South Korea 2026: After Martial Law, the Korea Discount Re-rated

Six hours that re-priced Korea #

At 22:23 KST on December 3, 2024, President Yoon Suk-yeol declared emergency martial law under Article 77 of the Republic of Korea Constitution, citing what he framed as anti-state activity by the opposition-controlled National Assembly. Special forces moved on the Assembly building, helicopters landed on the lawn, and soldiers attempted to obstruct lawmakers from entering the chamber. Within roughly two and a half hours, 190 of 300 members convened, and Resolution 190-0 demanded the immediate lifting of martial law under Article 77 paragraph 5. Yoon rescinded the decree at 04:30 on December 4. The episode lasted under six hours, but the reputational damage to a four-decade-old democratic settlement was permanent.

The Assembly impeached Yoon on December 14, 2024 by a vote of 204 to 85, with twelve members of his own People Power Party crossing the aisle. Prime Minister Han Duck-soo became acting president, was himself impeached on December 27, then reinstated by the Constitutional Court on March 24, 2025. On April 4, 2025 the Constitutional Court ruled 8-0 to uphold Yoon's removal, formally ending his presidency. Yoon was indicted on January 26, 2025 on insurrection charges, the first sitting or former South Korean president to face that charge.

The Lee Jae-myung mandate #

Lee Jae-myung, leader of the Democratic Party of Korea, won the snap election held on June 3, 2025 with 49.4 percent against People Power Party candidate Kim Moon-soo at 41.2 percent and Reform Party candidate Lee Jun-seok at 8.3 percent. Turnout reached 79.4 percent, the highest in a Korean presidential contest since 1997. The Democratic Party already held 170 of 300 Assembly seats from the April 2024 legislative election, giving the new president a unified government with the largest progressive majority since 2004.

Lee's economic platform reads as a recalibration rather than a rupture. Universal basic income pilots are scaled rather than national, the corporate tax base is broadened by closing carry-forward and tax-credit loopholes rather than by raising headline rates, and the chaebol governance agenda is anchored in the OECD-aligned Commercial Act amendments that the Democratic Party tabled repeatedly under the prior administration. The strategic posture is the same Indo-Pacific architecture inherited from Yoon, including the trilateral framework with the United States and Japan codified at Camp David in August 2023, but Seoul's NATO Indo-Pacific partner status and its quiet supply of artillery ammunition to backfill Western stocks supporting Ukraine are now under formal review.

KOSPI volatility and the Korea discount, re-rated #

The KOSPI closed at 2,500 on December 2, 2024 and at 2,360 on December 9, a one-week loss of 5.6 percent, with the broader KOSDAQ down 7.4 percent. Foreign investors net sold KRW 1.9 trillion of Korean equities in the week of martial law, and KRW 6.5 trillion across December. The KOSPI 200 implied volatility, VKOSPI, jumped from 16 to 33 over four trading sessions. By the April 4, 2025 Constitutional Court ruling, the index had partially recovered to 2,540, and by year-end 2025 sat near 2,720 as the Lee government's Value-Up enforcement framework was tabled.

The structural takeaway is that the so-called Korea discount, the persistent gap between Korean equity multiples and Asian peers, has been re-rated rather than removed. KOSPI 200 trailing price-to-book stood near 0.92 at the December 2024 trough, against 1.45 for the TWSE TAIEX and 1.30 for the Nikkei 225. Bank of Korea Financial Stability Reports trace roughly 200 basis points of additional sovereign risk premium embedded in the won basis swap during the worst of the political stress. Argus reads the post-impeachment regime as a discount that contracts as governance reforms bind, but does not vanish: a 0.95 to 1.05 trailing book multiple is the realistic 2026 to 2027 corridor, against a 1.15 ceiling that requires the Commercial Act amendment to clear and to be enforced through court precedent.

The won and the Bank of Korea response #

USD/KRW broke 1,470 on December 19, 2024, the weakest level since the 2009 global financial crisis. The Bank of Korea governor Rhee Chang-yong opened a week of crisis communications, the Ministry of Economy and Finance activated the foreign exchange stabilization fund, and the National Pension Service expanded its strategic FX hedging program to roughly 10 percent of its overseas equity book to absorb dollar demand. Reserves fell from USD 414.6 billion in November 2024 to USD 401.5 billion in March 2025, the lowest reading since 2020.

BOK held the policy rate at 3.00 percent through the political crisis, then resumed cutting in February 2025 to 2.75 percent and again in May 2025 to 2.50 percent as inflation settled near the 2.0 percent target. The KRW recovered to 1,360 by the June 2025 election and traded in a 1,310 to 1,380 corridor through late 2025 and the first quarter of 2026. The IMF Article IV consultation concluded in November 2025 endorsed the BOK's measured easing path while flagging contingent fiscal risk from public guarantees to PF loans and from the deferred pension liability.

Chaebol governance and the Value-Up regime #

The Corporate Value-Up Program launched by the Financial Services Commission and Korea Exchange in February 2024 was a voluntary disclosure regime aimed at narrowing the Korea discount through clearer capital-return policies, board accountability, and minority shareholder protection. Adoption ran ahead of expectations on form but behind on substance: by the end of the first quarter of 2026 roughly 235 KOSPI-listed companies, covering close to 58 percent of free-float market capitalization, had filed Value-Up disclosures, but only 41 percent committed to numerical return-on-equity or total-shareholder-return targets, and only 12 percent disclosed independent board nomination processes that meet OECD Principles of Corporate Governance benchmarks.

