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) | Set per subheading |
|---|---|
| Special | — |
| Other (Column 2) | — |
Official source: USITC Harmonized Tariff Schedule. Duty at entry is determined by US Customs and Border Protection (CBP). AD/CVD watch signals are surfaced, but cash deposit rates and product-specific exclusions still require separate review.
Chapter 99 overlaysChapter 99 overlays
No Chapter 99 overlays are currently linked to this HS code.
§ DUTY BREAKDOWNDuty breakdown
Duty ledger below is calculated on a $10,000 customs value. Fees, AD/CVD, and exclusions are not included here.
| Duty breakdown | Rate | Amount | Source |
|---|---|---|---|
| Base dutyBase | — | — | Set per subheading |
| Chapter 99 · Section 301 forced-labor action (China)Chapter 99 | 12.5% | $1,250.00 | 9903.05.312026-07-24 |
§ ORIGIN COMPARISONAlternative origin comparison
This compares tariff-only outcomes for the same HTS across origin countries. Freight, AD/CVD rate amounts, exclusions, broker fees, and relocation cost are not included — but active AD/CVD order counts per country are flagged below.
| Origin | Total rate | Duty @ $10,000 | Delta vs baseline | AD/CVD orders |
|---|---|---|---|---|
| China (CN) | 12.5% | $1,250.00 | — | — |
| Vietnam (VN) | 0% | $0.00 | -$1,250.00 | — |
| Mexico (MX) | 0% | $0.00 | -$1,250.00 | — |
| India (IN) | 0% | $0.00 | -$1,250.00 | — |
| South Korea (KR) | 0% | $0.00 | -$1,250.00 | — |
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% | 12.5% | 12.5% | $1,250.00 |
| 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 ENTRIESAll subheadings under HTS 8421
Direct children of HTS heading 8421. Drill in to see actual column rates.
- 8421.11.00.00Cream separators
- 8421.12.00.00Clothes-dryers
- 8421.19.00.00Other
- 8421.21.00.00For filtering or purifying water
- 8421.22.00.00For filtering or purifying beverages other than water
- 8421.23.00.00Oil or fuel filters for internal combustion engines
- 8421.29.00Other
- 8421.31.00.00Intake air filters for internal combustion engines
- 8421.32.00.00Catalytic converters or particulate filters, whether or not combined, for purifying or filtering exhaust gases from internal combustion engines
- 8421.39.01Other
- 8421.91Of centrifuges, including centrifugal dryers
- 8421.99.01Other
§ RECENT CHANGESRecent Federal Register actions on Chapter 84
Last 3 Federal Register notices that referenced an HTS code under Chapter 84. See the Changes timeline for the full list.
§ FAQFrequently asked
- What is the general MFN duty rate for HTS 8421?
- HTS 8421 (Centrifuges, including centrifugal dryers; filtering or purifying machinery and apparatus, for liquids or gases; parts thereof) is a heading-level row and carries no MFN rate of its own; the base rate is set on each subheading beneath it (see the subheading list on this page). This applies to imports from countries with normal trade relations status. For origins like China, additional Section 301, IEEPA, and reciprocal duties may stack on top of this base rate. Final duty is determined at CBP entry.
- Are there active Chapter 99 tariff overlays on HTS 8421?
- Yes. For China origin, 1 active Chapter 99 rule(s) currently stack on HTS 8421: Section 301 forced-labor action (China). Overlays apply by country of origin and effective date, and a single shipment can be subject to several at once — verify the current list against your classification before ordering.
- What's the total US import duty for HTS 8421 from China today?
- HTS 8421 is a heading-level row whose MFN base rate is set per subheading, so this page cannot state a complete total. The Chapter 99 overlays currently in force for China origin alone add about $1250.00 on a $10,000 customs value (~12.50%); the full duty is the subheading's MFN rate plus that stack. Actual duty is determined by CBP at entry based on classification, valuation, and rules in effect on the entry date.
- When was HTS 8421 last updated on Duty?
- The base HTS data on this page was last refreshed on September 8, 2026 (USITC release 2026HTSRev18). Chapter 99 overlays, AD/CVD case status, and Federal Register notices are synced daily; effective dates follow the source feeds. If you spot stale data, use the “Report a data issue” link on this page.