Quick answer: The USDA publishes an official monthly grocery cost for every age and household size at four levels. For a family of four (two adults 20-50 with children 6-8 and 9-11) the July 2026 Thrifty plan is about $1,025 a month, the Low-Cost plan about $1,128, the Moderate-Cost plan about $1,391, and the Liberal plan about $1,683. This calculator pulls the live figures for your household composition and compares them with what you actually spend.
Evergreen method
Build a budget from your own baseline
Use observed household spending and an explicit adjustment instead of treating a national average as a personal target.
Formula
monthly budget = weekly baseline × 52 ÷ 12Reproducible steps
- 1.Average at least four normal shopping weeks.
- 2.Separate groceries from restaurants and household supplies.
- 3.Apply one realistic adjustment, then review the result against actual receipts.
Data note — Evergreen model: The formula works with your own inputs and does not depend on a specific price or year.
FAQ
Questions, answered
How much should a family of 4 spend on groceries a month?
Using the USDA July 2026 Cost of Food report, a family of four (two adults aged 20-50 with children aged 6-8 and 9-11) needs about $1,025 a month on the Thrifty plan, roughly $1,128 on the Low-Cost plan, about $1,391 on the Moderate-Cost plan, and about $1,683 on the Liberal plan. The calculator above pulls the current figures for your exact household ages.
What is the difference between the USDA Thrifty, Low-Cost, Moderate, and Liberal food plans?
All four plans buy the same nutritious diet at four spending levels. Thrifty is the leanest and is the legal basis for maximum SNAP allotments; Low-Cost and Moderate-Cost allow more variety and some convenience foods; Liberal assumes the widest variety and most convenience while still cooking at home.
Does the USDA grocery budget change with household size?
Yes. The published costs are for four-person households, and the USDA applies an official adjustment for other sizes: add 20 percent for a one-person household, 10 percent for two, 5 percent for three, subtract 5 percent for five or six, and subtract 10 percent for seven or more. The calculator applies this automatically.
How often is the USDA food plan data updated?
The USDA publishes a new Cost of Food report every month. This tool reads the latest published report and shows the report month with the results, so the dollar figures are dated rather than a stale national average.
Do these grocery figures apply in Alaska and Hawaii?
No - the USDA publishes separate, higher costs for Anchorage and Hawaii. Select your region above and the tool shows the official reference-family figure for that area alongside the national numbers.
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How Much Should You Spend on Groceries a Month?
Read guideAverage Grocery Bill by Household Size (1 to 5 People)
Read guideGrocery Budget for a Family of 4
Read guide