FDA nutrition labels are the most-scrutinized piece of real estate on packaged food in the United States. Every panel of every product line goes through a layer of regulatory review — and most food entrepreneurs underestimate how exact the rules are. This guide walks through every requirement in 21 CFR 101.9 — what nutrients are mandatory, what formats are approved, what fonts are required, who\'s exempt, and what happens when labels go wrong.
Who Must Display a Nutrition Facts Label
Under section 403(q) of the Federal Food, Drug, and Cosmetic Act, virtually all packaged foods sold in interstate commerce must display a nutrition facts label that complies with 21 CFR 101.9. "Interstate commerce" is broadly interpreted — any product distributed across state lines, sold online to out-of-state customers, or sold through a retailer with multi-state distribution is covered.
Several categories are exempt from the nutrition labeling requirement (though they still need ingredient lists and allergen declarations):
- Raw single-ingredient produce and seafood — covered by the voluntary nutrition labeling program for raw fruits, vegetables, and fish.
- Food served for immediate consumption — restaurant meals, cafeteria offerings, hospital and school meals.
- Bulk foods at retail — products dispensed at point of sale (bulk bins, deli counters) where labels go on the package the customer receives.
- Small business exemption products — see below.
- Foods in very small packages — packages less than 12 square inches may use the linear format or, in some cases, only an address line.
- Custom-processed products — meat and poultry products butchered to customer specification.
The 13 Mandatory Nutrients (Post-2020 Rules)
Every FDA nutrition facts panel must declare values for these nutrients, in this order, under 21 CFR 101.9(c). Voluntary nutrients can be added below the mandatory list but cannot replace any required item.
| Nutrient | Unit | Daily Value (DV) |
|---|---|---|
| Total Fat | g | 78 g |
| Saturated Fat | g | 20 g |
| Trans Fat | g | No DV |
| Cholesterol | mg | 300 mg |
| Sodium | mg | 2,300 mg |
| Total Carbohydrate | g | 275 g |
| Dietary Fiber | g | 28 g |
| Total Sugars | g | No DV |
| Added Sugars | g | 50 g |
| Protein | g | 50 g |
| Vitamin D | mcg | 20 mcg |
| Calcium | mg | 1,300 mg |
| Iron | mg | 18 mg |
| Potassium | mg | 4,700 mg |
Calories must be declared at the top of the panel in bold, 22-point font. Servings per container and serving size are also required and must appear above the nutrient table.
Six FDA-Approved Label Formats
FDA permits six distinct label formats. The format you choose depends on your package geometry and serving structure. Our free generator handles all six.
- Standard Vertical — the default format for most packaged foods. Nutrient values stacked top to bottom.
- Dual Column — required for products with 2-3 servings that consumers could reasonably eat in one sitting (20-oz beverages, pint ice cream, snack multi-packs).
- Tabular (Horizontal) — alternative for packages with limited vertical space. Horizontal table layout.
- Linear — single-line format for very small packages under 12 sq inches (stick gum, candy, condiment packets).
- Aggregate — for variety packs and multi-item packages where each unit has different nutrition values.
- Bilingual (English/Spanish) — required in Puerto Rico, common for U.S. Hispanic-market products.
Font and Sizing Requirements
21 CFR 101.9(d)(1) specifies minimum font sizes and weights. Going below these triggers compliance issues. Key requirements:
- "Nutrition Facts" header: minimum 13-point font, bold, all caps not required but commonly used.
- "Calories": minimum 22-point font, bold. The calorie number itself must be at least 22-point as well.
- Nutrient names and values: minimum 8-point font (6-point permitted for linear and very small tabular layouts).
- Footnote ("The % Daily Value..."): minimum 6-point font.
- Horizontal lines (rules): the thicker line above "Calories" must be at least 0.005 inches; thinner separator lines must be at least 0.002 inches.
How Percent Daily Values Are Calculated
The % Daily Value column shows how much each nutrient in a serving contributes to a 2,000-calorie reference diet. The formula is simple: (nutrient amount per serving ÷ Daily Value) × 100, rounded to the nearest whole percent. For example, a product with 7 grams of saturated fat per serving shows "35% DV" because 7/20 × 100 = 35.
FDA rounding rules require declared amounts to be rounded according to specific thresholds:
- Calories: rounded to the nearest 5 below 50, nearest 10 above 50.
- Fat, carbohydrate, fiber, sugars, protein: rounded to the nearest 0.5 g below 5 g, nearest 1 g above.
- Sodium: nearest 5 mg below 140 mg, nearest 10 mg between 140-360 mg, nearest 10 mg above 360.
- Cholesterol: nearest 5 mg below 5 mg (declared as "0 mg" if less than 2 mg).
The Small Business Exemption
Companies that meet both criteria may apply for the small business exemption:
- Fewer than 100 full-time-equivalent employees.
- Fewer than 100,000 units of the specific product sold in the United States in the prior 12 months.
The exemption is requested via FDA Form 3570, filed annually. It only exempts the nutrition facts panel — ingredient lists, allergen declarations, country-of-origin labeling, and name/place-of-business identification remain required. Many retailers (especially national grocery chains) require nutrition labels even on exempt products, so the exemption is more useful for farmers market vendors and direct-to-consumer brands than for products targeting retail distribution.
Enforcement and Penalties
FDA enforcement of nutrition labeling is mostly corrective rather than punitive. The typical enforcement sequence:
- FDA inspection or consumer complaint identifies a labeling violation.
- Warning Letter issued, giving the manufacturer a specific window (typically 15-30 days) to respond with a corrective action plan.
- Re-inspection verifies that corrections have been implemented.
- Escalation for non-response: import detention at port (for foreign manufacturers), seizure, injunction, or civil penalties under 21 USC 333.
- Criminal referral reserved for willful violations or fraud.
State agencies — particularly California (CDPH), New York (NYSDAM), and Texas (DSHS) — actively supplement federal enforcement and often act on consumer complaints faster than the FDA. Class-action lawsuits over deceptive labeling (mislabeled "natural," undisclosed added sugars, misleading serving sizes) are also a meaningful enforcement vector that operates outside the FDA framework entirely.
What\'s Next After the 2020 Update?
The FDA is actively considering several additional labeling changes for 2027-2030, including front-of-package nutrition icons (the "Healthy" symbol proposed in 2022 was finalized in late 2024), updated definitions for "healthy" claims, and potential additions of allergen warnings for sesame and other emerging allergens. Manufacturers should expect at least one significant labeling change every 5-7 years and budget for label refreshes accordingly.
For tactical execution, our recipe-to-label calculation guide and free generator handle every detail covered in this article automatically — from nutrient ordering to font sizing to Daily Value math.