VOL. I · WASHINGTON TARIFF DECISION ASSISTANT · April 26, 2026
§ HTS 8541.21.00.40 · US import duty

Unmounted chips, dice and wafers

HTS 8541.21.00.40 covers Unmounted chips, dice and wafers, classified under HS chapter 85. The MFN (general column) base duty is Free. 1 active Chapter 99 overlay apply: 9903.91.05 (other +50%). Imports from China typically incur the Section 301 / IEEPA additional duties listed above; imports from Vietnam, Mexico, India and other origins generally pay only the MFN base unless an origin-specific overlay applies. Antidumping (AD) and countervailing duty (CVD) cases are NOT evaluated on this page — check ADCVD orders separately. Source: USITC HTS release 2026HTSRev6. CBP determines the binding classification and duty at entry.

Semiconductor devices (for example, diodes, transistors, semiconductor-based transducers); photosensitive semiconductor devices, including photovoltaic cells whether or not assembled in modules or made up into panels; light-emitting diodes (LED), whether or not assembled with other light-emitting diodes (LED); mounted piezo-electric crystals; parts thereof: · Diodes, other than photosensitive or light-emitting diodes (LED) · With a dissipation rate of less than 1 W · Unmounted chips, dice and wafers
Open interactive calculator
HTS CODE
8541.21.00.40
General (MFN)Free
Other (Column 2)35%
§99 overlays1

Base tariff columnsBase tariff columns

Column rates from the USITC HTS export. The column that applies depends on origin and trade-program eligibility.

General (MFN)Free
Special—
Other (Column 2)35%
UnitsNo.

Official source: USITC Harmonized Tariff Schedule. Duty at entry is determined by US Customs and Border Protection (CBP). AD/CVD and product-specific exclusions are not evaluated by default.

Chapter 99 overlaysChapter 99 overlays

  • 9903.91.05 other +50% active
    Effective with respect to entries on or after January 1, 2025, articles the product of China, as provided for in subdivision (f) of U.S. note 31 to this subchapter

Sample duty by originSample duty by origin

Illustrative calculation at USD 10,000 customs value, standard (non-preferential) claim. Chapter 99 additional duties applied where status is active.

Origin Base rate Chapter 99 Total rate Duty (USD)
China (CN) 0% 50% 50% $5,000.00
Vietnam (VN) 0% 0% 0% $0.00
Mexico (MX) 0% 0% 0% $0.00
India (IN) 0% 0% 0% $0.00
South Korea (KR) 0% 0% 0% $0.00

§ RELATED ENTRIESRelated HS codes in the same chapter

Adjacent lines under the same HTS chapter. Pick the most specific match for your product.

§ FAQFrequently asked questions

What is the US import duty for HTS 8541.21.00.40?
HTS 8541.21.00.40 (Unmounted chips, dice and wafers) has a general (MFN) column rate of Free, plus 1 active Chapter 99 overlay(s) that may apply depending on origin (for example, Section 301 or IEEPA actions). Final duty is determined by CBP at entry.
Which Chapter 99 rules are currently linked to HTS 8541.21.00.40?
The following rules are attached in our snapshot: 9903.91.05 (other) — other. Each rule has its own country scope and effective dates — check the rule detail on this page for the additional rate and status before applying it to your shipment.
How do I check if HTS 8541.21.00.40 qualifies for a Section 301 exclusion?
Most machinery (Chapter 84) and electronics (Chapter 85) lines from China are covered by Section 301 List 1–4 overlays. USTR publishes exclusions with specific product descriptions — matching by HTS code alone is not sufficient, the product must meet the exclusion description. Check USTR exclusion databases and the latest Federal Register notices.
Why is HTS 8541.21.00.40 a 10-digit statistical suffix?
The 10-digit format is used for CBP entry reporting to track quantity / form; actual column rates are typically set at the 6- or 8-digit parent subheading, and this page inherits those rates. Use the Chapter breadcrumb above to see sibling tariff lines within the same chapter. This page is marked noindex because the duty-relevant signal lives at the parent level.
Is this the binding duty determination?
No. This page is a reference built on USITC + Federal Register open data. The binding classification and duty amount is determined by CBP at entry. AD/CVD and product-specific exclusions require separate review.