Key facts
- HS subheading
- 3811.90
- Duty (MFN)
- 5.8%
- National lines
- 4
- Import VAT/GST in the European Union
- VAT 21%
- De minimis in the European Union
- Flat €3 duty up to €150; tax always charged
- Tariff
- European Union
- Chapter
- 38: Miscellaneous chemical products
Summary
The European Union tariff splits HS 3811.90 (anti-knock preparations, oxidation inhibitors, gum inhibitors, viscosity improvers, anti-corrosive preparations and other prepared additives, for mineral oils (including gasoline) or for other liquids used for the same purposes as mineral oils) into 4 national lines: 3811 90 00 40 (solution of a quaternary ammonium salt based on polyisobutenyl succinimide, containing by weight 10% or more but not more than 29,9% of 2-ethylhexanol), 3811 90 00 50 (corrosion inhibitor containing : - polyisobutenyl succinic acid and - more than 5 % and not more than 20 % by weight of mineral oils for use in the manufacture of blends of additives for fuels), 3811 90 00 60 (solution of mineral oils (CAS RN 64742-52-5, 64742-53-6, 64742-56-9 or blends thereof) containing by weight: -25 % or more but not more than 55 % of the barium, calcium, magnesium or zinc salt of dinonylnaphthylsulphonic acid (CAS RN 25619-56-1, 28015-99-8, 28016-00-4, or 57855-77-3) -whether or not, not more than 25 % of the barium, calcium, magnesium or zinc salt of a mixture of C3-C24 carboxylic acids (CAS RN 68990-37-4)) and 3811 90 00 90 (other). The general (MFN) duty is 5.8% on all 4 lines.
European Union lines under 3811.90
The European Union tariff splits HS 3811.90 (anti-knock preparations, oxidation inhibitors, gum inhibitors, viscosity improvers, anti-corrosive preparations and other prepared additives, for mineral oils (including gasoline) or for other liquids used for the same purposes as mineral oils) into 4 national lines: 3811 90 00 40 (solution of a quaternary ammonium salt based on polyisobutenyl succinimide, containing by weight 10% or more but not more than 29,9% of 2-ethylhexanol), 3811 90 00 50 (corrosion inhibitor containing : - polyisobutenyl succinic acid and - more than 5 % and not more than 20 % by weight of mineral oils for use in the manufacture of blends of additives for fuels), 3811 90 00 60 (solution of mineral oils (CAS RN 64742-52-5, 64742-53-6, 64742-56-9 or blends thereof) containing by weight: -25 % or more but not more than 55 % of the barium, calcium, magnesium or zinc salt of dinonylnaphthylsulphonic acid (CAS RN 25619-56-1, 28015-99-8, 28016-00-4, or 57855-77-3) -whether or not, not more than 25 % of the barium, calcium, magnesium or zinc salt of a mixture of C3-C24 carboxylic acids (CAS RN 68990-37-4)) and 3811 90 00 90 (other).
The general (MFN) duty is 5.8% on all 4 lines.
- 3811 90 00 40Solution of a quaternary ammonium salt based on polyisobutenyl succinimide, containing by weight 10% or more but not more than 29,9% of 2-ethylhexanolDuty: 5.8%
- 3811 90 00 50Corrosion inhibitor containing : - polyisobutenyl succinic acid and - more than 5 % and not more than 20 % by weight of mineral oils for use in the manufacture of blends of additives for fuelsDuty: 5.8%
- 3811 90 00 60Solution of mineral oils (CAS RN 64742-52-5, 64742-53-6, 64742-56-9 or blends thereof) containing by weight: -25 % or more but not more than 55 % of the barium, calcium, magnesium or zinc salt of dinonylnaphthylsulphonic acid (CAS RN 25619-56-1, 28015-99-8, 28016-00-4, or 57855-77-3) -whether or not, not more than 25 % of the barium, calcium, magnesium or zinc salt of a mixture of C3-C24 carboxylic acids (CAS RN 68990-37-4)Duty: 5.8%
- 3811 90 00 90OtherDuty: 5.8%
Import VAT and de minimis in the European Union
The European Union charges VAT on imports at a standard rate of 21%.
From 1 July 2026 until 1 July 2028, consignments sold to buyers in the European Union worth up to €150 pay a flat customs duty of €3 per tariff classification in the consignment instead of the tariff rate. Import tax is charged whatever the value.
In other countries
National tariff lines under 3811.90 are live on border.bot for the United States (1 line, also used by 1 other country).
- United States1 line, used by 1 other country
Frequently asked questions
How many national tariff lines does the European Union tariff have under HS 3811.90?
The European Union tariff splits HS 3811.90 (anti-knock preparations, oxidation inhibitors, gum inhibitors, viscosity improvers, anti-corrosive preparations and other prepared additives, for mineral oils (including gasoline) or for other liquids used for the same purposes as mineral oils) into 4 national lines: 3811 90 00 40 (solution of a quaternary ammonium salt based on polyisobutenyl succinimide, containing by weight 10% or more but not more than 29,9% of 2-ethylhexanol), 3811 90 00 50 (corrosion inhibitor containing : - polyisobutenyl succinic acid and - more than 5 % and not more than 20 % by weight of mineral oils for use in the manufacture of blends of additives for fuels), 3811 90 00 60 (solution of mineral oils (CAS RN 64742-52-5, 64742-53-6, 64742-56-9 or blends thereof) containing by weight: -25 % or more but not more than 55 % of the barium, calcium, magnesium or zinc salt of dinonylnaphthylsulphonic acid (CAS RN 25619-56-1, 28015-99-8, 28016-00-4, or 57855-77-3) -whether or not, not more than 25 % of the barium, calcium, magnesium or zinc salt of a mixture of C3-C24 carboxylic acids (CAS RN 68990-37-4)) and 3811 90 00 90 (other).
What is the duty on HS 3811.90 in the European Union?
The general (MFN) duty is 5.8% on all 4 lines.
Sources and updates
The tariff lines for the European Union come from border.bot release 1, read from the publisher’s files, and have been live since 11 October 2026.
The duty rates for the European Union come from border.bot release 1, read from the publisher’s files, and have been live since 11 October 2026.
The trade programmes for the European Union come from border.bot release 1, read from the publisher’s files, and have been live since 11 October 2026.
The import taxes for the European Union come from border.bot release 1, imported from a file, and have been live since 9 October 2026.
The de minimis thresholds for the European Union come from border.bot release 2, entered by border.bot, and have been live since 11 October 2026.
This page was last updated on 11 October 2026.
Guidance from published tariff data, not a binding ruling. For a decision customs must follow, apply to the destination’s customs authority for a binding tariff ruling.