HS Code 25280000
Natural borates and concentrates thereof (whether or not calcined) but not including ..H
Worked example
On an assessable value of BDT 100,000, the total duty and taxes payable on 25280000 would be approximately BDT 39,750.00, because the Total Tax Incidence is 39.75% of the assessable value.
What these figures mean
Natural borates and concentrates thereof (whether or not calcined) but not including ..H is classified under HS code 25280000, which sits in heading 2528 (Natural borates and concentrates thereof (whether or not calcined), but not including borates separated from natural brine; natural boric acid containing not more than 85 % of H3BO3 calculated on the dry weight) of chapter 25 (Salt; sulphur; earths and stone; plastering materials, lime and cement).
Under the Bangladesh Operative Tariff 2026-2027 this line attracts Customs Duty of 10%, 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 39.75%, 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 January 2026 and January 2026, NBR recorded commercial imports under 25280000 in 1 of 6 months, totalling 5 kg at an assessable value of BDT 3,205. That is an average of BDT 641 per kilogram — useful as a rough check on whether a declared value looks plausible. In January 2026 it was the 4,031st largest of 4,179 tariff lines by assessable value.
| Month | Net weight | Assessable value | Per kg |
|---|---|---|---|
| January 2026 | 5 kg | BDT 3,205 | BDT 641 |
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 25 contains 79 tariff lines, averaging 52.49%. At 39.75%, 25280000 sits below that average by 12.74 percentage points. It is the 32nd 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 21.33 points.
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.