Food Labeling Requirements in the US: What Labels Must Tell You

A food label isn't decoration — it's a legal document printed at roughly 8-point type. Federal law dictates what must appear on nearly every packaged food sold in the United States, from the net weight to the order in which ingredients are listed. This page covers the mandatory elements that manufacturers must include, how the rules vary by product type, and where the lines fall between required disclosure and optional marketing claim.

Definition and scope

The foundation of US food labeling law sits in two statutes: the Federal Food, Drug, and Cosmetic Act (FD&C Act) and the Fair Packaging and Labeling Act (FPLA). Under these laws, the FDA regulates labeling for most packaged foods, while the USDA's Food Safety and Inspection Service (FSIS) governs labeling for meat, poultry, and egg products. The split matters: a can of tuna answers to FDA; a pack of chicken breasts answers to FSIS. Both agencies share jurisdiction over some egg products, which is exactly as tidy as it sounds.

The scope of mandatory labeling covers any food that is packaged before sale and offered for retail purchase. Bulk bins, restaurant meals, and food sold by weight at a deli counter operate under different — and generally lighter — rules. This page addresses packaged retail food, the category most consumers encounter.

How it works

Federal regulations at 21 CFR Part 101 specify five principal display panels and what must appear on each. The mandatory elements on every standard packaged food label are:

Statement of identity — the common or usual name of the food (e.g., "tomato paste," not "garden treasure").
Net quantity of contents — the amount by weight, measure, or count, expressed in both US customary and metric units.
Ingredient list — all ingredients listed in descending order by weight, as required by 21 CFR §101.4.
Name and place of business — the manufacturer, packer, or distributor and their address.
Nutrition Facts panel — mandated under regulations updated by FDA in 2016, with full compliance required for large manufacturers by January 1, 2020 (FDA Nutrition Facts Label).

The Nutrition Facts panel is its own architecture. It must list serving size, calories, total fat, saturated fat, trans fat, cholesterol, sodium, total carbohydrate, dietary fiber, total sugars, added sugars, protein, and 4 micronutrients: vitamin D, calcium, iron, and potassium. The 2016 update added "added sugars" as a distinct line and dropped vitamins A and C (which had become less of a public health concern) in favor of vitamin D and potassium.

Allergen disclosure is governed separately by the Food Allergen Labeling and Consumer Protection Act of 2004 (FALCPA) and expanded by the FASTER Act of 2021 (FDA Major Food Allergens). The 9 major allergens that must be clearly declared are: milk, eggs, fish, shellfish, tree nuts, peanuts, wheat, soybeans, and sesame (sesame was added under the FASTER Act, with compliance required by January 1, 2023).

Understanding allergen labeling connects directly to the broader topic of food allergy vs. food safety, where the distinction between an immune response and a contamination risk becomes operationally significant.

Common scenarios

Organic claims: The USDA National Organic Program (NOP) controls use of the word "organic." A product labeled "100% Organic" must contain only organically produced ingredients. "Organic" requires at least 95% organic content. "Made with Organic [ingredient]" requires at least 70%. Labels with less than 70% organic content cannot use "organic" on the principal display panel. Details are maintained by the USDA Agricultural Marketing Service. For a fuller picture of how these claims connect to safety standards, see organic food safety standards.

"Natural" claims: Unlike "organic," the term "natural" has no formal FDA definition for most foods. FDA has historically exercised enforcement discretion and has not established a binding rule, which means the label "all natural" carries legal weight only in the limited sense that it cannot be technically false. FSIS does define "natural" for meat and poultry: the product cannot contain artificial ingredients or added color, and must be only minimally processed.

"Best by" vs. "use by" vs. "sell by": With the exception of infant formula, date labels on food are not federally standardized. Manufacturers set their own dates, and they refer to quality — not safety. FDA and USDA jointly recommend the industry adopt "Best If Used By" as the standard phrase to reduce food waste. The relationship between date labels and actual food safety is explained in detail at food expiration dates explained.

Decision boundaries

The regulatory line between a required label element and a voluntary claim follows a consistent logic: mandatory elements protect consumers from deception or health harm; voluntary claims are permitted only if they are truthful and not misleading.

Where the boundary gets contested is in health claims and nutrient content claims. FDA defines three categories:

Authorized health claims — backed by significant scientific agreement (e.g., calcium and osteoporosis), pre-approved by FDA.
Qualified health claims — supported by emerging but not conclusive evidence, permitted with mandatory qualifying language like "evidence is limited."
Nutrient content claims — descriptors like "low sodium" or "high fiber," each with a specific regulatory threshold under 21 CFR Part 101 Subpart D.

A claim that crosses from truthful description into implied disease prevention without FDA authorization is a misbranding violation under the FD&C Act. The full landscape of food safety law and the agencies enforcing it is covered at food safety laws and regulations US, and the broader home food safety reference situates labeling within the wider context of what consumers encounter from store shelf to table.

References

📜 5 regulatory citations referenced · 🔍 Monitored by ANA Regulatory Watch · View update log