3818.00.00.40Round shaped, as described in statistical note 2 to this chapter
HTS Code 3818.00.00.40 covers any article best defined as Products of the Chemical or Allied IndustriesMiscellaneous chemical productsChemical elements doped for use in electronics, in the form of discs, wafers or similar forms; chemical compounds doped for use in electronicsMonocrystalline silicon wafers, doped:Round (circular) shaped, as described in statistical note 2 to this chapter in the Harmonized Tariff Schedule.
Estimated Duty on 3818.00.00.40
$10,000.00 by ocean, entered Oct 22, 2026
- Total duty
- 50%
- $5,000.00 on this shipment
- Fees
- 0.47%
- MPF + HMF · $47.14
- Duty + fees
- 50.47%
- Payable to CBP
- Landed cost
- $15,047.14
- On $10,000.00 customs value
- Section 301 – China50%
- Customs fees0.47%
5 exemptions could lower this
Check them against your real shipment details.
Base Duty Rates for 3818.00.00.40
Set at 3818.00.00 in the Harmonized Tariff Schedule
- General Rate of Duty
- Free
- Special Rate of Duty
- —
- Column 2 (Non-NTR)
- 25%
- Units of Quantity
- kg
- China50%
- Mexico0%
- Canada0%
- Vietnam0%
- Germany0%
Tariff updates
Recent US tariff actions that name 3818.00.00.40 or its heading.
- Sep 24, 2026 · CBP guidanceBIS sets anti-stockpiling import limits on polysilicon products ahead of Section 232 tariffs
Get Tariff News Alerts
Every new US tariff action in plain English, with the official documents behind it.
US Import Duty on HTS 3818.00.00.40 by Country of Origin
As of Oct 22, 2026, US imports of round shaped, as described in statistical note 2 to this chapter (HTS 3818.00.00.40) from China pay 50% in duties: a duty-free base rate plus Section 301 – China (50%). Of the 20 largest sources of US imports, the lowest total is 0%, from Mexico, Canada and 17 more.
| Country of origin | Base rate | Additional tariffs | Total duty |
|---|---|---|---|
| China | Free |
| 50% |
| Mexico | Free | None | 0% |
| Canada | Free | None | 0% |
| Vietnam | Free | None | 0% |
| Germany | Free | None | 0% |
| Japan | Free | None | 0% |
| South Korea | Free | None | 0% |
| Taiwan | Free | None | 0% |
| India | Free | None | 0% |
| Ireland | Free | None | 0% |
| Italy | Free | None | 0% |
| Switzerland | Free | None | 0% |
| Thailand | Free | None | 0% |
| Malaysia | Free | None | 0% |
| United Kingdom | Free | None | 0% |
| France | Free | None | 0% |
| Indonesia | Free | None | 0% |
| Brazil | Free | None | 0% |
| Bangladesh | Free | None | 0% |
| Cambodia | Free | None | 0% |
Duty from each country, in words
- As of Oct 22, 2026, US imports of round shaped, as described in statistical note 2 to this chapter (HTS 3818.00.00.40) from China pay 50% in duties: a duty-free base rate plus Section 301 – China (50%).
- As of Oct 22, 2026, US imports of round shaped, as described in statistical note 2 to this chapter (HTS 3818.00.00.40) from Mexico pay a duty-free base rate, with no additional tariffs.
- As of Oct 22, 2026, US imports of round shaped, as described in statistical note 2 to this chapter (HTS 3818.00.00.40) from Canada pay a duty-free base rate, with no additional tariffs.
- As of Oct 22, 2026, US imports of round shaped, as described in statistical note 2 to this chapter (HTS 3818.00.00.40) from Vietnam pay a duty-free base rate, with no additional tariffs.
- As of Oct 22, 2026, US imports of round shaped, as described in statistical note 2 to this chapter (HTS 3818.00.00.40) from Germany pay a duty-free base rate, with no additional tariffs.
- As of Oct 22, 2026, US imports of round shaped, as described in statistical note 2 to this chapter (HTS 3818.00.00.40) from Japan pay a duty-free base rate, with no additional tariffs.
- As of Oct 22, 2026, US imports of round shaped, as described in statistical note 2 to this chapter (HTS 3818.00.00.40) from South Korea pay a duty-free base rate, with no additional tariffs.
- As of Oct 22, 2026, US imports of round shaped, as described in statistical note 2 to this chapter (HTS 3818.00.00.40) from Taiwan pay a duty-free base rate, with no additional tariffs.
- As of Oct 22, 2026, US imports of round shaped, as described in statistical note 2 to this chapter (HTS 3818.00.00.40) from India pay a duty-free base rate, with no additional tariffs.
- As of Oct 22, 2026, US imports of round shaped, as described in statistical note 2 to this chapter (HTS 3818.00.00.40) from Ireland pay a duty-free base rate, with no additional tariffs.
- As of Oct 22, 2026, US imports of round shaped, as described in statistical note 2 to this chapter (HTS 3818.00.00.40) from Italy pay a duty-free base rate, with no additional tariffs.
- As of Oct 22, 2026, US imports of round shaped, as described in statistical note 2 to this chapter (HTS 3818.00.00.40) from Switzerland pay a duty-free base rate, with no additional tariffs.
- As of Oct 22, 2026, US imports of round shaped, as described in statistical note 2 to this chapter (HTS 3818.00.00.40) from Thailand pay a duty-free base rate, with no additional tariffs.
- As of Oct 22, 2026, US imports of round shaped, as described in statistical note 2 to this chapter (HTS 3818.00.00.40) from Malaysia pay a duty-free base rate, with no additional tariffs.
