In the context of the digital economy becoming a pillar of Vietnam's development, the Tax Department has been accelerating the modernization of its management through data digitization. One of the key tasks that business owners need to pay special attention to is updating their business account information. Circular 18/2026 of the Ministry of Finance on tax management records and procedures, households business Individuals and businesses currently operating must notify the tax authorities of their bank account or e-wallet number. This is not just a simple administrative procedure but a mandatory legal obligation, helping authorities control the flow of money transparently and supporting taxpayers in conducting electronic transactions safely and quickly.
Why do sole proprietorships need to complete account updates immediately?
Updating business account information is key to helping individuals and households operate stably in an increasingly stringent legal environment.
Ensuring compliance with the law and avoiding penalties.
According to regulations, all changes to bank accounts used for business purposes must be reported to the directly supervising tax authority. Proactively updating your business account information helps you avoid administrative risks, especially penalties related to late notification of changes to tax registration information.
Cash flow transparency and governance support.
By updating their business account information, household business owners are establishing a scientific financial management system. This helps to clearly separate personal expenses from operating costs, thereby ensuring accurate tax declarations (either lump-sum or declaration-based), and minimizing errors during periodic audits.
Promoting the digitalization process of the tax sector.
The simultaneous updating of business account information by all household businesses will create a massive shared database, enabling the General Department of Taxation to deploy value-added services such as electronic tax refunds and cashless tax payments via QR codes synchronously nationwide.
The entities and types of accounts that need to update their business account information.
Join MAN – Master Accountant Network in exploring Circular 18/2026/TT-BTC to understand its scope of application and to fully update your business account information.
Required subjects
All operating businesses, newly established businesses, or businesses that are temporarily suspended but still retain their tax identification numbers are required to update their business account information. This regulation applies regardless of revenue size or industry sector.
The types of accounts included in the declaration list.
Many business owners are still confused about which accounts need to be reported. To complete the process of updating your business account information, you need to prepare the following information:
- Main bank account: An account held in the name of the business owner or household head, used for transactions with partners.
- E-wallets: Types of wallets such as MoMo, ZaloPay, ShopeePay… are used to receive payments from individual customers.
- Personal accounts used for business purposes: This is a point that requires special attention. According to Dan Tri NewspaperIf you use a personal bank account to receive sales revenue, you are required to update the business account information for that account to ensure legal transparency.
Timeline for updating business account information
Understanding deadlines is crucial to avoiding violations. Household owners need to remember the following deadlines for updating their business account information:
Term for existing household businesses
For businesses that have been operating for some time, the final deadline to complete the update of their business account information is April 20, 2026. According to Dan Tri newspaper, this is the last day for the tax authorities to complete the data matching for the new tax management roadmap.
Time limit for newly established household businesses
For new households, updating business account information must be done at the time of submitting the first tax return. Doing so simultaneously ensures that the initial tax registration process is complete and compliant with the law.
Deadline for changes to information
Throughout the course of operation, if you open additional accounts at banks such as Vietcombank, MB Bank, or close an old account, and there are any changes to your information, the business owner has 10 days to update the business account information. After this deadline, the system will record it as late submission of the updated information.
| Classify | Duration | Note |
| Currently operating | Before April 20, 2026 | Note the deadline to complete it early. |
| New to the business | Same period as the first tax return | This is required to enable electronic tax filing. |
| Open/Close Accounts | Within 10 days | Counting from the date the documents are signed at the bank. |
| Change e-wallet | Within 10 days | This applies to both personal and business wallets. |
Note: Proactively updating business account information early will help avoid system overload during peak days leading up to April 20, 2026.
Instructions for completing Form 01/BK-STK to update business account information.
Form 01/BK-STK is the most important document in the file. Even a small mistake can disrupt the process of updating business account information.
Accurate identification information
When filling out the form to update business account information, the account holder's name must absolutely match the name on the Citizen Identification Card or Business License. The tax authority's automated verification system will reject the application if there are any discrepancies in punctuation or characters.
Account number and bank information
The business owner needs to clearly state the account number (not the ATM card number), the bank name, and the branch. For e-wallets, the account number is usually the registered phone number. Careful record-keeping helps ensure a smooth process when updating the business account information.
