Tandom
About
Sign inCreate a free account →
Tandom

The building blocks of global trade.

hello@tandom.ai

Proud to partner with

Microsoft for Startups

NVIDIA

Inception Program

Products

  • Tariff Calculator
  • AD/CVD Intelligence
  • HTS Classification
  • Document Intelligence
  • Entry Filing
  • Excel Plugin
  • Email Plugin

Catalogs

  • AD/CVD Catalog
  • HTS Catalog
  • Pending Investigations Directory
  • Rate Change Feed

Developers

  • API
  • AI Agent Workflows
  • MCP Connector
  • API Reference
  • API Pricing
  • API Changelog

Resources

  • Resource Center
  • Guides
  • Roadmap

Company & Legal

  • About
  • Privacy Policy
  • Terms of Service
  • Acceptable Use

© 2026 Fintora Technologies, Inc. d/b/a Tandom. All rights reserved.

Plain-English explanationMessage bodyFrequently asked questionsLearn more
  1. AD/CVD Catalog
  2. ›
  3. CSMS
  4. ›
  5. CSMS 45300978
CSMS 45300978·Trade policy·December 28, 2020·View on csms.cbp.gov ↗

U.S. Customs and Border Protection (CBP) 2021 Q1 Absolute Quota Aluminum Section 232 Quota Limits

Plain-English explanation

CSMS 45300978 is a U.S. Customs and Border Protection (CBP) Cargo Systems Messaging Service bulletin (trade policy), published on December 28, 2020. It carries the official CBP guidance brokers and importers must follow for the topic — "U.S. Customs and Border Protection (CBP) 2021 Q1 Absolute Quota Aluminum Section 232 Quota Limits". CSMS messages are the operational layer between Commerce determinations and at-the-border collections: when Commerce publishes a new rate, scope ruling, or instruction, CBP turns it into a CSMS that ACE/ACS systems and brokers act on.

Message body

Full text as published by U.S. Customs and Border Protection

CSMS #45300978 - U.S. Customs and Border Protection (CBP) 2021 Q1 Absolute Quota Aluminum Section 232 Quota Limits U.S. Customs and Border Protection sent this bulletin at 12/28/2020 04:09 PM EST   Cargo Systems Messaging Service CSMS #45300978 - U.S. Customs and Border Protection (CBP) 2021 Q1 Absolute Quota Aluminum Section 232 Quota Limits The 2021 Section 232 Absolute Quota Aluminum threshold is announced on Quota Bulletin QB 21-701 at: https://www.cbp.gov/trade/quota/bulletins .  All entries submitted prior to January 4, 2021 will not be eligible for Q1 quota.  The Q1 period is January 1, 2021 through March 31, 2021. Reminder:  Effective December 29, 2020 per FRN 2020-27110 all entries for General Approved Exclusion (GAE) HTS must utilize 9903.85.11.  The list of GAE HTS numbers can be found at the bottom of the Quota Bulletin. In alignment with Presidential Proclamation 9740 of April 30, 2018 and Presidential Proclamation 9759 of May 31, 2018:  Quantitative limitations applicable to imports of aluminum products under HTS subheadings 9903.85.05 through 9903.85.06 for the quota year are limited on a quarterly basis. As of June 1, 2018, CBP implemented absolute quota processing functionality in ACE.  Absolute quota is processed on a daily basis, Monday to Friday (excluding holidays), and cargo release of shipments subject to the absolute quota will be withheld until the absolute quota is processed and quota amounts are allocated.  In order for shipments to be processed for absolute quota on the same day, the entry summary must be filed, entry summary payment date must be on file or scheduled for a future statement, and the conveyance arrived by 4:30 pm in the port of unlading’s local time zone.  The official hours for quota processing are established by 19 CFR 132.3. All entries submitted prior to 8:30 am ET and on January 4, 2021 will be counted in the first opening at 8:30 am ET.  If the accepted entry totals for any HTS submitted prior to the first opening exceed the limit of that HTS they will be prorated. Trade can track quota status by viewing the weekly quota commodity status report found at www.cbp.gov/trade/quota .   Update your subscriptions, modify your password or e-mail address, or stop subscriptions at any time on your Subscriber Preferences Page . You will need to use your e-mail address to log in. If you have questions or problems with the subscription service, please contact subscriberhelp.govdelivery.com . This service is provided to you at no charge by U.S. Customs and Border Protection . Privacy Policy | GovDelivery is providing this information on behalf of U.S. Department of Homeland Security, and may not use the information for any other purposes. Powered by Privacy Policy | Cookie Statement | Help

Frequently asked questions

What is CSMS 45300978?

CSMS 45300978 is a U.S. Customs and Border Protection (CBP) Cargo Systems Messaging Service bulletin titled "U.S. Customs and Border Protection (CBP) 2021 Q1 Absolute Quota Aluminum Section 232 Quota Limits". CSMS bulletins are the operational instructions CBP issues to brokers, importers, and ACE filers covering rate changes, system updates, scope guidance, and other day-to-day customs-operations changes.

When was CSMS 45300978 published?

CBP published CSMS 45300978 on December 28, 2020. The bulletin's instructions are typically operative as of the publication date unless the body specifies a different effective date.

Is the CBP CSMS the legally binding instruction?

Yes — for at-the-border filing and entry collection. CSMS messages translate Commerce's Federal Register determinations into operational CBP instructions that ACE/ACS systems and brokers execute. The Federal Register notice is the underlying legal authority; the CSMS is the operational implementation. Both should be read together when reconciling a rate or scope change.

Learn more

Tandom guides relevant to CBP CSMS messages

Subscribe to and triage CBP CSMS messages

How to subscribe to CBP Cargo Systems Messaging Service and triage the messages that change broker filing behavior, without losing the ones that matter.

Open resource →

Real-time alerts when a CSMS message changes a duty rate

Set up alerts when a CBP CSMS message changes a duty rate on an HTS code you depend on. Built for brokers, forwarders, and importer compliance teams.

Open resource →

Find the right manufacturer or exporter rate in an AD/CVD order

Cash deposit cascade, separate rates, all-others, and PRC-wide rates. Worked example on case A-570-910 (galvanized welded steel pipe from China) with three exporter-specific rates.

Open resource →

Determine if a product is in scope of an AD/CVD order

Scope text is authoritative; the HTS list is illustrative. Read scope, find past rulings, and file a 19 CFR 351.225 inquiry. Worked example on case A-570-106 (wooden cabinets from China).

Open resource →

Bulk-classify SKU descriptions with the Tandom HTS Classifier API

Run thousands of product descriptions through HTS classification, score the confidence, and triage borderline rows. Public search endpoint plus the closed-beta three-layer Classifier.

Open resource →

Check AD/CVD exposure by HTS code

A practical workflow for checking antidumping and countervailing duty exposure on a US entry. For brokers and ops teams who need the answer before filing.

Open resource →