HS 8504 · Electrical machinery and electronics
Transformers and power supplies
Data last updated 18 October 2026 · schedule data 2026.10.2
In short
The EU already charges no duty on Mercosur transformers and power supplies; Brazil's duty on EU transformers and power supplies is up to 16.3% today and reaches zero by 2041 (3 of 30 lines are excluded).
Rates at a glance
Into the EU from Mercosur
25 tariff linesPreferential duty 2026
0%
Duty-free on all phased lines by
No phase-out
Agreement base rate
0–3.7%
Applied MFN rate today
0–3.7%
Into Brazil from the EU
30 tariff linesPreferential duty 2026
0–20%
Duty-free on all phased lines by
2041
Agreement base rate
0–20%
Applied MFN rate today
7–20%
Work out the duty on your shipment
Opens the calculator with heading 8504 and the corridor filled in.
About this product
Transformers, chargers and power converters enter the EU duty-free from Mercosur from the start. Mercosur phases out its duties on European models over long schedules and excludes a few lines. Grid and renewables projects drive much of this demand.
How the duty falls, year by year
Highest and lowest ad valorem duty each year over the lines on a path to zero. Excluded and quota-only lines keep their duty and aren't included.
Into the EU from Mercosur
Nothing to phase out in this direction: every line is already duty-free, excluded or only covered by a quota.
Into Brazil from the EU
| Year | Ad valorem duty | Lines duty-free |
|---|---|---|
| 2026 | 0–16.3% | 1 / 30 |
| 2027 | 0–14.7% | 1 / 30 |
| 2028 | 0–13.1% | 1 / 30 |
| 2029 | 0–12.1% | 1 / 30 |
| 2030 | 0–11.1% | 1 / 30 |
| 2031 | 0–10.1% | 1 / 30 |
| 2032 | 0–9.1% | 1 / 30 |
| 2033 | 0–8.1% | 1 / 30 |
| 2034 | 0–7% | 1 / 30 |
| 2035 | 0–6% | 1 / 30 |
| 2036 | 0–5% | 16 / 30 |
| 2037 | 0–4% | 16 / 30 |
| 2038 | 0–3% | 16 / 30 |
| 2039 | 0–2% | 16 / 30 |
| 2040 | 0–1% | 16 / 30 |
| 2041 | 0% | 27 / 30 |
Lines by staging category
The staging category sets the speed of the cut: 0 is duty-free from entry into force, 4 to 15 are the years to zero, E is excluded and letter codes are quotas or special treatments.
Mercosur → EU
- 0× 25
EU → Mercosur
- 10× 15
- 15× 11
- E× 3
- 0× 1
Tariff-rate quotas
No tariff-rate quota applies to this heading.
Rates in each Mercosur country
Each member has its own base rate and applied MFN rate. The preference is cut from the base rate, or from the applied rate where that's lower (Art. 2.4(7) of the agreement), so the current rate can differ by country.
| Country | Base rate | Applied MFN | Preferential 2026 | Zero by | Applied-rate source |
|---|---|---|---|---|---|
| Brazil | 0–20% | 7–20%1 line has no single published rate | 0–20% | 2041 | Brazil applied import duty, Res. Gecex 272/2021 Annexes II, V, VI, IX (MDIC), as of 5 October 2026 |
| Argentina | 0–18% | 0–35%1 line has no single published rate | 0–16.8% | 2041 | Argentina applied import duty (DIE), ARCA Arancel Integrado, as of 18 October 2026 |
| Uruguay | 0–18% | 0–18%2 lines have no single published rate | 0–16.3% | 2041 | Uruguay applied import duty (Arancel Nacional, MEF), as of 10 February 2025Manual snapshotOlder than 180 days |
| Paraguay | 0–18% | 0–6%17 lines have no single published rate | 0–16.8% | 2041 | Paraguay applied import duty (Arancel Nacional Vigente, MEF), as of 4 November 2025Manual snapshotOlder than 180 days |
All tariff lines
Line descriptions are the English text of the schedules (CN 2013 for the EU, NCM 2012 for Mercosur).
