Are dietary supplements and meal replacements taxed as food for sales tax purposes?

The Streamlined definitions and the label test

The Streamlined Sales and Use Tax Agreement requires member states to use common definitions, set out in a Library of Definitions in Appendix C (Agreement section 327). The governing board's taxability matrix lists "food and food ingredients," "dietary supplements," "candy," "soft drinks" and "prepared food" as separate defined items, each defined in Appendix C (Streamlined Sales Tax Governing Board, Form F0014, 2022 Taxability Matrix: Library of Definitions). A member state that exempts food reports, item by item, whether it also exempts each of the others.

The member states enact the definitions in their own codes. Washington's version is typical. "Food and food ingredients" means substances "sold for ingestion or chewing by humans" that "are consumed for their taste or nutritional value," excluding alcoholic beverages, tobacco and cannabis (RCW 82.08.0293(1)). A "dietary supplement" is "any product, other than tobacco, intended to supplement the diet" that meets three conditions: it contains a dietary ingredient such as a vitamin, mineral, herb or other botanical, or amino acid; it "is intended for ingestion in tablet, capsule, powder, softgel, gelcap, or liquid form, or if not intended for ingestion in such form, is not represented as conventional food and is not represented for use as a sole item of a meal or of the diet"; and it "is required to be labeled as a dietary supplement, identifiable by the 'supplement facts' box found on the label as required pursuant to 21 C.F.R. Sec. 101.36" (RCW 82.08.0293(2), as quoted in Det. No. 15-0075, 35 WTD 482 (2016)). Utah's statute uses the same three conditions, with the label prong reading "identifiable by the 'Supplemental Facts' box found on the label" and "as required by 21 C.F.R. Sec. 101.36" (Utah Code section 59-12-102, definition of "dietary supplement").

The third condition borrows the federal labeling rules. Under 21 C.F.R. 101.36(a), "[t]he label of a dietary supplement that is offered for sale shall bear nutrition labeling in accordance with this regulation," and the panel's title, "Supplement Facts," is set in larger type than any other print in the label (21 C.F.R. 101.36(e)(1)). Conventional foods carry their nutrition information "under the identifying heading of 'Nutrition Facts'" (21 C.F.R. 101.9(d)(2)). The manufacturer's labeling decision therefore drives the tax classification in a Streamlined state: a protein powder in a tub with a Supplement Facts box is a dietary supplement, and the same powder relabeled as a conventional food with a Nutrition Facts box is food.

Washington's Department of Revenue treats the box as an objective test. In Det. No. 15-0075, a clinic resold products that carried Supplement Facts boxes and no Nutrition Facts boxes. It argued that the vendor might qualify for one of the small business exemptions in 21 C.F.R. 101.36(h), so the products were not "required" to be labeled as supplements. The Department held that the products were dietary supplements because the taxpayer had not shown that they failed the statutory criteria, and it sustained the tax (Det. No. 15-0075, 35 WTD 482 (2016)).

Meal replacements reach the food side by two routes. The first is the label: a shake or bar sold as a conventional food carries a Nutrition Facts panel. The second is the definition itself: a product that is not in pill, powder or liquid form, and is represented "for use as a sole item of a meal or of the diet," is not a dietary supplement. A liquid meal replacement can still be caught by the soft drink exclusion, which in Washington's version reaches sweetened nonalcoholic beverages but not those containing milk or milk products, milk substitutes, or more than 50 percent vegetable or fruit juice by volume (RCW 82.08.0293(2)).

A manufacturer selling three invented items nationally shows how far the answers diverge: (1) a whey protein powder in a two-pound tub, labeled with a Supplement Facts box; (2) a ready-to-drink, milk-based chocolate shake labeled with a Nutrition Facts panel and marketed as balanced nutrition for a meal; and (3) a 60-gram meal replacement bar labeled as one serving with a Nutrition Facts panel, sold both singly and in boxes of 12.

Washington: the Streamlined model applied

Washington exempts "sales of food and food ingredients" from retail sales tax, but the exemption "does not apply to prepared food, soft drinks, bottled water, or dietary supplements" (RCW 82.08.0293(1), (2)). The Department's rule adds two points that matter for this product category. "If a product is otherwise considered a food or food ingredient and labeled with both a 'supplement facts' box and 'nutrition facts' box, the product is treated as a food or food ingredient" (WAC 458-20-244(4)(h)(iii)). And "[n]utrition products formulated to provide balanced nutrition as a sole source of a meal or of the diet are considered a food or food ingredient and not a dietary supplement" (WAC 458-20-244(4)(h)). The Department's page on sales of dietary supplements adds that a dual-labeled product is still taxable if it is a soft drink or prepared food (Washington Department of Revenue, Sales of dietary supplements).

