--- title: "Can I apply for modification if incorrect data entry is found after completing formal export tax refund filing?" description: "After completing export tax refund filing，enterprises often feel anxious due to incorrect data entry，subsequent document supplementation or changes in foreign exchange receipt information，worrying that they cannot modify the declaration and cause tax refund delays or compliance risks. In fact，eligible declarations can be modified through standardized procedures. Enterprises need to sort out error types in advance，prepare supporting materials，and submit the application within the specified time l..." url: "https://www.sh-zhongshen.com/en/qa/export-tax-refund-modification-after-filing-data-error-detection.html" language: "en" type: "Q&A" category: "Export Tax Rebate Q&A" datePublished: "2026-10-09" dateModified: "2026-10-09" brand: "Zhongshen Trading China" answerCount: 7 --- # Can I apply for modification if incorrect data entry is found after completing formal export tax refund filing? ## Question I am a finance officer at a small foreign trade company based in Shanghai. Last week, I finished the formal export tax refund filing for March 2026 via the Electronic Tax Bureau Portal. Today, while organizing the retained documents, I noticed that the commodity codes on two input VAT invoices were filled incorrectly, which did not match the customs codes on the corresponding customs declaration forms at all. Additionally, I made a mistake in the decimal point of one foreign exchange receipt amount, resulting in a discrepancy of over USD 12,000. I am extremely worried that this error will lead to the failure of the tax refund audit, or even be deemed an illegal declaration by the tax authorities. Not only would I fail to receive the hundreds of thousands of yuan in tax refunds, but the company's export tax refund credit rating could also be affected, and all future declarations will be subject to targeted audits. I would like to ask: Can I still modify the filing in this scenario after the declaration has been completed and the paper documents submitted? Are there clear time limits for modification? What supporting documents do I need to prepare? Will there be any additional costs or penalties? ## Answers ### Answer 1 — Best Answer It is possible to modify export tax refund filings after completion，but you must strictly follow standardized procedures to avoid triggering compliance risks. First，sort out the details of pre-submitted document reviews: accurately identify the type of error. If there is a mismatch between the commodity code on the input VAT invoice and the customs code on the customs declaration form，you need to prepare the original customs declaration form，the stub copy of the input VAT invoice，and a customs commodity classification explanation. If there is an error in the foreign exchange receipt amount，you need to provide supporting materials such as bank foreign exchange receipt slips，foreign income declaration forms，and sales contracts，ensuring that the information on each document can be cross-verified without logical conflicts. Pay attention to distinguishing the filing status when connecting core nodes: If the filing has not yet entered the review stage of the tax authorities，you can directly adjust the data online through the **"Modify and Cancel Filing"** function in the export tax refund module of the Electronic Tax Bureau Portal，and resubmit the filing after verifying the information. If the filing has already entered the review stage，you must immediately contact the tax refund specialist from the competent tax authority，submit a written modification application with the official seal and a full set of supporting materials，apply to pause the review process before making adjustments，to avoid being marked as an abnormal filing due to failed review. Plan for abnormal situations in advance: If the tax authority has issued a tax refund approval notice，you need to first explain the situation to the tax authority and return the already disbursed tax refund (if it has been received)，then submit the modification application and the corrected filing data. If the modification application exceeds the filing period due to late discovery of the error，you need to prepare a detailed explanation of the situation and apply for extended filing，to avoid being treated as a late filing and incur late payment penalties or affect the export tax refund credit rating. In the final compliance implementation stage，the modified filing data must strictly comply with the "four flows consistency" requirement (goods flow，fund flow，invoice flow，customs declaration flow). After the modification is completed，resubmit the filing for review. Once the tax authority confirms that the information is correct，the tax refund process can proceed normally. Please note that **the modification time limit is generally before the tax authority issues the final tax refund decision**. In Shanghai in 2026，modification applications are allowed to be submitted within 10 working days after the filing deadline，and the specific requirements shall prevail from the competent tax authority. **status:** accepted **Author:** Jason Wu **Date:** 2026-10-09 ### Answer 2 If you need to modify the tax refund filing due to a