UK Global Tariff · commodity code · HS 3903.90
3903 90 90 70: Copolymer in the form of granules containing by weight: - 75% (± 7%) styrene and - 25% (± 7%) methylmethacrylate
Other styrene polymers, primary
✓ Can be used in a customs declaration Data: UK Global Tariff · checked on 24 October 2026
- 3903 Polymers of styrene, in primary forms
- 3903 90 00 00 Other
- 3903 90 90 00 Other
- 3903 90 90 70 Copolymer in the form of granules containing by weight: - 75% (± 7%) styrene and - 25% (± 7%) methylmethacrylate
What you pay
Importing into UK
Additional duties and import rules
Charges on top of the customs duty, and rules the goods must meet at the border.
Additional duties and charges 3
- Additional dutyAdditional duties 35%
- Applies to goods from
- Belarus, Russia
- Legal act
- 2022 No. 833
- Documents
- 9018
- Duty suspensionAutonomous tariff suspension Free
- Applies to goods from
- all countries
- In force
- until 31 December 2028
- Legal act
- 2020 No. 1435
- Duty suspensionAirworthiness tariff suspension Free
- Applies to goods from
- all countries
- Legal act
- S.I. 2018/1249
- Documents
- C119 Authorised Release Certificate — EASA Form 1 (Appendix I to Annex I to Regulation (EU) No 748/2012), or equivalent certificate
Import requirements 2
- Import controlRestriction on entry into free circulation
- Applies to goods from
- Russia, Ukraine
- Legal act
- 2023 No. 440, S.I. 2022/395
- Documents
- 9011
- 9022
- 9038
- 9009
- 9010
- 9017
- Import controlImport control - Waste
- Applies to goods from
- all countries
- Legal act
- S.I. 2019/590
- Documents
- C672 Information document accompanying shipments of waste as mentioned in Regulation (EU) 2024/1157 – Article 18 and Annex VII
- C669 Notification document as mentioned in Regulation (EU) 2024/1157 - Article 5 and Annex IA
- Y923 Product not subjected to the provisions of Regulation (EU) 2024/1157
- C670 Movement document as mentioned in Regulation (EU) 2024/1157 – Article 5 and Annex IB
Preferential rates by country
| Agreement or scheme | Countries | Rate |
|---|---|---|
| standard rate (no agreement) | — | 6% |
| DCTS Comprehensive | Afghanistan, Angola, Bangladesh, Benin and 38 moreAfghanistan, Angola, Bangladesh, Benin, Bhutan, Burkina Faso, Burundi, Cambodia, Central African Republic, Chad, Comoros, Congo - Kinshasa, Djibouti, Eritrea, Ethiopia, Gambia, Guinea, Guinea-Bissau, Haiti, Kiribati, Laos, Liberia, Malawi, Mali, Mauritania, Myanmar (Burma), Nepal, Niger, Rwanda, São Tomé & Príncipe, Senegal, Sierra Leone, Somalia, South Sudan, Sudan, Tanzania, Timor-Leste, Togo, Tuvalu, Uganda, Yemen, Zambia | Free |
| European Union (including code " EU") | Free | |
| DCTS Enhanced | Algeria, Bolivia, Cape Verde, Congo - Brazzaville and 13 moreAlgeria, Bolivia, Cape Verde, Congo - Brazzaville, Cook Islands, Kyrgyzstan, Micronesia, Mongolia, Nigeria, Niue, Pakistan, Philippines, Sri Lanka, Syria, Tajikistan, Uzbekistan, Vanuatu | Free |
| CARIFORUM | Antigua & Barbuda, Bahamas, Barbados, Belize and 10 moreAntigua & Barbuda, Bahamas, Barbados, Belize, Dominica, Dominican Republic, Grenada, Guyana, Jamaica, St Kitts & Nevis, St Lucia, St Vincent & the Grenadines, Suriname, Trinidad & Tobago | Free |
| OCTs (Overseas Countries and Territories) | Anguilla, Bermuda, British Indian Ocean Territory, British Virgin Islands and 7 moreAnguilla, Bermuda, British Indian Ocean Territory, British Virgin Islands, Cayman Islands, Falkland Islands, Montserrat, Pitcairn Islands, South Georgia & South Sandwich Islands, St Helena, Turks & Caicos Islands | Free |
| Central America | Costa Rica, El Salvador, Guatemala, Honduras, Nicaragua, Panama | Free |
| SADC EPA | Botswana, Eswatini, Lesotho, Mozambique, Namibia | Free |
| Eastern and Southern Africa States | Madagascar, Mauritius, Seychelles, Zimbabwe | Free |
| CPTPP | Brunei, Malaysia | Free |
| UK–Andorra agreement | Andorra | Free |
| UK–Albania agreement | Albania | Free |
| UK–Australia agreement | Australia | Free |
| UK–Canada agreement | Canada | Free |
| UK–Switzerland agreement | Switzerland | Free |
| UK–Côte d’Ivoire agreement | Côte d’Ivoire | Free |
| UK–Chile agreement | Chile | Free |
| UK–Cameroon agreement | Cameroon | Free |
| UK–Colombia agreement | Colombia | Free |
| UK–Ceuta & Melilla agreement | Ceuta & Melilla | Free |
| UK–Ecuador agreement | Ecuador | Free |
| UK–Egypt agreement | Egypt | Free |
