How Much Should You Be Spending on Groceries Per Month? (By Household Size)

How much groceries cost per month depends heavily on household size and how much variety and convenience factor into the shopping list. The USDA publishes four official spending tiers every month, from a bare-bones Thrifty plan up to a Liberal plan with more variety and convenience foods, and both are based on real, current food prices rather than estimates.

Here's what each tier actually costs by household size, as of the most recent USDA report.

How much are groceries per month?

Groceries cost between roughly $303 and $582 a month for a single adult, and between roughly $1,018 and $1,675 a month for a family of four, depending on which USDA spending tier applies. The USDA's four tiers, Thrifty, Low-Cost, Moderate, and Liberal, all represent a nutritionally complete diet with all meals cooked at home, so the main difference lies in variety and convenience.

How much does one person spend on groceries per month?

A single adult spends roughly $300 to $380 a month on the Thrifty plan, $330 to $380 on Low-Cost, $400 to $475 on Moderate, and $510 to $580 on Liberal, with the range reflecting gender-based differences in USDA's calorie assumptions. These figures already include USDA's standard 20% single-person household adjustment, since buying for one costs more per person than buying for a family.

How much do a couple or a family of four spend?

A couple spends roughly $626 to $1,004 a month depending on tier, and a family of four spends roughly $1,018 to $1,675 a month. Larger households benefit from a small economy-of-scale discount built into USDA's figures, which is part of why the per-person cost drops as household size increases.

Monthly grocery cost by household size

What actually changes how much you spend?

• Location: cost of living varies significantly by region, and Alaska and Hawaii carry separate, higher USDA benchmarks

• Diet: more meat, specialty ingredients, or organic products push spending toward the Moderate or Liberal tiers

• Eating out vs. cooking: USDA's figures assume all meals are prepared at home; any restaurant or delivery spending sits outside these numbers entirely

• Food waste: households that waste less of what they buy spend less for the same amount of food actually eaten

How can you spend below the average?

Aiming for the Thrifty or Low-Cost tier as a target, rather than the Moderate tier most households drift toward by default, is the most direct way to spend less. That means cooking from scratch, buying store brands, and planning meals around what's already in the kitchen. Tallycart shows you which tier your own spending actually lands in month to month, so "below average" becomes a number you can check instead of a guess.[See the full guide: How to Save Money on Groceries]