A binding ruling is a written decision from U.S. Customs and Border Protection that classifies a product under a specific Harmonized Tariff Schedule number, and once issued it binds CBP at every port: no port director can reclassify the product differently while the ruling stands. The rules live in 19 CFR Part 177, and any person with a direct and demonstrable interest in the transaction, the importer, the exporter, or their agent, can request one. There is no government filing fee. The cost is the time and care needed to prepare a complete request, which is where many importers bring in counsel or a customs professional. CBP aims to issue classification rulings handled by its National Commodity Specialist Division in New York within about 30 days, and more complex matters routed to Headquarters generally take around 90 days. Rulings are published in redacted form in CBP's Customs Rulings Online Search System, CROSS, which held more than 220,000 searchable rulings as of mid-2026.
What the request has to contain
CBP runs an electronic eRulings program that lets you file a classification ruling request online through the eRulings Template, which routes the request directly to the National Commodity Specialist Division in New York. A complete request includes the requester's identity and interest in the transaction, a full product description, what the item is, what it is made of, how it works, and how it is used, and your proposed classification with the reasoning behind it, including the relevant HTS headings. The request must concern a real, prospective transaction. CBP will not answer hypothetical questions.
The description is the ruling. CBP classifies based on the article's condition as imported, so describe it exactly as it crosses the border, not as it looks on your website. Include physical samples where possible, detailed specifications, marketing materials showing how the product is presented, and a breakdown of materials and components. A ruling is binding only for goods that actually match the facts you described, so an incomplete or shaded description can leave you unprotected. Include your own classification analysis: cite the General Rules of Interpretation you are relying on, walk through the competing headings, and explain why your proposed classification wins.
Related reading on this site: TariffWatch HQ and Liquidation Is the Moment Tariff Arguments End. Watch Its Clock. cover the neighbouring problems in more depth.
Search CROSS before you file
Before requesting a ruling, search CROSS, CBP's free public database at rulings.cbp.gov, for how CBP has already classified comparable goods. Thousands of rulings are published there, and a ruling on a nearly identical product is often enough to settle the classification without filing at all. The search is also the fastest way to see how CBP reasons: the rulings show which General Rules of Interpretation were applied, which headings were considered and rejected, and what facts mattered. A request that cites a CROSS ruling on a comparable product and explains why it applies is a stronger request than one that starts from scratch.
The classification ruling protects the classification, not the duty rate in perpetuity. If the tariff schedule changes through new trade actions or Section 301 modifications, the ruling's classification stands but the applicable rate follows the law as amended. The ruling does not cover valuation, country of origin, or admissibility. It answers one question: classification. Request a ruling before you scale, not after a problem, because the ruling that arrives after the goods have shipped is a ruling that arrives too late.
What happens if the ruling goes against you
A ruling that classifies the product under a higher-duty heading than you proposed is still useful, because it removes the uncertainty. You now know the duty, you can price the product against it, and you can decide whether to source differently before the next order. The alternative, importing without a ruling and discovering the classification at the port, is worse: the duty is the same, and the misclassification penalty is added on top. If you imported in accordance with a binding ruling issued to you, penalties for misclassification are generally off the table for the covered transactions.
CBP can also modify or revoke a ruling, but not silently. Under 19 U.S.C. 1625, if a ruling has been in effect for at least 60 days, CBP must publish a proposed change in the Customs Bulletin, allow a public comment period of at least 30 days, publish a final decision within 30 days after comments close, and then wait 60 days before the change takes effect. A ruling stays valid until the goods or the law change, or until CBP modifies or revokes it through that notice-and-comment process. That stability is the whole point: a classification you can rely on, in writing, from the agency that enforces it.
Frequently asked questions
What is a CBP binding ruling?
A written decision from U.S. Customs and Border Protection that classifies a product under a specific Harmonized Tariff Schedule number. Once issued, it binds CBP at every port, and no port director can reclassify the product differently while the ruling stands.
How much does a binding ruling cost?
CBP does not charge a fee to issue a ruling. The cost is the time and care needed to prepare a complete, persuasive request, which is where many importers bring in counsel or a customs professional.
How long does a binding ruling take?
CBP aims for about 30 days for requests handled by the National Commodity Specialist Division in New York, and roughly 90 days for more complex matters routed to Headquarters. These are target windows, not guarantees, and complex products or incomplete submissions take longer.
Does a binding ruling protect against misclassification penalties?
Yes, for the covered transactions. If you imported in accordance with a binding ruling issued to you, penalties for misclassification are generally off the table, even if CBP later changes its view prospectively.