Buy American Act: Requirements and Exceptions for Contractors

The Buy American Act (BAA), codified at 41 U.S.C. §§ 8301–8305, establishes a federal procurement preference for domestically produced goods and materials. This page covers how the statute defines covered articles, the mechanisms agencies use to apply price differentials, the recognized exceptions that permit foreign-sourced purchases, and the decision points contractors face when structuring supply chains for federal work. Understanding this framework is essential for any contractor supplying products through the Federal Acquisition Regulation system.

Definition and scope

The Buy American Act applies to federal contracts for the direct purchase of supplies and construction materials for use inside the United States. The statute's central requirement is that end products and construction materials must be "domestic end products" — a term the FAR defines through two tests applied at the product level.

The two-part domestic end product test (FAR 25.003):

1. Manufacture test — The article must be manufactured in the United States.
2. Component test — The cost of domestic components must exceed 55 percent of the total component cost. (The FAR Council raised this threshold from 50 percent to 55 percent effective January 2020, with a further increase to 60 percent scheduled, per FAR subpart 25.1.)

The statute covers supplies and construction materials but generally does not apply to services contracts unless the service contract involves the delivery of a covered supply. It also does not apply to purchases made outside the United States for use outside the United States.

The Buy American Act is distinct from the Trade Agreements Act (TAA), codified at 19 U.S.C. §§ 2501–2582. When a procurement is covered by the TAA — triggered when the contract value meets or exceeds the World Trade Organization Government Procurement Agreement (WTO GPA) threshold, which the United States Trade Representative adjusts periodically — the Buy American preference is waived in favor of eligible country end products. Contractors supplying products from TAA-designated countries on above-threshold contracts face different compliance logic than those on smaller, BAA-only procurements.

How it works

When a BAA-covered solicitation is issued, offerors must certify the country of origin for each end product using the representations in FAR 52.225-2. The contracting officer then applies a price differential when evaluating bids that include non-domestic end products.

Under FAR 25.105, the evaluation adjustment is:

• 6 percent added to the price of a foreign end product when the low domestic offer comes from a large business
• 12 percent added when the low domestic offer comes from a small business
• 50 percent added when the foreign end product is iron, steel, or a manufactured product and the domestic offer is from any business (for certain construction contracts)

These differentials do not change the actual contract price; they adjust evaluated bids to give domestic products a cost advantage during source selection. If the domestic product remains the low evaluated offer after adjustment, the domestic supplier wins. If the foreign product remains lower after the adjustment, the contracting officer must apply a separate determination before proceeding.

Common scenarios

Scenario 1 — Commercial IT hardware. A contractor proposes laptops assembled in a foreign country for an office supply contract below the TAA threshold. Unless a waiver applies, the contracting officer adds the applicable price differential to evaluate that bid. If the total evaluated price still beats domestic alternatives, the contracting officer must make a written determination that domestic preference would be inconsistent with the public interest or that the domestic price is unreasonable before awarding.

Scenario 2 — Construction materials with mixed-source components. A prime contractor on a federal building project sources steel from a domestic mill but procures prefabricated windows from Canada. The windows must independently satisfy the two-part test. Steel and iron used in construction projects are subject to a distinct "all manufactured in the U.S." rule under FAR 25.202, not the component cost percentage test.

Scenario 3 — Subcontractor-sourced goods. Prime contractors are responsible for the origin representations their subcontractors provide. A false certification flowing up from a subcontractor can expose the prime to liability under the False Claims Act.

Decision boundaries

Contractors must navigate four primary exceptions that permit foreign-sourced purchases without triggering the price differential penalty:

1. Non-availability exception — The required article is not mined, produced, or manufactured in the United States in sufficient and reasonably available commercial quantities of satisfactory quality (FAR 25.103(b)). The FAR maintains a non-availability list at FAR 25.104; items on that list are pre-approved for foreign sourcing.

2. Unreasonable cost exception — The cost of a domestic end product is unreasonable — meaning the evaluated price after applying the BAA differential still favors the foreign product. The contracting officer documents this determination in the contract file.

3. Public interest waiver — An agency head may waive BAA requirements when application would be inconsistent with the public interest, such as when a reciprocal trade agreement or defense cooperation agreement with a foreign country is in effect.

4. Micro-purchase threshold — Purchases at or below the micro-purchase threshold (set at $10,000 for most civilian agencies as of FAR 2.101) are exempt from BAA requirements.

BAA vs. TAA — the threshold boundary:

The WTO GPA threshold for federal supply contracts is $182,000 for most civilian agencies, as periodically adjusted by the U.S. Trade Representative. Defense contracts operate under separate DFARS thresholds.

Contractors building compliance programs around BAA obligations should also review their obligations under subcontracting plans, since domestic sourcing requirements can intersect with small business subcontracting goals. A broad orientation to the full landscape of contractor compliance obligations is available at the Government Contractor Authority index.