How to Read an Import Declaration? Complete Guide to Claiming Input VAT from Customs Tax Certificates
When a company imports goods, the business tax collected by Customs can be credited as input business tax (VAT) using the "deduction copy of the Customs-collected Business Tax Payment Certificate". However, the "goods description" and "CCC tariff code" on the import declaration must match your line of business; otherwise the National Taxation Bureau will treat the goods as "not used for your own business" and disallow the input tax, denying the credit (Business Tax Act Article 19), and may even impose a penalty of 5 times the evaded tax for falsely declaring the goods description (Customs Anti-Smuggling Act Article 37). That is why reporting the correct tariff code at the time of customs clearance is the key to whether your company can legally claim the credit.
Why the tariff code determines whether your company can claim input tax
When the National Taxation Bureau audits input tax, it uses the "goods description" and "CCC tariff code" on the import declaration to determine whether the imported goods are genuinely required for the company's own line of business. If they don't match, the input tax can't be claimed.
⚠️ Case study: a company selling clothing declares its import declaration goods description as "stationery" (tariff 9608) → the National Taxation Bureau deems it unrelated to the company's line of business, not used for its own business, and disallows all input tax, denying the credit (Business Tax Act Article 19, Paragraph 1, Subparagraph 2); if the goods description was falsely declared to obtain a lower tax rate, it also constitutes false declaration under Customs Anti-Smuggling Act Article 37.
✓ HowBridge's AEO-certified customs broker team, with ten years of experience, understands every tariff code and helps businesses "declare with the right recommendation, declare correctly". It can also issue formal invoices and apply for the customs tax certificate and import declaration, ensuring the documents can legally serve as input tax—competitors only ship your goods; HowBridge understands the accounting.
How to read an import declaration (N1 / N5 field breakdown)
The most common Taiwan import declaration is the N5 (consolidated document) declaration, with a 14-digit declaration number. It is divided into four main sections:
① Header section
| Declaration number | 14-digit identifier (receiving customs office 2 + exporting customs office 2 + year 2 + container number 4 + serial number 4), assigned by the customs system |
| Declaration type | N1 general import / N5 consolidated document (integrated invoice and packing list) |
| Clearance mode | C1 automatic release without review or inspection / C2 document review / C3 physical inspection |
| Acceptance date / import date | Date Customs accepted the declaration; date the goods arrived in Taiwan |
② Taxpayer section
| Taxpayer name | Name of the importing company (must be recorded on the accounting document) |
| Unified business number | The company's 8-digit UBN, the key identifier for claiming input tax |
| Address / customs broker code | Registered address; code of the appointed customs broker |
③ Goods information section (one set per item)
| Goods description | Chinese and English product name; must match the actual goods and your line of business |
| Tariff code CCC | 11-digit classification code; determines the customs duty rate and import regulations |
| Duty-paying value CIF | Landed value = goods price + freight + insurance; the basis for calculating most taxes and fees |
| Country of origin / seller / quantity and weight | Country of production (affects preferential duties), foreign seller, quantity, net and gross weight |
④ Tax and fee calculation section
| Tax / fee | Calculation formula |
|---|---|
| Customs duty | Duty-paying value (DPV) × customs duty rate (per CCC code) |
| Trade promotion service fee | Duty-paying value (DPV) × 0.04% (exempt if under NT$100) |
| Commodity tax (if applicable) | (Duty-paying value + customs duty) × commodity tax rate |
| Business tax (VAT) | (Duty-paying value + customs duty + commodity tax + tobacco and alcohol tax) × 5% |
＊Legal basis for the formulas: Value-added and Non-value-added Business Tax Act Article 20; Customs Administration's explanation of taxes and fees payable on imported goods.
The 11-digit structure of a CCC tariff code
Lookup systems: the Customs Administration's AI tariff lookup hscode.customs.gov.tw, the Customs-Port-Trade Single Window GC411, and the Trade Administration's goods classification system. HowBridge has a built-in AI lookup of 12,000+ CCC tariff codes—just enter a product name to search for free. ⚠️ AI lookups are for reference only; the final classification is determined by the customs office handling your case.
What is a Customs-collected Business Tax Payment Certificate
When goods are imported, Customs collects business tax on behalf of the tax authority under Business Tax Act Article 41, and after payment issues the "Customs-collected Business Tax Payment Certificate" (commonly called the import declaration deduction copy). It serves two accounting functions:
① Input tax document
Use the deduction copy to claim input tax and offset it against the output tax for the period.
② Proof of purchase cost
Together with the import declaration, it serves as the source document for recording purchase costs.
