How running totals work

A running total field is created with the Running Total Expert. The Running Total Expert creates a running total field by asking you to select a field to summarize, the summary operation to use, a condition upon which to base the evaluation, and a condition upon which to reset the evaluation.

Note:    A running total field can be used on database fields and first-pass formulas, but cannot be used on second-pass formulas or formulas that reference other second-pass formulas. For more information See Multi-pass reporting flow chart.