Expanding into new business lines is a natural growth step for an FDI enterprise — a manufacturer wants to add distribution trading, a services company wants to add training, a processing workshop wants to sell directly to the market. But for a foreign-invested enterprise, a business line is not merely a line on the enterprise registration: it is project content recorded on the Investment Registration Certificate (IRC) and tied to market-access conditions reserved for foreign investors. This article sets out the IRC amendment procedure for adding business lines, the extra dossier for conditional lines, and the red line on when business may actually start.
Why adding a business line must pass through the IRC first
Under the Law on Investment No. 143/2025/QH15 and Decree No. 96/2026/ND-CP, the project’s operational objectives — the business lines the investor carries out in Vietnam — are content recorded on the IRC. For a domestic investor, adding a business line is mainly an enterprise registration notification; for an FDI project, the investment registration authority must appraise the new line on two layers: market-access conditions for foreign investors under the List of sectors with restricted market access issued with Decree 96/2026/ND-CP (ownership ratios, investment forms, operating scope), and sectoral business conditions if the line falls under Appendix IV of Law on Investment 143/2025/QH15. Only after the IRC is amended to record the new line does the enterprise update the corresponding enterprise registration content on the Enterprise Registration Certificate under Decree No. 168/2025/ND-CP. Reversing the order — enterprise registration first, IRC later — is a common sequencing error that forces the dossier to be redone.
The amendment dossier for adding business lines
Components and appraisal focus by line type
- A written request for amendment of the Investment Registration Certificate, stating the business line to be added and its corresponding sector code.
- A copy of the current Investment Registration Certificate.
- An explanation of the new line: its concrete activities, its link to the existing project, and needs for location, labour and additional capital if any.
- The investor’s or owner’s decision to expand the operational objectives of the project and of the economic organization.
- For conditional lines only: documents proving satisfaction of market-access conditions (capital structure, investment form) and pre-check sectoral conditions, or commitment letters for post-check conditions.
As to processing time, a dossier adding an unconditional line usually follows the normal IRC amendment rhythm; a dossier with a conditional line requires opinions from specialised authorities and in practice takes longer — the enterprise should ask the receiving authority about the consultation progress rather than assuming a fixed deadline. If the new line also entails a capital increase, a location change or a scale expansion, those contents should be combined in the same amendment dossier to avoid multiple rounds.
The red line: no operating the new line before the amended IRC
This is where enterprises breach most often, usually under commercial pressure: signing contracts and issuing invoices for the new activity while the amendment is still being processed. Legally, operating outside the content registered on the IRC is implementing the project inconsistently with the investment certificate, punishable under Decree No. 122/2021/ND-CP, while revenue from the unregistered activity may be separately examined by tax authorities as to cost and invoice validity. Market preparation — research, conditional negotiation, standby recruitment — is not prohibited; but actual business operations must wait until the IRC amendment and the enterprise registration update are both complete.
Common mistakes when adding business lines
The first mistake is declaring the line too broadly or using a name that does not match the economic sector code system, forcing appraisers to demand clarification of the actual scope. The second is forgetting to check market-access conditions for the new line — especially services sectors with foreign ownership caps — so the dossier is refused after weeks of waiting. The third is amending the IRC but forgetting to update the enterprise registration, or vice versa, creating a content mismatch between the two certificates that banks and partners will spot in due diligence.
Practical conclusion: treat adding a business line as a “mini project” that must pass the investment appraisal gate: research market-access conditions first, prepare explanations and condition documents for the right layer, amend the IRC before updating the enterprise registration, and start operating the new line only after both certificates record it. In that order, expansion is a normal growth procedure, not a compliance risk.
Checking the new line against everything else it touches
A new business line rarely changes only the IRC; it propagates through the enterprise’s whole compliance map, and the amendment is the right moment to trace that propagation deliberately. The new activity may require its own operating licence or eligibility certificate under specialised law, a different tax treatment or invoicing practice, additional labour with certified qualifications, insurance cover matched to new risks, and physical premises that satisfy the new line’s own facility conditions — a warehouse line added to an office-based project is the classic example of a line that quietly imports a location problem. The capital account and banking arrangements may also need attention if the new line brings export revenue, foreign-currency costs or related-party transactions that the original project never had. On the investment side, investors should confirm that adding the line does not disturb the conditions of incentives the project already enjoys, since some incentives are granted for a defined activity scope. None of this is an argument against expansion; it is an argument for treating the IRC amendment dossier as the project’s change-management document, in which the new line’s legal, tax, labour and premises consequences are listed and assigned before the first contract under the new line is signed.
Frequently Asked Questions
How is the IRC amended to add a new business line?
File the IRC amendment dossier at the investment registration authority: the amendment request, a copy of the current IRC, an explanation of the new line and the investor’s decision. After the IRC is amended, update the corresponding business lines on the enterprise registration under Decree 168/2025/ND-CP.
What extra documents does a conditional new line need?
Documents proving satisfaction of market-access conditions for foreign investors under the List issued with Decree 96/2026/ND-CP — such as capital structure and investment form — plus sectoral conditions: satisfied in advance for pre-check conditions, committed with a timeline for post-check ones.
Can the new line be operated while the amendment is pending?
No. Operating a line not yet recorded on the IRC is implementing the project inconsistently with the certificate, punishable under Decree 122/2021/ND-CP and risky for invoices and costs. Only market preparation is allowed during the wait.
