Food Packaging Label Requirements in the US: What Must Be on Every Package

The FDA regulates food labelling under 21 CFR Part 101. Every packaged food product sold in the United States must comply with these requirements before it goes to market — and the list is longer than most food entrepreneurs expect when they're first launching.

This guide explains what's mandatory, where it goes, and how to integrate compliance into your packaging design without sacrificing the visual hierarchy that makes food products sell.

The Mandatory Elements: What Every Food Label Needs

1. Statement of Identity (Product Name)

The front panel of your packaging — the "principal display panel" or PDP — must include a statement that accurately identifies the product. This is not optional and cannot be vague: "Granola with Dark Chocolate and Sea Salt" is correct; "Artisan Blend" is not, because it doesn't identify what the product actually is.

The statement of identity must be prominent and in plain language. If the product has a standard of identity established by FDA regulation (as many conventional foods do — "yogurt," "mayonnaise," "cheddar cheese"), the name must conform to that standard or be distinguished from it (e.g., "yogurt-style product").

2. Net Weight or Net Quantity of Contents

The net quantity of contents must appear on the bottom 30% of the principal display panel. It must be expressed in:

• Imperial units (ounces, pounds, fluid ounces) for US consumers
• Metric units (grams, kilograms, millilitres) — mandatory as of current regulations for dual labelling

The type size is regulated: the net quantity must be in type that's at least 1/16 inch in height on packages with a PDP area under 5 square inches, scaling up proportionally for larger packages (detailed in 21 CFR 101.105).

Do not hide this. It must be on the principal display panel — not the back, not the side.

3. Name and Place of Business

The manufacturer, packer, or distributor must be identified by name and full address (street address, city, state, ZIP code) or by name and city/state/ZIP code if the street address is listed in a current city directory or telephone directory.

If the name and address appearing on the label is not that of the manufacturer, the label must clarify the relationship: "Manufactured for [Company]" or "Distributed by [Company]" or "Packed by [Company]."

4. Ingredient List

All ingredients must be listed in descending order by weight — the ingredient present in the greatest amount by weight is listed first. This is one of the most frequently violated labelling requirements, because brands often want to list their "hero" ingredient first for marketing reasons. That's not permitted.

Specific naming requirements apply: ingredients must be identified by their common or usual name. Water is "water," not "aqua" (that's cosmetics). Sugars must be identified by specific name where relevant (evaporated cane juice was a notable enforcement issue — it must be declared as "sugar" or its specific form).

Sub-ingredients (the ingredients within a compound ingredient like chocolate or bread) must be declared in parentheses following the compound ingredient name: "Dark Chocolate (Cocoa Liquor, Sugar, Cocoa Butter, Vanilla)."

5. Allergen Declarations

The Food Allergen Labeling and Consumer Protection Act (FALCPA) requires that the eight major food allergens be declared clearly on food labels. As of January 1, 2023 (under the FASTER Act), sesame was added as the ninth major allergen:

1. Milk
2. Eggs
3. Fish (with species name, e.g., "salmon, tilapia")
4. Crustacean shellfish (with species name, e.g., "crab, shrimp, lobster")
5. Tree nuts (with specific nut name, e.g., "almonds, cashews, walnuts")
6. Peanuts
7. Wheat
8. Soybeans
9. Sesame (from January 1, 2023)

Allergens can be declared in two ways:

• Within the ingredient list: "Contains: milk, soy, sesame" statement following the list
• Parenthetical identification: by naming the allergen in parentheses after the ingredient — "casein (milk)"

The "Contains" statement, if used, must be complete — you cannot list some allergens in the ingredient list and others in the "Contains" statement.

Cross-contact advisory statements — "May contain traces of peanuts" or "Manufactured in a facility that also processes tree nuts" — are voluntary and advisory, not FDA-mandated. If you use them, they must be truthful and not be used as a substitute for proper allergen control in manufacturing.

6. Nutrition Facts Panel

The Nutrition Facts panel is one of the most regulated elements in US food labelling. The format, type sizes, and mandatory nutrients were updated in the 2016 FDA labelling rules (compliance deadline extended to 2020/2021 for most manufacturers).

