Post, Courier or Sea Freight to Taiwan: What Changes

The tariff rate does not change with how goods travel, but almost everything else does. Whether you can use a simplified declaration, what documents are needed, what cannot be carried at all, and how long it takes are all determined by the route rather than the goods.

Last updated:2026-08

Three routes, three sets of rules

Air express, postal parcels and sea freight follow different clearance regimes. The tariff rate is unaffected — what changes is the procedure, the documentation and the time.

	Air express	Postal parcel	Sea freight
Governing rules	Air Express Consignment Clearance Regulations	Postal item clearance rules	Ordinary cargo clearance
Weight limit	70kg gross per piece	Per postal rules	None
Simplified declaration	For certain classes	Partially	Generally not
Time	Days	Slower	Weeks
Suits	Small volume, urgent	Occasional personal parcels	Bulk, heavy goods

The four classes of express consignment

Under Article 11(2) of the Air Express Consignment Clearance Regulations (空運快遞貨物通關辦法), inbound express consignments are divided by nature and value:

Code	Class	Customs value
X1	Express documents	Not applicable
X2	Low-value duty-free goods	NT$2,000 or less
X3	Low-value dutiable goods	NT$2,001 to NT$50,000
X4	High-value goods	Above NT$50,000

NT$50,000 is the second threshold, and it is far less known than the first. Most people are aware of the NT$2,000 exemption; few realise that crossing NT$50,000 moves a consignment out of simplified declaration entirely and into the ordinary import declaration process, with the documentation and tariff code requirements that come with it.

What simplified declaration removes

Under Article 12 of the same regulations, simplified declaration applies to consignments outside those requiring an ordinary declaration. What it removes is declaration fields:

• X1 express documents may omit sender and consignee names and addresses, country of production, value, tariff code, rate and tax ID
• X2 low-value duty-free goods may omit the tariff code, rate and tax ID

"May omit the tariff code" matters for personal imports. A duty-free low-value parcel does not require you to classify the goods. Once a consignment crosses into X3 or X4, the code must be declared — and the consequences of getting it wrong attach to the declarant. See The complete HS Code guide and What tariff misclassification costs.

Goods excluded from express consignment

Under Article 6, express consignments must be 70kg gross or less per piece and must not comprise:

• Prohibited imports
• Controlled items
• Goods infringing intellectual property
• Fresh agricultural, fishery and livestock products
• Live plants
• Protected wildlife and their products

Fresh produce and live plants are what personal shoppers hit most often — and it is not a documentation problem but a route problem. See What you cannot ship to Taiwan.

When sea freight becomes worthwhile

Sea freight has a low per-unit rate and a set of fixed costs that do not scale with volume: consolidation fees, terminal handling, brokerage and drayage.

Cost	Air express	Sea LCL
Freight	By weight or volumetric weight	By volume
Fixed charges	Few	Consolidation, terminal handling, drayage
Brokerage	Often bundled	Usually separate
Time	Days	Weeks
Capital tied up	Short	Long

The comparison that matters is total landed cost, not the freight rate. Below a certain volume the fixed charges spread across few goods exceed what air express would have cost outright.

Time is a cost too. The extra two to three weeks can matter more than the freight difference for anything with a selling season.

Where postal parcels sit

Postal consignments run through the postal system, procedurally between express and ordinary cargo. They are cheap for occasional small items; tracking and timing are less predictable, and resolving a query involves a longer chain.

The tax treatment is identical. Customs value is still goods plus freight plus insurance, the NT$2,000 threshold still applies, and exemption counts are still consumed.

Choosing

Three questions decide it:

Is any piece over 70kg? If so, express is unavailable regardless of anything else.

Is the consignment over NT$50,000? If so, expect an ordinary declaration and prepare tariff codes and documentation, whichever route you use.

Does the volume absorb sea freight's fixed costs? If not, the lower rate is illusory.

Everything else — rate, customs value, exemption — is the same across all three. See the Taiwan import tax guide and the import duty calculator.

The declaration burden scales, not the rate

A point worth making explicitly, because it drives how people should plan larger purchases.

Moving from X2 to X3 to X4 does not change the tariff rate by a single percentage point. What changes is what you must know and prove: the tariff code, the product specification, the supporting documentation. A NT$60,000 consignment and a NT$1,500 one of the same goods carry the same rate and entirely different amounts of work.

The practical consequence is that splitting a large order across consignments has real procedural value beyond the exemption — but splitting must reflect genuine separate purchases. Structuring shipments purely to stay below a declaration threshold is a different matter from ordering at different times for ordinary reasons.

Volumetric weight catches air shipments

Air freight and express are charged on the greater of actual weight and volumetric weight, which is derived from the dimensions of the package.

Light but bulky goods are charged on volume. A box of cushions, packaging materials or anything with air inside it will be billed well above what the scale says. This is not a customs matter, but it feeds directly into the customs value because freight is part of it — see How customs value is calculated.

The practical consequence is that the tax on a bulky consignment is higher than its weight suggests, because the inflated freight enters both the duty base and the business tax base.

Sea freight is charged on volume as standard, so the same goods behave more predictably there — which is part of why the crossover point favours sea freight sooner for bulky items than for dense ones.

Further reading

For buying from abroad generally, see Shopping overseas and importing to Taiwan. For real-name authentication, which courier parcels require, see EZ WAY explained. For the frequency limit on the exemption, see Taiwan's six-time rule.

Primary sources: Air Express Consignment Clearance Regulations (空運快遞貨物通關辦法) and the Customs Administration express consignment section (財政部關務署快遞貨物專區).

Frequently asked questions

Is there a weight limit on express consignments to Taiwan?

Yes. Under Article 6 of the Air Express Consignment Clearance Regulations, each piece or bag must be 70kg gross or less. Above that, the goods cannot use the simplified express procedure and must be declared as ordinary cargo.

What do X1, X2, X3 and X4 mean?

They are the four classes of inbound express consignment. X1 is express documents, X2 low-value duty-free goods at a customs value of NT$2,000 or less, X3 low-value dutiable goods from NT$2,001 to NT$50,000, and X4 high-value goods above NT$50,000.

What happens above NT$50,000?

The consignment falls into X4 and cannot use a simplified declaration. It must be declared on an ordinary import declaration with full product details and tariff codes, which in practice means more documentation and a longer clearance time.

Which goods cannot travel by express courier?

Prohibited items, controlled items, goods infringing intellectual property, fresh agricultural fishery and livestock products, live plants, and protected wildlife and their products are all excluded from express consignment clearance.

When does sea freight actually become cheaper?

Once volume is large enough to absorb the fixed costs — consolidation fees, terminal handling, brokerage and drayage — which do not scale with weight. Below that point the per-unit cost of sea freight exceeds air express despite the lower freight rate.