Really good online free budget planner from the moneysavingexpert
HOW TO USE THE BUDGET PLANNER
This is very simple to operate, work through each category, moving from item to item either with your mouse, or by using the computers Tab key. Enter only numbers e.g. 1,2,3,4 not letters. To enter pounds and pence simply use the decimal place e.g. 275.75.
Put your expenditure in PART A either in the weekly, monthly or annual columns (you can do it in a combination too), whichever is more appropriate. This will then automatically calculate it for you and give you the effective monthly expenditure in PART B.http://www.moneysavingexpert.com/budgetcalculator.phtml