Short answer: an F-1 student may own a US business but may not work in it without authorization — the lawful bridge is Optional Practical Training (OPT): 12 months post-graduation (24 more for STEM), tied to the field of study, with a 90-day unemployment cap. On the Vietnamese side, funding the venture from Vietnam means outward-investment registration under the Investment Law 143/2025/QH15. Vietnam has no E-2 treaty with the US, so the popular “investor visa” shortcut does not exist for Vietnamese founders.
The F-1 work rule, precisely
US immigration law separates passive investment from active work. An F-1 student may invest in or own a company — buying shares, holding membership interests — but day-to-day operation, management, or drawing compensation for work performed counts as employment and requires authorization. “I wasn’t paid” is not a defense: unpaid work in one’s own startup is still work. The authorized channels are Curricular Practical Training (CPT, tied to coursework) and Optional Practical Training (OPT, up to 12 months per degree level, usable pre- or post-completion).
OPT for founders: what it allows and where it breaks
Immigration authorities confirm that starting a business counts as OPT employment when the work directly relates to the student’s major — a computer-science graduate building a software startup qualifies; an engineering student opening an unrelated restaurant does not. Conditions: proper business licenses, an EIN, and active engagement of at least 20 hours per week, with records proving the degree connection. On post-completion OPT, unemployment may not exceed 90 days total — days when the business is not genuinely operating count against you. The STEM OPT extension (24 months) raises the bar: the company must be enrolled in E-Verify, a formal training plan is required, and a bona fide employer-employee relationship must exist — the founder cannot be their own supervisor. When OPT ends, work must stop unless a new status (such as H-1B or O-1) takes over.
The E-2 myth for Vietnamese founders
The E-2 treaty-investor visa is unavailable to Vietnamese nationals because Vietnam has no E-2 treaty with the United States. Founders who build E-2 into their plan discover this only after spending money. Realistic longer-term paths include employer-sponsored H-1B (lottery-dependent), the O-1 for extraordinary ability, or a future employer’s green-card sponsorship — each with its own timeline that the startup plan must accommodate.
The Vietnamese side: sending money out lawfully
Capital leaving Vietnam for the US venture is outward investment governed by the Investment Law 143/2025/QH15: the investor needs an outward investment registration certificate and must move funds through the dedicated capital account via the banking system, with foreign-exchange compliance. Family “gifts” routed informally to fund the startup create two problems at once — a Vietnamese forex violation and a US source-of-funds question. Structure the funding before the first wire, not after.
Founder’s checklist
- Form the entity (LLC or corporation) at state level and obtain an EIN — formation alone does not authorize work.
- Secure OPT authorization before performing any work for the startup; document the degree relationship.
- Track the 90-day unemployment clock from day one of post-completion OPT.
- For STEM OPT: enroll the company in E-Verify and prepare the training plan early.
- Complete Vietnamese outward-investment registration before transferring startup capital.
- Plan the post-OPT status (H-1B, O-1) at least a year before OPT expires.
Frequently asked questions
Can I register an LLC while on F-1 without OPT?
Yes — forming and passively owning the company is allowed. What you cannot do without authorization is work in it: coding, selling, managing staff, or operating day to day.
Does unpaid work for my own startup violate status?
Yes, if it is the kind of work that would normally be paid. Immigration law looks at the activity, not the paycheck.
Can my co-founder sponsor me for H-1B through our own startup?
A startup can petition for H-1B, but the founder-owned-company scenario faces heavy scrutiny over the employer-employee relationship and must still win the lottery. Get immigration counsel before relying on it.
Can my parents in Vietnam just wire me the startup money?
Only through lawful channels: family support transfers follow forex rules with documentation, while investment capital needs outward-investment registration. Informal wires risk the funds and the founders’ status.
What happens if I work without authorization and get caught?
Status violation can lead to termination of the SEVIS record, loss of OPT, visa revocation, and bars on reentry. The downside dwarfs any short-term convenience.
Vietnamese student founder in the US? FLAT Law Firm coordinates the Vietnamese-side investment paperwork so your funding is clean — contact us.
This article has been quality-reviewed by the FLAW AI Legal Council