| UK–Fiji agreement | Fiji | Free |
| UK–Faroe Islands agreement | Faroe Islands | Free |
| UK–Georgia agreement | Georgia | Free |
| UK–Ghana agreement | Ghana | Free |
| UK–Israel agreement | Israel | Free |
| UK–India agreement | India | Free |
| UK–Iceland agreement | Iceland | Free |
| UK–Jordan agreement | Jordan | Free |
| UK–Japan agreement | Japan | Free |
| UK–Kenya agreement | Kenya | Free |
| UK–South Korea agreement | South Korea | Free |
| UK–Lebanon agreement | Lebanon | Free |
| UK–Liechtenstein agreement | Liechtenstein | Free |
| UK–Morocco agreement | Morocco | Free |
| UK–Moldova agreement | Moldova | Free |
| UK–North Macedonia agreement | North Macedonia | Free |
| UK–Mexico agreement | Mexico | Free |
| UK–Norway agreement | Norway | Free |
| UK–New Zealand agreement | New Zealand | Free |
| UK–Peru agreement | Peru | Free |
| UK–Papua New Guinea agreement | Papua New Guinea | Free |
| UK–Palestinian Territories agreement | Palestinian Territories | Free |
| UK–Serbia agreement | Serbia | Free |
| UK–Solomon Islands agreement | Solomon Islands | Free |
| UK–Singapore agreement | Singapore | Free |
| UK–San Marino agreement | San Marino | Free |
| UK–Tunisia agreement | Tunisia | Free |
| UK–Türkiye agreement | Türkiye | Free |
| UK–Ukraine agreement | Ukraine | Free |
| UK–Vietnam agreement | Vietnam | Free |
| UK–Samoa agreement | Samoa | Free |
| UK–Kosovo agreement | Kosovo | Free |
| UK–South Africa agreement | South Africa | Free |
| DCTS Standard | Indonesia | 2.5% |
Footnotes
TN701 According to the Council Regulation (EU) No 692/2014 (OJ L183, p. 9), as retained in UK La…
The prohibition shall not apply in respect of:
(a) the execution until 26 September 2014, of trade contracts concluded before 25 June 2014, or of ancillary contracts necessary for the execution of such contracts, provided that the natural or legal persons, entity or body seeking to perform the contract have notified, at least 10 working days in advance, the activity or transaction to the competent authority of the Member State in which they are established.
(b) goods originating in Crimea or Sevastopol which have been made available to the Ukrainian authorities for examination, for which compliance with the conditions conferring entitlement to preferential origin has been verified and for which a certificate of origin has been issued in accordance with Regulation (EU) No 978/2012 and Regulation (EU) No 374/2014, as retained in UK Law, or in accordance with the EU-Ukraine Association Agreement
UK: imports by month · HS 3903.90
Main suppliers, last 12 months
| Country | Value | Share | Change |
|---|---|---|---|
 Germany | £14.4m | 31.5% | -13.6% |
 Belgium | £7.2m | 15.7% | +10.2% |
 Sweden | £6m | 13.1% | +8% |
 Netherlands | £5.7m | 12.5% | +20.9% |
 South Korea | £4.1m | 8.9% | -28.9% |
 France | £2m | 4.4% | +36.9% |
 United States | £1.6m | 3.4% | +4.1% |
 India | £800k | 1.7% | -2.1% |
Same subheading in other tariffs
3903.90 Polymers of styrene, in primary forms: other
EU Free – 6.5% Third-country duty 3 tariff lines · average 2.2% 
Türkiye Free – 6.5% Third-country duty 3 tariff lines · average 2.2% USA 6.5% General (MFN) 2 tariff lines 
Canada Free Third-country duty 2 tariff lines 
Mexico 5% – 7% Third-country duty 6 tariff lines · average 5.8% 
Brazil Free – 20% Third-country duty 3 tariff lines · average 10.9% 
Argentina Free – 12.6% Third-country duty 5 tariff lines · average 10.1% 
Peru Free Third-country duty 1 tariff line 
New Zealand Free – 5% Third-country duty 4 tariff lines · average 2.5% 
Japan 3.1% Third-country duty 2 tariff lines 
Taiwan 1% – 2.5% Third-country duty 3 tariff lines · average 2% 
GCC 5% Third-country duty 2 tariff lines 
Switzerland Free Third-country duty 1 tariff line 
Norway Free Third-country duty 1 tariff line 
North Macedonia Free Third-country duty 3 tariff lines 
Nigeria 5% Third-country duty 1 tariff line UK lines: 3903.90
- 3903 90 10 00Copolymer, solely of styrene with allyl alcohol, of an acetyl value of 175 or more
- 3903 90 20 00Brominated polystyrene, containing by weight 58% or more but not more than 71% of bromine, in one of the forms mentioned in note 6(b) to this chapter
- 3903 90 90 20Copolymer in the form of granules containing by weight: - 83 ± 3% styrene, - 7 ± 2% n-butyl acrylate, - 9 ± 2% n-butyl methacrylate and - 0.01% or more but not more than 1% of polyolefinic wax
