HS Code 28151100
Sodium Hydroxide (Caustic Soda), Solid
Worked example
On an assessable value of BDT 100,000, the total duty and taxes payable on 28151100 would be approximately BDT 64,250.00, because the Total Tax Incidence is 64.25% of the assessable value.
What these figures mean
Sodium Hydroxide (Caustic Soda), Solid is classified under HS code 28151100, which sits in heading 2815 (Sodium hydroxide (caustic soda); potassium hydroxide (caustic potash) peroxides of sodium or potassium) 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 25%, Supplementary Duty of 0%, VAT of 15%, Advance Income Tax of 5%, Regulatory Duty of 5% and Advance Tax of 7.5%. Combined, these produce a Total Tax Incidence of 64.25%, 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 28151100 in 6 of 6 months, totalling 123,786 kg at an assessable value of BDT 38,980,618. That is an average of BDT 315 per kilogram — useful as a rough check on whether a declared value looks plausible. In May 2026 it was the 2,988th largest of 4,066 tariff lines by assessable value.
| Month | Net weight | Assessable value | Per kg |
|---|---|---|---|
| December 2025 | 1,594 kg | BDT 1,032,332 | BDT 648 |
| January 2026 | 14,785 kg | BDT 5,648,539 | BDT 382 |
| February 2026 | 30,356 kg | BDT 16,783,333 | BDT 553 |
| March 2026 | 6,798 kg | BDT 7,369,579 | BDT 1,084 |
| April 2026 | 68,543 kg | BDT 7,786,136 | BDT 114 |
| May 2026 | 1,710 kg | BDT 360,699 | BDT 211 |
Bonded imports. A further 3,110,300 kg worth BDT 208,086,739 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 84.2% 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 64.25%, 28151100 sits above that average by 26.12 percentage points. It is the 4th most heavily taxed line in the chapter.
Across the whole Operative Tariff the mean is 61.08%, so this line is dearer than the typical import by 3.17 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.