How much import duty for Chapter 84 “Nuclear Reactors, Boilers, Machinery and Mechanical Appliances; Parts Thereof”? Rates and import regulations for 900 tariff lines

Quick answer: How much duty for Chapter 84?

Chapter 84 “Nuclear Reactors, Boilers, Machinery and Mechanical Appliances; Parts Thereof” has 900 tariff lines; the most common Column 1 rate is 0%.Of these, 261 tariff lines are 0% (29%), and the highest ad valorem rate is 17.5%.167 tariff lines carry an import regulation code; the most common is C02 (74 tariff lines).On import, business tax is also levied on the dutiable value plus customs duty (and commodity tax, tobacco and alcohol tax, etc., where applicable); see the FAQ below for the small-value duty exemption. The actual amount payable is subject to Customs' final determination.

How are tariff rates distributed across Chapter 84's tariff lines?

Calculated from each tariff line's Column 1 rate, 900 tariff lines in total. Source: HowBridge Tariff Database (synced with Customs Administration, Ministry of Finance tariff data), compiled 2026-09-16.

What import regulation codes commonly appear in Chapter 84?

Import regulation codes are marked on the tariff line and indicate inspection, quarantine, permit, or mainland China import controls that may need to be handled before import. A code may apply only to some of the goods under that tariff line — click into the tariff line for the full description. A tariff line with no code means import is permitted and no permit is required from a trade-control standpoint, but this does not mean the goods are exempt from inspection, quarantine, or duty.

C02 Some of the commodities under this item subject to legal import inspection announced by the Bureau of Standa… 74 tariff lines
375 進口經勞動部指定或公告指定之機械、設備或器具（以下簡稱受指定產品），應取得勞動部核發之登錄完成通知書，或勞動部認可之型式驗證機構核發之型式驗證合格證書，並應申報填列登錄完成通知書號碼（十四碼）或型式驗證合格證明書號碼… 65 tariff lines
MW0 Importation of Mainland China products is prohibited. 22 tariff lines
581 Approval from the Nuclear Safety Commission is required. 5 tariff lines
555 Importing window-type air conditioners (including split-type) with a cooling capacity below 7.1kw and using … 5 tariff lines
M27 Those who import products made in mainland China, must obtain approval from the Industrial Development Admin… 4 tariff lines

MW0 does not mean nothing can be shipped at all. MW0 = import from mainland China is prohibited. Exception: small quantities of mainland Chinese goods in Chapters 25–97 may be imported without an import permit if the whole declaration is within CIF NT$32,000 and each single product is within 24 pieces (40 kg if it cannot be counted; a single product is identified by its model number, or by the line item on the declaration if there is no model number, and may not be split by size, specification or colour; stone under heading 6802 and tiles under heading 6907 must meet both 24 pieces and 40 kg). Electric motorcycles, electric bicycles and their controllers (tariff lines 8711.60.10, 8711.60.20 and 8543.70.99.50) are excluded, and Chapters 1–24 do not qualify. Inspection, quarantine and other import requirements must still be met separately. This does not mean the goods are duty-free.

This chapter has 76 tariff lines marked C01 or C02, which are subject to mandatory import inspection by the Bureau of Standards, Metrology and Inspection (BSMI). For how to determine whether inspection applies and whether there is a personal-use exemption threshold, see the BSMI Commodity Inspection Guide.

What tariff lines are in Chapter 84?

