The incentive frame for an ATP plant: preferential rate, 4 years exempt, 50% off for the next 9
Semiconductor assembly, packaging and testing (ATP) plants are the segment Vietnam is attracting most strongly in the global chip chain. For tax, high-tech and semiconductor projects sit in the highest incentive tier of the Law on Corporate Income Tax No. 67/2025/QH15 — Article 18 on incentive conditions, Article 19 on entry into force (only three clauses, clause 1 applying from 1 October 2025) and Article 20 on transition; sector and location conditions tie to the Law on Investment No. 143/2025/QH15 (replacing Law No. 61/2020/QH14 from 1 March 2026). The scenario below uses the typical top-tier frame — a 10% preferential rate for 15 years, exemption for 4 years from the first year of taxable income, and a 50% reduction for the following 9 years — as an illustration of the tax cash-flow shape; the exact package for a given project must be confirmed against the incentive provisions and investment file of that project when applied.
Two timing anchors drive the whole scenario: the incentive clock starts from the first year of taxable income (not the year of investment registration), and loss years can still consume the exemption period once revenue begins — this start-point mechanism is analysed separately in the article on when the CIT holiday starts (FDI-LC-4082, this batch). The global minimum tax layer for a semiconductor plant, including a USD 1 billion project scenario, is analysed in FDI-LC-4017; for a Texas/Arizona comparison see EXP-3749. This article goes deep only on the year-by-year CIT incentive flow.
Year-by-year illustration: assumed taxable income of VND 1,000 billion per year from year 5
Illustrative assumption: the plant operates commercially from year 1, years 1–4 are capacity ramp-up with no material taxable income (zero for illustration), and from year 5 taxable income stabilises at VND 1,000 billion per year. If the exemption clock starts in the first taxable-income year (year 5 on this assumption), the tax flow is: years 5–8 (4 exemption years): tax payable nil, against VND 200 billion per year at the standard 20% rate. Years 9–17 (9 reduction years at 50% of the 10% preferential rate): effective rate 5%, paying VND 50 billion per year instead of 200 billion. From year 18, once the 15-year preferential rate period also closes: back to the standard 20%, paying VND 200 billion per year. Across years 5–17 the scenario pays VND 450 billion in total versus VND 2,600 billion without incentives — the nominal value of the package on flat income assumptions.
Three warnings when using this table. First, real taxable income swings hard with the semiconductor cycle, so the incentive value must be computed on the project’s own forecast, not by copying illustrative figures. Second, if the group is in scope of the global minimum tax (consolidated revenue of EUR 750 million or more), effective rates of 0–5% during the holiday will trigger the QDMTT top-up layer under Resolution 107/2023/QH15 and Decree 236/2025/ND-CP, making the incentive worth less than its nominal value — see FDI-LC-4017. Third, loss carry-forward rules shift the first taxable-income year, moving the whole holiday schedule.
Conditions to keep the incentives: granted once is not kept forever
Incentives survive only while the project continuously meets the conditions on which they were granted: maintaining its high-tech/incentivised-sector character (including criteria on high-tech revenue or research personnel ratios, or corresponding certification), implementing the registered investment schedule and scale, separately accounting for incentivised income, and reporting to the licensing authority and the tax authority. A fundamental change of activity (for example drifting from ATP into pure trading) or failure to meet committed capital/revenue conditions can terminate the incentives and claw back amounts exempted — the clawback mechanism for missed conditions is analysed in FDI-LC-4079 in this batch.
Recommendation: keep an ‘incentive conditions file’ alongside the tax file — certifications, progress reports and high-tech criteria evidence year by year — so that when the authority reviews (usually near the end of the exemption stage), proving continuity of conditions is a filing exercise, not a reconstruction exercise. And before locking the financial model, run the QDMTT scenario next to the domestic-incentive-only scenario: for a large semiconductor project, the second scenario is the one that decides real value.
Frequently Asked Questions
What tax incentives does a chip plant get?
Under the typical top-tier frame for semiconductor/high-tech projects in the Law on Corporate Income Tax No. 67/2025/QH15: a 10% preferential rate for 15 years, 4 years of exemption from the first year of taxable income, and a 50% reduction for the following 9 years. The exact package depends on the project’s sector, location conditions and approved investment file — the scenario here is illustrative and must be confirmed against the provisions applying to the specific project.
Can you calculate the exemption/reduction year by year as an example?
On the illustrative assumption of VND 1,000 billion of taxable income per year from year 5: the 4 exemption years pay nil; the 9 reduction years pay VND 50 billion per year (a 5% effective rate on the 10% preferential rate); total tax across the incentive period is VND 450 billion versus VND 2,600 billion at the standard 20%. Figures move with the project’s real income forecast and shrink if the group is subject to QDMTT top-up.
What conditions must be met to keep the incentives?
Keeping incentives requires the project to continuously meet the conditions on which they were granted: maintaining the incentivised sector/high-tech character, the registered investment schedule and capital scale, separate accounting for incentivised income, and full reporting. Losing a condition — a fundamental change of activity or missed capital/revenue commitments — can terminate the incentives and claw back exempted amounts (see FDI-LC-4079).
What is the actual tax after the incentives end?
Once both the preferential rate and the exemption/reduction stages end, the project pays the standard 20% on taxable income: on the illustrative VND 1,000 billion per year, that is VND 200 billion per year. If the group is in QDMTT scope, a top-up layer also applies during the incentive stage when the effective rate is below 15%; at the standard 20% rate that layer in principle no longer arises in Vietnam.
This article has been quality-reviewed by the FLAW AI Legal Council
