How to request a CBP binding ruling

TL;DR

• A CBP binding ruling under 19 CFR Part 177 locks in CBP's position on tariff classification, country of origin, marking, or valuation for a specific importer and a specific transaction. Per 19 CFR 177.9(a), it is binding on all CBP personnel for that transaction until modified or revoked.
• File electronically through CBP's eRulings template at erulings.cbp.gov. NY classification rulings target 30 calendar days; HQ rulings and complex questions take 90+ days.
• Search the existing rulings first. CBP CROSS at rulings.cbp.gov holds the full public ruling library; if a published ruling already addresses your fact pattern, you may not need a new one.
• File when the duty exposure on the wrong answer outweighs the engineering cost. The HTS Catalog at tariffs.tandom.ai/hts-catalog shows the duty stack at each candidate subheading so the value-of-information call is concrete.

When a binding ruling is worth filing

The decision is a straight value-of-information call: how much duty rides on getting the classification right, times the probability the wrong answer will be assessed. File when that number is bigger than the engineering cost of writing the request.

The fact patterns where the answer is almost always yes:

• Two plausible HTS subheadings with different rate stacks. Section 232 metals (50% in 2026), Section 301 China (7.5 to 100% across the four lists and the September 2024 four-year-review categories), AD/CVD (frequently 50 to 200% deposit rates), or major MFN gaps create real per-entry dollar differences. A wrong call on a high-volume product compounds across every shipment until CBP catches it.
• Novel article without a clear CROSS precedent. New consumer electronics, hybrid articles (a Bluetooth speaker that is also a flashlight), unusual textile blends, or anything that bridges two traditional headings.
• Marking and origin questions where substantial transformation is contested. A product assembled in Mexico from Chinese components needs a clear answer on whether it is China-origin (full Section 301 exposure plus Mexico-origin marking risk) or Mexico-origin (potentially USMCA-eligible).
• Valuation where transaction value is contested. First-sale-for-export claims, assists, related-party pricing, or computed value selections are high-stakes and CBP scrutinizes them.
• USMCA / FTA preference claims. RoO compliance has tariff-shift and regional-value-content tests that turn on facts CBP will audit. A binding ruling on the origin determination locks in the methodology.

The fact patterns where it is usually not worth it:

• The answer is in CROSS already. Find the published ruling, attach it to the broker's file, and cite it. New rulings cost 30 to 90 days; copying one costs 30 minutes.
• Low-volume one-time entry. If the duty difference between two subheadings is $200 and you ship the article once, write the broker's note and move on.
• The article changes frequently. Rulings bind a specific configuration. A prototype that will iterate three more times before production is not a candidate yet.

NY ruling vs HQ ruling

CBP issues two ruling formats. Both are equally binding under 19 CFR 177.9. The difference is which CBP office handles the question.

NY (National Commodity Specialist Division)

NY rulings come from the National Commodity Specialist Division at 201 Varick Street, New York. They cover routine tariff classification, country of origin, marking, and any straightforward question that lines up with an existing National Import Specialist's commodity portfolio. Per 19 CFR 177.2(b)(1), these requests go to:

Director, National Commodity Specialist Division
Regulations and Rulings, Office of International Trade
U.S. Customs and Border Protection
201 Varick Street, Suite 501
New York, New York 10014

NY ruling numbers start with the letter "N" followed by six digits (e.g., N123456). The 30-day target in 19 CFR 177.2(c) applies to NY rulings; in practice the issuance time runs 30 to 60 days for routine questions. Filing through erulings.cbp.gov routes to NY automatically.

