HS Code 85407900
Microwave Tubes (Excl. Magnetrons, Klystrons And Grid-Controlled Tubes)
Worked example
On an assessable value of BDT 100,000, the total duty and taxes payable on 85407900 would be approximately BDT 39,750.00, because the Total Tax Incidence is 39.75% of the assessable value.
What these figures mean
Microwave Tubes (Excl. Magnetrons, Klystrons And Grid-Controlled Tubes) is classified under HS code 85407900, which sits in heading 8540 (Thermionic, cold cathode or photo-cathode valves and tubes (e.g. vacuum, vapour, gas filled valves and tubes, mercury arc rectifying valves and tubes, cathode-ray and television camera tubes)) of chapter 85 (Electrical machinery and equipment and parts thereof; sound and television recorders and reproducers).
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 April 2026, NBR recorded commercial imports under 85407900 in 4 of 6 months, totalling 174 kg at an assessable value of BDT 5,611,613. That is an average of BDT 32,251 per kilogram — useful as a rough check on whether a declared value looks plausible. In April 2026 it was the 2,583rd largest of 4,161 tariff lines by assessable value.
| Month | Net weight | Assessable value | Per kg |
|---|---|---|---|
| December 2025 | 60 kg | BDT 2,451,795 | BDT 40,863 |
| February 2026 | 26 kg | BDT 11,890 | BDT 457 |
| March 2026 | 36 kg | BDT 1,245,407 | BDT 34,595 |
| April 2026 | 52 kg | BDT 1,902,521 | BDT 36,587 |
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 85 contains 412 tariff lines, averaging 52.09%. At 39.75%, 85407900 sits below that average by 12.34 percentage points. It is the 197th 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 8540 alone, rates run from 39.75% to 64.25% across 11 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.