Into the EU from Mercosur: 25 lines
| Code | Description | Staging | Base | Applied MFN | 2026 | Final |
|---|---|---|---|---|---|---|
| 8504 10 20 | Inductors, whether or not connected with a capacitor | 0 | 3.7% | 3.7% | Free | Free |
| 8504 10 80 | Ballasts for discharge lamps or tubes (excl. inductors, whether or not connected with a capacitor) | 0 | 3.7% | 3.7% | Free | Free |
| 8504 21 00 | Liquid dielectric transformers, having a power handling capacity ≤ 650 kVA | 0 | 3.7% | 3.7% | Free | Free |
| 8504 22 10 | Liquid dielectric transformers, having a power handling capacity > 650 kVA but ≤ 1.600 kVA | 0 | 3.7% | 3.7% | Free | Free |
| 8504 22 90 | Liquid dielectric transformers, having a power handling capacity > 1.600 kVA but ≤ 10.000 kVA | 0 | 3.7% | 3.7% | Free | Free |
| 8504 23 00 | Liquid dielectric transformers, having a power handling capacity > 10.000 kVA | 0 | 3.7% | 3.7% | Free | Free |
| 8504 31 21 | Measuring transformers for voltage measurement, having a power handling capacity ≤ 1 kVA | 0 | 3.7% | 3.7% | Free | Free |
| 8504 31 29 | Measuring transformers having a power handling capacity ≤ 1 kVA (other than for voltage measurement) | 0 | 3.7% | 3.7% | Free | Free |
| 8504 31 80 | Transformers having a power handling capacity ≤ 1 kVA (excl. liquid dielectric transformers) | 0 | 3.7% | 3.7% | Free | Free |
| 8504 32 00 | Transformers, having a power handling capacity > 1 kVA but ≤ 16 kVA (excl. liquid dielectric transformers) | 0 | 3.7% | 3.7% | Free | Free |
| 8504 33 00 | Transformers having a power handling capacity > 16 kVA but ≤ 500 kVA (excl. liquid dielectric transformers) | 0 | 3.7% | 3.7% | Free | Free |
| 8504 34 00 | Transformers having a power handling capacity > 500 kVA (excl. liquid dielectric transformers) | 0 | 3.7% | 3.7% | Free | Free |
| 8504 40 30 | Static converters of a kind used with telecommunication apparatus, automatic data- processing machines and units thereof | 0 | Free | – | Free | Free |
| 8504 40 55 | Accumulator chargers (excl. of a kind used with telecommunication apparatus, automatic data-processing machines and units thereof, and polycrystalline semiconductor rectifiers) | 0 | 3.3% | – | Free | Free |
| 8504 40 82 | Rectifiers (excl. of a kind used with telecommunication apparatus, automatic data- processing machines and units thereof) | 0 | 3.3% | – | Free | Free |
| 8504 40 84 | Inverters having power handling capacity ≤ 7,5 kVA (excl. of a kind used with telecommunication apparatus, automatic data-processing machines and units thereof) | 0 | 3.3% | Free | Free | Free |
| 8504 40 88 | Inverters having power handling capacity > 7,5 kVA (excl. of a kind used with telecommunication apparatus, automatic data-processing machines and units thereof) | 0 | 3.3% | – | Free | Free |
| 8504 40 90 | Static converters (excl. of a kind used with telecommunication apparatus, automatic data-processing machines and units thereof, battery chargers, polycrystalline semiconductor and other rectifiers, and a.c. converters) | 0 | 3.3% | – | Free | Free |
| 8504 50 20 | Inductors of a kind used with telecommunication apparatus and for power supplies for automatic data-processing machines and units thereof (excl. those for discharge lamps or tubes) | 0 | Free | Free | Free | Free |
| 8504 50 95 | Inductors (excl. of a kind used with telecommunication apparatus and for power supplies for automatic data-processing machines and units thereof and those for discharge lamps or tubes) | 0 | 3.7% | Free | Free | Free |
| 8504 90 05 | Electronic assemblies of inductors of a kind used with telecommunication apparatus and for power supplies for automatic data-processing machines and units thereof, n.e.s. | 0 | Free | – | Free | Free |
| 8504 90 11 | Ferrite cores for transformers and inductors | 0 | 2.2% | Free | Free | Free |
| 8504 90 18 | Parts of transformers and inductors, n.e.s. (excl. electronic assemblies of inductors of a kind used with telecommunication apparatus and for power supplies for automatic data-processing machines and units thereof, and ferrite cores) | 0 | 2.2% | – | Free | Free |
| 8504 90 91 | Electronic assemblies of static converters of a kind used with telecommunication apparatus, automatic data-processing machines and units thereof, n.e.s. | 0 | Free | – | Free | Free |
| 8504 90 99 | Parts of static converters, n.e.s. (excl. electronic assemblies of a kind used with telecommunication apparatus, automatic data-processing machines and units thereof) | 0 | 2.2% | – | Free | Free |
Into Brazil from the EU: 30 lines
| Code | Description | Staging | Base | Applied MFN | 2026 | Final |
|---|---|---|---|---|---|---|
