This site does an actual budget for you using their guidelines. Put in your monthly income and it gives you the amounts using their suggested guidelines. It also gives a table of incomes and suggested amounts for the varying categories.
This site explains how to do a budget.
This site also explains how to do a budget.
Karle Jeacle's
Mortgage Calculator
Mortgage Calculator
Consumer Math Pages 12 - 13 Pages 196 - 200 Pages 285 - 288