Start date and purpose of use
Clearly specify the date you started using the account for sales. This information helps the tax authorities classify the cash flow from the time you began updating your business account information.
Reference full accounting service from MAN – Master Accountant Network This will help you complete the procedure quickly and efficiently.
Procedure for updating business account information online through Public Services.
Access the portal https://dichvucong.gdt.gov.vn/tthc/homelogin This is the quickest way to fulfill this obligation on a computer.
Steps to follow:
- Login: Access the system using your tax identification number. If you don't have an account yet, you need to register immediately to avoid missing the deadline for updating your business account information.
- Select the function: Find the category "Account/E-wallet number notification".
- Data entry: Fill in the information according to the prepared Form 01/BK-STK. All data must be checked at least twice before confirming the update of the business account information.
- Digital Signature and Submission: Use your electronic digital signature to complete the process. The system will return a transaction code so you can track the status of your business account updates.
Use eTax Mobile to update your business account information.
For business owners who prioritize convenience, eTax Mobile is the leading solution. Updating business account information on the mobile app saves considerable time.
- Bank linking: The application is now integrated with major systems such as Vietcombank, TechcomBank, and MB Bank, making it only a few minutes to update business account information.
- Security verification: After entering your account number, simply enter the OTP code to confirm the update of your business account information.
- Status Tracking: You can check whether your account has been approved by the tax authorities for updating your business account information directly on the application's main screen.
For large-scale businesses or those with multiple complex bank accounts, updating business account information independently can present significant technical challenges. Contact Contact MAN – Master Accountant Network for timely advice and support.
MAN provides customer support:
- Verify the legality of account types before updating business account information.
- Prepare Form 01/BK-STK accurately according to the regulations of the General Department of Taxation.
- Instructions on how to use the Public Service Portal and eTax Mobile to update business account information within the deadline.
- Provide explanations to the tax authorities in case of data discrepancies after updating business account information.
Security precautions when updating business account information.
During the process of digitizing and updating business account information, information security must be given top priority:
- Do not provide your eTax Mobile password to strangers when seeking assistance in updating your business account information.
- Only update your business account information on official websites with the .gov.vn domain extension.
- Carefully check the OTP code before confirming any changes related to updating your business account information.
Conclusion and recommendations
With the April 20, 2026 deadline fast approaching, homeowners should proactively review their bank accounts and e-wallets.
Don't let administrative hassles hinder your business. Updating your business account information on time is not only a legal responsibility but also a way to demonstrate credibility and professionalism to authorities and business partners.
Contact information MAN – Master Accountant Network
- Address: No. 19A, Street 43, Tan Thuan Ward, Ho Chi Minh City
- Mobile/Zalo: 0903 963 163 – 0903 428 622
- Email: man@man.net.vn
Content production by: Mr. Le Hoang Tuyen – Founder & CEO MAN – Master Accountant Network, Vietnamese CPA Auditor with over 30 years of experience in Accounting, Auditing and Financial Consulting.
Frequently Asked Questions about Updating Business Account Information
In practice, many complex legal situations arise. MAN – Master Accountant Network has compiled and answered the following issues:
No. The current regulations only apply to payment accounts (current account deposits) and e-wallets capable of receiving and sending money. Credit cards are a loan limit, not a cash flow account, and therefore are not subject to mandatory updating of business account information.
Yes. Any changes to account numbers (whether due to subjective or objective errors on the bank's part) must be updated in the business account information within 10 working days. If the old account number no longer exists in the bank's system but still exists in the tax system, your electronic tax payment transactions will be suspended.
Legally, only the business owner (the person named on the business license) has the right to update the business account information. However, if you have registered for an electronic tax account and have a digital signature, updating the business account information can be done online by anyone who holds this confidential information. In the case of submitting a paper application, the person submitting on your behalf must have a valid authorization letter as required by law to complete the business account information update. Do I need to update my business account information for my credit card?
If the bank changes my account number due to a system switch, do I need to update it?
If the head of the household is away, can a family member update the business account information on their behalf?
