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By the end of this lesson you can tell whether you even owe a Nutrition Facts
panel, set your serving size the way the regulation makes you, round each
nutrient to its own increment, and keep the source data that lets you stand
behind every number. The trap that catches careful people here is subtle: a
number that came straight off an accurate lab report can still
your label if you round it wrong. This
lesson works the panel in build order — do I owe one, what's the serving, what
are the numbers, how do I round them — so you finish with a panel that holds up.
First, do you even owe a panel?
Most packaged foods carry a Nutrition Facts panel under
21 CFR 101.9,
and the anatomy of a compliant label
lesson already put it on the label as one of the five elements. But there are
two real exemptions, and they're worth checking before you pay for a single lab
test.
The first is for low-volume direct sellers. If you make direct sales to
consumers — a farmers-market stand, your own shop — and your business does no
more than $500,000 in total annual sales, or no more than $50,000 of that in food
sales to consumers, you can skip the panel, as long as your label carries no
nutrition claims at all (21 CFR 101.9(j)(1)).
The second is the small-business exemption, and it turns on headcount and
volume, not dollars. For any 12-month period you qualify if, over the preceding
12 months, you employed fewer than an average of 100 full-time-equivalent
employees and sold fewer than 100,000 units of that particular product in the
United States. To use it you file a notice with FDA before the period begins.
There's a smaller tier inside it: if you're not an importer, employ fewer than 10
full-time-equivalent employees, and sell fewer than 10,000 units of the product a
year, you don't have to file the notice at all (21 CFR 101.9(j)(18)).
A single claim voids the exemption
Every one of these exemptions disappears the moment your label makes a
nutrition claim. "Low sodium," "good source of fiber," even "0 g trans fat" on
the front of the package is a nutrient-content claim — and making one pulls you
straight back into needing a full, correct panel, plus the rules that govern
the claim itself. Decide the claims question before you decide the panel
question.
These numbers move you back in as you grow, so don't treat a one-time check as
permanent. Confirm your own eligibility against 21 CFR 101.9(j) and FDA's
Small Business Nutrition Labeling Exemption
page (verified July 2026), and re-check it each year. One more scope note: this
is the FDA panel for FDA-regulated packaged food. Meat, poultry, and processed
egg products are nutrition-labeled under USDA/FSIS rules instead. If you owe a
panel, the rest of this lesson is how to get it right.
The serving size isn't your choice
The most common mistake is treating the serving size as a marketing lever —
shrinking it so the calories and sugar look smaller. You can't. The serving size
is set by regulation.
It comes from the
(RACC) that FDA publishes for your food's category in
21 CFR 101.12.
You take the reference amount for your category, convert it to a household
measure a shopper understands (a cup, two tablespoons, three cookies), and that's
your serving. Your opinion doesn't enter into it.
Two consequences trip up first-timers:
Small single packages are one serving. A product that's packaged and sold
individually and holds less than 200 percent of its reference amount is a
single-serving container — the whole package is one serving (21 CFR 101.9(b)(6)).
So the single-serve bottle you'd like to call "2.5 servings" is one serving, and
every number on the panel is for the whole bottle.
Some packages need two columns. If an individually sold package holds
between 200 and 300 percent of the reference amount and could reasonably be
eaten in one sitting, the panel has to show two columns — per serving and per
container.
This matters because every value on the panel is per serving. Set the serving
wrong and every number below it is wrong too, no matter how carefully you round.
Rounding is nutrient-specific
Here's the part that misbrands technically-correct labels. Your lab report might
say a serving has 8.2 grams of fat and 137 milligrams of sodium. Neither of those
numbers goes on the panel as written. FDA sets a rounding increment for each
nutrient, and printing the raw figure — or rounding it to the wrong increment —
misbrands the label even though the underlying data was perfect.
is spelled out in
21 CFR 101.9(c). The increments that catch people most:
Nutrient
Round to
Declared as 0 (or "less than")
Calories
nearest 5 up to and including 50, then nearest 10
under 5 calories may be 0
Total fat, saturated fat, trans fat
nearest 0.5 g below 5 g, then nearest 1 g
under 0.5 g is 0
Cholesterol
nearest 5 mg
under 2 mg may be 0; 2–5 mg may say "less than 5 mg"
Sodium
nearest 5 mg from 5–140 mg, then nearest 10 mg
under 5 mg is 0
Total carbohydrate, dietary fiber, sugars, protein
nearest 1 g
under 1 g may say "less than 1 g"; under 0.5 g is 0
Worked through: 52 calories rounds to 50, but 78 rounds to 80. That 8.2 grams of
fat rounds to 8 grams; 3.3 grams rounds to 3.5; 0.4 grams is declared as 0. The
137 milligrams of sodium rounds to 135, while 143 milligrams rounds to 140.
Each printed figure is the legally correct one — and each differs from the lab
number you started with.
Declaring 0 is not the same as claiming 0
Rounding a tiny amount down to 0 on the panel is allowed. Putting "0 g" or
"calorie-free" on the front of the package is a different act — that's a
nutrient-content claim with its own definition to meet, and, as above, it can
cost you an exemption. The panel value and the marketing claim follow separate
rules; don't let a rounded-down 0 talk you into a front-of-pack claim.
Added sugars follow the gram rules, and you can skip declaring them only when a
serving has less than 1 gram and you make no sweetener claims. The panel's four
required vitamins and minerals — vitamin D, calcium, iron, and potassium — are
declared as both an absolute amount and a percent Daily Value, and they carry
their own rounding in the same section. When you're unsure of an increment, read
it off 101.9(c) rather than assuming it matches the nutrient next to it.
Where the numbers come from — and where they have to survive
You get your nutrient values one of two ways: send finished product to a lab, or
calculate them from a nutrient database or nutrition-analysis software built on
reference data like USDA's FoodData Central. Both are legitimate — FDA even
recognizes an approved database, computed by its guidelines, as an alternative to
laboratory analysis (21 CFR 101.9(g)(8)). Calculation is cheaper and faster;
lab analysis is more defensible for a complex or highly processed product. Pick
per product, not by habit.
Whichever you choose, the number has to survive a test you don't control. FDA
checks a panel by analyzing a — 12
subsamples from a lot, run by standard methods (21 CFR 101.9(g)). The tolerances
run in two directions:
"Eat more" nutrients — vitamins, minerals, protein, fiber. An added
(Class I) nutrient has to test at least at its label value; a naturally
occurring (Class II) one at least at 80 percent of it.
"Eat less" nutrients — calories, fat, saturated and trans fat, cholesterol,
sodium, and sugars. These misbrand the label if the sample runs more than 20
percent over what you declared. In other words, understating the number FDA
cares about is exactly what gets caught.
So the real deliverable isn't the panel — it's the file behind it. Keep the
recipe, the database calculation or the lab report, and your serving-size math
together, dated. That file is what turns "the label says 8 grams" into a number
you can defend when someone asks how you got it.
Build it, then check it live
Work the panel in order: confirm whether you owe one, set the serving size from
the reference amount, get your numbers, round each nutrient to its own increment,
and file the source data behind it. Do those five and the panel is both correct
and defensible.
Keep one habit for good — these rules and the reference amounts change, so check
21 CFR 101.9
live before you finalize a panel rather than copying one off a competitor's box.
With the numbers right, the next thing the label has to get exactly right is the
allergen declaration — the nine major allergens, sesame now among them — which is
the next lesson in this course. And any marketing claim you're tempted to add,
the kind that can void the exemption you just checked, is its own set of rules,
covered in the claims lesson that follows.