The rule also separates beverage mixes from beverages: "Beverage mixes that are not sold in liquid form are not soft drinks even though they are intended to be made into a beverage by the customer," with powdered fruit drinks, powdered tea or coffee drinks and frozen concentrates as examples (WAC 458-20-244(4)(g)). Sweetened sports beverages, by contrast, are soft drinks (WAC 458-20-244(4)(g)).

Applied to the three items: the protein powder is a taxable dietary supplement, unless it also carries a Nutrition Facts box; the milk-based shake is food, both because a beverage containing milk is not a soft drink and because it is formulated as a meal; and the bar is food whether sold singly or by the box. A separate exemption covers "sales of dietary supplements for human use dispensed or to be dispensed to patients, pursuant to a prescription" (RCW 82.08.925), and Det. No. 15-0075 held that a practitioner's recommendation is not a prescription where the practitioner is not authorized by Washington law to prescribe.

Chapter 238, Laws of 2026 (ESSB 6346) exempts over-the-counter drugs, diapers, and grooming and hygiene products beginning January 1, 2029, according to the House bill report, which does not mention dietary supplements; the act's title does not list RCW 82.08.0293 among the sections it amends.

Reduced food rates: Utah and Alabama

Utah shows that adopting the Streamlined definition does not require taxing supplements differently. Utah defines "dietary supplement" in the uniform terms but excludes from "food and food ingredients" only "an alcoholic beverage," "tobacco," and "prepared food" (Utah Code section 59-12-102, definition of "food and food ingredients"). Supplements are therefore food and take the reduced food rate (Utah Code section 59-12-103(2)(c)). The Tax Commission states that "[t]he statewide grocery food sales tax rate is 3 percent," that "[v]itamins and food supplements are grocery food taxed at the lower rate," and that a "[n]utritional or supplemental fact box on label means item is food" (Utah State Tax Commission, Food rate, read October 14, 2026). All three items take the grocery rate. The exposure in Utah is the bundle: where food and other tangible personal property are sold together as a bundled transaction, the general rate applies to the whole transaction (Utah Code section 59-12-103(2)(f)), so a gift set that pairs a protein powder with a shaker bottle can lose the grocery rate.

Alabama reaches the label test by a different path. Its state sales and use tax rate on food was reduced from 3 percent to 2 percent on September 1, 2025 (Act 2025-305), and the state portion was suspended from May 1 through June 30, 2026 (Act 2026-604); city and county rates on food were not affected by the suspension (Alabama Department of Revenue, Notice: Temporary Suspension of State Sales and Use Tax on Food, April 17, 2026). For these purposes "[f]ood has the same meaning as defined in 7 U.S.C. § 2011, for the purposes of the federal Supplemental Nutrition Assistance Program (SNAP)," and the Department sends item-level questions to the USDA's list of eligible items (Alabama Department of Revenue, Notice: State Sales and Use Tax Rate Reduced on Food Beginning September 1, 2025). The USDA's list excludes "[v]itamins, medicines, and supplements" and states that "[i]f an item has a Supplement Facts label, it is considered a supplement and is not eligible for SNAP purchase" (U.S. Department of Agriculture, What Can SNAP Buy?, updated June 4, 2025).

In Alabama, the protein powder is not food and is taxed at the general state rate plus local tax; the shake and the bar are SNAP-eligible food and take the reduced state food rate plus whatever rate the city and county apply to food. The SNAP route also produces a different answer from Washington on a dual-labeled product. Washington treats a product with both boxes as food; the USDA guidance treats any product with a Supplement Facts label as a supplement.

Supplements exempt by another route: Texas and New York

Texas is not a Streamlined member, and it reaches a broader exemption by moving supplements out of food and into health care supplies. "Food products" do not include "drugs, medicines, tonics, vitamins, dietary supplements, and medicinal preparations in any form" (Tex. Tax Code section 151.314(c)(1)), but "a dietary supplement" is exempt as a health care supply (Tex. Tax Code section 151.313(a)(14)). A product is a dietary supplement if it contains vitamins, minerals, herbs or botanicals, amino acids, or substances that supplement daily dietary intake, "is not represented as food or the sole item of a meal or the diet," and "is labeled 'dietary supplement' or 'supplement'"; or if it "is labeled or required to be labeled with a 'Supplement Facts' panel in accordance with regulations of the federal Food and Drug Administration" (Tex. Tax Code section 151.313(d)). The Comptroller's guidance for grocers puts it directly: "Dietary supplements are not taxable" (Texas Comptroller, Publication 96-280, Grocery and Convenience Stores, revised March 2024).

