I would like to create a spreadsheet to generate graphs about cost items (anything with a cost, doesn't matter what) in order to have:

**expected values**: these would be created using some formulas to simulate future costs.**actual values**: these would be put in manually based on actual costs after billing.

At the end of a given time period (weekly, monthly...) the user would "freeze" the `expected value`

that was calculated earlier, and add the corresponding `actual value`

(and these should never be changed again).

The process would repeat itself for the next time periods while re-using either the same or new calculations for the expected values.

Over time, graphs will show the evolution of and different between the `expected`

and `actual`

values so as to allow for improvements (are the input values for calculations too optimistic / pessimistic?, were any cost items forgotten or not properly defined?...).

**Can someone point me to a template from which I could create such a spreadsheet?**

realfinancial software first. – allquixotic Nov 28 '12 at 16:53