The freeapps.vn lookup tool at mst.freeapps.vn supports business tax codes (MSTs) but not personal MSTs. This article explains when to use the freeapps.vn tool and when you must use official channels.
What does the freeapps.vn tool do?
The tool at mst.freeapps.vn aggregates public information about Vietnamese businesses:
- Company name
- Registered address
- Legal representative
- Business activities
- Operational status
This is all information that’s legally permitted to be public, and anyone can look it up. The freeapps.vn tool just helps you query it faster without navigating multiple steps on official portals.
When the freeapps.vn tool DOESN’T work
When you need a personal tax code. Personal MSTs are tied to individuals (yours, family members, colleagues) and are not public information — only the owner can access them after verifying their identity with a national ID.
The freeapps.vn tool only handles public information → it cannot access personal MSTs. You must use official channels.
How to look up your personal MST — 3 official channels
Channel 1: VNeID app
VNeID is Vietnam’s official digital identity app from the Ministry of Public Security — integrating many public services including personal MST lookup.
How to use:
- Install VNeID from App Store / Google Play (only the official Ministry of Public Security version)
- Log in with your national ID and password
- Go to Public Services → Tax → Look up tax code
- The system displays your MST (if you have one)
Channel 2: Tax Department public services portal
Visit gdt.gov.vn — find “Personal tax code lookup” → log in with national ID.
Channel 3: E-tax portal
Visit thuedientu.gdt.gov.vn — requires registration with national ID and OTP/email verification.
freeapps.vn tool vs official channels
| Situation | Which to use |
|---|---|
| Quick company info lookup | freeapps.vn tool |
| Verifying a company name on an invoice | freeapps.vn tool |
| Finding an MST when you only know the company name | freeapps.vn tool |
| Looking up your own personal MST | VNeID / gdt.gov.vn |
| Year-end tax filing | Official channel (thuedientu.gdt.gov.vn) |
| Need an official certified document | Official channel + request a formal document |
Frequently asked questions
I forgot my personal MST — how do I find it? Log in to VNeID or the Tax Department portal with your national ID — the system displays it automatically.
An employer is asking for my personal MST? Look it up yourself through the official channels above, then provide it to them. Employers do not have the right to look up your personal MST.
Can anyone look up my personal MST? No, unless they log in with your national ID (which is illegal).
Is the freeapps.vn tool safe? The tool only queries public information, requires no login, and doesn’t collect personal data. See Legal page for details.
Summary
- Business MST lookup → use mst.freeapps.vn for speed, or gdt.gov.vn for official data
- Personal MST → must use VNeID or the Tax Department portal
- For any legal procedure → always use official sources from the Tax Department
Disclaimer: This article is a usage guide for the freeapps.vn tool and an introduction to official channels — not legal, accounting, or tax advice. The freeapps.vn tool aggregates public information and is for reference only. For any matters regarding personal tax, filing, or year-end settlement, please use the official Tax Department channels or consult a licensed accountant or lawyer. See Legal page.