Mandatory nutrients on the current Nutrition Facts panel:

• Serving size (in household measures AND grams/ml)
• Servings per container
• Calories — now displayed in larger type
• Total Fat, Saturated Fat, Trans Fat
• Cholesterol
• Sodium
• Total Carbohydrate, Dietary Fiber, Total Sugars
• Added Sugars — new as of 2016 rules, required
• Protein
• Vitamin D — now mandatory (replaced Vitamins A and C which are voluntary)
• Calcium
• Iron
• Potassium

Key changes in the 2016 format:

• "Added Sugars" with a % Daily Value — new mandatory element
• Calories displayed in larger, bolder type
• Serving sizes updated to reflect amounts typically consumed (not aspirational serving sizes)
• Vitamin D and Potassium mandatory; Vitamins A and C now voluntary
• "Calories from Fat" removed

If your label still shows the old Nutrition Facts format, it is non-compliant with current law.

Type size requirements: The FDA specifies exact minimum type sizes for each element of the panel. "Nutrition Facts" header uses a specific heavier weight. Calories must be displayed prominently. The panel must be enclosed in a box. These specifications are in 21 CFR 101.9(d).

7. Country of Origin (COOL)

Country of origin labelling (COOL) under USDA requirements applies primarily to raw agricultural commodities (beef, lamb, pork, chicken, fish, fresh and frozen produce, peanuts, pecans, macadamia nuts, ginseng). Processed foods — defined as a food that has undergone a physical or chemical change — are generally exempt.

For most packaged food brands (snack foods, sauces, condiments, baked goods), country of origin is not federally mandated. However, some retailers require it, some consumers expect it, and some product categories have specific rules. Verify for your specific category.

8. Date Markings

"Best By," "Use By," and "Sell By" dates are not federally mandated for most packaged foods (infant formula is the notable exception, where a "Use By" date is required). The meaning of these terms varies and there is ongoing FDA guidance toward standardising them.

However: most retailers require date markings as a condition of listing. Consumers expect them. And many food safety plans at the manufacturing level require traceable date codes. In practice, date markings are standard on virtually all packaged food products regardless of whether they are federally required.

Nutrient Content Claims: What You Can Say About Your Product's Nutrients

The FDA has specific definitions for nutrient content claims — marketing language that implies the food contains more or less of a nutrient than typical.

Common permitted claims and their requirements:

Using these terms without meeting the FDA's definitions is a labelling violation. "Natural" and "organic" have their own specific rules and oversight bodies (USDA for organic).

Health Claims vs Structure/Function Claims

Health claims link a food or food component to reducing the risk of a disease. They require FDA authorisation and meet a specific evidence threshold. Only a limited number of health claims are permitted, and they must use the exact FDA-approved language or a shortened form.

Example of a permitted health claim: "Diets containing foods that are a good source of potassium and that are low in sodium may reduce the risk of high blood pressure and stroke."

Qualified health claims have lower evidence thresholds and must be accompanied by a qualifier such as "Some scientific evidence suggests... although FDA has determined that the evidence is limited and not conclusive."

Structure/function claims describe the role of a nutrient or food component in normal bodily function. These do not require FDA pre-approval for food products (unlike for dietary supplements). They must be truthful and not imply disease prevention.

• "Calcium builds strong bones" ✅
• "Antioxidants support healthy cell function" ✅
• "Fiber supports digestive health" ✅
• "Prevents osteoporosis" ❌ (disease claim requiring health claim authorisation)

Front-of-Pack Claims: What's Trending and What's Regulated

"Natural" — FDA has not formally defined "natural" for food, but has historically allowed it when the food doesn't contain artificial flavours, artificial colours, or synthetic substances. The term is in active regulatory discussion and is not a safe haven for any ingredient combination.

"Clean label" — Not an FDA-defined term. Means different things to different audiences. The FTC's guidelines on deceptive advertising would apply if "clean label" is used in a way that misleads consumers.

"Non-GMO" — Voluntary. If the product is USDA certified organic, it is by definition non-GMO. The Non-GMO Project seal requires third-party verification. "Non-GMO" statements without verification are allowed but expose the brand to FTC scrutiny if not substantiated.

"Gluten-free" — FDA-defined. A product labelled "gluten-free" must contain less than 20 parts per million (ppm) of gluten. If your product is produced in a shared facility that processes gluten, you must be able to substantiate this claim through testing and manufacturing controls.

Label Placement Rules

Not all required information can go anywhere on the package. FDA regulations specify which elements must appear on the principal display panel and which can appear on the information panel (the right-facing panel adjacent to the PDP when the PDP faces forward):

Must appear on the PDP:

• Statement of identity (product name)
• Net quantity of contents

Can appear on the PDP or information panel (but must be adjacent and conspicuous):

• Name and address of manufacturer/distributor
• Ingredient list
• Nutrition Facts panel
• Allergen declarations

In practice, most packaging places the Nutrition Facts panel, ingredient list, allergen declarations, and manufacturer address on the back panel. The front panel carries only the statement of identity and net quantity.

