How Much Should You Budget for Groceries? Check out this grocery spending guideline to see how much you should be spending (and how much you could be saving) on groceries per month. Includes a chart to help you set your food spending based on family size, ages, and genders. Whether you're budgeting for one person or 11 people, this post will show you whether your budget is on track or if you could be saving more money on groceries.