HS Code 84818021
Hand diaphragm valve
Worked example
On an assessable value of BDT 100,000, the total duty and taxes payable on 84818021 would be approximately BDT 39,750.00, because the Total Tax Incidence is 39.75% of the assessable value.
What these figures mean
Hand diaphragm valve is classified under HS code 84818021, which sits in heading 8481 (Taps, cocks, valves and similar appliances for pipes, boiler shells, tanks, vats or the like, including pressure-reducing valves and thermostatically controlled valves) 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 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 December 2025 and May 2026, NBR recorded commercial imports under 84818021 in 6 of 6 months, totalling 4,272 kg at an assessable value of BDT 37,839,575. That is an average of BDT 8,858 per kilogram — useful as a rough check on whether a declared value looks plausible. In May 2026 it was the 3,012th largest of 4,066 tariff lines by assessable value.
| Month | Net weight | Assessable value | Per kg |
|---|---|---|---|
| December 2025 | 105 kg | BDT 1,075,694 | BDT 10,245 |
| January 2026 | 1,317 kg | BDT 29,588,676 | BDT 22,467 |
| February 2026 | 1,301 kg | BDT 3,255,404 | BDT 2,502 |
| March 2026 | 890 kg | BDT 2,525,805 | BDT 2,838 |
| April 2026 | 112 kg | BDT 1,058,273 | BDT 9,449 |
| May 2026 | 547 kg | BDT 335,723 | BDT 614 |
Bonded imports. A further 206 kg worth BDT 4,974,235 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 11.6% 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 84 contains 648 tariff lines, averaging 35.59%. At 39.75%, 84818021 sits above that average by 4.16 percentage points. It is the 76th 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.
Within heading 8481 alone, rates run from 13.58% to 64.25% across 17 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.