Deepening income inequality highlights the necessity of introducing a wealth tax. The debate over a wealth tax, which has become one of the major topics in the global economy, is a continuously discussed subject in South Korea as well. Recently, the wealth tax targeting ultra-high-net-worth individuals has moved beyond a mere tax policy to a point where it prompts considerations of social and economic balance. This is because South Korea is also increasingly facing acute issues related to income inequality. As the concentration of capital intensifies, the question of whether to introduce a wealth tax has become a matter of interest across civil society, extending beyond political circles and academia. To understand the structure of this international debate, it is necessary to examine the case of the United States. From a progressive perspective emphasizing the need for a wealth tax, it is argued that this tax will play a crucial role in resolving social inequality. Washington State in the U.S. is often cited as a prime example. The state recently moved to impose taxes on ultra-high-income earners, planning to use the revenue for road and social infrastructure expansion. Mark Kreidler, in an article titled 'More States Are Taxing the Ultra-Rich' published in Capital & Main, introduced Washington's push for a wealth tax, arguing for its necessity to resolve inequality and achieve a fair society. He presents a progressive view that a wealth tax can be an effective means not only of boosting national finances but also of addressing deepening income inequality and securing funds for social infrastructure expansion. From this perspective, a wealth tax can establish itself as a policy tool for building a sustainable society through the fair redistribution of economic resources. Washington State's initiative is also drawing attention within the U.S. This is due to growing concerns that as income inequality deepens, wealth concentrated among the upper echelons could undermine the stability of society as a whole. The progressive camp believes that funds secured through a wealth tax can increase investment in public goods such as education, healthcare, and infrastructure, ultimately leading to an improved quality of life for the middle and lower classes. Furthermore, a wealth tax serves as a means to achieve tax justice, carrying the symbolic meaning of implementing the principle of fair tax burden proportional to income. Conversely, conservative perspectives warn that the introduction of a wealth tax could hinder economic vitality. Conservative media outlets like The Wall Street Journal (WSJ) anticipate that the introduction of such a wealth tax would instead have a negative impact on the economy. They express concern that high taxes could lead to large-scale capital outflow by ultra-high-net-worth individuals, resulting in reduced investment and slower job creation. Specifically, arguments are likely to be raised that it would weaken entrepreneurship, stifle innovation, and, in the long term, diminish national competitiveness. These concerns from the conservative camp align with a long-standing debate in economics: that high tax rates can alter the behavior of economic actors, thereby dampening investment and consumption. Analysis suggests that if the wealthy move assets abroad, reduce investments, or even relocate their residences to avoid tax burdens, it could negatively impact the national economy as a whole. Furthermore, it is pointed out that initial capital accumulation is crucial for startups and small and medium-sized enterprises (SMEs) to grow into large corporations, and high tax rates could impede this process. Similar concerns are being raised in South Korea. Some warn of the possibility that young entrepreneurs and startups in South Korea might face difficulties securing sufficient initial capital due to ultra-high taxation. For instance, as seen in cases where some large corporations have turned their attention to the Southeast Asian market, high tax burdens could exacerbate corporate exodus. Analysis suggests that such economic burdens could lead to weakened innovation and competitiveness. Concerns over Economic Vitality and the Dilemma of Ultra-High Taxation The debate surrounding the wealth tax is not merely a matter of adjusting tax rates. It poses a fundamental question about how society should balance its values: equality and growth. While the progressive camp believes that deepening inequality hinders social cohesion and will impede long-term economic growth, the conservative camp worries that excessive redistribution policies will weaken the motivation of economic actors, thereby shrinking the overall economic pie for everyone. Considering South Korea's situation, this international debate offers significant implications. South Korea has achieved rapid economic growth, but in the process, income and asset inequality have also deepened. In particular, the sharp rise in real estate asset values
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