TSCA Chemical Data Reporting Requirements

What the EPA’s 2016 requirements did

EPA’s Chemical Data Reporting (CDR) rule under TSCA section 8 requires qualifying U.S. manufacturers, including importers, to report information about chemical manufacture, processing, and use every four years. During the 2016 cycle, the general threshold was 25,000 pounds per chemical at a site, while certain chemicals subject to specified TSCA actions had a 2,500-pound threshold. The 2016 submission window and its 2012–2015 reporting years are now historical.

Who may need to report a substance?

A site may be reportable when it manufactures or imports a TSCA Inventory substance for commercial purposes and reaches an applicable threshold in any covered year. Exemptions depend on the substance, activity, TSCA status, and company size. Importers should not assume that a chemical in a mixture is outside CDR simply because a foreign supplier controls the formulation data.

Current submission periods

EPA published the 2024 CDR dataset in April 2026. It covers chemicals manufactured or imported during 2020–2023 and includes production volumes, uses, and processing information. The next submission period is June 1 through September 30, 2028. For that cycle, companies will report production volumes for 2024–2027 and full manufacturing, processing, and use information for the 2027 principal reporting year.

Prepare now for 2028

Companies should use 2026 to map sites, substances, imports, TSCA actions, production volumes, supplier data, exemptions, and confidential business information. EPA generally applies a 25,000-pound threshold, or 2,500 pounds for chemicals affected by certain TSCA actions, but chemical status must be checked for the relevant cycle.

How Nexreg can help

Nexreg can help businesses organize chemical and supply-chain information and identify regulatory questions requiring CDR review. Contact Nexreg well before the 2028 reporting window.