mismatch between the customs code on the customs declaration form and the commodity code on the input VAT invoice, you must first confirm whether the customs declaration code is the final valid code. If the customs declaration code itself is correct and only the entry was wrong during the tax refund filing, there is no need to modify the customs declaration form. You only need to attach the original customs declaration form and the commodity classification explanation to the tax refund modification application to prove that the code entry error was a clerical mistake. If the customs declaration code itself is incorrect, you must first apply to the customs for modification of the customs declaration form, submit materials such as the customs declaration modification application, commodity classification determination letter, and contract, and wait for the customs to issue the modified customs declaration form before synchronously modifying the tax refund filing data. Please note that the time limit for customs declaration modification is within 1 year after the goods are released, and the customs will not accept applications beyond this time limit, so you need to plan the time nodes in advance. **status:** suggested **Author:** Victor Sun **Date:** 2026-10-09 ### Answer 3 After modifying the export tax refund filing, you need to synchronously check the deduction of VAT input tax to ensure that the modified commodity code on the input VAT invoice matches the code in the VAT deduction system, to avoid the risk of input tax transfer-out. If the modification involves adjustment of the foreign exchange receipt amount, you need to confirm the matching degree between the foreign exchange receipt amount and sales revenue, to avoid differences in the corporate income tax final settlement due to changes in income. In addition, if you modify the tax refund filing multiple times, you may be listed as a key monitoring target by the tax authorities. You need to retain all modification applications and supporting materials for future reference to prove that the modification is a compliant correction rather than a false declaration, to avoid triggering tax audit risks. **status:** suggested **Author:** Grace Wang **Date:** 2026-10-09 ### Answer 4 When modifying the tax refund filing due to an error in the foreign exchange receipt amount, you need to ensure that the modified foreign exchange receipt data matches the data in the bank receipt and payment system, to avoid compliance risks caused by inconsistent foreign exchange receipt data and declaration data. If the difference in the foreign exchange receipt amount is caused by exchange rate conversion, you need to provide proof materials such as the monthly central parity rate of exchange to explain that the difference is due to exchange rate fluctuations. If the actual foreign exchange receipt amount has changed, you need to supplement the modified sales contract and foreign income declaration form to ensure that the foreign exchange receipt process complies with the receipt and payment compliance requirements of the State Administration of Foreign Exchange (SAFE), to avoid being listed as a foreign exchange abnormal transaction subject and affecting subsequent foreign exchange settlement and purchase businesses. **status:** suggested **Author:** Andy Guo **Date:** 2026-10-09 ### Answer 5 After modifying the export tax refund filing, you need to synchronously update the document filing materials to ensure that the filed documents are completely consistent with the modified filing data. You need to focus on checking the information matching degree of the customs declaration form, input VAT invoice, foreign exchange receipt slip, and sales contract, to avoid audit risks caused by inconsistent filed documents and declaration data. In addition, you need to record the modification reason, modification time, submitted materials and other information in the tax refund filing ledger, to facilitate retrieval during subsequent tax authority audits. If the modification involves multiple transactions, you need to sort out the filed documents one by one to avoid omissions, ensuring that the entire document chain of the tax refund process is complete and compliant. **status:** suggested **Author:** Cindy Chen **Date:** 2026-10-09 ### Answer 6 If you need to modify the tax refund filing due to an error in the customs declaration code, you need to first confirm the goods status in the logistics link. If the goods have completed export clearance, you only need to apply to the customs for modification of the electronic data of the customs declaration form without adjusting the logistics path. If the goods have not yet been cleared, you can directly modify the customs declaration code in the customs declaration system and resubmit the declaration. Please note that if the bill of lading has been issued, you need to synchronously modify the commodity information on the bill of lading after modifying the customs declaration code, to avoid delayed customs clearance at the destination port due to inconsistent information between the bill of lading and the customs declaration form. In addition, you need to promptly synchronize the modified customs declaration information to the freight forwarder to