| 8504 10 00 | Reactors for lamps/discharge tubes | 10 | 18% | 16.2% | 14.7% | Freefrom 2036 |
| 8504 21 00 | Transformers of liquid dielectric, power ≤ 650 kVA | 15 | 14% | 20% | 13.1% | Freefrom 2041 |
| 8504 22 00 | Transformers of liquid dielectric, 650 kVA < power ≤ 10 000 kVA | E | 14% | 20% | 20% | 20% |
| 8504 23 00 | Transformers of liquid dielectric, power > 10 000 kVA | 10 | 14% | 20% | 12.7% | Freefrom 2036 |
| 8504 31 11 | Current transformers, electrical, power ≤ 1 kVA, for frequency ≤ 60 Hz, of current | 15 | 18% | 16.2% | 15.1% | Freefrom 2041 |
| 8504 31 19 | Other electrical transformers power ≤ 1 kVA, for frequency ≤ 60 Hz | 10 | 18% | 18% | 16.3% | Freefrom 2036 |
| 8504 31 91 | Horizontal output electrical transformer (fly back), output voltage > 18 kV and horizontal scanning frequency ≥ 32 kHz, with power ≤ 1 kVA | 0 | Free | 7.2% | Free | Free |
| 8504 31 92 | Electrical transformers of phi, detection, ratio, linearity or focusing, of a power ≤ 1 kVA | 15 | 18% | 16.2% | 15.1% | Freefrom 2041 |
| 8504 31 99 | Other electrical transformers with power ≤ 1 kVA | 15 | 18% | 16.2% | 15.1% | Freefrom 2041 |
| 8504 32 11 | Electrical transformers 1 kVA < power ≤ 3 kVA, for frequency ≤ 60 Hz | 15 | 18% | 16.2% | 15.1% | Freefrom 2041 |
| 8504 32 19 | Other electrical transformers 1 kVA < power ≤ 3 kVA | 15 | 18% | 16.2% | 15.1% | Freefrom 2041 |
| 8504 32 21 | Electrical transformers 3 kVA < power ≤ 16 kVA, for frequency ≤ 60 Hz | 15 | 18% | 16.2% | 15.1% | Freefrom 2041 |
| 8504 32 29 | Other electrical transformers 3 kVA < power ≤ 16 kVA | 15 | 18% | 16.2% | 15.1% | Freefrom 2041 |
| 8504 33 00 | Electrical transformers 16 kVA < power ≤ 500 kVA | 15 | 14% | 20% | 13.1% | Freefrom 2041 |
| 8504 34 00 | Electrical transformers power > 500 kVA | E | 14% | 20% | 20% | 20% |
| 8504 40 10 | Accumulator chargers (electric converters) | 10 | 18% | 18% | 16.3% | Freefrom 2036 |
| 8504 40 21 | Rectifiers, other than battery chargers, crystal (semiconductor) | 10 | 18% | 16.2% | 14.7% | Freefrom 2036 |
| 8504 40 22 | Electrolytic rectifiers (electric converters) | 10 | 18% | 16.2% | 14.7% | Freefrom 2036 |
| 8504 40 29 | Other rectifiers, except battery chargers | 10 | 18% | 16.2% | 14.7% | Freefrom 2036 |
| 8504 40 30 | Electric converters of continuous current | 15 | 14% | 7% | 6.5% | Freefrom 2041 |
| 8504 40 40 | Uninterrupted power supply equipment (UPS or no break) | 10 | 20% | 16% | 14.5% | Freefrom 2036 |
| 8504 40 50 | Electronic frequency converters, for varying speed of electric motors | 10 | 14% | 20% | 12.7% | Freefrom 2036 |
| 8504 40 60 | Electronic power supply apparatus for emergency lighting | 15 | 18% | 16.2% | 15.1% | Freefrom 2041 |
| 8504 40 90 | Other static electric converters | 10 | 14% | 20% | 12.7% | Freefrom 2036 |
| 8504 50 00 | Other reactance and self-induction coils | 10 | 18% | 0 % / 16.2 % | 16.3% | Freefrom 2036 |
| 8504 90 10 | Ferromagnetic powder cores | 10 | 16% | 14.4% | 13% | Freefrom 2036 |
| 8504 90 20 | Parts of reactors for lamps/discharge tubes | 10 | 16% | 14.4% | 13% | Freefrom 2036 |
| 8504 90 30 | Parts of transformers of liquid dielectric (subheadings 8504.21, 8504.22, 8504.23, 8504.33 or 8504.34) for power > 16 kVA | 10 | 14% | 20% | 12.7% | Freefrom 2036 |
| 8504 90 40 | Parts of static converters, except battery chargers and rectifiers | 10 | 14% | 20% | 12.7% | Freefrom 2036 |
| 8504 90 90 | Other parts of other transformers, converters, etc. | E | 16% | 14.4% | 14.4% | 14.4% |
Related products
- 8501Electric motors and generators
- 8517Telephones and network equipment
- 8536Switches, plugs and connectors
- 8544Insulated wire and cable
- 8483Transmission parts
- 8481Taps and valves
All headings in chapter 85: Electrical machinery and electronics
Data and method
Worked out with the calculator's engine from the agreement schedules (Annex 2-A) and the applied-rate files, for agreement year 2026. Mercosur → EU figures assume Brazilian origin, which only matters for the few origin-specific quotas; EU → Mercosur figures are for Brazil unless the country table says otherwise.
- EU TARIC via Swedish Customs Tariff File Distribution (TF), 16 October 2026
- Brazil applied import duty, Res. Gecex 272/2021 Annexes II, V, VI, IX (MDIC), 5 October 2026
- Argentina applied import duty (DIE), ARCA Arancel Integrado, 18 October 2026
- Uruguay applied import duty (Arancel Nacional, MEF), 10 February 2025 · Manual snapshot · Older than 180 days
- Paraguay applied import duty (Arancel Nacional Vigente, MEF), 4 November 2025 · Manual snapshot · Older than 180 days
Estimates only, not legal or customs advice. Check the official schedules before relying on a rate.