[In-Depth] 2026 Tax Reform SMR Tax Credit: AI Power Demand and Structural Changes in the Nuclear Value Chain
With Small Modular Reactors (SMRs) designated as a National Strategic Technology in the 2026 tax reform, tax credits of up to 50% for R&D and 30% for facility investments have been finalized. We analyze the impact on the domestic nuclear value chain amidst surging AI infrastructure power demand.
AI Infrastructure Expansion and the Rise of SMRs
In the second half of 2026, as global big tech companies accelerate their investments in artificial intelligence (AI) infrastructure, the power demand for data centers is increasing exponentially. Small Modular Reactors (SMRs) have taken center stage in the market as a highly viable alternative to resolve this power bottleneck. Compared to traditional large-scale nuclear plants exceeding 1,000 MW, SMRs offer shorter construction periods and flexible deployment, positioning them as a core power source capable of achieving both energy security and carbon neutrality. However, SMRs inherently require a minimum of 1 trillion KRW in capital injection for initial technical design and demonstration, presenting structural limitations for a single private company to bear all financial risks. Market experts have consistently pointed out that institutional support at the government level for stable financing is a prerequisite for the blossoming of the SMR industry.
2026 Tax Reform: National Strategic Technology Designation and Ripple Effects
The '2026 Tax Reform' recently announced by the Ministry of Economy and Finance demonstrates the government's clear policy intent to overcome these capital constraints. As the scope of the National Strategic Technology support—previously concentrated on 'hydrogen'—expands to 'Future Energy', core technologies related to SMRs and Micro Modular Reactors (MMRs) have been officially included.
Under this measure, companies researching related technologies and expanding facilities will benefit from unprecedented tax incentives compared to general technology investments. The specific scale of support in the reform plan is as follows:
- Research and Development (R&D) Costs: A tax credit of up to 40-50% for small and medium-sized enterprises (SMEs), and up to 30-40% for large and mid-sized companies.
These tax supports are expected to create synergy with the 'SMR Special Act' scheduled for full implementation in September 2026. They will serve as a decisive catalyst, improving the cash flow of companies that were in the initial technology development stage and accelerating investments for full-scale commercialization.
Restructuring of the Domestic Nuclear Value Chain and Investment Market Outlook
The designation of SMRs as a National Strategic Technology is highly likely to trigger a new capital expenditure (CAPEX) cycle across the capital market and the entire nuclear ecosystem. As the domestic supply chain, historically centered on large commercial nuclear plants, realigns toward manufacturing core SMR components and modules, direct benefits are expected for small and mid-sized equipment manufacturers producing reactor vessels, steam generators, coolant pumps, and specialized valves.
According to statistics from the Korea Atomic Industrial Forum, over 40% of the approximately 560 nuclear-related companies in South Korea are considering plans to transition their existing processes to SMR-related module production. These tax credit incentives will drive companies from the review stage to actual factory expansions and facility upgrades. This provides the rationale for upward revisions of earnings estimates for nuclear-related stocks starting in the second half of 2026, aligning with the recent market trend where foreign buying has driven a collective rally.
In conclusion, as the global SMR market enters its full-fledged blossoming phase, securing cost competitiveness within the domestic value chain through preemptive tax support is imperative. Beyond short-term stock price momentum, this will serve as a structural turning point that directly leads to an expansion of market share for Korean companies in the global next-generation nuclear export market, which is estimated to be worth tens of trillions of KRW.