HS Code 28332990
Sulphates; alums; peroxosulphates (persulphates), nes
Worked example
On an assessable value of BDT 100,000, the total duty and taxes payable on 28332990 would be approximately BDT 23,250.00, because the Total Tax Incidence is 23.25% of the assessable value.
What these figures mean
Sulphates; alums; peroxosulphates (persulphates), nes is classified under HS code 28332990, which sits in heading 2833 (Sulphates; alums; peroxosulphates (persulphates)) of chapter 28 (Inorganic chemicals; compounds of precious metals, rare-earth metals, radioactive elements or isotopes).
Under the Bangladesh Operative Tariff 2026-2027 this line attracts Customs Duty of 10%, 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 23.25%, 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 28332990 in 6 of 6 months, totalling 1,128,879 kg at an assessable value of BDT 93,933,637. That is an average of BDT 83 per kilogram — useful as a rough check on whether a declared value looks plausible. In May 2026 it was the 1,854th largest of 4,066 tariff lines by assessable value.
| Month | Net weight | Assessable value | Per kg |
|---|---|---|---|
| December 2025 | 507,761 kg | BDT 22,858,183 | BDT 45 |
| January 2026 | 387,704 kg | BDT 30,928,102 | BDT 80 |
| February 2026 | 13,657 kg | BDT 8,545,280 | BDT 626 |
| March 2026 | 199,061 kg | BDT 13,619,854 | BDT 68 |
| April 2026 | 15,150 kg | BDT 12,120,266 | BDT 800 |
| May 2026 | 5,546 kg | BDT 5,861,952 | BDT 1,057 |
Bonded imports. A further 778,775 kg worth BDT 26,613,719 entered under the bonded-warehouse regime in the same period — goods brought in duty-free as inputs on the undertaking that they leave again as exports, which in Bangladesh overwhelmingly means ready-made garments. Bonded entries account for 22.1% of the total value imported under this code, the rest entering commercially.
Import figures: NBR Import Statements (IM-4 commercial, IM-7 bonded), 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 28 contains 200 tariff lines, averaging 38.13%. At 23.25%, 28332990 sits below that average by 14.88 percentage points. It is the 193rd 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 37.83 points.
Within heading 2833 alone, rates run from 9.5% to 96.1% across 12 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.