South Korea’s $350 Billion US Investment Pledge: Structuring Sovereign-Led FDI Amid Tariff and Profit-Sharing Disputes

Key takeaways

Table of contents

1. What happened and where the deal stands in 2026
2. Core sticking points: structure, profit sharing, tariff risk
3. Investor confidence and enforcement risk
4. Structuring sovereign-led FDI under tariff risk
5. Governance, communications, and enforcement planning
6. Counsel’s checklist: choosing instruments and safeguards
7. From term sheet to execution: an action sequence
8. Armenia as a diversification gateway
9. Conclusion
10. Frequently asked questions

What happened and where the deal stands in 2026

South Korea’s $350 billion FDI pledge to the United States has moved from political posturing to legislative reality. An MOU was signed in November 2025 as part of a broader trade accord, and South Korea’s National Assembly passed the Special Act in March 2026, creating the Korea-US Strategic Investment Corporation to manage deployment.

However, the MOU is classified as an administrative understanding that does not create legally binding rights or obligations. The Special Act takes effect three months after promulgation, meaning the corporation was not yet fully operational as of April 2026. The package breaks down into $150 billion for shipbuilding and $200 billion for strategic industries including semiconductors, pharmaceuticals, critical minerals, energy, AI, and quantum computing.

Despite the legislative framework, no publicly confirmed project-level disbursements had occurred as of early Q2 2026. Finance Minister Koo Yun-cheol indicated in January 2026 that deployment was unlikely to begin during H1 2026, with a $20 billion per year cap on disbursements. South Korea’s foreign-exchange reserves stood at approximately $423.7 billion in March 2026, up from $409.66 billion a year earlier, after peaking at $430.7 billion in November 2025.

The bipartisan passage of the March 2026 law, even following the December 2025 martial-law political crisis, demonstrated sustained cross-party support for the US-Korea investment relationship. For counsel advising sovereign-linked investors, the gap between legislative commitment and actual capital deployment is the central structuring challenge.

Core sticking points: structure, profit sharing, tariff risk

Investment structure: loans and guarantees vs. direct cash

Seoul structured the $350 billion as a mix of cash installments (capped at $20 billion per year), loan guarantees, and equity placements rather than a single upfront transfer. The Korea-US Strategic Investment Corporation manages the $200 billion strategic industries allocation, while the shipbuilding component operates through separate channels. This sovereign-directed but commercially filtered approach protects FX reserves while meeting US expectations for tangible capital commitment.

Profit distribution: the 50:50 to 90:10 shift

The agreed profit-sharing framework starts at 50:50 until principal is recovered, then shifts to 90% US and 10% Korea. For counsel, this asymmetric structure means Korean investors bear disproportionate downside risk in early stages while surrendering most upside after breakeven. Embedding adjustment mechanisms tied to tariff outcomes and deployment milestones is critical for rebalancing these terms in practice.

Tariff exposure: the current 15% rate and restoration risk

The November 2025 US-Korea trade deal reduced the tariff on South Korean automobiles from 25% to 15%, retroactive to November 1, 2025, as published in the Federal Register. In January 2026, the administration announced an intention to restore the 25% rate, but as of April 2026, no implementing action has appeared in the Federal Register or CBP guidance. The current legally applicable rate remains 15%.

For context, the baseline US tariff on non-Korean passenger vehicles is 2.5%, with light trucks at 25%. Section 232 tariffs add a further 25%, bringing the effective rate for countries without a trade deal to 27.5% for passenger cars and 50% for light trucks. Deal mechanics should not assume the 15% rate is permanent and should absorb timing uncertainty around potential restoration.

Investor confidence and enforcement risk

Policy shocks can undo carefully modeled returns. On September 4, 2025, a US immigration enforcement operation detained 475 workers (over 300 of them Korean nationals) at a Hyundai facility in Savannah, Georgia. Workers were released after approximately one week, with most repatriated to South Korea, though some subsequently returned to the US.

The incident prompted documented administrative responses: the US reaffirmed B-1/ESTA eligibility for Korean equipment installation workers, established a new embassy visa processing section, and created a coordination working group between Korean diplomatic missions and US immigration authorities. While no new statutory visa category was created, these administrative clarifications addressed some of the regulatory uncertainty that had chilled investor sentiment.

Cross-border enforcement risk, whether in immigration, trade, sanctions, or antitrust, requires explicit covenants, escalation channels, and pre-agreed communications protocols. Korean automakers, notably Hyundai Group, have committed approximately $21 billion in US investments for 2025-2028, including a Louisiana steel plant and a Georgia EV/battery complex targeting 300,000 vehicles annually. These commitments are explicitly tariff-motivated and therefore vulnerable to policy reversals.

Structuring sovereign-led FDI under tariff risk

Credit-enhanced loans via policy institutions

Use export-credit agencies and policy banks as primary lenders, with sovereign or agency guarantees to de-risk borrower credit and smooth deployment. This matches Seoul’s direction to have the Korea-US Strategic Investment Corporation lead, while the $20 billion annual cap provides natural pacing that limits FX exposure.

