Last verified 16 Sep 2026 · Sources
If your ingredient list isn’t in descending order by weight, it’s non-compliant. That’s the whole rule in one sentence, but the details matter more than the headline. 21 CFR 101.4(a)(1) requires every ingredient to appear in the order of how much it weighs in the finished food, heaviest first. Ingredients at 2% or less of the total (or a lower cutoff you choose, like 1% or 0.5%) can be grouped at the end under “Contains 2 percent or less of ___.” Sub-ingredients, like the seasoning in a spice blend, get named in parentheses or folded into the main list, and a few common categories (spices, flavors, colors, and incidental processing aids) get their own shorthand.
| Quick facts | Ingredient statement (descending order) |
|---|---|
| Regulation | 21 CFR 101.4, 101.22, 101.100(a)(3), 101.2 |
| Applies to | Any packaged food's ingredient list under FDA jurisdiction |
| Key numbers | 2% threshold for grouping; 1/16 inch minimum type size; descending order by weight |
The rule
21 CFR 101.4(a)(1) states that ingredients “shall be listed by common or usual name in descending order of predominance by weight.” That’s a weight test, not a volume test and not a cost test: the ingredient that weighs the most in the finished product goes first, even if it’s water or a bulk filler.
For the tail end of the list, 101.4(a)(2) allows ingredients that individually make up 2% or less of the food to be grouped together, introduced by “Contains __ percent or less of __” or “Less than __ percent of ____,” with the threshold set at 2%, 1.5%, 1%, or 0.5%, whichever applies. This is the mechanism that lets you list “salt, citric acid, spice” out of strict weight order at the bottom, without pretending those trace ingredients weigh more than they do.
Multi-ingredient components, such as a seasoning blend bought from a supplier or a pre-made sauce base, are handled under 101.4(b)(2): you can either give the component’s common name followed by its sub-ingredients in parentheses in descending order, or skip the parenthetical and incorporate every sub-ingredient directly into the finished product’s single ingredient list. Water added to reconstitute a concentrated ingredient is accounted for at the concentrate’s unreconstituted weight plus the water needed to bring it back to single strength, under 101.4(c); water beyond that gets its own separate “water” listing.
101.22 supplies the collective terms: “spice,” “natural flavor,” or “artificial flavor” can stand in for naming each individual spice or flavoring substance (101.22(h)(1)), and uncertified colors can be declared as “Artificial Color,” “Artificial Color Added,” or “Color Added” (101.22(k)(2)). Separately, 101.100(a)(3) exempts incidental additives (processing aids present at insignificant levels with no functional effect in the finished food, such as a release agent used during manufacturing) from having to appear on the list at all.
Placement is governed by 101.2: the ingredient statement goes on the same label panel as the name and address of the manufacturer or distributor, or, if there’s no room, on the information panel immediately to the right of the principal display panel. Per 101.2(c), the type must be at least 1/16 inch tall in most cases.
The numbers
- 2%, 1.5%, 1%, or 0.5%: the grouping threshold you can use for “Contains ___ percent or less of” (21 CFR 101.4(a)(2)).
- 1/16 inch: minimum letter height for the ingredient statement (21 CFR 101.2(c)).
- Descending order by weight: no numeric threshold, just a ranking rule (21 CFR 101.4(a)(1)).
On the label
Take a granola product with rolled oats, honey, chocolate chips, a proprietary spice blend, and salt. Rolled oats and honey are the heaviest ingredients, so they lead the list. The chocolate chips are themselves made of sugar, cocoa butter, and soy lecithin. You can write “chocolate chips (sugar, cocoa butter, soy lecithin)” or fold those three names straight into the main list in their own weight order. The spice blend, cinnamon and nutmeg at a fraction of a percent, gets named collectively as “spice,” and the salt, also under 2% of total weight, drops into “Contains 2 percent or less of spice, salt” at the end, instead of being forced into strict descending order with ingredients it doesn’t actually outweigh.
A wrong version of this label would list “spice, salt, chocolate chips” ahead of “rolled oats” because the list was sorted alphabetically instead of by weight, or would list the chocolate chip sub-ingredients without any parenthetical or main-list placement at all, leaving soy lecithin (a soy allergen source) invisible to a reader scanning the panel.
Mistakes we see
- Alphabetizing instead of weighing. The ingredient list isn’t alphabetical; it’s a weight ranking, and getting this backwards is one of the most common errors on self-designed labels.
- Forgetting sub-ingredients. A purchased seasoning mix or coating gets listed by its brand or product name only, with none of its own ingredients disclosed. This also risks hiding an allergen.
- Misusing the 2%-or-less bucket. Ingredients well above 2% of the formula get dropped into the “Contains 2 percent or less” line because it’s convenient, not because it’s accurate.
- Skipping “spice” or “flavor” collective terms incorrectly. Assuming every flavoring ingredient must be named individually, or, the other way around, using “flavor” to obscure something that should be called out as an allergen source.
- Wrong panel placement. The ingredient statement ends up on a side panel with no connection to the name and address, or in type smaller than 1/16 inch.
Related rules
The ingredient statement works alongside the allergen “Contains” statement, since allergens are often first disclosed inside this same list. General placement and lettering rules are covered in more depth on type size and placement and principal display panel rules pages, and common label errors are rounded up on label mistakes.
Build it right
NutriLabels’ builder writes your ingredient statement in the correct descending-by-weight order automatically, including the “Contains X percent or less of” grouping and parenthetical sub-ingredient breakouts, once you enter your recipe.
An ingredient list in the right order tells a shopper exactly what’s in your package, and keeps every allergen source in view. Enter your recipe, then see your label: free with no card required, you see your calories, the claims you qualify for, your allergen line and the nutrient to watch, and every other value and %DV stays hidden until you unlock it. $29 unlocks every other nutrient value and %DV, every FDA format your product qualifies for, and your ingredient statement and allergen declaration, ready to print, or send us the recipe and we build it (done-for-you, $249, within 5 business days). Start your label or check the allergen “Contains” statement rules next.
FAQ
Does the FDA require ingredients to be listed by weight?
Yes. 21 CFR 101.4(a)(1) requires ingredients to be listed in descending order of predominance by weight, based on the weight each ingredient contributes to the finished product.
Can I group minor ingredients together at the end of the list?
Yes. Under 21 CFR 101.4(a)(2), ingredients that individually make up 2% or less of the product (or a lower threshold you set, such as 1% or 0.5%) can be grouped at the end with wording like 'Contains 2 percent or less of salt, spices.'
How do I list an ingredient that's made of other ingredients, like a seasoning blend?
21 CFR 101.4(b)(2) lets you either name the sub-ingredients in parentheses right after the compound ingredient's common name, or fold every component directly into the main ingredient list in descending order.
Do I have to name every spice separately?
No. 21 CFR 101.22(h)(1) allows the collective terms 'spice,' 'natural flavor,' or 'artificial flavor' in place of naming each one, and 101.22(k)(2) allows 'Artificial Color' or 'Color Added' for uncertified colors.
Where does the ingredient statement have to appear on the package?
It goes on the same panel as the name and address of the manufacturer, or on the information panel immediately to the right of the principal display panel, per 21 CFR 101.2, in type at least 1/16 inch tall.
Related rules
Allergen "Contains" statement, Type size and placement, PDP & information panel, Common Label Mistakes. See the full all labeling rules.