Corporate income tax refunds offer businesses an opportunity to optimize cash flow and improve financial management efficiency. Circular 80/2021/TT-BTCBusinesses are only eligible for tax refunds if they meet the following conditions:
- Corporate income tax has been declared and paid in accordance with regulations.
- Any excess tax paid will not be used for deduction in the following period.
- The accounting documents and records are complete and valid.
- There have been no serious tax law violations in the last 3 years.
Understanding these conditions will help businesses shorten the tax refund process and avoid legal risks.
What is corporate income tax refund?
Corporate income tax refund is the process by which the tax authorities return the amount of tax that a business has overpaid, exceeding the amount legally required. In other words, if a business has provisionally paid or declared corporate income tax at a higher rate than the actual amount due, the difference will be refunded after the tax authorities verify and confirm the validity of the documentation.
Corporate income tax refunds not only help businesses optimize cash flow and reduce financial pressure, but also increase transparency in accounting management and legal compliance. This is a legitimate right of businesses, clearly stipulated in documents such as Circular 80/2021/TT-BTC and guidelines from the General Department of Taxation..
Common cases where businesses are eligible for corporate income tax refunds:
- Overpaying the provisional corporate income tax compared to the amount due.
- Unfulfilled corporate income tax deductions from previous periods.
- Tax incentives or refunds are subject to tax policies applicable to specific industries or projects.
By correctly understanding the definition and mechanism of tax refunds, businesses can create smart financial plans, prepare accurate documentation, and shorten the time it takes to receive tax refunds.
When is corporate income tax refund available?

According to the Corporate Income Tax Law and its accompanying guiding documents (Decrees, Circulars), businesses are entitled to a corporate income tax refund in the following cases:
- Overpaying taxes: This occurs when a business pays more corporate income tax than it actually owes after the tax period is finalized.
- Offsetting losses from previous periods: If a business has losses incurred in previous years, these losses can be carried forward to subsequent periods to be deducted from taxable income. When taxable income is lower than the amount of tax already paid provisionally, an overpayment of tax will occur, and the business has the right to request a corporate income tax refund.
- Enjoy tax incentives as prescribed by law: If a business is eligible for corporate income tax exemption or reduction but has already made provisional tax payments, the tax authorities will refund the corresponding amount of tax according to the applicable incentive level.
- Decision from the authorities: In certain special cases, tax refunds may be approved by the tax authorities or other competent agencies.
Conditions for receiving corporate income tax refund

For a business to be eligible for corporate income tax refund, it must meet the following requirements, which are explained in detail:
The company has paid corporate income tax as required.
Businesses must declare and pay corporate income tax in full and on time as prescribed by law. This includes accurately calculating taxable profits, applying the correct tax rate, and paying in due tax periods. Only when taxes have been legally paid can businesses request a refund of any overpaid taxes from the tax authorities.
Any overpaid tax cannot be deducted from the next period.
Corporate income tax refunds only apply to the portion of tax paid that exceeds the amount due and cannot be used for deductions in subsequent tax periods. This means businesses must clearly identify the excess tax amount, avoiding confusion with deductions that can be carried forward to the next period.
The accounting documents and records are complete and valid.
All accounting documents, invoices, receipts, financial reports, etc., must be fully and legally documented and comply with accounting standards. Transparent records make it easier for tax authorities to check, verify, and decide on tax refunds. Missing or incorrect documents will delay or reject tax refund requests.
No serious tax law violations in the last 3 years.
Businesses must comply with tax regulations and not have been penalized for serious violations within the past three years. Serious violations may include tax fraud, intentional misreporting of data, or failure to pay taxes resulting in heavy penalties. This ensures that tax refunds are granted to transparent and trustworthy businesses.
Corporate income tax refund application

