8439.91—Of machinery for making pulp of fibrous cellulosic materialsGeneral duty rate
Free
Across 2 10-digit lines
Coverage on this page
HTS 8439.91 is a 6-digit subheading of the U.S. Harmonized Tariff Schedule covering Of machinery for making pulp of fibrous cellulosic materials. It sits in Chapter 84: Nuclear reactors, boilers, machinery and mechanical appliances; parts thereof, Section XVI: Machinery and Mechanical Appliances; Electrical Equipment; Parts Thereof; Sound Recorders and Reproducers, Television Image and Sound Recorders and Reproducers, and Parts and Accessories of Such Articles and rolls up 2 10-digit statistical lines, all with a general duty rate of Free. 2 Chapter 99 tariff modifications currently touch one or more lines under this subheading.
Pick a line to view full rate detail and compute landed duty
Chapter 99 overlays touching one or more lines under 8439.91
| Code | Authority | Rate |
|---|---|---|
| 9903.88.01 | section_301 | The duty provided in the applicable subheading plus 25% |
| 9903.88.06 | section_301 | The duty provided in the applicable subheading |
HTS 8439.91 is a 6-digit subheading of the U.S. Harmonized Tariff Schedule covering Of machinery for making pulp of fibrous cellulosic materials. It belongs to Chapter 84 and rolls up 2 10-digit statistical lines that brokers actually file at entry.
Every 10-digit line under HTS 8439.91 carries a general (Column 1) duty rate of Free. Section 301, Section 232, and AD/CVD overlays may stack on top of this rate at the per-line level — open a specific 10-digit code to see its complete tariff stack.
U.S. Customs requires entries to be filed at the 10-digit statistical level — the broader subheading HTS 8439.91 is not directly fileable. Match your product description to the most specific 10-digit line in the list on this page; if multiple lines could apply, the General Rules of Interpretation (GRIs) and chapter notes determine which one governs.
No active AD/CVD (antidumping or countervailing duty) orders currently flag any line under HTS 8439.91 in Tandom's catalog. Tandom monitors Federal Register notices daily; any new orders will appear here within 24h of publication.
Tandom guides relevant to this code
What the 178 active Section 301 exclusions cover, how to claim 9903.88.69 on an entry, and what changes when the November 10, 2026 deadline passes.
Open resource
How to read, order, and report Chapter 99 HTS codes alongside the base classification on a US entry summary in 2026. The full stacking ladder for brokers and compliance teams.
Open resource
A working guide to the inputs, the layers, and the math behind a US entry summary in 2026. Written for brokers, forwarders, and importer compliance teams.
Open resource
Drop the Tandom Duty Calculator API into a TMS, broker software, or in-house ERP. Code samples, the response shape, and ACE reporting order, in 2026.
Open resource
What changed April 6, 2026, what stayed the same, and how to file a steel, aluminum, or copper line in ACE without leaving duty exposure on the table.
Open resource
Where trade compliance APIs fit in a broker's filing pipeline: HTS classification, duty calculation, AD/CVD scope match, and post-summary corrections.
Open resource