Check with your local extension office to see if they have something local/state.
If they don't try this link and then near the bottom of the page there is a section called "Stocker Cattle Publications" and in that section the second item is an Excel worksheet called "Stocker Cattle Budget"
http://msucares.com/livestock/beef/stocker.html
Hope that helps....
Cheers...
TTB :wink:
FYI...I found this by typing in Google stocker cattle budgets in case you are looking for something different