Tariff

A tax on imported goods used to protect domestic industry or pressure trading partners, reshaping supply chains.

Also known as: Import Duty, Customs Duty

What it is

A tariff is a tax imposed on imported products, raising their cost at the border. Governments use tariffs to shield domestic producers, retaliate in disputes, or raise revenue. They can be broad or targeted by product and country.

What it does

Tariffs advantage domestic producers of the taxed goods while raising input costs for importers and downstream manufacturers. Investors sort winners (protected producers) from losers (import-dependent firms and retailers). Announcements and exemptions move stocks quickly.

The evidence

Steel and aluminum tariffs have historically lifted U.S. metal producers while pressuring import-reliant manufacturers and their margins.

Best for

Domestic producers like NUE, STLD, X; pressures import-heavy retailers.

Pairs well with

section-232, section-301, buy-american

Use cautiously with

Retaliation and exemptions can flip the calculus; protected producers can still lose if trading partners hit their exports.

Cautions

Tariff threats are often negotiating leverage that gets softened, so the first move can reverse on a deal.