11 Insanely Simple Ways to Save Money on Groceries According to the U.S. Department of Agriculture, an American family of four spends an average of $1,071.40 a month on food at home. That’s a lot of money for groceries, no matter the size of your family. Good news: You can slash your grocery costs. These tips require effort, but when combined, they can add up to significant savings and make a big difference in your household finances. No. 1: Shake It Up, Baby! When buying produce such as spinach, lettuce, celery, or broccoli, shake off excess water before you weigh it. Water weight can add ...