Market Data

Steel Tariffs by the Numbers: What Four Product Families Paid in 2025

Four steel families, four different duty realities. The effective rates importers paid tell the story the schedule can't.

Steel is where U.S. tariff policy concentrates, and the customs data shows it family by family. In 2025, the four steel families MFG Calcs tracks cleared customs at effective rates far above their printed MFN columns, and the gaps between families matter for anyone deciding what to buy domestic and what to import.

Source mix drives the differences. Steel fasteners imports came led by Taiwan at a 31.72% effective rate, while steel flat-rolled products flows lean on origins with Section 232 exposure. The same part number can carry a very different duty bill depending on the mill that made it.

The printed rate is a floor. For steel, the overlays are the building.

For quoting, the practical move is to price at the family's effective rate for the origin you actually use, then stress the quote at the top-country rate. The family pages carry both, refreshed as USITC publishes. Reference statistics derived from USITC published data. Not a customs ruling; verify rates with a licensed customs broker before relying on them.

Statutory vs effective rates and source countries for every steel family. Steel family rate pages

Published 2026-07-19.