The German Institute for Economic Research (DIW) has proposed a special levy called the "Boomer-Soli" to stabilize the pension system amid increasing pressure from the retirement of the large baby boomer generation born in the 1950s and 1960s. This levy would impose a 10% surcharge on income exceeding 1,048 euros, including pensions, rent, and savings, targeting retirees with higher incomes to relieve the pension funds without burdening younger generations. The proposal has sparked debate, with some experts, such as pension expert Bert Rürup, arguing that such a levy could discourage private and occupational supplementary pensions. Critics also describe the Boomer-Soli as a form of expropriation, claiming it unfairly penalizes retirees who have contributed to the system for decades. The issue coincides with broader demographic challenges, including increased demand for healthcare and eldercare services as the baby boomer generation reaches advanced ages, referred to as the "2025 problem" in Japan. The discussion reflects concerns about ensuring the sustainability of the pension system as demographic shifts strain public finances.