HTS Heading 2621

Other slag and ash, including seaweed ash (kelp); ash and residues from the incineration of municipal waste

All 2 HTS codes under heading 2621 (other slag and ash, including seaweed ash (kelp)), with their duty rates from the 2026 HTS Revision 23. General duty Free.

Every line of heading 2621

  • 2621 Other slag and ash, including seaweed ash (kelp); ash and residues from the incineration of municipal waste.
  • 2621.10.00.00 Ash and residues from the incineration of municipal waste (t): General Free; Special none; Column 2 Free.
  • 2621.90.00.00 Other (under: Other slag and ash, including seaweed ash (kelp); ash and residues from the incineration of municipal waste) (t): General Free; Special none; Column 2 Free.

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.

Last reviewed 2026-11-12.