HQ (Regulations and Rulings, Washington)

HQ rulings come from CBP Regulations and Rulings in Washington, DC. They cover novel legal questions, anything requiring a precedent decision, valuation, drawback, NAFTA / USMCA verifications, country-of-origin questions where substantial transformation analysis is non-trivial, and any reconsideration of an NY ruling. Per 19 CFR 177.2(b)(1), valuation and carrier-related requests go to:

Commissioner of Customs and Border Protection
Attention: Regulations and Rulings
Office of International Trade
Washington, DC 20229

HQ ruling numbers start with the letter "H" followed by six digits (e.g., H123456). HQ rulings take longer (90 days is a realistic floor; complex matters run 6 to 12 months). HQ can modify or revoke an NY ruling on the same merchandise; HQ controls.

Search CROSS before you file

The Customs Rulings Online Search System at rulings.cbp.gov holds the full public ruling library, NY and HQ, going back decades. Every ruling published since the late 1990s is searchable by article description, HTS subheading, ruling number, requester, and ruling date.

Search before filing for two reasons:

• If a published ruling already covers your fact pattern, you may not need a new one. Per 19 CFR 177.9(c) the binding effect runs only to the addressee, but a published ruling on similar merchandise is persuasive authority. Brokers cite CROSS rulings on entry filings as the basis for the classification.
• If a published ruling is close but not on point, your request can frame why the prior ruling does not apply. The strongest binding-ruling requests anticipate the National Import Specialist's objection and address it on the front page.

Search by competing HTS subheadings, by article keywords, and by manufacturer when relevant. Save the ruling PDFs to the import compliance file. The Tandom HTS Catalog at tariffs.tandom.ai/hts-catalog shows the duty stack at every candidate subheading so the financial difference between competing classifications is visible at a glance.

How to file

The eRulings template at erulings.cbp.gov is the default path for tariff classification, marking, and country-of-origin requests. The template prompts for everything 19 CFR 177.2(b) requires; supplement with attachments where the form is too short.

1. Search CROSS for prior rulings

See the section above. Pull every ruling on the article, on competing subheadings, and on the key distinguishing features (material composition, function, end-use). The request should either cite a directly-supporting ruling or address why related rulings do not control.

2. Build the article description

Per 19 CFR 177.2(b)(2)(ii), the request must include "a full and complete description of the article" with chief use in the United States, commercial / common / technical designation, and material composition by weight and by volume. For a finished good, also describe the manufacturing process, country-by-country origin of key components, and any accessories or features that distinguish the article from conventional ones in the same heading.

Common omissions that delay rulings: power source specifications (wattage, voltage, fuel type) for any motor-driven article; mode of operation (electric, manual, pneumatic) for tools; net weight and dimensions for textile and apparel articles; intended end-user (consumer vs professional vs industrial) for dual-use products.

3. Argue the competing HTS subheadings

State the two or three subheadings that could plausibly apply. Identify which one you believe controls. Walk through:

• GRI 1 to 6 in order. Most classifications resolve at GRI 1 (terms of headings and section / chapter notes). Composite goods, sets, and mixtures need GRI 3.
• Relevant section and chapter notes. They are part of the legal text and frequently decide the case.
• Explanatory Notes to the Harmonized System, which CBP treats as persuasive authority.
• Prior CROSS rulings on similar merchandise; cite ruling numbers and quote the relevant reasoning.

4. Submit through eRulings

File at erulings.cbp.gov. The template asks for requester contact info, article description, proposed classification, and supporting documents. Upload product literature, photos, drawings, bills of materials, and any prior CROSS ruling PDFs cited in the request. CBP routes to NY or HQ based on the question type. You receive a confirmation email with a tracking reference.

5. Send a sample if requested

Per 19 CFR 177.2(b)(2)(ii), classification requests should be accompanied by a sample whenever possible. eRulings accepts photos and drawings electronically; if the National Import Specialist needs a physical sample, CBP requests one by separate communication and provides shipping instructions. The 30-day clock pauses until CBP has the sample. For perishable items, hazardous materials, or oversized articles, request a sample exemption upfront and provide alternative documentation.