- 3903 90 90 35Copolymer of _α_-methylstyrene and styrene, having a softening point exceeding 113 ºc
- 3903 90 90 38Polytetrafluoroethylene (cas rn 9002-84-0) encapsulated with an acrylonitrile-styrene copolymer (cas rn 9003-54-7), with a content by weight of each polymer of 50% (± 1%)
- 3903 90 90 43Mixture of polymers consisting by weight of: -10% or more but not more than 30% of a styrene-ethylene-butylene-styrene block copolymer (cas rn 66070-58-4), -25% or more but not more than 45% of mineral oil (cas rn 8042-47-5), -25% or more but not more than 45% of calcium carbonate (cas rn 1317-65-3), -10% or more but not more than 20% of polypropylene (cas rn 9003-07-0), and -1% or more but not more than 3% of a copolymer of α-methylstyrene and vinyltoluene (cas rn 9017-27-0)
- 3903 90 90 60Copolymer of styrene with maleic anhydride, either partially esterified or completely chemically modified, in flake or powder form
- 3903 90 90 70Copolymer in the form of granules containing by weight: - 75% (± 7%) styrene and - 25% (± 7%) methylmethacrylate
- 3903 90 90 86Mixture containing by weight: - 45% or more but not more than 65% of polymers of styrene, - 30% or more but not more than 45% of poly(phenylene ether), and - not more than 11% of additives
- 3903 90 90 90Polymers of styrene, in primary forms: other, other, other
Binding rulings for similar goods
Decisions of U.S. Customs and Border Protection (CROSS) and HMRC (Advance Tariff Rulings) on goods classified here. A ruling binds only its holder, but shows how the authorities classify similar goods. The descriptions are the authorities’ own, in English.
- N319986 U.S. CBP
The tariff classification of a acrylonitrile-butyl acrylate-methyl methacrylate-styrene copolymer (CAS # 25852-38-4) and a styrene acrylonitrile butyl acrylate polymer (CAS # 26299-47-8) from China
- N278902 U.S. CBP
The tariff classification of methyl methacrylate-butadeine-styrene copolymers (CAS-25053-09-2) from Korea
- N278871 U.S. CBP
The tariff classification of nine copolymers of acrylonitrile-butadiene-styrene (ABS) CAS-9003-56-9 and two copolymer blends of ABS CAS-9003-56-9 and methylstyrene-acrylonitrile-styrene CAS-9010-96-2 from Korea
- N272473 U.S. CBP
The tariff classification of Joncryl® 678 from Germany
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.
In the UK Global Tariff, 3903 90 90 70 is one of 10 lines under subheading 3903.90, polymers of styrene, in primary forms: other.
The third-country duty is 6%.
Goods from 174 countries can enter the UK at a preferential rate instead of the standard 6%; 173 of them pay no duty at all, for example under DCTS Comprehensive or European Union.
In the UK, additional duty of 35% applies on top of the customs duty to goods from Belarus and Russia.
In the 12 months to August 2026, the UK imported other styrene polymers, primary (HS 3903.90) worth £45.8m (down 7% on the year before), at an average of £1.31 per kg; Germany supplied 32%, followed by Belgium.
For the same subheading, the EU duty is 0%–6.5%, the Türkiye duty is 0%–6.5%, the US duty is 6.5%, the Canada duty is free, the Mexico duty is 5%–7%, the Brazil duty is 0%–20%, the Argentina duty is 0%–12.6%, the Peru duty is free, the New Zealand duty is 0%–5%, the Japan duty is 3.1%, the Taiwan duty is 1%–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%.
The UK imported goods of subheading 3903.90 worth US$66m in 2024; the largest supplier was Germany.
Questions and answers
What is the UK import duty for commodity code 3903 90 90 70?
The third-country duty in the UK Global Tariff is 6%. Preferential rates for goods from agreement countries, anti-dumping duties and VAT are not included.
Which countries get a lower rate on 3903 90 90 70?
174 countries have a preferential rate on this line, 173 of them at 0%, under DCTS Comprehensive, European Union and DCTS Enhanced and other arrangements. The rate applies only to goods that meet the rules of origin of the agreement, with proof of origin. Choose the country of origin on this page to see its rate.
Do anti-dumping or other extra duties apply to 3903 90 90 70?
Additional duty of 35% on goods from Belarus and Russia. These are charged on top of the customs duty.
Where does the UK import these goods from?
For subheading 3903.90 as a whole, the largest supplier in 2024 was Germany (US$21m), followed by Belgium.