HS Code 84147000
Gas-tight biological safety cabinets
Worked example
On an assessable value of BDT 100,000, the total duty and taxes payable on 84147000 would be approximately BDT 28,730.00, because the Total Tax Incidence is 28.73% of the assessable value.
What these figures mean
Gas-tight biological safety cabinets is classified under HS code 84147000, which sits in heading 8414 (Air or vacuum pumps, air or other gas compressors and fans; ventilating or recycling hoods incorporating a fan; gas-tight biological safety cabinets whether or not fitted with filters) 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 84147000 in 6 of 6 months, totalling 20,774 kg at an assessable value of BDT 40,748,210. That is an average of BDT 1,962 per kilogram — useful as a rough check on whether a declared value looks plausible. In May 2026 it was the 2,523rd largest of 4,066 tariff lines by assessable value.
| Month | Net weight | Assessable value | Per kg |
|---|---|---|---|
| December 2025 | 3,433 kg | BDT 18,702,039 | BDT 5,448 |
| January 2026 | 7,683 kg | BDT 13,433,550 | BDT 1,748 |
| February 2026 | 1,615 kg | BDT 1,597,121 | BDT 989 |
| March 2026 | 890 kg | BDT 2,194,587 | BDT 2,466 |
| April 2026 | 1,557 kg | BDT 3,354,521 | BDT 2,154 |
| May 2026 | 5,596 kg | BDT 1,466,392 | BDT 262 |
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%, 84147000 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 8414 alone, rates run from 28.73% to 135.91% across 20 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.