HS 2836 · Inorganic chemicals
Carbonates
Data last updated 18 October 2026 · schedule data 2026.10.2
In short
The EU's duty on Mercosur carbonates is up to 4.4% today and reaches zero by 2030; Brazil's duty on EU carbonates is up to 18.1% today and reaches zero by 2036 (1 of 13 lines is excluded).
Rates at a glance
Into the EU from Mercosur
10 tariff linesPreferential duty 2026
0–4.4%
Duty-free on all phased lines by
2030
Agreement base rate
3.7–5.5%
Applied MFN rate today
3.7–5.5%
Into Brazil from the EU
13 tariff linesPreferential duty 2026
0–18.1%
Duty-free on all phased lines by
2036
Agreement base rate
0–20%
Applied MFN rate today
0–20%
Work out the duty on your shipment
Opens the calculator with heading 2836 and the corridor filled in.
About this product
Sodium carbonate, calcium carbonate and other carbonates are basic industrial chemicals. The EU removes its duties within a few years, and Mercosur phases out most of its duties over a long schedule, with one line excluded. It's a typical example of how chemicals are treated in the agreement.
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
| Year | Ad valorem duty | Lines duty-free |
|---|---|---|
| 2026 | 0–4.4% | 1 / 10 |
| 2027 | 0–3.3% | 1 / 10 |
| 2028 | 0–2.2% | 1 / 10 |
| 2029 | 0–1.1% | 1 / 10 |
| 2030 | 0% | 10 / 10 |
Into Brazil from the EU
| Year | Ad valorem duty | Lines duty-free |
|---|---|---|
| 2026 | 0–18.1% | 4 / 13 |
| 2027 | 0–16.3% | 4 / 13 |
| 2028 | 0–14.5% | 4 / 13 |
| 2029 | 0–12.7% | 4 / 13 |
| 2030 | 0–10.9% | 4 / 13 |
| 2031 | 0–9% | 4 / 13 |
| 2032 | 0–7.2% | 4 / 13 |
| 2033 | 0–5.4% | 4 / 13 |
| 2034 | 0–3.6% | 4 / 13 |
| 2035 | 0–1.8% | 4 / 13 |
| 2036 | 0% | 12 / 13 |
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
- 4× 9
- 0× 1
EU → Mercosur
- 10× 9
- 4× 3
- E× 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% | 0–20%1 line has no single published rate | 0–18.1% | 2036 | Brazil applied import duty, Res. Gecex 272/2021 Annexes II, V, VI, IX (MDIC), as of 5 October 2026 |
| Argentina | 2–10% | 0–9%1 line has no single published rate | 0–9% | 2036 | Argentina applied import duty (DIE), ARCA Arancel Integrado, as of 18 October 2026 |
| Uruguay | 0–10% | 0–9%1 line has no single published rate | 0–9% | 2036 | Uruguay applied import duty (Arancel Nacional, MEF), as of 10 February 2025Manual snapshotOlder than 180 days |
| Paraguay | 0–10% | 0–9%1 line has no single published rate | 0–9% | 2036 | 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: 10 lines
| Code | Description | Staging | Base | Applied MFN | 2026 | Final |
|---|---|---|---|---|---|---|
| 2836 20 00 | Disodium carbonate | 4 | 5.5% | 5.5% | 4.4% | Freefrom 2030 |
| 2836 30 00 | Sodium hydrogencarbonate "sodium bicarbonate" | 4 | 5.5% | 5.5% | 4.4% | Freefrom 2030 |
| 2836 40 00 | Potassium carbonates | 4 | 5.5% | 5.5% | 4.4% | Freefrom 2030 |
| 2836 50 00 | Calcium carbonate | 4 | 5% | 5% | 4% | Freefrom 2030 |
| 2836 60 00 | Barium carbonate | 4 | 5.5% | 5.5% | 4.4% | Freefrom 2030 |
| 2836 91 00 | Lithium carbonates | 4 | 5.5% | 5.5% | 4.4% | Freefrom 2030 |
| 2836 92 00 | Strontium carbonate | 4 | 5.5% | 5.5% | 4.4% | Freefrom 2030 |
| 2836 99 11 | Carbonates of magnesium and of copper | 0 | 3.7% | 3.7% | Free | Free |
| 2836 99 17 | Carbonates; commercial ammonium carbonate containing ammonium carbamate (excl. disodium carbonate, sodium hydrogencarbonate "sodium bicarbonate", potassium carbonates, calcium carbonate, barium carbonate, lithium carbonates, strontium carbonate, carbonates of magnesium and of copper and inorganic or organic compounds of mercury) | 4 | 5.5% | 5.5% | 4.4% | Freefrom 2030 |
| 2836 99 90 | Peroxocarbonates "percarbonates" | 4 | 5.5% | 5.5% | 4.4% | Freefrom 2030 |
Into Brazil from the EU: 13 lines
| Code | Description | Staging | Base | Applied MFN | 2026 | Final |
|---|---|---|---|---|---|---|
| 2836 20 10 | Anhydrous disodium carbonate | 10 | Free | 9% | Free | Freefrom 2036 |
| 2836 20 90 | Other disodium carbonate | 10 | 10% | 9% | 8.1% | Freefrom 2036 |
| 2836 30 00 | Sodium hydrogencarbonate (bicarbonate) of sodium | 10 | 20% | 20% | 18.1% | Freefrom 2036 |
| 2836 40 00 | Potassium carbonates | 10 | 10% | 9% | 8.1% | Freefrom 2036 |
| 2836 50 00 | Calcium carbonate | 10 | 10% | 9% | 8.1% | Freefrom 2036 |
| 2836 60 00 | Barium carbonate | 10 | 10% | 0 % / 9 % | 9% | Freefrom 2036 |
| 2836 91 00 | Lithium carbonates | 10 | 10% | 9% | 8.1% | Freefrom 2036 |
| 2836 92 00 | Strontium carbonate | 4 | 2% | Free | Free | Freefrom 2030 |
| 2836 99 11 | Magnesium carbonate with density < 200 kg/m 3 | 10 | 10% | 9% | 8.1% | Freefrom 2036 |
| 2836 99 12 | Zirconium carbonate | 4 | 2% | Free | Free | Freefrom 2030 |
| 2836 99 13 | Commercial ammonium carbonates and other ammonium carbonates | E | 10% | 17.5% | 17.5% | 17.5% |
| 2836 99 19 | Other carbonates | 10 | 10% | 9% | 8.1% | Freefrom 2036 |
| 2836 99 20 | Peroxocarbonates (percarbonates) | 4 | 2% | Free | Free | Freefrom 2030 |
Related products
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.