HS Code 28332910
Zinc sulphate
Worked example
On an assessable value of BDT 100,000, the total duty and taxes payable on 28332910 would be approximately BDT 9,500.00, because the Total Tax Incidence is 9.5% of the assessable value.
What these figures mean
Zinc sulphate is classified under HS code 28332910, 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 0%, Supplementary Duty of 0%, VAT of 0%, Advance Income Tax of 2%, Regulatory Duty of 0% and Advance Tax of 7.5%. Combined, these produce a Total Tax Incidence of 9.5%, 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 28332910 in 6 of 6 months, totalling 9,531,194 kg at an assessable value of BDT 1,522,787,274. That is an average of BDT 160 per kilogram — useful as a rough check on whether a declared value looks plausible. In May 2026 it was the 206th largest of 4,066 tariff lines by assessable value.
| Month | Net weight | Assessable value | Per kg |
|---|---|---|---|
| December 2025 | 2,644,054 kg | BDT 442,861,428 | BDT 167 |
| January 2026 | 1,367,350 kg | BDT 226,970,315 | BDT 166 |
| February 2026 | 1,099,000 kg | BDT 186,803,447 | BDT 170 |
| March 2026 | 714,510 kg | BDT 119,841,647 | BDT 168 |
| April 2026 | 1,865,250 kg | BDT 282,176,659 | BDT 151 |
| May 2026 | 1,841,030 kg | BDT 264,133,778 | BDT 143 |
Bonded imports. A further 12,500 kg worth BDT 2,700,345 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 0.2% 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 9.5%, 28332910 sits below that average by 28.63 percentage points. It is the 199th 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 51.58 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.