8401 核子反應器；核子反應器用之非輻射性燃料元件（匣式）；同位素分離機及設備

8402 水蒸汽或其他蒸汽發生鍋爐（不包括同時能產生低壓蒸汽者之中央系統熱水爐）；過熱水鍋爐

8403 中央暖氣鍋爐，第８４０２節除外

8404 第８４０２或８４０３節鍋爐之輔助設備（例如︰節熱器、過熱器、除煙灰器及氣體回收器）；水蒸汽或其他蒸汽動力組用之冷凝器

8405 發生爐煤氣或水煤氣之發生器，不論是否附有潔淨器者均在內；乙炔發生器及類似水化氣體發生器，不論是否附有潔淨器者均在內

8406 水蒸汽渦輪機及其他蒸汽渦輪機

8407 往復式或旋轉式火花點火內燃活塞引擎

8408 壓縮點火內燃活塞引擎（柴油或半柴油引擎）

8409 專用或主要用於第８４０７或８４０８節引擎用零件

8410 水力渦輪機、水輪及其調整器

8411 渦輪噴射引擎、螺旋槳推動用渦輪機及其他燃氣渦輪機

8412 其他引擎及發動機

8413 液體泵，無論是否裝有計量裝置；液體昇送器

8414 空氣泵或真空泵、空氣壓縮機或其他氣體壓縮機及風扇；含有風扇之通風罩或再循環罩，不論是否具有過濾器；氣密生物安全櫃，不論是否具有過濾器

8415 空氣調節器，具有電動風扇及變換溫度及濕度元件，其不能單獨調節濕度者亦在內

8416 使用液體燃料、粉狀固體燃料或氣體燃料之爐用燃燒器；機械加煤機，包括其機械式爐篦、機械除灰器及類似用具

8417 非電熱式工業或實驗室用爐及烘烤箱，包括焚化爐

8418 冷藏機、冷凍機及其他冷藏或冷凍設備，使用電力或其他能源者；熱力泵，第８４１５節之空氣調節器除外

8419 機器、工廠或實驗室設備，不論是否用電熱方法（第８５１４節之電爐、烘箱及其他設備除外），利用溫度變化如加熱、烹煮、烘烤、蒸餾、精餾、消毒、低溫殺菌、蒸煮、乾燥、蒸發、汽化、凝聚或冷卻等方法處理材料，但不包括家庭用者；非電熱式即熱型或儲存型熱水器

8420 砑光機或其他滾軋機，金屬或玻璃加工用者除外，及其滾筒

8421 離心分離機，包括離心式脫水機；液體或氣體過濾及淨化機具

8422 洗碗碟機；瓶及其他容器洗滌及乾燥機器；瓶、罐、箱、袋或其他容器之盛裝、封口、封緘或貼標籤機器；瓶、大口瓶、管及類似容器之封蓋機器；其他包裝或包紮機器（包括熱縮包紮機器）；飲料充氣機

This chapter has more than 250 tariff lines; use the tariff search for the rest

What's the difference between Column 1, Column 2, and Column 3 tariff rates?

General Rule 2 of the Customs Import Tariff divides rates into 3 columns: Column 1 applies to imports from World Trade Organization members or from countries or regions with reciprocal treatment toward Taiwan; Column 2 applies only to “specific” imports in two situations: specific goods from certain least-developed or developing countries or regions, or specific goods from countries or regions that have signed a free trade agreement or economic cooperation agreement with Taiwan; goods that do not qualify for either of the first two columns are subject to Column 3. Where both Column 1 and Column 2 could apply, the lower rate is used. Mainland China is a World Trade Organization member and generally falls under Column 1; Column 2 applies to mainland China only for goods on the ECFA Early Harvest list.

A tariff book and rate table spread open on a desk, with a magnifying glass and a box awaiting customs clearance nearby
A tariff line's rate must be read together with the applicable column and any import regulations.

The chapter and tariff-line pages on this site display Column 1 rates. Column 2 marks eligible countries in the tariff table using country codes, for example “Duty-free (PA,GT,NI,SV,HN,NZ,SG)”; the codes are only labels in the tariff table, and some of the underlying agreements have been suspended or terminated (e.g., Nicaragua, El Salvador, Honduras) — actual eligibility is subject to Customs Administration announcements. Miscellaneous items in postal parcels have separate rules: when the dutiable value exceeds the duty-free threshold, a 5% rate applies, except for tobacco, alcohol, and goods subject to a tariff rate quota; however, if a single item or items under the same tariff line total more than NT$2,000, they are not treated as miscellaneous items and are instead taxed at each tariff line's own rate (General Rule 5; Regulations Governing Customs Clearance of Postal Parcels, Articles 8 and 9). This 5% rule only covers postal parcels and passengers' goods; express shipments are calculated by each tariff line's rate.

