Enzymes; prepared enzymes not elsewhere specified or included

Every line of heading 3507

• 3507 Enzymes; prepared enzymes not elsewhere specified or included.
• 3507.10.00.00 Rennet and concentrates thereof (kg): General Free; Special none; Column 2 Free.
• 3507.90 Other (under: Enzymes; prepared enzymes not elsewhere specified or included).
• 3507.90.20.00 Pencillin G amidase (under: Other) (kg): General Free; Special none; Column 2 25%.
• 3507.90.70 Other (under: Other): General Free; Special none; Column 2 25%.
• 3507.90.70.10 Enzymes – proteases, amylases, lipases, cellulases, pectinases, oxidases, and catalases (kg).
• 3507.90.70.80 Other (under: Other) (kg).

About these rates

The rates are those printed in the 2026 HTS Revision 23, published by the U.S. International Trade Commission. A 10-digit statistical line takes the rates printed on the 8-digit line above it. Chapter 99 duties (Section 232, Section 301, IEEPA) depend on the product, the origin and the date, are charged on top, and are not included. A code here is a strong lead, not a ruling: confirm it with a customs broker or a CBP binding ruling.