Taiwan Semiconductor Supply Chain Geopolitics: Hub Status Intact

The declaration came during discussions about the US-Taiwan semiconductor investment deal, which totals US$250 billion over five years. The deal structures investment as parallel expansion rather than capacity transfer: Taiwan’s foundries invest in US facilities while maintaining and expanding their Taiwan base. Vice Premier Cheng’s statement, reported by CNBC in February 2026, made explicit what the semiconductor industry had long operated on the assumption of: Taiwan’s domestic semiconductor capacity is not negotiable.

TSMC’s N-2 rule, which prohibits overseas fabrication plants from operating at the company’s most advanced process nodes, was cited as a technical constraint. A fab is a semiconductor manufacturing facility. A process node refers to the transistor dimension in nanometres at which chips are manufactured, with smaller numbers representing more advanced, denser production. The N-2 rule means overseas fabs are always at least two process generations behind Taiwan’s most advanced production. This constraint is a strategic choice, not a regulatory one.

Semiconductor manufacturing requires decades of supply chain development. Taiwan’s semiconductor industry employed approximately 318,000 people as of 2022, according to TSMC’s 2022 Annual Report, with the majority holding specialist roles that take years to develop. The ecosystem includes specialist suppliers covering chemicals, gases, equipment maintenance, photomask production, and process engineering. Photomasks are the precision quartz plates that carry circuit patterns, projected onto silicon wafers during the manufacturing process to define the structure of each chip layer.

Relocating this manufacturing base to the US fails for capability reasons rather than financial ones. Capital is available: the CHIPS and Science Act committed US$52 billion in subsidies, and TSMC has committed US$65 billion to three Arizona fabrication facilities, according to the company’s investor relations communications. What cannot be transferred is the accumulated human capability and supplier depth built over four decades in Taiwan. TSMC’s advanced-node fabs consistently achieve yields and utilisation rates that competitors have not matched, a performance gap reflected in its gross margins of approximately 53%, compared with an industry average closer to 35% for foundry operations, according to TSMC’s 2023 Annual Report.

India has emerged as an alternative manufacturing location. The India Semiconductor Mission, run by the Ministry of Electronics and Information Technology, has approved ten semiconductor manufacturing projects since 2023. The largest, a joint venture between Tata Electronics and PSMC of Taiwan, targets 28 nanometre production, which is three to four process generations behind TSMC’s current leading edge. India is building foundry capability, but at mature nodes rather than leading-edge ones.

For electronics companies across Asia, Taiwan’s stance maintains supply chain stability. SK Hynix continues to rely on TSMC for advanced logic chips used in its own products. Samsung’s foundry division competes directly with TSMC for external customers rather than depending on it, though Samsung Electronics sources certain advanced logic from Taiwan for specific product lines. Japanese automakers depend on Taiwan for automotive-grade chips. The geopolitical tension adds risk but does not change the fundamental economics.

Taiwan’s production concentration creates both vulnerability and efficiency. Manufacturers pay premium prices for access but gain leading-edge capability unavailable elsewhere at scale.

The semiconductor supply chain is not monolithic, and risk profiles differ sharply by chip category. TSMC dominates advanced logic at N3 and below, supplying AI accelerators (chips purpose-built to run machine learning computations at scale), smartphone processors, and high-performance computing chips. This segment has no viable alternative at scale.

Samsung and SK Hynix control the market for dynamic random-access memory (DRAM, which holds data while a device is running) and NAND flash storage (which stores data persistently). Both are produced primarily in South Korea and are less Taiwan-dependent than advanced logic.

Automotive chips typically operate at mature 28 to 40 nanometre process nodes and are produced by Renesas, Infineon, and STMicroelectronics across facilities in Europe and Japan. The automotive supply chain has deliberately pursued multi-supplier strategies since the 2021 chip shortage exposed its single-source vulnerability.

Supply chain directors must segment their semiconductor risk by product type. A consumer electronics company faces near-total TSMC dependency for its most advanced components. An automotive manufacturer operating at mature nodes has more diversified exposure and more time to adjust if Taiwan supply becomes constrained.

Taiwan’s role in global semiconductor production is not at risk in the near term. The island’s technological lead, the N-2 rule, the depth of its manufacturing supply chain, and the strategic calculus of its government all point toward sustained concentration rather than dispersal.

The companies managing this risk most effectively focus on building resilient inventory buffers, dual-sourcing where mature-node alternatives exist, and pricing the Taiwan risk premium into product margins before a disruption makes that calculation urgent.