US Estate Tax vs. Japan Inheritance Tax: Understanding the Vast Exemption Disparity and Worldwide Taxation Risks
U.S. citizens and green card holders face potential dual taxation from U.S. and Japanese authorities upon death. The U.S. estate tax exemption of approximately $13.61 million significantly dwarfs Japan’s inheritance tax basic exemption (e.g., ~$320,000 for 3 heirs), creating substantial risk. Japanese assets are subject to worldwide taxation principles, leading to unexpected tax burdens. With the U.S. exemption potentially halving in 2026, proactive estate planning is crucial. This article details the tax disparities, worldwide taxation, double taxation risks, and strategic solutions with case studies.








