Use this Monthly Budget Worksheet to jot down your monthly expenses and track your spending. You can use the existing categories or modify them to suit your household.
Simply fill in the yellow highlighted fields and the rest is calculated for you. As you track your spending each month, the 12 Month Budget Roll Up sheet will populate automatically so you can track your spending in each category month to month.
Monthly Budget Worksheet (Excel worksheet)
Also, J. Money over at Budgets Are Sexy has pulled together a really nice collection of free budget templates and budgeting sites.
Check them all out and see which one works best for you.