The Texas risks sit on the food side. The food exemption covers "snack items," which include "breakfast bars, granola bars, nutrition bars, sports bars, protein bars, or yogurt bars, unless labeled and marketed as candy" (Tex. Tax Code section 151.314(b-1)(1)), but the exemption "does not apply to a snack item if the item is sold through a vending machine or is sold in individual-sized portions," meaning a portion that "is labeled as having not more than one serving" or "contains less than 2.5 ounces" (Tex. Tax Code section 151.314(h)). Soft drinks, defined as "nonalcoholic beverages that contain natural or artificial sweeteners," are not food products (Tex. Tax Code section 151.314(c)(2)). The Comptroller lists "[c]anned, bottled, frozen or powdered drinks and drink mixes" as soft drinks. It excepts energy, sports and electrolyte drinks that carry a Supplement Facts panel, "contain milk, milk products, milk substitutes (almond, soy, rice, etc.)," or contain more than 50 percent juice, and in a separate entry it lists beverages that contain milk, milk products or milk substitutes as nontaxable (Publication 96-280).

Applied to the three items: the protein powder is exempt as a dietary supplement; the milk-based shake is exempt food, outside the soft drink category because it contains milk; and the bar is exempt in a box of 12 but taxable when sold singly, because a bar labeled as one serving is an individual-sized snack item.

New York exempts supplements inside its food exemption. The exemption covers "[f]ood, food products, beverages, dietary foods and health supplements, sold for human consumption," but not "candy and confectionery," fruit drinks with less than 70 percent natural fruit juice, or "soft drinks, sodas and beverages such as are ordinarily dispensed at soda fountains" (N.Y. Tax Law section 1115(a)(1)(A)). The Department's bulletin states that a qualifying product is exempt regardless of whether it is sold as a solid, liquid, pill or powder, and lists meal replacement mixes, nutritional or protein powders, protein bars and similar products as exempt. Sports drinks and energy drinks do not qualify (Tax Bulletin ST-160, Dietary Foods and Health Supplements, April 13, 2011). The bulletin does not use the Supplement Facts test. All three items are exempt in New York.

Definitions that do not turn on the label: California and Arizona

California exempts "food products for human consumption" (Rev. and Tax. Code section 6359(a)) but excludes from food products "preparations in liquid, powdered, granular, tablet, capsule, lozenge, and pill form sold as dietary supplements or adjuncts" (Rev. and Tax. Code section 6359(c)(1)). Regulation 1602 sets out two categories. Category (A) is a product in one of those forms "which is described on its package or label as a food supplement, food adjunct, dietary supplement, or dietary adjunct." Category (B) is a product "which is prescribed or designed to remedy specific dietary deficiencies or to increase or decrease generally" vitamins, proteins, minerals or caloric intake; for category (B), "it is important whether the manufacturer has specially mixed or compounded ingredients for the purpose of providing a high nutritional source," and "protein supplements and vitamin pills are taxable as food supplements" (Cal. Code Regs., tit. 18, section 1602(a)(4)). Fortified conventional foods, "e.g., vitamin-enriched milk and high protein flour," remain food (section 1602(a)(4)).

The regulation then carves out "complete dietary foods providing the user in the recommended daily dosage with substantial amounts of vitamins, proteins, minerals and foods providing adequate caloric intake." Such a product is a food if it provides "70 grams of high quality protein," "900 calories," and the federal minimum daily requirements for vitamins A, B1, C, D, riboflavin and niacin or niacinamide and for calcium, phosphorus, iron and iodine (section 1602(a)(4)). The regulation has not been amended since its 2008 revision. In a 1996 opinion letter, the Board of Equalization's tax counsel concluded that a powdered product labeled as a dietary supplement was taxable and not a complete dietary food, while two liquid nutrition products labeled as complete, balanced nutrition remained exempt (Sales and Use Tax Annotation 245.1293 (July 1, 1996)).