6. Track and file the ruling

CBP issues the ruling letter electronically. NY rulings carry numbers like N123456; HQ rulings carry numbers like H123456. The ruling becomes searchable in CROSS within a few weeks. Save it in the import compliance manual. Cite the ruling number on entries covering the merchandise. Refresh whenever a material fact about the transaction changes (new supplier, new manufacturing process, different country of melt-and-pour for steel, different country of smelt-and-cast for aluminum).

If the issued ruling goes against you, options are: request reconsideration through HQ within a reasonable time, file a new ruling for a slightly different fact pattern (recognizing that CBP can deny on grounds of identicality), or accept the classification and file under it. A ruling that is wrong on its face is reviewable through HQ; a ruling that is correct on its facts but financially unfavorable is the answer.

What binding actually means

The legal force of a ruling letter is narrower than most first-time filers expect. Read 19 CFR 177.9 carefully before relying on a ruling.

Binding on CBP, for the named addressee, on the described transaction

Per 19 CFR 177.9(a), a ruling letter "represents the official position of the Customs Service" and is binding on all CBP personnel until modified or revoked. It applies to all unliquidated entries, and other transactions not yet finalized, on or after the ruling's date of issuance.

Per 19 CFR 177.9(b)(1), the binding effect attaches only when the imported transaction matches the ruling's described circumstances and the information furnished with the request remains accurate "in every material respect." If facts differ, the ruling does not apply to that entry. Specifically:

• Tariff classification rulings apply only to articles "identical to the sample submitted." Material differences, such as a different alloy, different net weight, or a different manufacturing process, void the ruling for that entry.
• Valuation rulings apply to "the same merchandise and like facts." Changing supplier, related-party status, or transaction structure can void applicability.
• Carrier rulings apply to "operations identical to those set forth."

Not binding on anyone except the addressee

Per 19 CFR 177.9(c), a ruling is "subject to modification or revocation by CBP without notice to any person" except the addressee. The regulation explicitly states "no other person should rely on the ruling letter" outside the described transaction. Other importers cite published rulings as persuasive authority but do not get binding protection from someone else's ruling.

Modification and revocation require notice

Per 19 USC 1502 and 19 USC 1625(c), CBP must publish a proposed modification or revocation in the Customs Bulletin, allow at least 30 days for public comment, and the change generally takes effect 60 days after publication of the final notice. The notice-and- comment process gives importers warning. Routine NY-to-HQ reconsiderations follow the same pathway when they would change the published outcome.

Statutory authority

The general appraisement and classification authority that underlies the ruling system is 19 USC 1502, which directs the Secretary of the Treasury to "establish and promulgate such rules and regulations not inconsistent with the law" as necessary for "uniformity of decision in construing the tariff schedules." 19 CFR Part 177 is the implementing regulation.

Worked example

A consumer-grade electric scooter from China. Two HTS subheadings could plausibly apply, and the duty stack on each is meaningfully different. This is a textbook binding-ruling situation.

Facts.

• Two-wheeled stand-on electric scooter, single rider, 350W brushless DC motor, top speed 15 mph, foldable aluminum frame.
• Country of origin: China (CN). Battery and motor sourced from Chinese suppliers; final assembly in China.
• Entry date: May 1, 2026.
• Annual import volume: ~5,000 units, declared value $400 per unit, $2,000,000 on the year.

The classification question

The two candidate HTS subheadings:

• 8703.80 (Other vehicles, with only electric motors for propulsion) covers passenger motor vehicles. The 10-digit breakout 8703.80.00.20 (new passenger vehicles) is the working classification. MFN base rate 2.5%, plus the China stack (Section 301 100% on electric vehicles per the September 2024 four-year-review increase, plus Section 232 steel content, plus MPF and HMF).
• 8711.60 (Motorcycles and cycles fitted with an auxiliary motor, with electric motor for propulsion). The 10-digit breakout 8711.60.00.90 (other) is the alternative. MFN base rate Free, plus the standard China stack on the non-EV-rated lines.