Staged equity with milestone gating

Deploy equity in tranches tied to operational milestones such as plant commissioning and supplier localization, rather than tariff outcomes. This decouples capital calls from volatile policy decisions. Include pause-and-reassess checkpoints if material trade barriers persist beyond specified longstop dates.

Tariff-change adjustment mechanics

Three tools address tariff volatility. First, a tariff ratchet that increases deployment pace or adjusts hurdle rates if tariffs drop to a defined threshold. Second, a make-whole or coupon step-up that elevates loan margins while tariffs remain above threshold and steps down upon relief. Third, an MFN-style clause that automatically extends any tariff concession obtained by comparable peers.

With the current 15% rate under the November 2025 deal and the risk of restoration to 25%, these mechanisms provide essential flexibility for both capital deployment timing and return modeling.

Profit-sharing with performance ratchets

The agreed 50:50 baseline (shifting to 90:10 US-favoring after principal recovery) can be supplemented with ratchets: if designated tariff relief is not achieved by a longstop date, shift a higher share of residuals to the capital provider for a defined period, then rebalance if relief materializes. This protects Korean investors from bearing both deployment risk and tariff-driven return compression.

FX and liquidity backstops

With reserves at approximately $424 billion and a $20 billion annual deployment cap, the immediate FX impact is manageable. However, callable capital structures and ring-fenced USD funding vehicles remain prudent, particularly if deployment accelerates. Central bank swap-line availability should be evaluated to mitigate liquidity stress during disbursement cycles.

Governance, communications, and enforcement planning

Enforcement-risk covenants: Define a “Policy Adverse Event” (such as enforcement actions impacting a threshold number of employees or facilities) that triggers standstill, consultation, or pricing adjustments. The September 2025 Hyundai detention of 475 workers illustrates why such provisions are essential.

Communications protocol: Pre-clear messaging sequences with government counterparts and issuers. Establish a joint response cell for crisis updates to lenders, rating agencies, and exchanges. The post-Hyundai administrative coordination channel between Korean missions and US immigration authorities provides a template.

Decision rights: Allocate vetoes for tariff-sensitive capital expenditure, with deadlock resolution that does not halt ongoing non-sensitive operations. The Korea-US Strategic Investment Corporation’s governance structure should define escalation paths clearly.

Dispute forums and remedies: Select governing law and dispute resolution suited to sovereign-linked parties. UNCITRAL-style arbitration has been referenced in comparable sovereign FDI frameworks. Calibrate interim relief and step-in rights for essential assets.

Counsel’s checklist: choosing instruments and safeguards

From term sheet to execution: an action sequence

1. Map policy exposures by asset class: tariffs (currently 15%, restoration risk to 25%), immigration enforcement, export controls, and IRA/CHIPS incentives.
2. Choose a capital stack led by the Korea-US Strategic Investment Corporation for credibility and FX control, within the $20 billion annual cap.
3. Embed tariff-adjustment mechanics and milestone decoupling so operations continue irrespective of near-term trade outcomes.
4. Set 50:50 profit-sharing as the starting baseline, with clear documentation of the 90:10 post-recovery shift and ratchets tied to policy and performance events.
5. Arrange liquidity backstops and evaluate swap-line availability to avoid reserve strain during capital calls against the $424 billion reserve base.
6. Define enforcement-risk covenants and a crisis communications protocol, referencing the September 2025 Hyundai precedent and subsequent administrative coordination channels.
7. Secure approvals and coordinate with counterpart agencies. Clarify governance, UNCITRAL-style dispute forums, and step-in rights early.

Armenia as a diversification gateway

For investors navigating the complexity of large-scale sovereign FDI frameworks, Armenia offers a complementary diversification pathway. With streamlined business registration (typically completed in one to three business days with no minimum share capital for LLCs), a flat 20% personal income tax for residents, and residence-by-investment programs, Armenia positions itself as an accessible jurisdiction for structuring cross-border operations.

The IT sector benefits from a 1% turnover tax regime for qualifying companies, and Armenia’s tax framework provides clear pathways for non-residents taxed only on Armenia-sourced income. For Korean and other Asia-Pacific investors looking to diversify beyond concentrated US exposure, Armenia’s special residency programs and growing technology ecosystem warrant consideration as part of a broader portfolio approach.

Conclusion

The South Korea-US $350 billion investment framework has evolved from a stalled pledge into a legislated commitment through the March 2026 Special Act. Yet the gap between legal commitment and capital deployment remains wide: zero publicly confirmed disbursements, a $20 billion annual cap, and an MOU that is explicitly non-binding.

For counsel, the lesson remains: structure first, politics second. Use policy-institution-led credit, guarantees, and staged equity to avoid FX shocks. Anchor the 50:50 profit-sharing baseline with ratchets that account for the 90:10 post-recovery shift. Hard-wire tariff adjustment mechanisms that account for the gap between the current 15% legal rate and potential restoration to 25%. And pre-arrange governance, communications, and enforcement-risk covenants informed by the September 2025 Hyundai precedent. To discuss bespoke cross-border structuring or investment migration options, contact our team of licensed attorneys.

Frequently asked questions