- As of Oct 22, 2026, US imports of round shaped, as described in statistical note 2 to this chapter (HTS 3818.00.00.40) from United Kingdom pay a duty-free base rate, with no additional tariffs.
- As of Oct 22, 2026, US imports of round shaped, as described in statistical note 2 to this chapter (HTS 3818.00.00.40) from France pay a duty-free base rate, with no additional tariffs.
- As of Oct 22, 2026, US imports of round shaped, as described in statistical note 2 to this chapter (HTS 3818.00.00.40) from Indonesia pay a duty-free base rate, with no additional tariffs.
- As of Oct 22, 2026, US imports of round shaped, as described in statistical note 2 to this chapter (HTS 3818.00.00.40) from Brazil pay a duty-free base rate, with no additional tariffs.
- As of Oct 22, 2026, US imports of round shaped, as described in statistical note 2 to this chapter (HTS 3818.00.00.40) from Bangladesh pay a duty-free base rate, with no additional tariffs.
- As of Oct 22, 2026, US imports of round shaped, as described in statistical note 2 to this chapter (HTS 3818.00.00.40) from Cambodia pay a duty-free base rate, with no additional tariffs.
Duties on goods entered Oct 22, 2026 at the general rate (Column 2 where it applies), with tariff data verified through 2026 HTS Revision 20. Totals are before customs fees (MPF, HMF) and any antidumping or countervailing duties. Some tariffs and exemptions depend on details such as metal content or end use, which the calculator asks about. See US tariffs for every country.
Calculate Duty for Your ShipmentKnow the moment an update hits 3818.00.00.40
Add it, with your country of origin, to the Tariff Tracker, free for 14 days. When a new tariff action affects it, you hear about it first, with exactly what changes.
- Every new US tariff action checked against your imports, every 15 minutes
- An alert with the rate before and after, by email, Slack or Teams
- Impact checks: see exactly how any tariff action affects each import
- AD/CVD alerts when an import may fall under a case
New tariff action affects 1 of your imports
Its rate today, if a new 10% tariff were added
Top Origins: Countries the US Imports HTS 3818.00.00.40 From
In 2025 the US imported $1.7B of round shaped, as described in statistical note 2 to this chapter (HTS 3818.00.00 and related codes), up 1173% on 2024, mostly from Japan (41%), Taiwan (15%) and South Korea (13%). Each country's total duty today is shown beside its imports.
| Country of origin | US imports, 2025 | Share | vs 2024 | Total duty today |
|---|---|---|---|---|
| Japan | $690M | 41% | 4388% | 0% |
| Taiwan | $249M | 15% | 361% | 0% |
| South Korea | $222M | 13% | 2686% | 0% |
| Germany | $120M | 7% | 724% | 0% |
| China | $81M | 5% | New | 50% |
| France | $74M | 4% | 200% | 0% |
| Singapore | $52M | 3% | 17630% | 0% |
| Malaysia | $41M | 2% | 7492% | 0% |
| Italy | $33M | 2% | 521% | 0% |
| Finland | $21M | 1% | 371% | 0% |
Source: U.S. Census Bureau, general imports (8-digit group, as Census has no figures for this exact line). Duty on a $10,000 ocean shipment entered today, before customs fees. This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.
Relevant HTS Notes
Official USITC notes that may affect classification under HTS 3818.00.00.40.
Related CROSS Rulings for HTS 3818.00.00.40
CBP classification rulings related to 3818.00.00.40. Open a ruling to read how Customs classified a similar product.
No rulings found
No CROSS classification rulings were found for HTS code "3818.00.00".
What does HTS code 3818.00.00.40 cover?
HTS code 3818.00.00.40 covers round shaped, as described in statistical note 2 to this chapter (Round (circular) shaped, as described in statistical note 2 to this chapter), classified under Chapter 38 (Miscellaneous chemical products) in the US Harmonized Tariff Schedule. The general duty rate is Free.
What is the duty rate for HTS 3818.00.00.40?
The general (Column 1) rate of duty for HTS 3818.00.00.40 is Free. The Column 2 rate, for countries without normal trade relations, is 25%. Additional Chapter 99 tariffs, such as Section 301 and Section 232, can apply on top depending on the country of origin.
What is the US tariff on round shaped, as described in statistical note 2 to this chapter (HTS 3818.00.00.40) from China?
As of Oct 22, 2026, US imports of round shaped, as described in statistical note 2 to this chapter (HTS 3818.00.00.40) from China pay 50% in duties: a duty-free base rate plus Section 301 – China (50%).
What is the US tariff on round shaped, as described in statistical note 2 to this chapter (HTS 3818.00.00.40) from Vietnam?
As of Oct 22, 2026, US imports of round shaped, as described in statistical note 2 to this chapter (HTS 3818.00.00.40) from Vietnam pay a duty-free base rate, with no additional tariffs.
What is the US tariff on round shaped, as described in statistical note 2 to this chapter (HTS 3818.00.00.40) from Mexico?
As of Oct 22, 2026, US imports of round shaped, as described in statistical note 2 to this chapter (HTS 3818.00.00.40) from Mexico pay a duty-free base rate, with no additional tariffs.
Which country has the lowest US duty on HTS 3818.00.00.40?
Of the 20 largest sources of US imports, the lowest total duty on HTS 3818.00.00.40 is 0%, from Mexico, Canada and 17 more, as of the tariffs in effect on 2026-10-22.
The Audit-Ready Classifications Playbook
Learn how to create HTS classifications that reduce import risk and defend profits — faster than ever.
What's inside
- Step-by-step classification methodology
- Audit defense strategies & documentation templates
- Common classification mistakes to avoid
- GRI application guide with real examples
- 7 FREE tools and templates to boost your classifications