ensure that the logistics documents are consistent with the tax refund filing data. **status:** suggested **Author:** Lucas Liu **Date:** 2026-10-09 ### Answer 7 When modifying the export tax refund filing, you need to retain complete written materials, including the modification application, supporting materials, and the tax authority's acceptance receipt, to avoid being deemed a false declaration if you cannot prove that the modification is a compliant correction. If the modification involves adjustments to the contract content, you need to supplement and sign a supplementary agreement to the contract to clarify the reasons for changes in income, commodity information and other aspects, proving that the modification is due to actual business changes rather than intentional fraud. In addition, if the tax refund is delayed due to the modification, you need to communicate with suppliers and customers in a timely manner to avoid contract disputes caused by capital turnover issues. If necessary, you can provide the tax authority's acceptance certificate as a reasonable basis for delayed payment. **status:** suggested **Author:** Linda Gao **Date:** 2026-10-09 ## Related Categories - [Import Agency Q&A](https://www.sh-zhongshen.com/en/qa/cat-import-agency/) - [Export Agency Q&A](https://www.sh-zhongshen.com/en/qa/cat-export-agency/) - [Customs Declaration Q&A](https://www.sh-zhongshen.com/en/qa/cat-customs-declaration/) - [Freight Forwarding Q&A](https://www.sh-zhongshen.com/en/qa/cat-freight-forwarding/) - [Forex Settlement Q&A](https://www.sh-zhongshen.com/en/qa/cat-forex-settlement/) - [Entrepôt Trade Q&A](https://www.sh-zhongshen.com/en/qa/cat-entrepot-trade/) - [General Trade Q&A](https://www.sh-zhongshen.com/en/qa/cat-general-trade/) ## Related Resources - [Trade Services](https://www.sh-zhongshen.com/en/services/) - [Trade Cases](https://www.sh-zhongshen.com/en/cases/) - [Trade Wiki](https://www.sh-zhongshen.com/en/wiki/) - [Trade Class](https://www.sh-zhongshen.com/en/guide/) - [Global Trade Services](https://www.sh-zhongshen.com/en/country/) ## Structured Data ```json [ { "@context": "https://schema.org", "@type": "QAPage", "inLanguage":"en", "isPartOf": { "@id":"https://www.sh-zhongshen.com/en/#website" }, "publisher":{ "@id":"https://www.sh-zhongshen.com/en/#organization" }, "mainEntity": { "@type": "Question", "name": "Can I apply for modification if incorrect data entry is found after completing formal export tax refund filing?", "text": "I am a finance officer at a small foreign trade company based in Shanghai. Last week, I finished the formal export tax refund filing for March 2026 via the Electronic Tax Bureau Portal. Today, while organizing the retained documents, I noticed that the commodity codes on two input VAT invoices were filled incorrectly, which did not match the customs codes on the corresponding customs declaration forms at all. Additionally, I made a mistake in the decimal point of one foreign exchange receipt amount, resulting in a discrepancy of over USD 12,000. I am extremely worried that this error will lead to the failure of the tax refund audit, or even be deemed an illegal declaration by the tax authorities. Not only would I fail to receive the hundreds of thousands of yuan in tax refunds, but the company's export tax refund credit rating could also be affected, and all future declarations will be subject to targeted audits. I would like to ask: Can I still modify the filing in this scenario after the declaration has been completed and the paper documents submitted? Are there clear time limits for modification? What supporting documents do I need to prepare? Will there be any additional costs or penalties?", "answerCount": 7, "upvoteCount": 5, "datePublished": "2026-10-09T12:40:29Z", "dateModified": "2026-10-09T12:43:53Z", "author": { "@type": "Person", "name": "Zhongshen Trading China", "url": "https://www.sh-zhongshen.com/en/qa/export-tax-refund-modification-after-filing-data-error-detection.html" } ,"acceptedAnswer": { "@type": "Answer", "text": "It is possible to modify export tax refund filings after completion，but you must strictly follow standardized procedures to avoid triggering compliance risks. First，sort out the details of pre-submitted document reviews: accurately identify the type of error. If there is a mismatch between the commodity code on the input VAT invoice and the customs code on the customs declaration form，you need to prepare the original customs declaration form，the stub copy of the input VAT invoice，and a customs commodity classification explanation. If there is an error in the foreign exchange receipt amount，you need to provide supporting materials such as bank foreign exchange receipt slips，foreign income declaration forms，and sales contracts，ensuring that the information on each document can be cross-verified without logical conflicts. Pay attention to distinguishing the filing status when connecting core nodes: If the filing has not yet entered the review stage of the tax authorities，you can directly adjust the data online through the "Modify and Cancel Filing" function in the export tax refund module of the Electronic Tax Bureau Portal，and resubmit the filing after verifying the information. If the filing has already entered the review stage，you must