What is the US import duty for HS code 8540.79?

The US general (normal trade relations) rates under this subheading range: 3.3% - 3.7%. Preference programs and Section 232/301 surcharges can change the effective rate; see the HTS lines for detail.

What is the UK commodity code for 8540.79?

The UK extends 8540.79 to 3 declarable 10-digit commodity codes, starting with 8540790000. The full code goes on the UK customs declaration.

Chapter 85 · Electrical machinery; electronics; sound and TV equipment · Section 16

HS Code 8540.79

Q: What is HS code 8540.79?

HS code 8540.79 covers: Other. It belongs to chapter 85 (Electrical machinery; electronics; sound and TV equipment) of the Harmonized System.

Other

Heading 8540: Thermionic, cold cathode or photocathode tubes (for example, vacuum or vapor or gas filled tubes, mercury arc rectifying tubes, cathode-ray tubes, television camera tubes); parts thereof

US duty (general)

3.3% - 3.7%

US HTS lines

EU CN codes

UK commodity codes

Unit

No.

US HTS + UK Tariff v4.0.1596 · updated 2026-09-10 · sources

United States - HTS lines under 8540.79

Source: official Harmonized Tariff Schedule (USITC). "General" is the normal-trade-relations rate; "Special" lists preference programs; "Other" is the column-2 rate. Additional Section 232/301 duties may apply on top.

HTS code	Description	General	Special	Other	Unit
8540.79.10	Other > Klystrons	3.3%	Free (A+,AU,BH,CL,CO,D,E,IL, JO,KR,MA, OM,P,PA,PE,S,SG)	35%	No.
8540.79.20	Other > Other	3.7%	Free (A+,AU,BH,CL,CO,D,E,IL,JO,KR,MA, OM,P,PA,PE,S,SG)	35%	No.

Estimate the US duty runs in your browser · no caps

Enter the customs value (and quantity, when a rate is per-unit) to estimate the general-rate duty per HTS line. Estimates exclude Section 232/301 surcharges, MPF/HMF and fees. Not a customs ruling.

Customs value (USD) Quantity (No.)

European Union - CN codes under 8540.79

Source: EU Combined Nomenclature (Eurostat, © European Union, reused per Decision 2011/833/EU). Duty rates and measures live in TARIC; each code links to the official consultation.

CN code	Description
8540 79 00	Other	EU duty (TARIC) →

United Kingdom - commodity codes under 8540.79

Source: UK Integrated Online Tariff (Open Government Licence v3.0). Declarable 10-digit codes go on the customs declaration; check the official page for the current duty and VAT measures.

Commodity code	Description
8540 79 00 00	Other	UK duty & VAT →
8540 79 00 10	For use in certain types of aircraft	UK duty & VAT →
8540 79 00 90	Other	UK duty & VAT →

Not a customs ruling. Classification is determined by the importing country's customs authority and depends on the exact product. This page is reference information from official published schedules, not legal advice. For a binding decision, request a ruling (US: CBP CROSS · UK: HMRC ATaR · EU: BTI).

Other subheadings in 8540

8540.00 8540 Thermionic, cold cathode or photocathode valves and tubes (for example, vacuum or vap 8540.11 Color 8540.12 Monochrome 8540.20 Television camera tubes; image converters and intensifiers; other photocathode tubes 8540.40 Data/graphic display tubes, monochrome; data/graphic display tubes, color, with a phosphor 8540.60 Other cathode-ray tubes 8540.71 Magnetrons 8540.79 Other 8540.81 Receiver or amplifier tubes 8540.89 Other 8540.91 Of cathode-ray tubes 8540.99 Other

Sources: U.S. International Trade Commission, Harmonized Tariff Schedule (public domain) · EU Combined Nomenclature © European Union, Eurostat (Decision 2011/833/EU) · UK Integrated Online Tariff, contains public sector information licensed under the Open Government Licence v3.0. Data refreshed weekly. Details on About & Data Sources.