The Lee administration's Commercial Act amendment, passed in October 2025, expands directors' fiduciary duty from the company to all shareholders, including minorities, and tightens rules on related-party transactions and tunneling through circular shareholdings. Korean law firm bar associations had warned that the change would chill founder-family decision-making, but early case law in Seoul Central District Court has so far validated narrow rather than expansive readings. Argus expects the cumulative effect to compress the conglomerate-discount component of the Korea discount by roughly 200 to 300 basis points of multiple expansion across the top thirty chaebol-affiliated listings over 2026 and 2027.

Defense exports, household debt, and pension deferral #

Korean defense exports remained a bright spot through the political crisis. Hanwha Aerospace booked roughly USD 12.6 billion in K9 Thunder, Chunmoo, and Redback contract awards through 2025, with executive deliveries to Poland on the second batch K9 framework, follow-on Chunmoo orders, and a pending Australian Land 400 Phase 3 ramp. Hyundai Rotem signed a second tranche of K2 Black Panther tanks with Poland in 2025 worth approximately USD 6.0 billion, including Polish-content offsets via Bumar Lab and PGZ. Lee's administration has retained the export-credit backing through the Korea Trade Insurance Corporation, while imposing a stricter end-use clause on lethal aid that could be transhipped to Ukraine.

Household credit remains the most acute domestic vulnerability. BOK Financial Stability Report data placed total household debt at 91 percent of GDP at end-2025, the highest in the OECD on a like-for-like basis. The DSR, debt-service ratio rule, capping new household borrower flows at 40 percent of income for banks and 50 percent for non-banks, has held since July 2024, and a tightened stress DSR using a hypothetical 1.5 percentage-point rate buffer was extended to all new mortgage origination in 2025. House prices in the Seoul metropolitan area rose 2.7 percent through 2025 against a national average of 0.4 percent, and Jeonse rents firmed 3.9 percent as tenants moved out of monthly leases. The Lee government has moved to scale back the Jeonse system in favor of monthly rent through public guarantees and depositor protection caps, with the Housing and Urban Guarantee Corporation processing roughly KRW 6.4 trillion in deposit-return guarantees in 2025.

Pension reform, the most predictable failure of Korean fiscal policy, has been deferred again. The National Pension Service operates with a contribution rate of 9 percent of income, split equally between employer and employee, and a target replacement rate of about 40 percent of average income. Roughly 7.6 percent of contributors carry the dependency burden of an aging population whose median age reached 45.5 years in 2025. The NPS fund, at KRW 1,200 trillion of assets, is on a depletion path that the 5th Actuarial Review projects to exhaust the fund by 2055 at the current contribution rate. The Yoon administration's reform proposal to lift contributions to 13 percent stalled in the National Assembly. The Lee administration has tabled a staged increase to 12 percent by 2030 and 13 percent by 2035, with a corresponding lift in replacement to 42 percent, but the bill faces resistance from younger contributors who view the trade as intergenerationally unfair.

Three scenarios for 2026 to 2028 #

Argus assigns a 55 percent probability to a base case in which Lee's reforms grind through the Assembly, the KOSPI re-rates from 0.95 to 1.05 trailing book over 2026 to 2027, the won settles in a 1,300 to 1,360 corridor, and BOK holds the policy rate at 2.50 percent through the first half of 2026 before cutting to 2.25 percent. GDP growth runs at 1.9 to 2.2 percent annually, headline CPI averages 2.0 percent, and the Value-Up disclosure adoption rate climbs to 75 percent of free-float market capitalization. Pension reform passes in attenuated form. Household debt declines from 91 to 88 percent of GDP. Defense exports book another USD 18 to 22 billion in cumulative awards through 2027.

The upside case at 25 percent probability requires Commercial Act enforcement to bite quickly, the household debt deleveraging to proceed without a property correction, and the Indo-Pacific framework with Washington and Tokyo to remain stable through the United States political cycle. KOSPI multiples push toward 1.15 trailing book, foreign equity inflows top KRW 30 trillion in 2026, and the won strengthens through 1,260. The downside case at 20 percent probability sees a renewed institutional shock, whether through a contested criminal trial of Yoon, a constitutional challenge to a pillar of the Commercial Act amendment, or an external trade event. KOSPI multiples retest 0.85 trailing book, the won breaches 1,450, BOK reserves fall toward USD 380 billion, and household credit stress concentrates in non-bank PF and second-tier card issuers. The actionable variables to track in 2026 are Value-Up enforcement case law, NPS reform passage, household DSR adherence, and the Hanwha and Hyundai Rotem export pipeline.

Sources #

• Bank of Korea Financial Stability Report
• Ministry of Economy and Finance Korea
• Statistics Korea KOSIS
• IMF Article IV Korea 2025
• OECD Economic Surveys Korea
• Korea Center for International Finance KCIF
• Reuters Korea coverage
• Financial Times Korea
• Korea JoongAng Daily
• National Pension Service Annual Report