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Can Compliant Supplementary Declaration Be Conducted for Missed Customs Declaration After Import Goods Arrive at Port?
or complex compliance issues.
clearance and fund security.
I am the import manager of a cross-border e-commerce company based in Shanghai. Last week, I found a problem with a batch of mother and baby products prepared for the 618 Grand Promotion shipped from Germany -- the previously cooperating freight forwarder claimed that customs clearance had been completed, but the port suddenly notified that the goods had been detained for 10 days due to lack of declaration. After checking, we confirmed that the freight forwarder omitted the customs declaration procedures. Now the demurrage is increasing every day.
If this batch of goods cannot be put on shelf for the promotion, the pre-sale compensation and overstock loss alone will reach hundreds of thousands of RMB. I am extremely anxious. I would like to ask, can supplementary declaration be done for such missed declaration? Will it incur high fines? Will it affect our company's customs credit rating, leading to targeted inspection for all future imports? Is the supplementary declaration process complicated, can we pick up the goods as soon as possible?
Eric ZhouYears of service：6Customer Rating：5.0
Senior Manager of Foreign Exchange & Tax RebatesStart a Chat
Many import enterprises hold a misconception that quiet supplementary declaration can settle the problem after missing customs declaration. In fact，supplementary declaration without actively explaining the cause of missed declaration to customs is very likely to trigger customs risk warning，leading to chain reactions including customs detention，high fines and even enterprise credit rating downgrade. If supplementary declaration is not done in time，goods detained over 14 days may be transferred to the customs anti-smuggling department，demurrage will double on a daily basis，and the customs clearance priority of the enterprise's subsequent import goods will be affected.
The core of risk isolation is Active Declaration + Pre-approval of Documents: Sort out the full set of import documents (bill of lading，invoice，packing list，certificate of origin，etc.) as soon as possible，after confirming there is no omission or error in documents，submit an active explanation of missed declaration to the local customs，clarify the cause of missed declaration (such as freight forwarder negligence，internal process loophole，etc.)，to avoid being identified as intentional misdeclaration.
Exclusive loss stop tip: Enterprises can entrust professional foreign trade agency to assist in applying for demurrage reduction. Some ports offer 30%-50% demurrage reduction for enterprises that admit mistake actively and have no bad records. Meanwhile，priority can be given to "customs clearance integration" mode during supplementary declaration to shorten the review period. It takes as fast as 3 working days to complete supplementary declaration and pick up goods. In addition，after completing supplementary declaration，enterprises should sort out internal processes in time and establish a double-check mechanism for customs declaration to avoid repeated omission.
Andy GuoYears of service：3Customer Rating：5.0
Supply Chain Management ExpertStart a Chat
Supplementary declaration must be implemented in strict accordance with the latest *Administrative Measures for Import Goods Declaration* issued by the General Administration of Customs of China 2026. First, you need to submit the *Statement of Active Voluntary Missed Declaration*, together with original and electronic scanned copies of the full set of import documents. Customs will first review the authenticity and integrity of documents.
If no intentional misdeclaration is confirmed, it will enter the normal declaration process. It should be noted that the valuation for supplementary declaration is based on the customs benchmark price on the date of goods arrival. If the deviation between the declared price and the benchmark price exceeds 10%, supplementary supporting materials (such as foreign payment voucher, trade contract) are required. In addition, for enterprises that conduct active supplementary declaration for the first time and have no bad credit record, credit rating downgrade will not be triggered, but internal process rectification must be completed and rectification report must be submitted within 30 days.
Kevin LinYears of service：4Customer Rating：5.0
Trade Solutions ManagerStart a Chat
Priority should be given to addressing title of goods and demurrage cost issues during supplementary declaration: First, you can apply to the shipping line for extending the free storage period, and submit the supplementary declaration acceptance notice issued by customs. Most shipping lines can grant 7-10 days extension of free storage period.
If the goods have been detained at the port for a long time, you can apply to transfer the goods to the nearby bonded logistics center for storage to avoid continuous accumulation of demurrage. It should be noted that you must confirm the title of goods of the bill of lading before transferring.
If it is a telex release bill of lading, you need to reissue the title transfer confirmation letter to the shipping line to avoid title dispute. In addition, when picking up goods after completing supplementary declaration, you need to book the container pickup time with the port yard in advance, to avoid pickup delay caused by yard congestion, which will further increase logistics cost.
Jason WuYears of service：10Customer Rating：5.0
International Logistics & Supply Chain ManagerStart a Chat
Tax补缴 for supplementary declaration must be implemented in strict accordance with customs regulations: The tax calculation base is the customs approved dutiable price on the date of goods arrival, and the applicable tax rate is the effective tax rate on the date of goods arrival, not the tax rate on the date of supplementary declaration. If the enterprise meets the requirements for VAT deferral, you can apply for VAT deferral during supplementary declaration, no need to pay import VAT in one lump sum, which eases capital pressure. It should be noted that the late fee for supplementary declaration is calculated starting from the 15th day after goods arrival, charged at 0.05% per diem.
If the enterprise can provide reasonable proof for the cause of missed declaration (such as the liability confirmation letter from the freight forwarder), you can apply to customs for late fee reduction. In addition, the paid import VAT can be normally credited against enterprise output tax. You need to submit the duty payment certificate to the tax authority for deduction filing within 10 days after completing supplementary declaration.
