ECUS5VNACCS Electronic Customs Declaration Software

Thai Son Technology Development Company (ThaisonSoft), headquartered in Hanoi, builds tax, customs, e-invoice and social insurance software for Vietnamese businesses and states more than 20 years of experience. Its customs product ECUS addresses the complex electronic declaration rules that exporters, importers and customs brokers must follow on Vietnam's VNACCS/VCIS system.

ECUS5VNACCS was assessed and certified by the General Department of Customs to exchange data with VNACCS/VCIS under document 1120/CNTT-CNTT of 17 November 2015. It handles import and export declarations, low-value declarations, transit, tax amendments, duty-exempt lists and temporary import-reexport, plus processing, export-production and export-processing-zone regimes with settlement reports. Add-ons include ERP integration, export e-invoice creation, ECUSSignPRO approval workflow and ECUSDrive cloud backup. Users range from SMEs to FDI manufacturers and customs agents.

• e-Declaration: manages IDA, EDA, MIC, MEC, OLA, AMA, TEA and TIA declarations on VNACCS.
• Special regimes: processing contracts, export production and export-processing-zone goods with norms and settlement.
• Online public services: declares more than 168 procedures on the customs online public service system.
• ERP integration: exchanges data with SAP and other systems in Excel, XML or JSON formats.
• ECUSSignPRO and ECUSDrive: free data-centre approval workflow and cloud backup of ECUS data.
• Reports: statistics on declarations and goods by time, criteria and declaration.

• An FDI electronics plant in an export-processing zone can declare goods in and out and file settlement reports.
• A customs brokerage can manage declarations for many clients with user permissions.
• A garment exporter on processing contracts can track materials, norms and contract liquidation.

• Declarations follow the latest customs rules through automatic updates of the program and standard data lists.
• Integration with SAP or other ERP systems via service or FTP folder removes double entry of declaration data.
• Export declaration data flows into the e-invoice system, so accountants issue invoices without retyping.
• Five 24/7 support centres across Hanoi, Ho Chi Minh City, Da Nang, Binh Duong and Dong Nai assist with customs issues.

Vietnam's customs authority keeps issuing new procedures, such as unified customs office codes from July 2026 and VNACCS user data clean-up from September 2026, while trade volumes grow. Exporters and FDI factories need declaration software that tracks these changes and links customs data with ERP and e-invoicing.

ThaisonSoft is headquartered at 15 Dang Thuy Tram, Hanoi, with offices in Ho Chi Minh City, Dong Nai and Da Nang. It reports 100,000+ businesses using its software, 90% of FDI enterprises as customers, and three consecutive Sao Khue awards in tax and customs for ECUS. Other products include E-Invoice, ETAX, eBH and iContract.