🧪 Water-Based Acrylic Copolymer (Primary Form) – Comprehensive HS Code & Tariff Analysis (2026)

🌐 HS Code Reference & Customs Clearance Guide | 2026 Latest Tariff Breakdown | Professional Clearance Strategy
📌 I. Product Definition & Classification: Do You Really Understand "Acrylic Copolymer"?

Water-based Acrylic Copolymer (Primary Form) refers to synthetic polymers formed from the copolymerization of acrylic monomers (such as methyl methacrylate, ethyl acrylate, etc.) with other comonomers (such as vinyl acetate, styrene, butadiene, etc.), primarily used in coatings, adhesives, sealants, and textiles. In international trade, it is mainly classified under Chapter 39 (Plastics and Articles Thereof).

The key distinction lies in the specific monomer composition and physical state (powder, flakes, granules, or paste). Since the input specifies "Water-based," it often refers to dispersions or pastes in primary forms, which may affect the specific subheading within Chapter 39. However, according to the provided , the classification focuses on copolymer type (Ethylene, Acrylic, Vinyl Acetate) rather than just the "water-based" aspect, as "water-based" usually refers to the final application form (e.g., latex) rather than the raw polymer classification itself. The provides specific HS codes for different copolymer types.

⚠️ Key Classification Point:
- The term "Water-based" typically describes the formulation (e.g., latex, emulsion) rather than the raw polymer HS code itself. Raw polymers are classified by their monomer structure.
- If the product is a raw copolymer in primary forms (powders, flakes, granules), it falls under specific subheadings based on the main monomer unit.
- The provides classifications for Ethylene Copolymers, Acrylic Copolymers, and Vinyl Acetate Copolymers, reflecting different chemical structures.

📦 II. HS Code Classification Details (2026 Latest Tariff Authority Comparison)

Based on the provided , here are the specific HS Codes and their corresponding tax rates and descriptions:

🔍 Key Reminder:
- "Water-based" is explicitly mentioned in 3906.90.20.00 and 3905.21.00.00 contexts.
- 3906.90.20.00 is described as "Waterborne Copolymers, Primary Form, belonging to Acrylic Polymer Category." This is the most direct match for "Water-Based Acrylic Copolymer."
- 3907.61.00.10 is for "Acrylic Copolymers, Primary Form," which is also a strong candidate if the "water-based" aspect is less critical than the chemical identity.
- 3905.21.00.00 is for "Vinyl Acetate Copolymers," which are often used in waterborne coatings but are chemically distinct from pure acrylics.

💰 III. 2026 Latest Tariff Rate Breakdown (Including Additional Taxes & Policy Surcharges)

✅ Applicable Country: USA (US)
✅ Country of Origin: China (CN)
✅ Effective Date: November 10, 2025 (Including subsequent imports)

🎯 1. 3901.90.55.01 & 3901.90.90.00 – Ethylene Copolymers, Primary Form

📌 Explanation:
- The 6.5% base tariff is the standard MFN rate for ethylene copolymers.
- The 25% USITC tariff is under Section 301 of the Trade Act.
- The 10% 122-Clause tariff is an additional surcharge for certain Chinese products.
- Total: 41.5%. This is a very high tariff, requiring careful cost analysis.

🎯 2. 3907.61.00.10 – Acrylic Copolymers, Primary Form

📌 Explanation:
- Acrylic copolymers are also subject to the same high tariff structure as ethylene copolymers.
- Total: 41.5%.

🎯 3. 3906.90.20.00 – Waterborne Copolymers, Primary Form (Acrylic Category)

📌 Explanation:
- This is the most precise match for "Water-Based Acrylic Copolymer" as described in the .
- The base tariff is slightly lower at 6.3%, but the additional tariffs remain the same.
- Total: 41.3%. This is 0.2% lower than the standard acrylic copolymer rate.

🎯 4. 3905.21.00.00 – Vinyl Acetate Copolymers, Primary Form

📌 Explanation:
- If the "water-based" copolymer is primarily based on Vinyl Acetate (common in latex paints), this HS code may apply.
- The base tariff is significantly lower at 4.0%, resulting in a lower total tariff of 39.0%.
- This is the most cost-effective option if the chemical composition allows.

🛠️ IV. Customs Clearance Practical Advice (Real-World Pitfall Avoidance Guide)

✅ 1. Required Documentation Checklist (All Required)

✅ 2. Declaration Tips (Key Mantras)

🔥 "Form Matters, Chemistry Determines, Name Accurate, Tax Saves!"

✅ 3. Special Situation Handling

🌍 V. Global Major Market Clearance Comparison (2026 Latest)

📌 Conclusion:
- The USA imposes the highest tariffs on acrylic copolymers from China (41.3% - 41.5%).
- China, EU, Australia, and Japan have significantly lower tariffs.
- Strategic Recommendation: Consider sourcing from or manufacturing in non-China countries if exporting to the USA to avoid high tariffs.

📌 VI. Common Errors & Pitfall Avoidance Guide (Lessons Learned)

❌ Error 1: Declaring "Water-Based Acrylic Copolymer" as "Paint" or "Coating"
👉 Consequence: Incorrect classification → Higher tax or shipment delay/rejection.

❌ Error 2: Confusing "Acrylic Copolymer" with "Vinyl Acetate Copolymer"
👉 Consequence: Tax difference of 2.5% (39.0% vs 41.5%) → Overpayment or underpayment penalties.

❌ Error 3: Not providing a Chemical Structure or CAS Number
👉 Consequence: Customs cannot verify classification → Request for additional information, delaying clearance.

❌ Error 4: Assuming "Water-Based" changes the HS Code fundamentally
👉 Consequence: HS codes are based on chemical composition, not application form. Ensure accurate monomer identification.

✅ Correct Practice:

"Waterborne Acrylic Copolymer Dispersion, Primary Form, CAS No. XXXXX-XX-X, Used for Coatings, Model XYZ"

🎯 VII. Conclusion: Professional Declaration, Time-Saving, Cost-Reducing!

🎯 Remember the Mantra:

🔹 "Chemistry is King, Form Follows, USA Tariff High, Origin Matters!"
🔹 "HS Code Decides Fate, Tax Difference 2.5%, Declaration One Step, Savings Hundreds of Dollars!"

📌 Tips:
- If your copolymer is Vinyl Acetate-based, use 3905.21.00.00 for a lower tariff of 39.0%.
- If it is Acrylic-based, use 3906.90.20.00 for 41.3% or 3907.61.00.10 for 41.5%.
- Pre-shipment with detailed technical documentation is crucial to avoid disputes.

📣 Immediate Action:

📞 Contact a professional customs broker + Provide Product Specs + Apply for Advance Ruling
🚀 Ensure your Water-Based Acrylic Copolymer clears customs smoothly, efficiently, and profitably!

✨ Professional Clearance Starts with Accurate Classification!
💼 Every cent of your cost deserves precise calculation!