casemark/certificate-of-origin
skills/legal/certificate-of-origin/SKILL.md
Drafts USMCA/NAFTA Certificates of Origin for preferential tariff treatment on US-Mexico-Canada goods. Verifies origin criteria, HS classifications, and regional value content. Use when preparing trade certificates, customs origin documentation, duty preference claims, or cross-border shipment certifications.
$ install --global
skillsauthnpx skillsauth add casemark/skills certificate-of-originInstall this skill globally with one command. Works with Claude Code, Cursor, and Windsurf.
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Last scanned: May 25, 2026, 3:31 AM24.1s1 file scanned
SKILL.md
- name:
- certificate-of-origin
- language:
- en
- description:
- Drafts USMCA/NAFTA Certificates of Origin for preferential tariff treatment on US-Mexico-Canada goods. Verifies origin criteria, HS classifications, and regional value content. Use when preparing trade certificates, customs origin documentation, duty preference claims, or cross-border shipment certifications.
USMCA/NAFTA Certificate of Origin
Generates legally compliant Certificates of Origin certifying goods qualify for preferential tariff treatment under USMCA (effective July 1, 2020) or legacy NAFTA.
Prerequisites
- Commercial invoices and bills of materials for goods being certified
- Production records (material sourcing, manufacturing location, supplier docs)
- Party information: legal names, addresses, tax IDs for exporter, producer, importer
- HS tariff classification (minimum 6-digit; 8- or 10-digit if importing country requires)
- Any prior origin determinations or tariff rulings for same goods
Quick Start
- Confirm agreement: USMCA for shipments on/after July 1, 2020; NAFTA for earlier
- Collect exporter, producer, and importer details
- Describe goods with HS codes and determine origin criterion (A/B/C/D)
- Draft certification statement with legal declarations
- Generate certificate with signature block
Core Workflow
1. Determine Agreement and Coverage Type
| Shipment Date | Agreement | |---|---| | Before July 1, 2020 | NAFTA (Ch. 4-5) | | On or after July 1, 2020 | USMCA (Ch. 4-5) |
Confirm single shipment or blanket (max 12 months from signature, USMCA Art. 5.2).
2. Collect Party Information
For exporter, producer, and importer: full legal business name, complete physical address, and tax ID / business registration number.
Special cases:
| Scenario | Handling | |---|---| | Exporter = Producer | State "Same" in producer field | | Producer confidential | "Available to Customs upon request" (Art. 5.2); note verification risk | | Importer unknown | "Unknown" / "Various"; may need updating before preference claim |
3. Describe Goods
Each good requires: commercial name, technical specs (model/part numbers), material composition, HS classification (6+ digits matching entry docs), and intended use. Never use vague descriptions ("parts," "merchandise").
4. Determine Origin Criterion
| Criterion | Meaning | |---|---| | A | Wholly obtained/produced entirely in US/MX/CA — zero third-country content | | B | Produced entirely in US/MX/CA using only originating materials | | C | Produced using non-originating materials satisfying product-specific rules (tariff shift, RVC) | | D | Automotive goods meeting enhanced USMCA auto rules |
Regional Value Content (when required) — calculate via either method:
- Transaction value: RVC = ((TV − VNM) / TV) × 100
- Net cost: RVC = ((NC − VNM) / NC) × 100
Retain calculation worksheets. For tariff shift analysis, confirm non-originating materials classify in a different heading/subheading than the finished good. Flag sector-specific rules for automotive, textiles/apparel, and agricultural goods.
5. Draft Certification Statement
Must include:
- Affirmation goods qualify as originating under USMCA Ch. 4-5 (or NAFTA Ch. 4-5)
- Basis of certifier's knowledge (direct examination, production records, company role)
- Acknowledgment of verification rights (written requests, questionnaires, facility visits)
- Record retention: 5 years from signature (USMCA) or importation (NAFTA)
- 30-day response obligation for verification requests
- Penalties awareness: civil penalties, criminal prosecution (18 U.S.C. § 1001 [VERIFY] or MX/CA equivalents), MFN duty liability plus interest, customs privilege suspension
6. Signature Block
Include: signatory name, title/position (must have binding authority), full legal company name, date (unambiguous format), phone (with country code), and email.
If exporter certifies based on producer-supplied information, obtain and retain written origin statement from producer.
Output Structure
Generate certificate sections in order:
- Header — Agreement identifier, blanket vs. single shipment, coverage period
- Exporter block — Name, address, tax ID
- Producer block — Name, address, tax ID (or confidentiality notation)
- Importer block — Name, address, tax ID (or "Unknown")
- Goods table — Description, HS number, origin criterion, country of origin per line item
- Certification statement — Full legal declaration
- Signature block
Append a compliance memo: basis for origin determination, supporting docs to maintain, risk flags (marginal RVC, ambiguous tariff shifts, sourcing changes), and monitoring recommendations.
Pitfalls and Checks
- Never mix NAFTA/USMCA frameworks — verify by shipment date
- Flag RVC within 5% of minimum threshold as high-risk
- Mark uncertain HS classifications for client review before submission
- Blanket certificates must not exceed 12-month coverage
- Cross-check consistency across certificate, commercial invoice, and entry docs
- Use "N/A" or "Unknown" only where legitimately unavailable
- Do not provide final legal sign-off — flag for attorney review where origin qualification is marginal
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