Capper-Volstead Act Explained for Farm Co-ops

The Capper-Volstead Act is a 1922 US federal law that lets farmers act together in associations to process, prepare, handle and market what they produce, in interstate and foreign commerce, without those associations being treated as illegal combinations under the antitrust laws for that reason alone. It is codified at 7 U.S.C. 291 and 292. It protects associations of producers, not farm suppliers, processors or traders, and it has limits: the Secretary of Agriculture can order an association to stop if it unduly enhances prices, and the courts have held that the Act does not shield every action a farmer co-op takes.

This page explains what the Act says, who qualifies, where the limits sit, and why it matters to the agricultural cooperatives that sell milk, fruit, nuts, grain and livestock. It is general information, not legal advice. A co-op deciding whether a specific arrangement is covered should ask a lawyer who handles agricultural antitrust law.

Capper-Volstead at a glance

What the Act says

Section 1 of the Act opens with the list of people it covers: persons engaged in the production of agricultural products as farmers, planters, ranchmen, dairymen, nut or fruit growers. They "may act together in associations, corporate or otherwise, with or without capital stock, in collectively processing, preparing for market, handling, and marketing in interstate and foreign commerce, such products of persons so engaged." The official text is in the GovInfo compilation of the Act, and USDA Rural Development explains it in its circular Understanding the Capper-Volstead Act.

Three conditions come with that permission:

1. Mutual benefit. The association must be operated for the mutual benefit of its members as producers.
2. One of two tests. Either no member may get more than one vote because of the amount of stock or membership capital they own, or the association may not pay dividends on stock or membership capital above 8 per cent a year. Many co-ops meet both.
3. Member business first. The association may not deal in the products of non-members to an amount greater in value than the products it handles for members. USDA's circular adds that goods members buy elsewhere and then market through the co-op count as non-member product for this test.

Those conditions track the ordinary cooperative principles: one member, one vote, limited return on capital, and the business serving the people who own it.

Who qualifies

Capper-Volstead protection is for producers. USDA's own guidance describes it as available to associations that limit their membership to bona fide agricultural producers. That has several practical consequences:

• A dairy co-op whose members are dairy farmers is the textbook case.
• A cranberry, citrus or almond marketing co-op owned by growers fits the same pattern.
• A group made up of processors, packers or traders does not qualify just because the product starts on a farm.
• A co-op that mixes producers with non-producers has to be examined member by member, because the protection depends on who the members are.

The Supreme Court dealt with this in National Broiler Marketing Association v. United States, 436 U.S. 816 (1978). The Court read the Act's qualifying phrase as narrowing its opening words, so not everyone who produces an agricultural product is covered. An association whose members were not themselves farmers fell outside the protection.

"Agricultural products" has a broad meaning elsewhere in federal co-op law. The Cooperative Marketing Act of 1926 defines the term in 7 U.S.C. 451 to include farm, horticultural, dairy, livestock, poultry, bee and forestry products and processed versions of them that move in interstate or foreign commerce. Whether a given product falls inside Capper-Volstead specifically is a legal question for the facts at hand.

The limits

The Secretary of Agriculture's power (section 2)

Section 2 is the Act's own check on the freedom it grants. If the Secretary of Agriculture has reason to think an association monopolises or restrains trade to the point that the price of an agricultural product is unduly enhanced, the process runs like this:

1. The Secretary serves the association with a complaint and a notice of hearing, with a hearing date at least 30 days away.
2. At the hearing the association can show cause why no order should be entered. Evidence is taken under rules the Secretary prescribes.
3. If the Secretary finds undue price enhancement, the Secretary issues a cease-and-desist order with findings of fact.
4. If the association does not comply within 30 days, the Secretary files the order in federal district court. The Secretary's findings of fact count as prima facie evidence, and the Department of Justice enforces the order.

The procedural rules for these proceedings sit in USDA's regulations at 7 CFR 1.160 and following. The statutory standard is "undue" price enhancement, which is not the same as any price increase. Co-ops exist partly to improve what farmers are paid, so the Act accepts a better price and targets only the undue kind brought about by monopolisation or restraint of trade.

Antitrust cases still happen

Section 2 does not make the Secretary the only enforcer. In Maryland and Virginia Milk Producers Association v. United States, 362 U.S. 458 (1960), the Supreme Court held that section 2 does not bar all antitrust prosecutions of cooperatives. A co-op therefore has the Act's protection for lawful collective marketing, and not blanket immunity for every practice. Conduct that goes beyond collective marketing by producers, such as joining with non-exempt businesses to fix prices or exclude competitors, is the kind of conduct that falls outside what the Act was written to protect.

The Department of Justice Antitrust Division has a page on agricultural cooperatives and the antitrust laws that sets out the agency's view of where these lines sit.

What the Act does not cover

• Non-farm businesses. A co-op's own suppliers, retailers and processors that are not producer-owned are not protected by being associated with it.
• Credit and supply co-ops. Capper-Volstead speaks to processing and marketing farm products. Farm supply and credit co-ops are covered by other rules, including the tax code (see cooperative taxation).
• Other laws. Securities, tax, labour, environmental and food-safety rules apply to a producer co-op like any business.

How it fits with the Clayton Act and the Cooperative Marketing Act

Capper-Volstead is one of three federal laws that shape how farmers can cooperate:

The Clayton Act text is in the GovInfo compilation, and the Cooperative Marketing Act is in GovInfo as well. A Cornell Law Review article on the agricultural cooperative antitrust exemption describes the Clayton Act protection as limited and the broader exemption as coming with Capper-Volstead.

