First, track your spending and expenses for the next 30 days. You can begin by recording all your purchases on a weekly expense report worksheet that you fill out each day. Save your receipts from each purchase and then record a description of the purchase, the amount, its category, and how you made the purchase; whether by cash, check, or credit card.
When you start working with making a household budget it is extremely important to track your spending and all your expense both on a weekly and monthly basis. Many people dread tracking their expenses and recording every receipt but this is by far the best way to gain control over your spending. There is always a huge gap between what people think they spend and what they actually spend each month. So, tracking your spending is the only way to establish a working budget.