California's test reads the words on the package and the purpose of the formula, not the panel heading. The protein powder is taxable under both categories. The shake is a liquid designed to increase protein and caloric intake, so it is food only if, at its recommended daily dosage, it meets the complete dietary food minimums; a shake that falls short is taxable even with a Nutrition Facts panel. The bar is not in any of the forms the statute and the regulation list (liquid, powdered, granular, tablet, capsule, lozenge or pill), and on that text it stays within food products, the result Sales and Use Tax Annotation 245.1364 (April 18, 1991) reached for a meal replacement bar because a bar is not one of the listed forms.

Arizona exempts from state transaction privilege tax the sale of food by qualifying retailers, "[e]xcept for the gross proceeds of sales or gross income from the sale of food for consumption on the premises" (A.R.S. section 42-5102(A)), and defines food as "any food item intended for human consumption that is intended for home consumption as defined by rules adopted by the department" (A.R.S. section 42-5101). Supplements are addressed separately: a "nonprescription product" is a drug or other article purchasable without a prescription, with "over-the-counter drugs and those dietary supplements, vitamins, minerals, herbs, and other similar supplements that do not qualify as prescription drugs" as examples, and "[g]ross receipts from the sale to the final consumer of nonprescription products . . . are subject to tax" (Ariz. Admin. Code R15-5-156(A)(6), (E)). The rule does not use the label to draw the line.

The protein powder is a taxable nonprescription product. The shake and the bar, as food for home consumption sold by a retailer that provides no facilities for eating on the premises, are exempt from state and county tax, but cities may tax food under their own codes, as the Department noted for one city in Taxpayer Information Ruling LR 21-001 (March 22, 2021). Proposition 316 (HCR 2021), referred to the November 2026 ballot, would require voter approval for city food tax increases and new city food taxes and cap them at 2 percent of the tax base (Arizona Legislative Council, analysis of HCR 2021).

Hard cases and open questions

Dual labels. Washington treats a product with both boxes as food (WAC 458-20-244(4)(h)(iii)); the USDA guidance that Alabama follows treats any product with a Supplement Facts label as a supplement; Utah and New York reach food either way; Texas treats any product labeled with a Supplement Facts panel as an exempt supplement (Tex. Tax Code section 151.313(d)(2)); and the other states examined here have published no dual-label rule.

Missing or wrong labels. The Streamlined definition asks whether the product is "required" to be labeled as a supplement, not only whether it is. Washington's determination placed the burden on the taxpayer to show that a product with a Supplement Facts box fell outside the definition. Texas reaches products "labeled or required to be labeled" with the panel and, separately, products labeled "supplement." Where a label does not match the product's federal status, the states examined here have not said whether the tax follows the label or the status.

Powders that are neither supplement nor milk-based. Texas lists powdered drinks and drink mixes among soft drinks (Publication 96-280); a product with a Supplement Facts panel is an exempt supplement, and the publication lists beverages containing milk or a milk substitute as nontaxable in a separate entry. Washington, by contrast, excludes mixes not sold in liquid form from the soft drink category. A sweetened plant-protein powder labeled with Nutrition Facts sits on that line in Texas, and the Comptroller has not addressed it in the publication.

Single servings and bundles. A bar or shake sold as one serving can move from exempt to taxable in Texas (section 151.314(h)), and a kit that combines a supplement or food item with merchandise can lose a reduced rate in Utah (section 59-12-103(2)(f)). Product setup at the SKU level, not the brand level, decides these.

Pending changes. Washington's 2029 over-the-counter drug exemption, Arizona's Proposition 316, and Alabama's food rate, reduced in September 2025 and suspended for May and June 2026, each bear watching as of October 14, 2026.

Practice notes

The sound sequence starts with the label, not the marketing. Each SKU is classified by its panel (Supplement Facts, Nutrition Facts or both), its form, its serving count, and whether it contains milk, a milk substitute or juice, and that record is mapped to each state's own definition. A seller that assigns one tax code to a whole product line will misclassify somewhere, most often the single-serving bar in Texas, the meal replacement shake in California, and the dual-labeled product in Alabama. Archived label images, dated by formula version, are the evidence an auditor asks for, because a relabeling changes the classification from the date of the new label. In California the file records whether a liquid meal replacement meets the complete dietary food minimums; in Arizona and Alabama, city and county treatment of food is checked separately from the state rule. G&G State Tax Group provides product taxability reviews and sales tax audit representation for food, beverage and supplement sellers alongside its state and local tax practice.