The Cooperative Marketing Act also matters for what co-ops can talk about. Under section 455, producers may exchange market and statistical information directly or through a common agent. USDA describes member education about supply levels as authorised by that Act.

Why it matters to dairy and other co-ops

The Act is the legal reason a dairy co-op can bargain for the milk of thousands of farms at once. Without it, a group of competing farmers agreeing on a milk price could look like a price-fixing cartel. With it, a producer-owned association that meets the conditions can pool volume, set a price for the milk it markets and negotiate with processors.

The Congressional Research Service's Overview of Dairy Cooperatives (November 2024) reports 89 dairy cooperatives in 2022, handling 87 per cent of US milk and milk products. That is the largest-scale use of the Act. On the dairy side, the dairy cooperatives page covers how milk pooling and member pay work in practice.

Other products use it too. Growers of citrus, nuts, cranberries, grapes and raisins market through co-ops, and some of those co-ops own consumer brands. See brands that are cooperatives for the co-ops behind brands such as Sunkist, Blue Diamond and Ocean Spray.

Practical points for a farm co-op

• Check the membership rule. Bylaws that admit non-producers (for example processors, input dealers or investors) need legal review against the producer requirement.
• Track member and non-member volume. The value test compares what the association handles for non-members with what it handles for members.
• Know which test you rely on. Write the one-vote or dividend-cap provision into the bylaws so the association can show it meets one of the two.
• Keep the line at collective marketing. Joint marketing of members' own products is the core. Coordination with outside companies on price is where trouble starts.
• Get advice before a merger or a joint venture. Combining with a non-producer business, or entering a marketing agreement that restricts others, can change the analysis. See cooperative mergers.
• Use USDA's free material. USDA Rural Development publishes circulars for co-ops, including the Capper-Volstead guide above.

If you are weighing whether to set up a producer co-op, the steps are in how to start an agricultural cooperative, and marketing cooperatives covers the model Capper-Volstead was written for.

Capper-Volstead and the rest of the agriculture guides

• Agricultural cooperatives: the full guide to farm supply, marketing and processing co-ops in the US
• The 10 largest agricultural cooperatives in the United States: who is biggest, by revenue
• Dairy cooperatives: the largest US dairy co-ops, milk pooling and member pay
• Brands that are cooperatives: the farmer-owned co-ops behind the labels on the shelf
• Agricultural cooperative examples and farm cooperatives
• Patronage refunds: how a co-op returns its earnings to members

FAQ

What is the Capper-Volstead Act in simple terms?

It is a 1922 US law that lets farmers join together in associations to process and sell what they grow, in interstate and foreign commerce, and treats that collective marketing as lawful rather than as an antitrust violation by itself. The association has to be run for its members as producers and meet either a one-vote rule or an 8 per cent cap on dividends.

Who is covered by the Capper-Volstead Act?

Persons engaged in the production of agricultural products as farmers, planters, ranchmen, dairymen, and nut or fruit growers. USDA describes the protection as limited to associations of bona fide producers. The Supreme Court in National Broiler Marketing Association read the qualifying phrase as narrowing the opening words, so an association of non-farmers is outside it.

Does Capper-Volstead give co-ops immunity from antitrust law?

No. It gives producer associations a lawful basis to market collectively. The Supreme Court held in Maryland and Virginia Milk Producers Association v. United States that section 2 does not bar all antitrust prosecutions of cooperatives. The Secretary of Agriculture can also order an association to stop if it unduly enhances prices through monopolisation or restraint of trade.

What is "undue price enhancement"?

It is the standard in section 2. If the Secretary has reason to believe an association is monopolising or restraining trade so that the price of an agricultural product is unduly enhanced, the Secretary can issue a complaint and hold a hearing, and can order the association to cease and desist. The Act does not define a price level. It targets prices raised unduly by monopolisation or restraint, not prices that simply rise.

How is the Capper-Volstead Act different from the Clayton Act?

Section 6 of the Clayton Act (1914) says the antitrust laws do not forbid the existence and operation of agricultural or horticultural organisations formed for mutual help and without capital stock. Capper-Volstead (1922) extends permission to producer associations with or without capital stock to process and market jointly, with conditions on voting or dividends and on member versus non-member business.

What is the Cooperative Marketing Act of 1926?

It is the third federal law in the set. It is codified at 7 U.S.C. 451-457, defines "agricultural products", sets up USDA's cooperative work, and lets producer associations acquire, exchange, interpret and disseminate crop, market, statistical and economic information.

Why does Capper-Volstead matter for dairy?

Dairy co-ops market the milk of many farms as one pool. The Congressional Research Service reports that in 2022 there were 89 dairy cooperatives in the United States and that they accounted for 87 per cent of the market for US milk and milk products. Capper-Volstead is the legal footing for that kind of producer-owned marketing.

Can a co-op that buys from non-members still qualify?

Yes, within limits. The association may not deal in the products of non-members to an amount greater in value than the products it handles for members. USDA's circular adds that products members buy elsewhere and market through the co-op count as non-member product for that comparison.

Sources

The Act and related federal laws are read from the GovInfo compilations and USDA Rural Development guidance listed in the sources section below. Court decisions are cited to the Supreme Court opinions. This page is general information and not legal advice.