To ensure a smooth corporate income tax refund process, businesses need to prepare a complete tax refund application as stipulated in Clause 2, Article 42 of Circular 80/2021/TT-BTC, including the following documents:
- Corporate income tax return: This document accurately reflects the amount of tax the business has paid and the actual amount of tax payable.
- Request for processing overpaid taxes (Form 01/DNXLNT): Clearly state the business information, the amount of overpaid tax, the tax period, the reason, and a commitment to accuracy.
- Payment documents: These include invoices, receipts, and bank statements proving that the business has paid taxes or related payments.
- Related reports and accounting records: If requested by the tax authorities, businesses must submit financial statements or accounting records to prove any overpayment of taxes.
Preparing complete and transparent documentation increases the likelihood of businesses receiving prompt tax refund approval from the tax authorities and helps avoid errors.
Procedure for processing corporate income tax refund applications
After submitting the application, the tax authorities will follow a process consisting of the following steps:
Step 1: Prepare the documents
The application must be complete, valid, and in accordance with the prescribed format. Businesses can submit the application directly or via email. Electronic portal of the tax authority.
Step 2: Verify your profile
The tax authorities check the legality and completeness of the documents:
- Compare the declaration form and the payment documents.
- Check for any overpaid taxes.
- Compare with previous tax filing periods to determine if the business has violated any regulations.
Step 3: Making a tax refund decision
If the application is valid, the tax authority will issue a decision on corporate income tax refund and notify the company of the time the refund will be credited to its account.
Time limit for processing corporate income tax refund applications
According to Article 75 Law on Tax Administration 2019 Regulations on the time limit for processing tax refund applications are as follows:
For files subject to pre-refund and post-inspection
After submitting the tax refund dossier to the tax authority, if the tax refund dossier does not fall under the subject and case of refund or does not contain enough information for the tax authority to determine, the tax authority shall send a notice to the taxpayer within 03 working days from the date of receiving the complete tax refund dossier.
If the tax refund dossier meets the conditions for tax refund, the tax authority shall issue a tax refund decision within no more than 06 working days from the date of receipt of the complete tax refund dossier.
For files subject to pre-inspection, post-refund
The tax authority shall conduct an inspection at the taxpayer's headquarters and issue a tax refund decision within no more than 40 days from the date of receipt of a complete tax refund dossier.
Things to note when claiming corporate income tax refunds.
To ensure that the corporate income tax refund process is quick, safe, and in accordance with the law, businesses need to pay attention to the following important points:
- Verify the completeness and validity of documents: All invoices, receipts, payment vouchers, and accounting records must be accurately, completely, and legally documented. Standardizing documents makes it easier for tax authorities to verify them, reducing the risk of rejection or repeated requests for additional information.
- Monitor notifications from the tax authorities: During the tax refund process, the tax authorities may request businesses to provide additional documents, explanations, or adjustments to their records. Closely monitoring these notifications helps businesses respond promptly, avoiding missed deadlines and delays in receiving their tax refunds.
- Stay updated on the latest policies and regulations: 2025 will see some changes to corporate income tax filing procedures and incentives. Businesses need to be aware of these regulations to prepare accurate documentation, optimize tax refund processing time, and ensure legal compliance. Staying up-to-date on these changes also helps businesses take advantage of legitimate tax incentives.
Standardizing documentation, monitoring tax authority notifications, and staying updated on the latest policies are essential steps to ensure a smooth, fast, and transparent corporate income tax refund process.
Common mistakes in the corporate income tax refund process
The corporate income tax refund process can sometimes be hampered by common errors in documentation and procedures. Understanding these errors and how to avoid them will help businesses shorten the refund processing time and reduce risks from the tax authorities.
| Common errors | Detail |
| Submitting documents with missing supporting evidence. | Businesses submit applications but lack relevant invoices, receipts, payment documents, or accounting reports. |
| Incorrect tax identification number or business information | Errors in tax identification numbers, business names, or addresses can lead to rejected applications or requests for corrections. |
| Mistake in the tax period | Incorrectly declaring the tax period, for example, mistakenly stating the fiscal year or settlement period. |
| Not monitoring notifications from the tax authorities. | After submitting the application, missing the request for additional documents or explanations can lead to delays in tax refunds. |
Identifying common errors and applying the right preventative measures helps businesses process corporate income tax refunds quickly, accurately, and in full compliance with the law. Carefully reviewing documents, checking supporting evidence, correctly determining the tax period, and monitoring notifications from the tax authorities are essential steps to ensure a smooth refund process.
Start reviewing your records and preparing your documents today to ensure the corporate income tax refund process runs as smoothly, quickly, and efficiently as possible.
Conclude
Maintaining complete, transparent, and compliant accounting records helps businesses reduce the risk of errors when filing corporate income tax refund applications. By accurately recording income, expenses, and financial transactions, tax authorities can easily verify the records, shorten the inspection time, and make tax refund decisions.
The corporate income tax refund process is a legitimate right that helps businesses optimize cash flow, improve financial management efficiency, and comply with the law. By preparing complete and valid documents and adhering to procedures, businesses can shorten the time to receive tax refunds, avoid errors, and reduce risks from tax authorities.
Contact information MAN – Master Accountant Network
- Address: No. 19A, Street 43, Tan Thuan Ward, Ho Chi Minh City
- Mobile / Zalo: 0903 963 163
- E-mail: man@man.net.vn
Content production by: Mr. Le Hoang Tuyen – Founder and CEO of MAN – Master Accountant Network, Vietnamese CPA Auditor with over 30 years of experience in Accounting, Auditing and Financial Consulting.
Editor MAN – Master Accountant Network














