Import duty / Chapter 28
50 headings and 180 tariff lines in section VI; 134 lines clear duty-free under USMCA for North American origin goods. Each heading lists its lines with the published US and Canadian rates, verified October 2026.
Fluorine, chlorine, bromine and iodine
3 lines · 2 USMCA-free
Sulphur; sublimed or precipitated, colloidal sulphur
1 line · 1 USMCA-free
Carbon; carbon blacks and other forms of carbon n.e.c.
1 line · 1 USMCA-free
Hydrogen, rare gases and other non-metals
11 lines · 10 USMCA-free
Alkali or alkaline-earth metals; rare-earth metals, scandium and yttrium, whether or not intermixed or interalloyed; mercury
5 lines · 4 USMCA-free
Hydrogen chloride (hydrochloric acid); chlorosulphuric acid
2 lines · 2 USMCA-free
Sulphuric acid; oleum
1 line · 1 USMCA-free
Nitric acid; sulphonitric acids
1 line · 1 USMCA-free
Diphosphorus pentaoxide; phosphoric acid; polyphosphoric acids, whether or not chemically defined
2 lines · 2 USMCA-free
Oxides of boron; boric acids
1 line · 1 USMCA-free
Inorganic acids and other inorganic oxygen compounds of non-metals; n.e.c. in heading no. 2806 to 2810
6 lines · 3 USMCA-free
Halides and halide oxides of non-metals
9 lines · 9 USMCA-free
Sulphides of non-metals; commercial phosphorus trisulphide
2 lines · 1 USMCA-free
Ammonia; anhydrous or in aqueous solution
2 lines · 2 USMCA-free
Sodium hydroxide (caustic soda); potassium hydroxide (caustic potash) peroxides of sodium or potassium
4 lines · 4 USMCA-free
Hydroxide and peroxide of magnesium; oxides, hydroxides and peroxides of strontium or barium
2 lines · 1 USMCA-free
Zinc; oxide and peroxide
1 line · 1 USMCA-free
Aluminium oxide (including artificial corundum); aluminium hydroxide
3 lines · 2 USMCA-free
Chromium oxides and hydroxides
2 lines · 2 USMCA-free
Manganese oxides
2 lines · 2 USMCA-free
Iron oxides and hydroxides; earth colours containing 70% or more by weight of combined iron evaluated as Fe2o3
2 lines · 2 USMCA-free
Cobalt oxides and hydroxides; commercial cobalt oxides
1 line · 1 USMCA-free
Titanium oxides
1 line · 1 USMCA-free
Lead oxides; red lead and orange lead
2 lines · 1 USMCA-free
Hydrazine and hydroxylamine and their inorganic salts; other inorganic bases; other metal oxides, hydroxides and peroxides
9 lines · 7 USMCA-free
Fluorides; fluorosilicates, fluoroaluminates and other complex fluorine salts
4 lines · 2 USMCA-free
Chlorides; chloride oxides and chloride hydroxides; bromides and bromide oxides; iodides and iodide oxides
11 lines · 7 USMCA-free
Hypochlorites; commercial calcium hypochlorite; chlorites; hypobromites
2 lines · 2 USMCA-free
Chlorates and perchlorates; bromates and perbromates; iodates and periodates
3 lines · 2 USMCA-free
Sulphides; polysulphides whether or not chemically defined
2 lines · 1 USMCA-free
Dithionites and sulphoxylates
2 lines · 1 USMCA-free
Sulphites; thiosulphates
3 lines · 2 USMCA-free
Sulphates; alums; peroxosulphates (persulphates)
10 lines · 7 USMCA-free
Nitrites; nitrates
3 lines · 1 USMCA-free
Phosphinates (hypophosphites), phosphonates (phosphites), and phosphates; and polyphosphates, whether or not chemically defined
8 lines · 6 USMCA-free
Carbonates; peroxocarbonates (percarbonates); commercial ammonium carbonate containing ammonium carbamate
8 lines · 6 USMCA-free
Cyanides, cyanide oxides and complex cyanides
3 lines · 2 USMCA-free
Silicates; commercial alkali metal silicates
3 lines · 2 USMCA-free
Borates; peroxoborates (perborates)
4 lines · 4 USMCA-free
Salts of oxometallic or peroxometallic acids
7 lines · 4 USMCA-free
Salts of inorganic acids or peroxoacids, n.e.c. including aluminosilicates whether or not chemically defined, but excluding azides
2 lines · 1 USMCA-free
Colloidal precious metals; inorganic or organic compounds of precious metals, whether or not chemically defined; amalgams of precious metals
5 lines · 5 USMCA-free
Radioactive chemical elements and radioactive isotopes (including the fissile or fertile chemical elements and isotopes); and their compounds; mixtures and residues containing these products
8 lines · 6 USMCA-free
Isotopes other than those of heading no. 2844; compounds, inorganic or organic, of such isotopes, whether or not chemically defined
5 lines · 5 USMCA-free
Compounds, inorganic or organic, of rare-earth metals; of yttrium or of scandium or of mixtures of these metals
2 lines · 1 USMCA-free
Hydrogen peroxide; whether or not solidified with urea
1 line · 1 USMCA-free
Carbides, whether or not chemically defined
3 lines · 1 USMCA-free
Hydrides, nitrides, azides, silicides and borides, whether or not chemically defined, other than compounds which are also carbides of heading no. 2849
1 line · 0 USMCA-free
Inorganic or organic compounds of mercury, excluding amalgams, whether or not chemically defined
2 lines · 0 USMCA-free
Phosphides, chemically defined or not, not ferrophosphorus; other inorganic compounds n.e.c. (including distilled, conductivity water and water of like purity); liquid air, rare gases removed or not; compressed air; amalgams, not precious metal amalgams
2 lines · 1 USMCA-free
This page is a free reference for shippers, not a customs ruling. Final classification and duty are determined by the licensed customs broker at entry, and government amounts are always billed at actual. Rates change with each tariff edition and trade action.