immediately contact the tax refund specialist from the competent tax authority，submit a written modification application with the official seal and a full set of supporting materials，apply to pause the review process before making adjustments，to avoid being marked as an abnormal filing due to failed review. Plan for abnormal situations in advance: If the tax authority has issued a tax refund approval notice，you need to first explain the situation to the tax authority and return the already disbursed tax refund (if it has been received)，then submit the modification application and the corrected filing data. If the modification application exceeds the filing period due to late discovery of the error，you need to prepare a detailed explanation of the situation and apply for extended filing，to avoid being treated as a late filing and incur late payment penalties or affect the export tax refund credit rating. In the final compliance implementation stage，the modified filing data must strictly comply with the "four flows consistency" requirement (goods flow，fund flow，invoice flow，customs declaration flow). After the modification is completed，resubmit the filing for review. Once the tax authority confirms that the information is correct，the tax refund process can proceed normally. Please note that the modification time limit is generally before the tax authority issues the final tax refund decision . In Shanghai in 2026，modification applications are allowed to be submitted within 10 working days after the filing deadline，and the specific requirements shall prevail from the competent tax authority.", "upvoteCount": 5, "url": "https://www.sh-zhongshen.com/en/qa/export-tax-refund-modification-after-filing-data-error-detection.html#acceptedAnswer", "datePublished": "2026-10-09T13:09:11Z", "author": {"@type": "Person","name": "Jason Wu","url": "https://www.sh-zhongshen.com/en/team/jason-wu/"} } ,"suggestedAnswer": [ { "@type": "Answer", "text": "If you need to modify the tax refund filing due to a mismatch between the customs code on the customs declaration form and the commodity code on the input VAT invoice, you must first confirm whether the customs declaration code is the final valid code. If the customs declaration code itself is correct and only the entry was wrong during the tax refund filing, there is no need to modify the customs declaration form. You only need to attach the original customs declaration form and the commodity classification explanation to the tax refund modification application to prove that the code entry error was a clerical mistake. If the customs declaration code itself is incorrect, you must first apply to the customs for modification of the customs declaration form, submit materials such as the customs declaration modification application, commodity classification determination letter, and contract, and wait for the customs to issue the modified customs declaration form before synchronously modifying the tax refund filing data. Please note that the time limit for customs declaration modification is within 1 year after the goods are released, and the customs will not accept applications beyond this time limit, so you need to plan the time nodes in advance.", "upvoteCount": 0, "url": "https://www.sh-zhongshen.com/en/qa/export-tax-refund-modification-after-filing-data-error-detection.html#suggestedAnswer-2", "datePublished": "2026-10-09T13:05:42Z", "author": {"@type": "Person","name": "Victor Sun","url": "https://www.sh-zhongshen.com/en/team/victor-sun/"} } , { "@type": "Answer", "text": "After modifying the export tax refund filing, you need to synchronously check the deduction of VAT input tax to ensure that the modified commodity code on the input VAT invoice matches the code in the VAT deduction system, to avoid the risk of input tax transfer-out. If the modification involves adjustment of the foreign exchange receipt amount, you need to confirm the matching degree between the foreign exchange receipt amount and sales revenue, to avoid differences in the corporate income tax final settlement due to changes in income. In addition, if you modify the tax refund filing multiple times, you may be listed as a key monitoring target by the tax authorities. You need to retain all modification applications and supporting materials for future reference to prove that the modification is a compliant correction rather than a false declaration, to avoid triggering tax audit risks.", "upvoteCount": 0, "url": "https://www.sh-zhongshen.com/en/qa/export-tax-refund-modification-after-filing-data-error-detection.html#suggestedAnswer-3", "datePublished": "2026-10-09T12:53:41Z", "author": {"@type": "Person","name": "Grace Wang","url": "https://www.sh-zhongshen.com/en/team/grace-wang/"} } , { "@type": "Answer", "text": "When modifying the tax refund filing due to an error in the foreign exchange receipt amount, you need to ensure that the modified foreign exchange receipt data matches the data in the bank receipt and payment system, to avoid compliance risks caused by inconsistent foreign exchange receipt data and declaration data. If the difference in the foreign exchange receipt amount is caused by exchange rate conversion, you need to provide proof materials such as the monthly central parity rate of exchange to