The 8711.60 subheading is the more accurate classification for a stand-on electric scooter (closer kin to a moped or e-bike than a motor vehicle), but the question turns on whether CBP treats a stand-on scooter as a "vehicle" under 8703.80 or a "cycle fitted with auxiliary motor" under 8711.60. Both readings are defensible. The duty cost of being wrong, however, is large.

What the duty stack looks like at each code

Run through the Tandom Calculator at the May 1, 2026 entry date. Per-unit duty on a $400 declared value:

The value-of-information call

The per-unit duty difference between the two subheadings is roughly $400 (driven by the 100% Section 301 rate on electric vehicles in 8703.80 vs the lower stack on 8711.60). Across 5,000 units a year, that is $2 million of annual exposure if CBP later disagrees with the importer's self-classification. A binding ruling that fixes the answer before the first entry costs roughly 30 to 60 days of National Import Specialist time and a well-drafted request. The math is unambiguous: file the request.

How the request reads

The strongest binding-ruling request walks through:

• Article description. Net weight, dimensions folded and unfolded, motor wattage, voltage, battery chemistry, top speed, intended user (recreational consumer), retail packaging.
• Why 8711.60 controls. GRI 1 applied to the heading text. Note 1 to Chapter 87 excludes articles that are not "vehicles" in the common meaning. The Explanatory Notes to 8711 explicitly cover "scooters" with small auxiliary motors. CROSS rulings on similar stand-on electric scooters classify under 8711.60.
• Why 8703.80 does not control. Heading 8703 covers "passenger motor vehicles" in the conventional sense (cars and similar). A stand-on scooter is not a "vehicle" within the GRI 1 reading of 8703 even though it has an electric motor. Cite competing CROSS rulings explicitly and explain why those facts do not match.
• What the importer is asking. A binding ruling that 8711.60.00.90 is the correct classification for the article as described.

With the ruling in hand, every entry of the same article carries the ruling number on the broker's filing notes. CBP field officers reading 19 CFR 177.9(a) apply 8711.60.00.90, not 8703.80.00.20, on every unliquidated entry until the ruling is modified or revoked.

Common pitfalls

The ruling fails or backfires when the request misses a key fact, the article changes, or the importer treats the ruling as a substitute for current trade-remedy analysis.

Filing on a transaction that is not eligible

Per 19 CFR 177.1(a)(2)(i), CBP will not issue a ruling on a transaction already arrived in the United States, pending before any CBP office, or in litigation. Binding rulings are a pre-importation tool. If the entry is already filed, the remedy is protest under 19 USC 1514 within 180 days of liquidation, or post-summary correction within the PSC window.

Treating a published ruling as binding on you

Per 19 CFR 177.9(c), a ruling binds only the named addressee. Citing someone else's ruling on similar merchandise is good practice but does not give you binding protection. If the financial exposure is meaningful, file your own.

Material fact changes that void the ruling

A ruling on Article X with motor type Y, battery Z, supplier A, and assembly country B is binding on Article X with those facts. Switching motor wattage, changing battery chemistry, adding a new function, or moving final assembly to a new country all potentially void the ruling for that entry. Re-file when the article changes materially.

Forgetting that the rate stack still attaches

The ruling locks in the classification, not the rate. A 2018 ruling that 7318.15 cap screws are correctly classified at 7318.15.80.66 is still good in 2026, but 2026's Section 232 steel rate (50%), Section 301 China rate (25%), and Section 122 surcharge attach at filing time. The ruling controls which subheading applies; current Chapter 99 layers, AD/CVD orders, and preference claims are evaluated at entry.

Inadequate competing-classification analysis

A request that names only the importer's preferred subheading and ignores the alternatives gives the National Import Specialist no way to test the reasoning. CBP rules against the path of least resistance when the request does not anticipate the obvious counter-argument. Address the competing subheading head-on; quote the relevant section / chapter note; cite the closest CROSS rulings on each side.

