Customs Tariff of Canada · tariff item · HS 3903.19
3903.19.00.10: Other polystyrene (not expansible): Polymers of styrene, in primary forms: polystyrene, other, high impact
Other polystyrene (not expansible)
✓ Can be used in a customs declaration Data: Customs Tariff of Canada, in force from 11 September 2026 · checked on 24 October 2026
- 3903 Polymers of styrene, in primary forms.
- 39031 Polystyrene:
- 3903.19.00 Other
- 3903.19.00.10 High impact
What you pay
Importing into Canada
Customs duty only: import VAT, other taxes and trade defence duties of this country are not covered here, and the duty calculator works only with the EU, Türkiye, US and UK tariffs.
Same subheading in other tariffs
3903.19 Polymers of styrene, in primary forms: polystyrene, other
UK 6% Third-country duty 2 tariff lines 
EU 6.5% Third-country duty 1 tariff line 
Türkiye 6.5% Third-country duty 2 tariff lines 
USA 6.5% General (MFN) 1 tariff line 
Mexico 35% General (MFN) 2 tariff lines 
Brazil 12.6% General (MFN) 1 tariff line 
Argentina 12.6% General (MFN) 1 tariff line 
Peru Free General (MFN) 1 tariff line 
New Zealand Free General (MFN) 1 tariff line 
Japan 2.8% – 6.5% General (MFN) 2 tariff lines · average 4.7% 
Taiwan 2.5% General (MFN) 1 tariff line 
GCC 5% General (MFN) 1 tariff line 
Switzerland Free General (MFN) 1 tariff line 
Norway Free General (MFN) 2 tariff lines 
North Macedonia Free General (MFN) 1 tariff line 
Nigeria 5% General (MFN) 1 tariff line Canada lines: 3903.19
Legal notes
Subheading notes
1. Within any one heading of this chapter, polymers (including copolymers) and chemically modified polymers are to be classified according to the following provisions:
(a) where there is a subheading named ‘Other’ in the same series:
(1) the designation in a subheading of a polymer by the prefix ‘poly’ (for example, polyethylene and polyamide-6,6) means that the constituent monomer unit or monomer units of the named polymer taken together must contribute 95 % or more by weight of the total polymer content;
(2) the copolymers named in subheadings 390130, 390140, 390320, 390330 and 390430 are to be classified in those subheadings, provided that the comonomer units of the named copolymers contribute 95 % or more by weight of the total polymer content;
(3) chemically modified polymers are to be classified in the subheading named ‘Other’, provided that the chemically modified polymers are not more specifically covered by another subheading;
(4) polymers not meeting (1), (2) or (3) above, are to be classified in the subheading, among the remaining subheadings in the series, covering polymers of that monomer unit which predominates by weight over every other single comonomer unit. For this purpose, constituent monomer units of polymers falling in the same subheading shall be taken together. Only the constituent comonomer units of the polymers in the series of subheadings under consideration are to be compared;
(b) where there is no subheading named ‘Other’ in the same series:
(1) polymers are to be classified in the subheading covering polymers of that monomer unit which predominates by weight over every other single comonomer unit. For this purpose, constituent monomer units of polymers falling in the same subheading shall be taken together. Only the constituent comonomer units of the polymers in the series under consideration are to be compared;
(2) chemically modified polymers are to be classified in the subheading appropriate to the unmodified polymer.
Polymer blends are to be classified in the same subheading as polymers of the same monomer units in the same proportions.
2. For the purposes of subheading 392043, the term ‘plasticisers’ includes secondary plasticisers.
Tariff item 3903.19.00.10 is a line of the Customs Tariff of Canada under HS subheading 3903.19 (polymers of styrene, in primary forms: polystyrene, other).
The MFN tariff rate is free, and quantities are declared in KGM.
For the same subheading, the UK duty is 6%, the EU duty is 6.5%, the Türkiye duty is 6.5%, the US duty is 6.5%, the Mexico duty is 35%, the Brazil duty is 12.6%, the Argentina duty is 12.6%, the Peru duty is free, the New Zealand duty is free, the Japan duty is 2.8%–6.5%, the Taiwan duty is 2.5%, the GCC duty is 5%, the Switzerland duty is free, the Norway duty is free, the North Macedonia duty is free and the Nigeria duty is 5%.
Canada imported goods of subheading 3903.19 worth US$117m in 2024; the largest supplier was the United States.
Questions and answers
What is the Canada import duty for tariff item 3903.19.00.10?
The MFN tariff rate in the Customs Tariff of Canada is free; the supplementary unit is KGM. This page shows the rate as published by the national source and, where the source publishes them, preferential rates: choose the country of origin to see them. Trade defence duties and VAT are not covered.
Where does Canada import these goods from?
For subheading 3903.19 as a whole, the largest supplier in 2024 was the United States (US$84m), followed by Mexico.