HS Code 31043000
Potassium Sulphate
Worked example
On an assessable value of BDT 100,000, the total duty and taxes payable on 31043000 would be approximately BDT 12,500.00, because the Total Tax Incidence is 12.5% of the assessable value.
What these figures mean
Potassium Sulphate is classified under HS code 31043000, which sits in heading 3104 (Fertilizers; mineral or chemical, potassic) of chapter 31 (Fertilisers).
Under the Bangladesh Operative Tariff 2026-2027 this line attracts Customs Duty of 0%, Supplementary Duty of 0%, VAT of 0%, Advance Income Tax of 5%, Regulatory Duty of 0% and Advance Tax of 7.5%. Combined, these produce a Total Tax Incidence of 12.5%, which is the figure to multiply by the assessable value of your consignment.
The assessable value is normally the CIF value of the goods plus landing charges. Duties and taxes are applied in a defined order rather than simply added together, which is why the TTI is not the plain sum of the individual rates.
Recorded imports
Between December 2025 and May 2026, NBR recorded commercial imports under 31043000 in 5 of 6 months, totalling 360,817 kg at an assessable value of BDT 49,673,553. That is an average of BDT 138 per kilogram — useful as a rough check on whether a declared value looks plausible. In May 2026 it was the 3,473rd largest of 4,066 tariff lines by assessable value.
| Month | Net weight | Assessable value | Per kg |
|---|---|---|---|
| December 2025 | 200 kg | BDT 95,818 | BDT 479 |
| January 2026 | 335,491 kg | BDT 45,998,266 | BDT 137 |
| February 2026 | 24,750 kg | BDT 3,367,292 | BDT 136 |
| March 2026 | 326 kg | BDT 156,762 | BDT 481 |
| May 2026 | 50 kg | BDT 55,415 | BDT 1,108 |
Import figures: NBR Import Statements (IM-4 commercial), December 2025 – May 2026. Assessable value is the customs value on which duty is charged, not the retail or invoice price.
Source: NBR Operative Tariff 2026-2027. The full schedule was reconciled against NBR's online duty calculator before publication; figures were last checked against NBR's live operative tariff search on 10 October 2026.
How this line compares
Chapter 31 contains 26 tariff lines, averaging 14.63%. At 12.5%, 31043000 sits below that average by 2.13 percentage points. It is the 4th most heavily taxed line in the chapter.
Across the whole Operative Tariff the mean is 61.08%, so this line is cheaper than the typical import by 48.58 points.
Within heading 3104 alone, rates run from 7.5% to 12.5% across 3 lines. Classification inside a single heading can change the bill substantially, so confirm the eight-digit code rather than working from the four-digit heading.
No supplementary duty applies here, which is the normal case — SD is zero on 78% of the tariff. Where it does apply it usually dominates every other component.