HS Code 28261910
Sodium silicon fluoride
Worked example
On an assessable value of BDT 100,000, the total duty and taxes payable on 28261910 would be approximately BDT 33,630.00, because the Total Tax Incidence is 33.63% of the assessable value.
What these figures mean
Sodium silicon fluoride is classified under HS code 28261910, which sits in heading 2826 (Fluorides; fluorosilicates, fluoroaluminates and other complex fluorine salts) 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 28261910 in 5 of 6 months, totalling 1,283,300 kg at an assessable value of BDT 122,715,783. That is an average of BDT 96 per kilogram — useful as a rough check on whether a declared value looks plausible. In May 2026 it was the 1,046th largest of 4,066 tariff lines by assessable value.
| Month | Net weight | Assessable value | Per kg |
|---|---|---|---|
| December 2025 | 164,300 kg | BDT 21,967,776 | BDT 134 |
| January 2026 | 419,000 kg | BDT 52,463,674 | BDT 125 |
| March 2026 | 40,000 kg | BDT 5,006,611 | BDT 125 |
| April 2026 | 271,000 kg | BDT 18,659,805 | BDT 69 |
| May 2026 | 389,000 kg | BDT 24,617,917 | BDT 63 |
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 28 contains 200 tariff lines, averaging 38.13%. At 33.63%, 28261910 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 2826 alone, rates run from 33.63% to 39.75% across 5 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.