- Official Letter No. 5746/CT-CS (10 Aug 2026) explains key new points of Circular No. 89/2026/TT-BTC, which replaces Circular No. 80/2021/TT-BTC and guides tax administration under the Law on Tax Administration and Decree No. 252/2026/ND-CP.
- For VAT declaration, newly operating businesses with annual revenue over VND 50 billion must declare VAT monthly starting from the calendar year after they begin operations, even if they have operated for less than 12 months.
- Several VAT declaration forms are revised or added, including forms 01/GTGT, 03/GTGT, 04/GTGT, and new Appendix 01-8/GTGT for VAT refund request information.
- Circular No. 89/2026/TT-BTC takes effect on 1 July 2026; tax periods before that date still use the old forms.
- Full implementation of electronic tax transactions will follow the Tax Authority’s roadmap.
Source: vinabookkeeping.com
Note that this post was (partially) written with the help of AI. It is always useful to review the original source material, and where needed to obtain (local) advice from a specialist.
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