 10
2 20 subtotal for 2

Any help