HS Code 84051000
Producer Gas Or Water Gas Generators; Acetylene Gas Generators, Etc
Worked example
On an assessable value of BDT 100,000, the total duty and taxes payable on 84051000 would be approximately BDT 28,730.00, because the Total Tax Incidence is 28.73% of the assessable value.
What these figures mean
Producer Gas Or Water Gas Generators; Acetylene Gas Generators, Etc is classified under HS code 84051000, which sits in heading 8405 (Generators for producer or water gas with or without their purifiers acetylene gas generators and similar water process gas generators, with or without their purifiers) of chapter 84 (Nuclear reactors, boilers, machinery and mechanical appliances; parts thereof).
Under the Bangladesh Operative Tariff 2026-2027 this line attracts Customs Duty of 1%, 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 28.73%, 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 84051000 in 6 of 6 months, totalling 87,757 kg at an assessable value of BDT 194,709,936. That is an average of BDT 2,219 per kilogram — useful as a rough check on whether a declared value looks plausible. In May 2026 it was the 991st largest of 4,066 tariff lines by assessable value.
| Month | Net weight | Assessable value | Per kg |
|---|---|---|---|
| December 2025 | 29,096 kg | BDT 32,418,210 | BDT 1,114 |
| January 2026 | 28,650 kg | BDT 108,773,740 | BDT 3,797 |
| February 2026 | 2,103 kg | BDT 7,591,728 | BDT 3,610 |
| March 2026 | 2,647 kg | BDT 6,182,738 | BDT 2,336 |
| April 2026 | 11,552 kg | BDT 13,142,657 | BDT 1,138 |
| May 2026 | 13,709 kg | BDT 26,600,863 | BDT 1,940 |
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 84 contains 648 tariff lines, averaging 35.59%. At 28.73%, 84051000 sits below that average by 6.86 percentage points. It is the 166th 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 32.35 points.
Within heading 8405 alone, rates run from 27.5% to 28.73% across 2 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.