Where Design and Compliance Most Often Conflict

Hierarchy that buries the statement of identity — Brands sometimes lead with a lifestyle descriptor or brand story headline that takes visual precedence over the product name. The statement of identity must be prominent and conspicuous on the PDP.

Net quantity in the wrong location — Net quantity must be in the bottom 30% of the PDP. This is frequently violated when designers treat net weight as a design element and place it at the top or centre of the package.

Nutrition Facts panels that are illegible — The minimum type sizes specified in 21 CFR 101.9(d) exist. Many labels also barely meet those minimums in a way that makes the panel essentially unreadable in practice. This doesn't cause an immediate regulatory issue, but it's bad for consumer trust.

Allergen declarations missing from ingredient sub-ingredients — If your product contains chocolate, and the chocolate contains milk and soy, those allergens must appear in the ingredient list declaration even if they're sub-ingredients. This is frequently missed.

Claims without substantiation — Front-of-pack claims need to meet FDA definitions if they reference specific quantities ("high in fibre") or be truthful and not misleading if they're general marketing statements. Review every claim on pack against FDA definitions before finalising artwork.

EU Food Labelling: The Key Differences

If you're exporting food products to the EU or UK, the requirements differ significantly from FDA rules. Key differences include:

• Country of origin is mandatory in the EU for many more product types than in the US
• "Best before" vs "Use by" dates — distinct meanings with specific formatting requirements
• Nutritional declaration format is different from US Nutrition Facts (energy, fat, saturates, carbohydrate, sugars, protein, salt — in that order, per 100g rather than per serving)
• Allergen declaration must be highlighted within the ingredient list (bold, italic, underlined, or contrasting colour) rather than in a separate "Contains" statement
• Net quantity in metric only
• Font size — minimum 1.2mm x-height for most elements
• EU organic certification and logo requirements differ from USDA Organic

Multi-market labelling (selling the same product in the US and EU with a single label) is complex. Most brands opt for separate market-specific labels rather than trying to comply with both regulatory regimes on a single panel.

Practical Checklist Before Your Packaging Goes to Print

Principal Display Panel:

• Statement of identity clearly identifies the product
• Net quantity in the bottom 30% of PDP, in both imperial and metric
• No claims on the PDP that don't meet FDA definitions

Information Panel:

• Ingredient list in descending order by weight
• All sub-ingredients of compound ingredients declared
• All nine major allergens declared (milk, eggs, fish, shellfish, tree nuts, peanuts, wheat, soy, sesame)
• "Contains: [allergens]" statement, or allergens identified in ingredient list
• Nutrition Facts panel in current 2016 format (includes Added Sugars, updated vitamins)
• Manufacturer/distributor name and full address
• Net quantity (can be on information panel if also on PDP)

Claims:

• All nutrient content claims meet FDA definitions
• No unapproved health claims
• Any structure/function claims are truthful and not implying disease treatment

FAQ

Does my Nutrition Facts panel need to match the current FDA format? Yes. The FDA updated the Nutrition Facts panel in 2016 with compliance deadlines that have now passed for all manufacturers. Labels using the pre-2016 format — which did not require "Added Sugars" and showed different vitamins — are technically non-compliant. If your product launched before 2021 and hasn't been relabelled, this is worth auditing.

Do I need a barcode on my food packaging? A barcode (UPC or EAN) is not required by FDA labelling law. However, it is a requirement of virtually every retail chain, grocery store, and online marketplace. If you're selling anywhere other than direct-to-consumer through your own website, you need a barcode. UPC barcodes are assigned through GS1 — do not use barcodes from third-party resellers, as these are not legitimately assigned and will cause retail issues.

What type size is required for the Nutrition Facts panel? The FDA specifies minimum type sizes throughout 21 CFR 101.9(d). As a practical guide: the "Nutrition Facts" header must be set prominently; "Calories" must be in larger, bolder type; most other text has a minimum of 6 points. Consult the FDA's industry guidance for the exact specifications by panel type.

Can I put "No artificial ingredients" on my packaging? If the claim is true (the product contains no artificial flavours, artificial colours, or synthetic preservatives), this claim is generally permitted as a factual marketing statement. Verify against your full ingredient list including sub-ingredients; artificial ingredients in compound ingredients count.