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On March 31, 2026, the Tax Department issued Official Dispatch No. 1902/CT-CDS on coordinating the prevention of tax fraud committed through the simultaneous use of two or more financial accounting systems within the same accounting period. This is a serious violation of the law.
To ensure timely prevention and detection, the Tax Department requests relevant organizations (including accounting software companies) to implement the following measures:
- Do not develop, integrate, or support the deployment of software systems capable of operating two or more parallel financial accounting systems for the same business entity within an annual accounting period.
- Proactively integrate warning mechanisms, record data modification histories, and automatically detect abnormal signs within the accounting software, promptly notifying clients to prevent tax fraud.
- Connect sales management and accounting software with electronic invoice solutions to automatically and fully transmit taxpayers’ e-invoice data to the tax authority based on each actual transaction.
- Coordinate closely with the tax authority in providing information regarding clients operating parallel financial accounting software systems (including Taxpayer Name, Tax Identification Number, and Address).
- Compile a list of all clients who have used the financial accounting software provided by the Organization up to March 31, 2026, according to the attached template, and submit it to the Tax Department before April 8, 2026. Simultaneously, on a periodic basis before the 5th of the following month, Organizations must submit updated information on any changes to the list.
View and download Official Dispatch 1902/CT-CDS
Businesses must review their accounting systems and internal procedures to ensure the operation of only a single accounting book system within each accounting period, while strictly controlling access rights and data modifications.
Furthermore, it is recommended to seamlessly integrate accounting, sales, and e-invoicing software, as well as establish warning mechanisms and audit trails for the early detection of any abnormal signs.
Finally, businesses need to proactively coordinate with and provide complete information to the tax authorities, maintaining transparent records to minimize risks during inspections and audits.