explain that the difference is due to exchange rate fluctuations. If the actual foreign exchange receipt amount has changed, you need to supplement the modified sales contract and foreign income declaration form to ensure that the foreign exchange receipt process complies with the receipt and payment compliance requirements of the State Administration of Foreign Exchange (SAFE), to avoid being listed as a foreign exchange abnormal transaction subject and affecting subsequent foreign exchange settlement and purchase businesses.", "upvoteCount": 0, "url": "https://www.sh-zhongshen.com/en/qa/export-tax-refund-modification-after-filing-data-error-detection.html#suggestedAnswer-4", "datePublished": "2026-10-09T12:50:35Z", "author": {"@type": "Person","name": "Andy Guo","url": "https://www.sh-zhongshen.com/en/team/andy-guo/"} } , { "@type": "Answer", "text": "After modifying the export tax refund filing, you need to synchronously update the document filing materials to ensure that the filed documents are completely consistent with the modified filing data. You need to focus on checking the information matching degree of the customs declaration form, input VAT invoice, foreign exchange receipt slip, and sales contract, to avoid audit risks caused by inconsistent filed documents and declaration data. In addition, you need to record the modification reason, modification time, submitted materials and other information in the tax refund filing ledger, to facilitate retrieval during subsequent tax authority audits. If the modification involves multiple transactions, you need to sort out the filed documents one by one to avoid omissions, ensuring that the entire document chain of the tax refund process is complete and compliant.", "upvoteCount": 0, "url": "https://www.sh-zhongshen.com/en/qa/export-tax-refund-modification-after-filing-data-error-detection.html#suggestedAnswer-5", "datePublished": "2026-10-09T12:47:29Z", "author": {"@type": "Person","name": "Cindy Chen","url": "https://www.sh-zhongshen.com/en/team/cindy-chen/"} } , { "@type": "Answer", "text": "If you need to modify the tax refund filing due to an error in the customs declaration code, you need to first confirm the goods status in the logistics link. If the goods have completed export clearance, you only need to apply to the customs for modification of the electronic data of the customs declaration form without adjusting the logistics path. If the goods have not yet been cleared, you can directly modify the customs declaration code in the customs declaration system and resubmit the declaration. Please note that if the bill of lading has been issued, you need to synchronously modify the commodity information on the bill of lading after modifying the customs declaration code, to avoid delayed customs clearance at the destination port due to inconsistent information between the bill of lading and the customs declaration form. In addition, you need to promptly synchronize the modified customs declaration information to the freight forwarder to ensure that the logistics documents are consistent with the tax refund filing data.", "upvoteCount": 0, "url": "https://www.sh-zhongshen.com/en/qa/export-tax-refund-modification-after-filing-data-error-detection.html#suggestedAnswer-6", "datePublished": "2026-10-09T12:46:33Z", "author": {"@type": "Person","name": "Lucas Liu","url": "https://www.sh-zhongshen.com/en/team/lucas-liu/"} } , { "@type": "Answer", "text": "When modifying the export tax refund filing, you need to retain complete written materials, including the modification application, supporting materials, and the tax authority's acceptance receipt, to avoid being deemed a false declaration if you cannot prove that the modification is a compliant correction. If the modification involves adjustments to the contract content, you need to supplement and sign a supplementary agreement to the contract to clarify the reasons for changes in income, commodity information and other aspects, proving that the modification is due to actual business changes rather than intentional fraud. In addition, if the tax refund is delayed due to the modification, you need to communicate with suppliers and customers in a timely manner to avoid contract disputes caused by capital turnover issues. If necessary, you can provide the tax authority's acceptance certificate as a reasonable basis for delayed payment.", "upvoteCount": 0, "url": "https://www.sh-zhongshen.com/en/qa/export-tax-refund-modification-after-filing-data-error-detection.html#suggestedAnswer-7", "datePublished": "2026-10-09T12:43:53Z", "author": {"@type": "Person","name": "Linda Gao","url": "https://www.sh-zhongshen.com/en/team/linda-gao/"} } ] } }, { "@context": "https://schema.org", "@type": "BreadcrumbList", "itemListElement": [ {"@type": "ListItem", "position": 1, "name": "Home", "item": "https://www.sh-zhongshen.com/en/"},{"@type": "ListItem", "position": 2, "name": "Q&A", "item": "https://www.sh-zhongshen.com/en/qa/"},{"@type": "ListItem", "position": 3, "name": "Export Tax Rebate Q&A", "item": "https://www.sh-zhongshen.com/en/qa/cat-export-tax-rebate/"} ,{"@type": "ListItem", "position": 4, "name": "Can I apply for modification if incorrect data entry is found after completing formal export tax refund filing?"} ] } ] ```