Excel should be able to handle it:

http://peltiertech.com/Excel/Charts/Waterfall.html

- Jon
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Jon Peltier, Microsoft Excel MVP
Peltier Technical Services
Tutorials and Custom Solutions
http://PeltierTech.com/
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Strategist wrote:

I am looking for software tools and/or techniques for creating cascading and
waterfall charts . I'm guessing that regular Excel does not do this. What's
the best answer?