HS Code 28112200
Silicon Dioxide
Worked example
On an assessable value of BDT 100,000, the total duty and taxes payable on 28112200 would be approximately BDT 33,630.00, because the Total Tax Incidence is 33.63% of the assessable value.
What these figures mean
Silicon Dioxide is classified under HS code 28112200, which sits in heading 2811 (Inorganic acids and other inorganic oxygen compounds of non-metals; n.e.c. in heading no. 2806 to 2810) 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 5%, Supplementary Duty of 0%, VAT of 15%, Advance Income Tax of 5%, Regulatory Duty of 0% and Advance Tax of 7.5%. Combined, these produce a Total Tax Incidence of 33.63%, 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 28112200 in 6 of 6 months, totalling 2,397,833 kg at an assessable value of BDT 515,028,497. That is an average of BDT 215 per kilogram — useful as a rough check on whether a declared value looks plausible. In May 2026 it was the 397th largest of 4,066 tariff lines by assessable value.
| Month | Net weight | Assessable value | Per kg |
|---|---|---|---|
| December 2025 | 463,518 kg | BDT 94,918,928 | BDT 205 |
| January 2026 | 388,610 kg | BDT 81,394,312 | BDT 209 |
| February 2026 | 445,523 kg | BDT 112,410,214 | BDT 252 |
| March 2026 | 241,339 kg | BDT 57,864,443 | BDT 240 |
| April 2026 | 255,184 kg | BDT 49,277,395 | BDT 193 |
| May 2026 | 603,659 kg | BDT 119,163,205 | BDT 197 |
Bonded imports. A further 860,089 kg worth BDT 131,199,234 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 20.3% 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 33.63%, 28112200 sits below that average by 4.5 percentage points. It is the 126th 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 27.45 points.
Within heading 2811 alone, rates run from 33.63% to 58.13% across 7 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.