Grace WangYears of service：10Customer Rating：5.0
Senior Foreign Trade ConsultantStart a Chat
After completing supplementary declaration, you need to complete the compliance adjustment of payment and collection synchronously: If the enterprise has completed the outward payment, you need to add the declaration number obtained from supplementary declaration to the "Goods Trade Foreign Exchange Monitoring System" of the State Administration of Foreign Exchange (SAFE), update the declaration association information of the payment transaction, to avoid being listed as an abnormal monitoring target by SAFE. If you use Cross-Border Interbank Payment System (CIPS) for RMB cross-border payment, you need to submit the post-supplementary-declaration declaration to the bank, adjust the original transaction remark to "payment under supplementary import customs declaration", to ensure that transaction background matches documents.
In addition, if the enterprise uses an offshore account for payment, you need to submit supplementary declaration documents to the offshore account opening bank synchronously, to avoid account freezing due to unclear transaction background. It should be noted that all adjustments must be completed within 15 days after completing supplementary declaration, otherwise the enterprise's subsequent payment and collection authority will be affected.
Michael ZhangYears of service：6Customer Rating：5.0
Customs Declaration & Compliance ExpertStart a Chat
If the missed declaration is caused by a third-party freight forwarder, the enterprise needs to keep the full set of communication records (such as WeChat, email, contract) as legal evidence for subsequent liability claim. You can require the freight forwarder to bear losses including demurrage and fines in accordance with the *International Freight Forwarding Contract*.
It should noted that if customs identifies that the enterprise has committed intentional misdeclaration, a fine equivalent to 5%-30% of the goods value will be imposed in accordance with the *Customs Administrative Penalty Enforcement Regulations*, and criminal liability may be pursued in serious cases. In addition, if the goods involved in supplementary declaration involve intellectual property rights (such as brand authorization for mother and baby products), you need to submit the intellectual property customs protection filing certificate synchronously, to avoid infringement dispute caused by unreported intellectual property right, which leads to goods detention or confiscation.
Evelyn LiYears of service：3Customer Rating：5.0
Cross-border Compliance SupervisorStart a Chat
On-site inspection is very likely to be triggered by customs during supplementary declaration, so you need to prepare for inspection in advance: First, sort out the detailed packing list of the goods, mark the quantity, specification and brand of each SKU to ensure consistency with the declaration documents. If the package is damaged due to storage during the detention period, you need to take photos in advance and explain the situation to customs, to avoid being identified as goods shortage or damage.
You can apply to customs for priority inspection for mother and baby products during machine inspection to shorten the inspection cycle. It should be noted that if the inspection notice marks "key inspection", you need to provide additional supplementary materials such as certificate of origin and brand authorization to cooperate with customs inspection. After inspection, you need to sign and confirm the inspection report issued by customs to ensure the recorded content is consistent with the actual goods.
Victor SunYears of service：5Customer Rating：5.0
Trade Risk Control ManagerStart a Chat
If the goods under supplementary declaration are mother and baby products, you need to focus on checking package compliance: If the moisture-proof package is damaged due to storage during detention, you need to re-do moisture-proof reinforcement, and provide the goods quality test report issued by a third-party testing institution to prove that the goods are not damp or deteriorated and meet import quality requirements.
If the goods include dangerous goods (such as alcohol-containing infant hand sanitizer), you need to re-submit the UN dangerous goods packaging certificate during supplementary declaration to confirm that the package is not damaged during the detention period, to avoid customs detention caused by non-compliant packaging. In addition, you need to prepare the Chinese translation of the MSDS report in advance to cooperate with customs in packaging compliance review, to ensure that the goods meet import packaging standards.
Cindy ChenYears of service：3Customer Rating：5.0
Key Account ManagerStart a Chat
If the enterprise operates both import and export business, after completing supplementary declaration, you need to update the export tax rebate document filing system synchronously: Include the import declaration, duty payment certificate and other documents obtained from supplementary declaration into the export tax rebate related document filing library, to ensure the complete document chain of import and export business. It should be noted that if the enterprise's export tax rebate business involves related transactions with imported goods, you need to note the supplementary import declaration when declaring export tax rebate, to avoid being listed as a correspondence investigation target by the tax authority due to incomplete document chain.
In addition, the late fee generated by supplementary declaration cannot be included in the cost deduction scope of export tax rebate, it needs to be accounted separately to avoid affecting the tax calculation base of export tax rebate. The document filing update must be completed within 10 days after completing supplementary declaration to ensure the compliance of export tax rebate declaration.
Daniel XuYears of service：10Customer Rating：5.0
Director of Import & Export OperationsStart a Chat
To avoid repeated missed customs declaration in the future, enterprises need to optimize supply chain planning: Establish a "double-check" customs declaration review mechanism, the internal document post and the freight forwarder review the customs declaration data separately to ensure no omission or error. Advance the preparation node of customs declaration data to 7 days before goods loading, and link with the enterprise's inventory management system to ensure that the customs declaration data has been reviewed and submitted to customs before goods arrival.
In addition, when signing the international freight contract, clearly define the customs declaration liability of the freight forwarder, and include the loss caused by missed declaration into the compensation scope of the freight forwarder. At the same time, include the risk cost of supplementary declaration (such as demurrage, fine) into the supply chain cost actuarial model, reserve 1%-2% risk reserve to improve the anti-risk ability of the supply chain.