Myth-busting: you can claim input business tax (VAT) with a simplified declaration too
Many people assume that "an express simplified declaration doesn't come with a formal document, so a company can't claim the credit"—this is a misconception. For imported express goods with a duty-paying value of NT$50,000 or less, a company or business can appoint a customs broker to file using a "simplified declaration form" (declaration types X2 / X3), without going through a formal import declaration; Customs still collects business tax as required by law and issues the "Customs-collected Business Tax Payment Certificate", which can be used to claim input business tax (VAT). Even within the X2 duty-free bracket, once the same consignee has used up its 6 duty-free times per half-year, tax is charged from the 7th time onward, and that business tax can likewise be credited—the key is that the declaration must record your company's unified business number (UBN) (X2 may omit the UBN, but you can't omit it if you want to claim the credit).
| Declaration type | Duty-paying value (per shipment) | Tax situation | Can input business tax (VAT) be claimed |
|---|---|---|---|
| X1 imported express document | Document | — | Documents are not goods; no tax |
| X2 low-value duty-free | NT$2,000 or less | Duty-free for the first 6 times per half-year; taxed from the 7th time onward | No input tax while duty-free; once taxed, ✅ can be claimed with the payment certificate |
| X3 low-value taxable | NT$2,001–50,000 | Business tax charged | ✅ Can be claimed (with the Customs-collected Business Tax Payment Certificate) |
| General import declaration | Over NT$50,000 (high value) | Business tax charged | ✅ Can be claimed |
✓ The 3 key conditions remain unchanged: ① the document must record the company's unified business number (UBN) (Business Tax Act Article 33); ② the goods must be used for your own business and ancillary operations (Article 19—if not for your own business, the credit is still disallowed); ③ the goods description / tariff code must still be declared truthfully (a simplified declaration is likewise subject to Customs Anti-Smuggling Act Article 37). A simplified declaration merely "simplifies the filing method"; the substantive requirements for claiming input tax are the same as for a formal declaration.
＊Legal basis: Air Express Consignments Clearance Regulations Article 11 (import express classification: X1 documents / X2 duty-free ≤2,000 / X3 taxable 2,001–50,000 / high value >50,000), Article 17 (appointment via simplified declaration form), and the operational rules for clearance of air express consignments by simplified declaration (X1 / X2 / X3 declaration types); 6 duty-free times per half-year (Customs Administration, with the entire shipment taxed from the 7th time onward); Value-added and Non-value-added Business Tax Act Articles 33 and 41 (Customs-collected business tax; input tax documents). High-value express goods with a duty-paying value over NT$50,000 must instead be handled under a general import declaration.
A company claiming input business tax (VAT): the 4 requirements (all indispensable)
Requirement 1｜Hold a valid document
You must hold the "deduction copy of the Customs-collected Business Tax Payment Certificate", recording the taxpayer's name, address, and unified business number (UBN) (Business Tax Act Article 33).
Requirement 2｜File according to the bank payment date period
File based on the period to which the actual bank payment date (tax payment date) belongs, neither earlier nor later; any amount underreported in the period may be made up within 10 years.
Requirement 3｜The goods must be used for your own business and ancillary operations
The most common pitfall: goods not used for your own business cannot be claimed (Business Tax Act Article 19, Paragraph 1, Subparagraph 2) → the imported goods must relate to your line of business, which is why the tariff code / goods description must be reported correctly.
Requirement 4｜Keep documents complete
Bind and keep the deduction copies by period, classified under "purchase expenses" or "fixed assets", ready for audit.
Where to look up your own import declaration
Through the Customs-Port-Trade Single Window (portal.sw.nat.gov.tw), log in with a business certificate (for companies and businesses) or a personal certificate to view: the clearance process (C1/C2/C3 status), the full declaration content, and tax and fee payment records, and to print the declaration.
Consequences of misreporting the tariff code / goods description (a two-pronged attack)
| Aspect | Consequence | Legal basis |
|---|---|---|
| National Taxation Bureau side | Goods description / tariff code doesn't match your line of business → input tax is entirely disallowed and the credit is denied | Business Tax Act Article 19 |
| Customs side (involving tax evasion) | False declaration of goods description or tariff code resulting in tax evasion → recovery of customs duty + a penalty of up to 5 times the evaded tax, with confiscation of the goods in serious cases | Customs Anti-Smuggling Act Article 37 |
| Improper classification (no intent to evade tax) | Customs reclassifies the tariff code and notifies you to pay the additional tax | Customs Administration handling principles |
✓ Voluntary correction can avoid penalties: if you voluntarily apply for correction and pay the additional tax before Customs or another authority begins an investigation, you may be exempt from penalty under Customs Anti-Smuggling Act Article 45-3. So the easiest approach is to use HowBridge to check and report the tariff code correctly before placing your order.
Frequently Asked Questions
Official Legal Sources
Business Tax Act Article 19, and Articles 15 / 33 / 41 (Value-added and Non-value-added Business Tax Act); Customs Anti-Smuggling Act Article 37; Customs Administration, Ministry of Finance (taxes and fees payable on imported goods, N5 declaration field-completion guide); Customs-Port-Trade Single Window, Customs Administration tariff lookup. The latest regulations of the competent authority shall prevail.
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