Knowledge base
Direct answers, with sources and a named author
Short articles on the tax, invoicing and applied AI questions businesses face. Each one states its legal basis, author and update date.
Tax and invoices5 min read
Purchase invoices from 5 million VND: a 10-minute self-check
The rules to know and how to check your invoice ledger with a free review tool.
Vũ Hồng Điệp ·
Tax and invoices6 min read
Household businesses in 2026: what to prepare above 1 billion VND revenue
Key tax and invoicing changes for household businesses in 2026, plus five things to prepare.
Vũ Hồng Điệp ·
AI search5 min read
How do you get ChatGPT and Gemini to recommend your business?
How AI assistants choose sources, and seven concrete steps to take.
Vũ Hồng Điệp ·
Applied AI4 min read
Where should a small business start with AI?
Five steps you can deliver in 30 days, plus data safety rules.
Vũ Hồng Điệp ·