In 2024 the global minimum tax took effect in Vietnam and a series of FDI projects enjoying a 10% preferential rate had to rebuild their entire financial models — the most vivid illustration of incentive-policy change risk. Incentives are not immutable rights: they can be altered by new laws, new treaties or changed practical conditions. A well-prepared FDI project faces this scenario not with hope, but with legal protection layers built from the day the IRC was signed.
Protection layer one: transitional principles and incentive grandfathering
Vietnamese investment law maintains an investment-assurance principle when policy changes: where new rules set lower incentives, a project already enjoying incentives continues applying its recorded level for the remaining period, and where new incentives are higher, the project takes the higher level — the transitional provisions of Investment Law 143/2025/QH15 carry this principle forward for licensed projects. The operating conditions: incentives must be properly recorded in the investment registration certificate and the project must keep satisfying incentive conditions throughout operation.
The clear limit: grandfathering protects incentives committed to a specific project, not expectations about future policy for unlicensed projects, and does not block universal changes such as the global minimum tax — there the State uses alternative compensation tools (such as the Investment Support Fund) instead of restoring old incentives.
Protection layer two: treaties and investment protection
At the treaty level, FTAs and BITs to which Vietnam is a party protect investors through fair and equitable treatment, protection against uncompensated expropriation, and the right to transfer profits abroad. Where state measures breach treaty commitments, investors have complaint channels under the respective treaty mechanism — note that the EVIPA is not yet in force so the VN–EU investment court channel is not operating, and Vietnam is not an ICSID member, so investment arbitration, if any, typically follows UNCITRAL rules or another institution per the treaty.
The treaty layer is a last-resort safety net, not a daily management tool: investment dispute procedures run for years at high cost, suiting only large losses and clearly substandard state conduct. Its greatest practical value is negotiating leverage when working with state authorities on policy changes affecting the project.
Renegotiate or sue: the practical decision tree
When policy changes adversely, the rational response sequence is: quantify the impact and identify grandfathering bases (transitional rules, IRC commitments, separate approval documents); work with the investment registration authority and ministries to confirm application to the specific project — most differences are resolved at this interpretation step; negotiate a substitute compensation package (investment support, term extension, project-condition adjustments) where original incentives cannot be maintained; and consider treaty dispute channels only when losses are large, negotiation has failed and state conduct shows clear protection-standard breaches.
Conversely, where the change is minor or follows a pre-announced legislative roadmap with full transitional provisions, dispute costs far exceed benefits — the right strategy is operational adaptation and feeding the lesson into the next project’s design.
Prevention at design stage: contracts, IRC and structure
The most effective prevention layer is built before policy changes: record specific incentives (type, level, duration, conditions) fully in the IRC and approval documents rather than relying on general rules; place stabilization/change-in-law clauses in the joint venture contract and long-term land lease allocating law-change risk among private parties; and structure the investment through a jurisdiction with a strong protection treaty with Vietnam while the choice still exists — restructuring after a dispute arises creates no retroactive protection.
At the governance level, the project should maintain continuous incentive-condition compliance files (technology conditions, schedule, localisation ratios if any), because grandfathering only protects projects honouring their committed conditions; and review policy risk periodically along major law-revision cycles — incentive policy changes usually signal ahead through draft laws, leaving time to prepare negotiation options.
Frequently Asked Questions
How do transitional clauses work when incentive policy changes?
The grandfathering principle: a project already enjoying incentives keeps its recorded level for the remaining period when new policy is lower, and takes the better level when new policy improves — carried forward in the transitional provisions of Investment Law 143/2025. Conditions: incentives properly recorded in the IRC and the project complying with entitlement conditions; universal changes like the global minimum tax are not blocked but compensated through other tools.
What investment protection exists under law and FTAs?
Under law: assurance against unlawful asset nationalisation, incentive grandfathering when law changes and the right to transfer assets/profits abroad. Under FTAs/BITs: fair and equitable treatment, protection against uncompensated expropriation and treaty complaint channels — the EVIPA is not in force and Vietnam is outside ICSID, so investment arbitration typically follows UNCITRAL or the institution the treaty designates.
When should incentives be renegotiated, and when is suit appropriate?
Negotiate first: confirm transitional application with the registration authority, then negotiate a substitute package (support, extension, condition adjustments) where original incentives lapse — most cases end here. Treaty claims or suit only where losses are large, negotiation has failed and state conduct clearly breaches protection standards, given multi-year timelines and high costs.
What prevention strategy belongs in contracts and the IRC?
Record specific incentives (type, level, duration, conditions) fully in the IRC and approvals; add change-in-law clauses in the JV contract and land lease allocating risk among the parties; structure the investment from the start through a jurisdiction with a strong protection treaty with Vietnam (later restructuring has no retroactive effect); and keep continuous compliance with incentive conditions, as grandfathering protects only compliant projects.
This article has been quality-reviewed by the FLAW AI Legal Council