3507.90—Enzymes; prepared enzymes not elsewhere specified or included, other
General duty rate
Free
Across 2 10-digit lines
Coverage on this page
Up one level: 3507 — Enzymes; prepared enzymes not elsewhere specified or included: (heading)
Plain-English explanation
HTS 3507.90 is a 6-digit subheading of the U.S. Harmonized Tariff Schedule covering Enzymes; prepared enzymes not elsewhere specified or included, other. It sits in Chapter 35: Albuminoidal substances; modified starches; glues; enzymes, Section VI: Products of the Chemical or Allied Industries and rolls up 2 10-digit statistical lines, all with a general duty rate of Free. No Chapter 99 tariff modifications or AD/CVD orders currently flag any line under this subheading in Tandom's catalog.
10-digit lines under 3507.90(2)
Pick a line to view full rate detail and compute landed duty
Frequently asked questions
What does HTS 3507.90 cover?
HTS 3507.90 is a 6-digit subheading of the U.S. Harmonized Tariff Schedule covering Enzymes; prepared enzymes not elsewhere specified or included, other. It belongs to Chapter 35 and rolls up 2 10-digit statistical lines that brokers actually file at entry.
What is the duty rate for HTS 3507.90?
Every 10-digit line under HTS 3507.90 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.
How do I find the right 10-digit line under HTS 3507.90?
U.S. Customs requires entries to be filed at the 10-digit statistical level — the broader subheading HTS 3507.90 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.
Are there AD/CVD orders affecting HTS 3507.90?
Learn more
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