From Financial Consumer Agency of Canada
To figure out what you actually spend, you need to keep track of two types of expenses:
What's "fixed" and what's "variable" may change. For example, child care may be a regular monthly expense or it may be an occasional expense. Most people have more control over their variable expenses than their fixed expenses.
You also need to include irregular expenses: expenses that don't come up regularly or often, like car repairs or new appliances. To estimate irregular expenses, review your bills or expense records for the previous year, total the cost of irregular expenses in various categories, and divide by 12 to arrive at an average monthly cost.
To figure out what you actually spend, use this worksheet to enter your monthly expenses. You’ll get more accurate figures if you’ve been tracking your expenses for a few months.
Download the interactive PDF and add it to your Financial Toolkit [PDF - 213KB]
Now that you've got a good picture of your monthly expenses, do the following:
For an online Expenses worksheet, see the Budget Planner from the Financial Consumer Agency of Canada. You can use the calculator to create a household budget by the end of this module.