Frequently Asked Questions

What taxes apply when importing Chapter 84 goods into Taiwan?
There are generally three charges:
  • Customs duty: for ad valorem tariff lines, dutiable value × rate; for specific-duty tariff lines, calculated by quantity or weight (imports from mainland China generally apply Column 1).
  • Business tax: levied on the dutiable value plus customs duty, collected by Customs on the government's behalf (Value-added and Non-value-added Business Tax Act Article 20 and Article 41); goods also subject to commodity tax or tobacco and alcohol tax have those amounts added to the tax base as well.
  • Trade Promotion Service Fee: the statutory cap is 4.25 per 10,000 of the goods' value (Foreign Trade Act Article 21); it is currently charged at 4 per 10,000 of the dutiable value, and waived when the amount payable does not exceed NT$100.
Small-value imports have a separate duty exemption threshold — see the next question.
Is there a duty exemption threshold for small-value imports? How are amounts over the threshold taxed?
Yes. If a single shipment's dutiable value is NT$2,000 or less, it is exempt from customs duty and from the business tax and commodity tax that Customs collects on the government's behalf, except for tobacco, alcohol, and agricultural products subject to a tariff rate quota (Ministry of Finance Announcement Tai-Cai-Guan-Zi No. 1061018778 dated September 7, ROC year 106 (2017); for postal parcels, see also Article 7 of the Regulations Governing Customs Clearance of Postal Parcels). Three things to note:
  • If the same taxpayer receives duty-free release more than 6 times within the same half-year period (January–June or July–December), imports after that point in the period are no longer duty-exempt (Ministry of Finance Order Tai-Cai-Guan-Zi No. 1061011007 dated May 26, ROC year 106 (2017)).
  • A single express shipment may not be split and declared separately (Article 14 of the Regulations Governing Customs Clearance of Air Express Cargo).
  • When a postal parcel exceeds the threshold, the entire parcel is taxed in full, not just the amount over the threshold (Article 8 of the Regulations Governing Customs Clearance of Postal Parcels).
How many of Chapter 84's tariff lines carry a 0% duty rate?
Of this chapter's 900 tariff lines, 261 have a Column 1 rate of 0%, or 29%. A 0% rate only means customs duty is zero: business tax generally still applies on import (see the previous question for the small-value exemption), and any import regulations on the tariff line (inspection, quarantine, permit documents) are not waived because of it.
Can Chapter 84 goods be shipped from mainland China to Taiwan?
You need to check line by line. This chapter has 22 tariff lines marked MW0 (import of mainland China goods not permitted), but MW0 does not mean nothing can be shipped at all. MW0 = import from mainland China is prohibited. Exception: small quantities of mainland Chinese goods in Chapters 25–97 may be imported without an import permit if the whole declaration is within CIF NT$32,000 and each single product is within 24 pieces (40 kg if it cannot be counted; a single product is identified by its model number, or by the line item on the declaration if there is no model number, and may not be split by size, specification or colour; stone under heading 6802 and tiles under heading 6907 must meet both 24 pieces and 40 kg). Electric motorcycles, electric bicycles and their controllers (tariff lines 8711.60.10, 8711.60.20 and 8543.70.99.50) are excluded, and Chapters 1–24 do not qualify. Inspection, quarantine and other import requirements must still be met separately. This does not mean the goods are duty-free.Another 4 tariff lines carry MP1 (conditional import of mainland China goods permitted), which requires meeting the requirements in the International Trade Administration's Compilation Table of Conditionally Permitted Mainland China Goods and Import Management Regulations.
Within the same chapter, how do I confirm which tariff line my item falls under?
Under the General Rules for the Interpretation of the Customs Import Tariff, section and chapter titles are for reference only — classification is determined by the tariff line description and the section and chapter notes (Rule 1). If the description and notes do not settle it, then unfinished goods and mixtures (Rule 2), the more specific description, essential character, or classification under the last heading in order (Rule 3), and the most akin heading (Rule 4) apply in turn, with containers and packaging governed separately by Rule 5; when narrowing down to an “item” level, Rule 6 compares only items at the same level. If still uncertain, the taxpayer or their agent may apply to Customs for a binding tariff ruling before the goods are imported, and Customs will respond in writing (Customs Act Article 21); when the goods actually arriving match the ruling, Customs must classify them under the ruled tariff line, except where the applicant provided incorrect or false information (Regulations Governing the Advance Ruling on Tariff Classification of Imported Goods, Article 10).

Where does this page's legal basis and data come from?

Usage limitation: The statistics on this page are compiled by the HowBridge Tariff Database for reference only; tariff line classification, applicable rates, and import regulations are subject to announcements from the Customs Administration (Ministry of Finance) and the International Trade Administration (Ministry of Economic Affairs), and to Customs' final determination. This page does not constitute a case-specific tariff classification opinion.

Related reading

Tariff Chapter Overview The Complete Guide to Looking Up Taiwan Customs Duties What Is a CCC Code? Import Tax Calculator Tariff Line Search BSMI Commodity Inspection Guide Taiwan's Prohibited and Restricted Import List How do I look up the CCC tariff code? How are import taxes calculated?

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