Skipping the sample

CBP almost always wants to examine a sample for tariff classification rulings. Submitting only photos delays the ruling. If a physical sample is impractical (perishable, hazardous, oversized), state the reason and provide alternative documentation up-front. The 30-day clock pauses until the National Import Specialist has what they need.

Not using CROSS to find precedent

A request that ignores prior rulings on similar merchandise looks unprepared. Search CROSS for the article description, for the candidate subheadings, and for the manufacturer. Quote the most relevant rulings. Distinguish the unfavorable ones explicitly.

Conflating binding rulings with informal advice

Verbal opinions from Import Specialists, customer-service email replies, and port-of-entry counter answers carry no binding effect under 19 CFR 177.1(d). They can be a useful first read but they do not protect against a different officer at a different port, or the same officer on a different day, reaching a different result. If the duty exposure justifies it, file a binding ruling.

Filing in the wrong forum

Tariff classification, marking, and country-of-origin requests go to the National Commodity Specialist Division (NY) at 201 Varick Street. Valuation and carrier-related requests go to Regulations and Rulings in Washington (HQ). eRulings handles the routing automatically; mailed requests to the wrong address get re-routed but the clock starts when the correct office receives them.

Treating a denied ruling as the end of the road

A negative ruling can be reconsidered through HQ. The importer can also file a new request after a material product change, or accept the classification and file under it. Drawback, protest, and post-summary correction remain available for entries that follow.

Glossary

Binding ruling

A written CBP determination under 19 CFR Part 177 that states the agency's official position on the tariff classification, country of origin, marking, or valuation of specific merchandise for a specific importer. Binding on CBP personnel for the described transaction until modified or revoked.

eRulings

CBP's online template for submitting binding-ruling requests electronically at erulings.cbp.gov. Default channel for tariff classification, marking, and country-of-origin requests.

CROSS

Customs Rulings Online Search System at rulings.cbp.gov. Public, searchable database of every NY and HQ ruling CBP has issued.

NY ruling

Ruling issued by the National Commodity Specialist Division at 201 Varick Street, New York. Identifier format N123456. Covers routine classification, origin, and marking questions. 30-day target under 19 CFR 177.2(c).

HQ ruling

Ruling issued by CBP Regulations and Rulings in Washington, DC. Identifier format H123456. Covers novel legal questions, valuation, drawback, FTA verifications, and reconsiderations of NY rulings. 90+ day issuance.

National Import Specialist (NIS)

CBP commodity expert at the National Commodity Specialist Division. Reviews binding-ruling requests in their commodity portfolio and drafts the ruling letter.

GRI

General Rules of Interpretation. The six rules at the beginning of the HTSUS that govern classification. GRI 1 (terms of headings and section / chapter notes) controls most classifications; GRI 2-6 handle composite goods, mixtures, and ambiguities.

Explanatory Notes

World Customs Organization commentary on the Harmonized System. Not binding law, but CBP and US courts treat them as persuasive authority on classification.

Identicality

The standard from 19 CFR 177.9(b)(2)(i) that a tariff classification ruling applies only to articles "identical to the sample submitted." Material differences void the binding effect.

Substantial transformation

The non-preferential country-of-origin test (name, character, and use) under 19 CFR 134.1. Frequent subject of binding-ruling requests for products assembled across multiple countries.

Customs Bulletin

CBP's weekly publication of decisions, including notices of proposed modification or revocation of binding rulings. The notice-and-comment vehicle under 19 USC 1625(c).

Protest

Post-importation administrative remedy under 19 USC 1514. Filed within 180 days of liquidation. The remedy when an entry was filed under what the importer believes is the wrong classification or rate, in lieu of a binding ruling (which only applies pre-importation).

Post-Summary Correction (PSC)

CBP-permitted electronic correction of an entry summary within 300 days of entry, before liquidation. Covers classification, valuation, and quantity changes; not all errors are PSC-eligible.

FAQ

High-intent questions brokers and importers ask about CBP binding rulings.