South Korea to roll back tax cuts as new leader seeks expansionary policy

South Korea's new liberal government is proposing significant tax revisions to bolster state revenue and fund an expansionary fiscal policy, reversing prior cuts. Key changes include a one-percentage-point increase in corporate income tax and higher stock transaction taxes, alongside a lowered capital gains tax threshold for large shareholders. However, the plan also introduces tax incentives for high-payout dividend income to mitigate the 'Korea discount' and offers exemptions for AI and cultural investments. These measures, projected to boost tax revenue by trillions of won by 2027, are being implemented as the IMF recently lowered South Korea's 2025 growth forecast despite recent Q2 economic expansion.

Analysis

South Korea's new government is implementing a significant fiscal policy shift, aiming to reverse prior tax cuts to enhance revenue and support an expansionary agenda. The core of the proposal involves raising the corporate income tax rate by one percentage point to a 10-25% bracket and increasing the stock transaction tax from 0.15% to 0.2%. Furthermore, the threshold for 'large shareholders' subject to capital gains tax is being lowered substantially from 5 billion won to 1 billion won. These measures are a direct response to a two-year decline in government tax revenue and are projected to boost revenue by 5.6 trillion won annually by 2027. To counterbalance these tax hikes and address the persistent 'Korea discount,' the plan introduces preferential tax rates for dividend income from high-payout companies. It also provides tax exemptions for strategic investments, specifically designating more artificial intelligence technologies and the cultural sector as beneficiaries. This policy pivot occurs within a challenging macroeconomic context, as the IMF recently revised its 2025 growth forecast for South Korea downward to 0.8%, despite a strong Q2 GDP report.

Key Decisions for Investors

• Investors should anticipate increased costs and potential pressure on corporate earnings across the South Korean market due to the broad-based hikes in corporate income and stock transaction taxes.
• A strategic portfolio adjustment towards companies with high dividend payout ratios or those operating in the AI and cultural sectors could be advantageous, as these areas are targeted for preferential tax treatment.
• Investors with holdings approaching the new 1 billion won threshold in a single stock should evaluate their positions to manage potential capital gains tax liabilities resulting from the lowered 'large shareholder' definition.
• Monitor the effectiveness of the government's expansionary spending against the backdrop of a lowered IMF growth forecast, as the net impact on domestic demand and economic stability remains uncertain.