Choose Your Company's Business Lines Before You Register
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General information only, current at the time of writing. Rules for foreigners and small businesses in Vietnam change - please confirm your own situation before acting on it.
Direct answer
Registered business lines determine what a company may lawfully do and invoice for, and whether any permission beyond ordinary registration is required. Selecting them carelessly is among the few setup decisions that is genuinely awkward to correct, because a change can require returning to a stage the founder considered complete.
Most founders treat this as a form-filling step and spend their attention on the company name. The consequences run in the opposite direction.
What registered activities are
They are the list of activities a company is registered to perform. Not a description of ambitions, and not marketing language, but a defined boundary.
Two consequences follow from that boundary. It determines what the company may lawfully invoice for, and it determines which additional permissions apply. Neither is apparent from the form on which the selection is made.
The list also communicates what kind of company this is to everyone who examines the file later: banks conducting checks, landlords assessing a tenant, corporate customers running due diligence, and any future buyer or investor. A list that does not match what the business visibly does prompts questions at exactly the moments when questions are least welcome.
Why they matter more than the company name
Because nothing else in the registration controls what the company is permitted to do.
A company registered for consulting that begins selling physical goods has a problem that updating its website does not solve. A company registered for general trading that begins offering a regulated service has a larger one, because the activity requires a permission it has never applied for.
Customers notice as well. A corporate client conducting standard checks may compare what it is purchasing against what the supplier is registered to provide, and a mismatch holds up payment while the position is clarified. For a small company waiting on a first significant invoice, that delay arrives at the worst possible time.
"The company name is the decision founders spend most time on and it matters least. The activity list is the one they skim, and it is the one that comes back." - LotusGuard Vietnam Advisory
Conditional activities
Certain activities require something beyond ordinary company registration before trading may begin. Registration creates the company; the additional permission allows it to operate in that specific area.
| Position | What it means in practice |
|---|---|
| All intended activities are ordinary | Registration completes the permissions |
| One activity is conditional | A further step is required before trading in that area |
| Nobody checked | The company may exist and be unable to operate |
The third row describes a real and recurring outcome. The company is incorporated, the bank account is open, premises are leased, and trading cannot lawfully begin because a permission with its own processing period was never applied for. The lease runs throughout that period.
This is the highest-value question at the setup stage, and it costs one conversation. It should be settled before a lease is signed or a first employee is hired, because both of those commitments assume a start date.
Selecting the list
- Write down what the company will actually sell in its first year, in plain terms.
- Add what it realistically expects to sell within two years.
- Check each item for whether it is ordinary or conditional.
- Map them onto the official activity classifications. This is the step where an adviser earns the fee.
- Sequence any conditional activity so that its permission timeline does not block the launch.
- Stop. Activities should not be added because they sound substantial.
The second step prevents most future administrative work. A modest amount of forward thinking avoids an amendment procedure in year two, at a point when the company is trading and an interruption is expensive.
The fourth step is less mechanical than it appears. The official classifications do not map neatly onto how businesses describe themselves, and the same commercial activity can sit under different classifications with different consequences.
Registering too narrowly, and too broadly
Both are errors, and they fail differently.
Too narrow produces a customer that cannot be invoiced. The work is real, the customer is willing, and the company is not registered to perform it. The choice is then between declining the work and amending the registration at speed, which takes weeks the customer may not wait through.
Too broad can attach conditions belonging to activities the company never intended to carry out, and presents a confused picture to anyone examining the file. It also invites a question about what the business actually does, which is a question worth having a precise answer to when a bank or an investor asks.
The sensible position is accurate, with a margin for growth in directions genuinely expected. That is narrower than most founders' ambitions and broader than their first year.
When the business changes
Amending is the correct response, rather than invoicing quietly for something outside the registration.
Adding an activity is an ordinary procedure with its own timeline. Where the new line is conditional, the permission may take longer than the amendment, so the process should begin when the opportunity appears rather than when the contract is signed.
The list is also worth revisiting periodically. Many small companies drift over three or four years until what they do bears only partial resemblance to what they are registered to do. This is generally discovered during due diligence, when a buyer or investor is reading the file and forming a view about how carefully the company has been run.
A review once a year takes very little time and prevents the position from drifting far enough to require explanation.
Frequently asked questions
What are business lines on a company registration? They are the activities your company is registered to carry out. They are not a description or a marketing statement - they define the boundary of what the company may lawfully do and invoice for, and some of them trigger additional permission requirements.
What happens if I invoice for something outside my registered lines? At best it creates awkwardness with customers and your accountant. At worst you are billing for an activity the company is not registered to perform, which is a compliance problem rather than a technicality, and it can complicate your tax position.
Can I add a business line later? Yes, and many companies do as they grow. It is a procedure with its own timeline, which is precisely why it is better to think two years ahead at registration than to file an amendment every time you win an unexpected customer.
What is a conditional business line? An activity that requires something beyond ordinary company registration before you may operate - typically an additional permission. Whether your intended activity is conditional is knowable in advance, and it is one of the first things worth checking.
Should I register as many lines as possible just in case? No. An unnecessarily broad registration can pull in conditions you did not want and raises questions about what the company actually does. Aim for accurate and slightly forward-looking rather than maximal.
Conclusion
Registered activities define what a company may lawfully invoice for, which makes them the most consequential element of the registration. Whether any of them is conditional can be established in advance, and discovering it after a lease has been signed is the expensive version. And the correct breadth is accurate plus a realistic two-year margin, rather than either minimal or maximal.
For a review of intended activities before filing, talk to LotusGuard. This is a one-conversation problem when addressed early.
