2026 Core Declaration Documents and Compliance Points for Export Tax Refund Handling

Core Classification and Practical Requirements for Export Tax Refund Documents in 2026

Most foreign trade enterprises encounter obstacles in the tax refund process,mainly due to incomplete or non-compliant document preparation.In 2026,the electronic document linkage mechanism between customs and tax authorities is fully implemented,with the proportion of manual review reduced to 12%,while review standards for document consistency and HS code classification have become stricter.The following is a complete breakdown of documents required for export tax refund:

I.Required Basic Declaration Documents

• Electronic data of export goods declaration form (paper version is no longer required from 2026,only electronically signed copies need to be retained,which can be downloaded via the International Trade Single Window)
• Export invoice (must comply with the format requirements of the State Taxation Administration,marked with FOB price,declaration form number,commodity code,and fully match the information on the declaration form)
• Deduction copy of input VAT special invoice (commodity name,quantity,specification must correspond one-to-one with the declaration form,no vague expressions allowed)
• Bank foreign exchange receipt voucher (retain the full year’s foreign exchange receipt details.The mandatory requirement of corresponding individual foreign exchange settlement to tax refund is piloted for cancellation in 2026,but the foreign exchange receipt amount must be consistent with the declaration form)
• Summary export tax refund declaration form and detailed declaration form (electronically signed copies exported after filling via the electronic declaration terminal)

In 2026,some ports pilot the "one-to-one document matching method" to simplify declaration,that is,one input invoice corresponds to one export declaration form,which can shorten the review time limit,but enterprises need to file with the competent tax authority in advance.

II.Special Document Materials (Distinguished by Trade Type)

In 2025,a mechanical and electrical export enterprise where Ms.Zhong works exported a batch of equipment to Japan.The tax refund review was delayed by 18 days due to the failure to provide the electronically signed Form R,resulting in a capital occupation cost loss of nearly 20,000 CNY.In 2026,the enterprise completed the electronic signature of the certificate of origin via the Single Window in advance,and the tax refund disbursement time limit was shortened to 7 days.

III.Supplementary Documents for Special Scenarios

• Deemed export goods: Supporting documents such as foreign contracted engineering contracts,overseas investment certificates and other relevant supporting documents are required
• Entrusted agency export: Agency export agreement and agency export goods certificate issued by the trustee are required
• Returned goods: Certificate of paid tax (or no tax refund) for returned export goods and returned goods declaration form are required
• Goods subject to anti-dumping duty: Anti-dumping duty payment certificate of the destination country and relevant supporting documents are required

IV.Common Compliance Risks and Avoidance Tips

In 2026,the data linkage rate between tax authorities and customs reaches 98%.The following are the most easily triggered compliance red lines:

• Wrong HS code classification: The customs updated HS codes for 1,276 commodities in 2026.Wrong classification will lead to inconsistent tax refund rates,and even be identified as tax fraud
• Inconsistent documents: Mismatch of commodity name and quantity between the input invoice and the declaration form will lead to declaration rejection,and resubmission after modification is required
• Non-standard foreign exchange receipt: Failure to retain complete foreign exchange receipt details will lead to requirements for providing proof documents of overseas payers,delaying the tax refund progress
• Overdue declaration: The export tax refund declaration deadline in 2026 is 430 days from the date of goods export declaration.Failure to declare after the deadline will be deemed as domestic sales for taxation

Zhongshitong’s practical operation team will review the documents submitted by enterprises 7 days in advance,check HS codes and document consistency,and predict customs control risks.In 2024,in a chemical export business we handled,we found the wrong HS code classification in advance.After adjustment,the enterprise obtained an additional 4.2% tax refund,avoiding a loss of 18,000 CNY.

V.Latest Policy Adjustments for Export Tax Refund in 2026

From January 2026,the "form-free" export tax refund service is implemented nationwide.When enterprises declare via the Single Window,the system automatically retrieves data such as declaration forms and input invoices,reducing manual filling errors.For eligible small and micro enterprises,the tax refund review time limit is shortened to 2 working days,further improving capital turnover efficiency.

Note that from 2026,tax authorities will conduct key reviews on enterprises with tax refunds exceeding 1 million CNY,requiring more business supporting documents such as purchase and sales contracts and logistics vouchers,so enterprises need to prepare in advance.

Preparation of export tax refund documents seems cumbersome,but mastering the core points and combining the latest policy requirements can help complete the declaration smoothly.Relying on the resource advantages of Shanghai Port,Zhongshitong can provide professional agency services for foreign trade enterprises across the country,help avoid compliance risks and accelerate capital recovery.